Irina P Panyushkina

Interests

Research

Climate Change, Hydrology, Biochemistry, Carbon-14, Environmental Archaeology

Courses

Scholarly Contributions

Books

• Umanova, E. R., Uksenbay, K., Koja, M., & Panyushkina, I. P. (2023). The Mausoleum of Jochi Khan: the History of the Research. Samarkand, Uzbekistan: International Institute of Central Asian Studies.
• Panyushkina, I. P. (2012). Climate-induced changes in population dynamics of Siberian Scythians (700-250 B.C.).

Chapters

• Usmanova, E. R., Panyushkina, I. P., & Dryomov, I. I. (2020). Ethnocultural code of military groups at Jochi Ulus from archeology of the Karasuyr burial, Ulytau, Central Kazakhstan.. In Jochi: Personality, Epoch and Heritage. Edited A.K. Kushkumbaev(pp 184-217). Kazakhstan: Almaty Press.
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  Usmanova E.R., Dryomov I.I., Panyushkina I.P., 2020. Ethnocultural code of military groups at Jochi Ulus from archeology of the Karasuyr burial, Ulytau, Central Kazakhstan. In book “Jochi: Personality, Epoch and Heritage” Ed. A.K. Kushkumbaev, Almaty Press, Kazakhstan, pp.184-217. ISBN 978-601-08-0211-7.
• Panyushkina, I. P., Macklin, M. G., Toonen, W., & Meko, D. M. (2019). Water supply and ancient society in the Lake Balkhash Basin: runoff variations along the historical Silk Road. In Socio-environmental dynamics along the historical Silk Road(pp 379-410). Springer. doi:10.1007/978-3-030-00728-7_18
• Usmaniva, E., Panyushkina, I. P., Zhumashev, R., Dzhumabekov, Z., & Antonov, M. (2019). The mystery of Altynshoky Hill: an episode from Tumur's military campaign against Toktamysh in 1391.. In Hallmark of Tamerlane at Altynshoky(pp 138-163). Kazakhstan: Tengri.
• Panyushkina, I. P. (2015). Calendar age of Halvay kurgan group. In Bronze Age Burial Ground Halvay III in North Kazakhstan authored by I. Shevnina and A. Logvin. Astana, Kazakhstan: Margulan Institute of Archaeology.
• Panyushkina, I. P., Grigoriev, F., & Lange, T. (2015). Age of Bes-Shatyr #3 Saka kurgan derived from radiocarbon and tree rings. In Saka Culture of Saryarka in the Context of Ethnic and Sociocultural Processes of Eurasian Steppe. Almaty, Kazakhstan: Begazy-Tasmola HARC.
• Usmanova, E. R., Dremov, I. I., & Panyushkina, I. P. (2015). Mongol burials of late 13th and early 14th Centuries in Ulytau, Kazakhstan.. In Bulantyn Battle: History of Discovery. Eds.: B.S. Kojakhmetov, E.R. Usmanova, L.N. Pletnokova, L.A. Sembinova(pp 162-173). Kazakhstan: National Museum of Ulutau History and Culture.
• Mills, B. J., & Panyushkina, I. P. (2013). Analysis of ceramics from Lisakovsk cluster of sites: Alakul and Fyodorovo chronology and interaction.. In Archaeology of Lisakovsky area authored by E.R. Usmanova(pp 212-229). Karaganda: Tengri.
• Panyushkina, I. P. (2013).

  Climate‐Induced Changes in Population Dynamics of Siberian Scythians (700–250 B.C.)

  . In Climates, Landscapes, and Civilizations, 198:145-154. American Geophysical Union (AGU). doi:10.1029/2012GM001220
• Panyushkina, I. P. (2013). Calendar age of Lisakovsky burial fields.. In Archaeology of Lisakovsky area(pp 197-205). Karaganda, Kazakhstan: Tengri.
• Mode, W., Panyushkina, I. P., Leavitt, S. W., Williams, J. W., Santiago, A., Gill, J., Edwards, C., & Gertz, H. (2007). Late-glacial and early Holocene paleoecology: Schneider farm, Calumet County.. In Late-Glacial History of East-central Wisconsin. Ed. T.S. Hooyer(pp 53-60). Oshkosh, WI: Wisconsin Geological and Natural History Survey.
• Panyushkina, I. P., & Leavitt, S. W. (2007). Insights into Late Pleistocene–Early Holocene Paleoecology from fossil wood around the Great Lakes region. In Late-Glacial History of East-central Wisconsin. Ed. T.S. Hooyer(pp 61-71). Oshkosh, WI: Wisconsin Geological and Natural History Survey.
• Bikov, N., Bikova, B. A., Panyushkina, I. P., & Sljusarenko, I. (2004). Dates for Pazyryk culture tombs in the Altai derived from methods of dendrochronology, astronomy and land-survey. In Complex Studies of Ancient and Historical Societies of Eurasia. Eds. Y.F. Kiryushin and A.A. Tishkin(pp 258-265). Barnaul, Russia: Altai University Press.
• Panyushkina, I. P., Naurzbaev, M. M., & Vaganov, E. A. (2000). Climatic information in radial cell dimensions of larch tree rings. In Questions of Pleistocene–Holocene Climate and Environment Reconstructions in Siberia, Vol.2(pp 420-427). Novosibirsk, Russia: SB RAS.
• Panyushkina, I. P., Ovtchinnikov, D., & Adamenko, M. (2000). Application of the Altai Mountains tree-ring network for paleoenvironmental reconstructions with high-temporal resolution. In Questions of Pleistocene–Holocene Climate and Environment Reconstructions in Siberia, Vol. 2(pp 413-419). Novosibirsk, Russia: SB RAS.
• Vaganov, E. A., & Panyushkina, I. P. (1998). Biophysical basis of seasonal tree growth model. In Selected Chapters of Ecological Biophysics(pp 84-100). Novosibirsk, Russia: Nauka.

Journals/Publications

• Meko, D., Biondi, F., Taylor, A. H., Panyushkina, I. P., Thaxton, R., Prusevich, A., Shiklomanov, A., Lammers, R., & Gridden, S. (2024). Runoff variability in the Truckee-Carson River Basin from tree rings and water balance model. . AMS Earth Interaction, 28(1), 24. doi:https://doi.org/10.1175/EI-D-23-0018.1
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  We show how water balance modeling in combination with tree-ring data helps place modern droughts in the context of the past few centuries and a warming climate. Seasonal precipitation and temperature were reconstructed from multiproxy tree-ring data for a mountainous location near Lake Tahoe, and these reconstructions were routed through a water balance model to get a record of monthly runoff, snowmelt, and other water balance variables from 1688 to 1999. The resulting extended annual runoff record highlights the unmatched severity of twentieth-century droughts. A warming of 3°C imposed on reconstructed temperature generally exacerbates the runoff anomalies in past droughts, but this effect is sometimes offset by warming-related changes in the snow regime.
• Panyushkina, I. P., Shayakhmetova, A., Pashkov, S., & Agafonov, L. (2024). Unstable state of hydrologic regime and grain yields in northern Kazakhstan estimated with tree-ring proxies. . Agriculture, 14, 790. doi:10.3390/agriculture14060790
• Panyushkina, I. P., Usmanova, E. R., & Iskanderova, A. D. (2024). Historical reconstruction of the sacred mission of the Jochi Khan mausoleum. . J. of Archaeology of the Eurasian Steppes, 2, 375-388. doi:10.24852/2587-6112.2024.2.375.388
• Thaxton, R., Panyushkina, I. P., Meko, D., van Arx, G., & Agafonov, L. (2023). Quantifying terminal white bands in Salix from the Yenisei River, Siberia, and their relationship to late-season flooding. Trees, 821-836.
• Agafonov, L., Meko, D., Panyushkina, I., Thaxton, R., & von Arx, G. (2022). QUANTIFYING TERMINAL WHITE BANDS IN SALIX FROM THE YENISEI RIVER, SIBERIA AND THEIR RELATIONSHIP TO LATE-SEASON FLOODING. Trees, 37, 821–836. doi:10.1007/s00468-023-02386-5
• Akhatov, G. A., Dzhumabekov, D., Jull, A. J., Kozha, M., Panyushkina, I. P., Uskenbay, K. Z., & Usmanova, E. (2022).

  CHRONOLOGY OF THE GOLDEN HORDE IN KAZAKHSTAN: ¹⁴C DATING OF JOCHI KHAN MAUSOLEUM

  . Radiocarbon. doi:10.1017/rdc.2022.24
• Black, B. A., Jull, A. J., Leavitt, S. W., Meko, D. M., Panyushkina, I. P., Squire, J., Testa, N. R., & Water, P. V. (2022).

  Douglas Fir Multiproxy Tree-Ring Data Glimpse MIS 5 Environment in the U.S. Pacific Northwest

  . Forests. doi:10.3390/f13122161
• Panyushkina, I. P., Leavitt, S. W., Meko, D. M., Black, B., Jull, A. J., Van de Water, P., Squire, J., & Testa, N. R. (2022). Douglas fir multiproxy tree-ring data glimpse MIS 5 environment in the U.S. Pacific Northwest. Forests, 13(12), 2161. doi:https://doi.org/10.3390/f13122161
• Panyushkina, I. P., Livina, V., Molnar, M., Varga, T., & Jull, T. (2022). Scaling C¹⁴-excursion signal in multiple C¹⁴ tree-ring series with Dynamic Time Warping.. Radiocarbon, 10.1017/RDC.2022.25.
• Usmanova, E. R., Uksenbay, K., Koja, M., Panyushkina, I. P., Solovoeva, L. N., & Akhatov, G. (2022). Jochi Khan Mausoleum: reality, legends, and rituals. Archaeology of Eurasian Steppe, 3, 74-80.
• Adolphi, F., Brehm, N., Helama, S., Jull, A. J., Kanzawa, K., Miyake, F., Moriya, T., Muscheler, R., Nicolussi, K., Oinonen, M., Panyushkina, I. P., Salzer, M., Takeyama, M., Tokanai, F., & Wacker, L. (2021).

  A Single‐Year Cosmic Ray Event at 5410 BCE Registered in ¹⁴ C of Tree Rings

  . Geophysical Research Letters, 48(11). doi:10.1029/2021gl093419
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  The annual 14C data in tree rings is an outstanding proxy for uncovering extreme solar energetic particle (SEP) events in the past. Signatures of extreme SEP events have been reported in 774/775 CE, 992/993 CE, and ∼660 BCE. Here, we report another rapid increase of 14C concentration in tree rings from California, Switzerland, and Finland around 5410 BCE. These 14C data series show a significant increase of ∼6‰ in 5411–5410 BCE. The signature of 14C variation is very similar to the confirmed three SEP events and points to an extreme short-term flux of cosmic ray radiation into the atmosphere. The rapid 14C increase in 5411/5410 BCE rings occurred during a period of high solar activity and 60 years after a grand 14C excursion during 5481–5471 BCE. The similarity of our 14C data to previous events suggests that the origin of the 5410 BCE event is an extreme SEP event.
• Miyake, F., Panyushkina, I. P., Jull, A. J., Adolphi, F., Brehm, N., Helama, S., Kanzawa, K., Moriya, T., Muscheler, R., Nicolussi, K., Oinonen, M., Salzer, M., Takeyama, M., Tokanai, F., & Wacker, L. (2021). A Single-Year Cosmic Ray Event at 5410 BCE Registered in C of Tree Rings. Geophysical research letters, 48(11), e2021GL093419.
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  The annual C data in tree rings is an outstanding proxy for uncovering extreme solar energetic particle (SEP) events in the past. Signatures of extreme SEP events have been reported in 774/775 CE, 992/993 CE, and ∼660 BCE. Here, we report another rapid increase of C concentration in tree rings from California, Switzerland, and Finland around 5410 BCE. These C data series show a significant increase of ∼6‰ in 5411-5410 BCE. The signature of C variation is very similar to the confirmed three SEP events and points to an extreme short-term flux of cosmic ray radiation into the atmosphere. The rapid C increase in 5411/5410 BCE rings occurred during a period of high solar activity and 60 years after a grand C excursion during 5481-5471 BCE. The similarity of our C data to previous events suggests that the origin of the 5410 BCE event is an extreme SEP event.
• Panyushkina, I. P. (2021). Unprecedented acceleration of winter discharge of Upper Yenisei River inferred from tree rings.. Environmental Research Letters. doi:10.1088/1748-9326/ac3e20
• Panyushkina, I. P. (2022). In Memoriam Stepan G. Shiyatov 1933-2021. Tree-Ring Research. doi:10.3959/TRR2021-23
• Timothy Jull, A. J., Panyushkina, I. P., Molnár, M., Varga, T., Wacker, L., Brehm, N., Laszló, E., Baisan, C., Salzer, M. W., & Tegel, W. (2021). Rapid C excursion at 3372-3371 BCE not observed at two different locations. Nature communications, 12(1), 712.
• Agafonov, L. I., Edwards, J. A., Meko, D. M., & Panyushkina, I. P. (2020).

  Impact of high flows of an Arctic river on ring widths of floodplain trees

  . The Holocene, 30(6), 789-798. doi:10.1177/0959683620902217
• Baisan, C., Brehm, N., Jull, A. J., Molnár, M., Panyushkina, I. P., Salzer, M. W., Tegel, W., Varga, T., & Wacker, L. (2020).

  Rapid 14C excursion at 3372-3371 BCE not observed at two different locations, a comment on Wang et al. (2017)

  . arXiv (Cornell University).
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  Excursions in the carbon-14 record measured in tree rings are attributed to various high energy but short-lived cosmic effects. So far, rapid changes at 774-775 CE, 993-994 CE and 660 BCE have been convincingly interpreted as due to rapid changes in solar cosmic-ray flux, usually accredited with reproduction of the events in trees at different locations and different laboratories, and followed with equivalent peaks of other cosmogenic isotopes in polar ice cores. In 2017, Wang et al. proposed a new event at 3372-3371 BCE based on a single set of annual 14C data measured on a floating series of tree rings sampled from a buried specimen of Chinese wingnut tree (Pterocarya stenoptera). We attempted to reproduce this event in tree rings of an absolutely dated bristlecone pine specimen (Pinus longaeva) from the White Mountains, California USA and a subfossil European oak (Quercus sp.) from the Moselle River Valley in France. Unfortunately, we are unable to determine whether there is any rapid 14C excursion during this time, although the regular 11-year Schwabe cycle is clearly observable. Therefore, the presence of a cosmic-ray event as suggested at 3372-3371 BCE cannot be confirmed. It is possible the exposed 14C spike occurred at some other time, the absolute age of which we cannot determine unless the precise calendar age of the Chinese wingnut wood is properly crossdated, although the other data of Wang et al. (2017) is not inconsistent with our records. In either case, this is important because the frequency of such extreme cosmic events needs to be well-documented to assess the likelihood of similar high-energy effects occurring in the future.
• Barinov, V. V., Büntgen, U., Churakova (Sidorova), O. V., Corona, C., Fonti, P., Fonti, M. V., Guillet, S., Hughes, M. K., Kirdyanov, A. V., Myglan, V. S., Naumova, O. V., Ovchinnikov, D. V., Panyushkina, I. P., Saurer, M., Shashkin, A. V., Siegwolf, R. T., Stoffel, M., Sviderskaya, I. V., & Vaganov, E. A. (2020).

  Eco-Physiological Response of Conifers from High-Latitude and -Altitude Eurasian Regions to Stratospheric Volcanic Eruptions

  . Journal of Siberian Federal University. Biology, 5-24. doi:10.17516/1997-1389-0313
• Cook, E. R., Solomina, O., Matskovsky, V., Cook, B. I., Agafonov, L., Berdnikova, A., Dolgova, E., Karpukhin, A., Knysh, N., Kulakova, M., Kuznetsova, V., Kyncl, T., Kyncl, J., Maximova, O., Panyushkina, I., Seim, A., Tishin, D., Wa(z), o., & Yermokhin, M. (2020). The European Russia Drought Atlas (1400-2016 CE). CLIMATE DYNAMICS, 54(3-4), 2317-2335.
• Jull, A. J., Miyake, F., Masuda, K., Nakamura, T., Kimura, K., Hakozaki, M., Lange, T. E., Cruz, R., Baisan, C., Panyushkina, I. P., & Salzer, M. (2016). Search for annual carbon-14 excursions in the past. Radiocarbon.
• Lammers, R. B., Panyushkina, I. P., Proussevitch, A. A., Shiklomanov, A. I., & Tretiakov, M. (2020).

  Water and energy fluxes to the Kara Sea based on a combination of observational data and hydrological modeling.

  . AGU Fall Meeting Abstracts.
• Meko, D. M., Panyushkina, I. P., Agafonov, L. I., & Edwards, J. A. (2020). Impact of high flows of an Arctic river on ring widths of floodplain trees. HOLOCENE.
• Panyushkina, I. P. (2020). CAN THE 14C PRODUCTION IN 1055 CE BE AFFECTED BY SN1054?. Radiocarbon.
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  ABSTRACTAnnually resolved radiocarbon (14C) measurements on tree rings led to the discovery of abrupt variations in 14C production attributed to large solar flares. We present new results of annual and subannual 14C fluctuations in tree rings from a middle-latitude sequoia (California) and a high-latitude pine (Finland), analyzed for the period 1030–1080 CE, to trace a possible impact of the Crab supernova explosion, occurring during the Oort minimum of solar activity. Our results indicate an increase of Δ14C around 1054/55 CE, which we estimate is higher in magnitude than the cyclic variability due to solar activity at a 2σ significance level. The net signal appears to be synchronized in the studied locations. Several sources of this event are possible including γ-rays from the Crab supernova, an unusually weak solar minimum or a solar energetic particle incident. More data are needed to provide more insight into the origin of this 14C event.
• Panyushkina, I. P. (2020). Eco-Physiological Response of Conifers from High-Latitude and -Altitude Eurasian Regions to Stratospheric Volcanic Eruptions. Journal of Siberian Federal University. Biology.
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  Stratospheric volcanic eruptions have had significant impacts on the radiation budget, atmospheric and surface temperatures, precipitation and regional weather patterns, resulting in global climatic changes. The changes associated with such eruptions most commonly result in cooling during several years after events. This study aimed to reveal eco-physiological response of larch trees from northeastern Yakutia (YAK), eastern Taimyr (TAY) and Altai (ALT) regions to climatic anomalies after major volcanic eruptions CE 535, 540, 1257, 1641, 1815 and 1991 using new multiple tree-ring parameters: tree-ring width (TRW), maximum latewood density (MXD), cell wall thicknesses (CWT), δ13C and δ18O in tree-ring cellulose. This investigation showed that TRW, CWT, MXD and δ18O chronologies recorded temperature signal, while information about precipitation and vapor pressure deficit was captured by δ13C chronologies. Sunshine duration was well recorded in δ18O from YAK and ALT. Tree-ring parameters recorded cold, wet and cloudy summer anomalies during the 6th and 13th centuries. However, significant summer anomalies after Tambora (1815) and Pinatubo (1991) eruptions were not captured by any tree-ring parameters
• Panyushkina, I. P. (2020). Impact of high flows of an Arctic river on ring widths of floodplain trees. The Holocene.
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  The tree-ring signal for flooding along the Ob River, a large Arctic River in western Siberia, is investigated using a combination of floodplain tree-ring sites from riparian and non-riparian settings. A conceptual model is presented contrasting tree-growth responses of riparian and non-riparian trees to unusually severe flooding. A set of five riparian ( Salix and Populus) tree-ring chronologies is developed and used in combination with existing floodplain non-riparian Larix and Pinus chronologies in a binary classification tree (CT) model to classify high-flood years, defined as a Salekhard water-level gage reading in the seasonal window from May 1 to August 31 of above 470 cm for 82 or more consecutive days. Correlation and regression identifies a nonlinear relationship of riparian ring widths to discharge and flooding: higher annual discharge generally leads to higher growth, but the relationship reverses in extreme-flood years. Micrographs highlight the suppression of width and occasional distortion of cell anatomy in selected trees. CT modeling guided by cross-validation yields a CT model with a primary split on the riparian ring width and secondary split on the non-riparian ring width. The model successfully identifies four of the eight most severe high-flow years, 1934–2014. The model further identifies two years (1885 and 1914) before the start of the gaged record in 1934 as high-flow years. No appreciable difference is found in frequency of high-flow years before and after 1956, when the first major reservoirs began filling upstream of the Lower Ob. The CT modeling approach is proposed as a novel approach to dealing with nonlinearity in reconstructing flood history of Arctic rivers from tree rings.
• Panyushkina, I. P. (2020). The European Russia Drought Atlas (1400–2016 CE). Climate Dynamics.
• Baisan, C., Heaton, T. J., Jull, A. J., Miyake, F., Panyushkina, I. P., & Pearson, C. (2019).

  Annual carbon-14 variability in tree-rings: Causes and Implications for the calibration curve

  . EGUGA.
• Belokopytova, L. V., Babushkina, E. A., Zhirnova, D. F., Panyushkina, I. P., & Vaganov, E. A. (2019). Pine and larch tracheids capture seasonal variations of climatic signal at moisture-limited sites. TREES-STRUCTURE AND FUNCTION, 33(1), 227-242.
• Chen, F., Shang, H., Panyushkina, I. P., Meko, D. M., Yu, S., Yuan, Y., & Chen, F. (2019). Tree-ring reconstruction of Lhasa River streamflow reveals 472 years of hydrologic change on southern Tibetan Plateau. JOURNAL OF HYDROLOGY, 572, 169-178.
• Chen, F., Shang, H., Panyushkina, I., Meko, D., Li, J., Yuan, Y., Yu, S., Chen, F., He, D., & Luo, X. (2019). 500-year tree-ring reconstruction of Salween River streamflow related to the history of water supply in Southeast Asia. CLIMATE DYNAMICS, 53(11), 6595-6607.
• Churakova, (., Fonti, M. V., Saurer, M., Guillet, S., Corona, C., Fonti, P., Myglan, V. S., Kirdyanov, A. V., Naumova, O. V., Ovchinnikov, D. V., Shashkin, A. V., Panyushkina, I. P., Buntgen, U., Hughes, M. K., Vaganov, E. A., Siegwolf, R., & Stoffel, M. (2019). Siberian tree-ring and stable isotope proxies as indicators of temperature and moisture changes after major stratospheric volcanic eruptions. CLIMATE OF THE PAST, 15(2), 685-700.
• Lynch, A. M., Mukhamadiev, N. S., O'Connor, C. D., Panyushkina, I. P., Ashikbaev, N. A., & Sagitov, A. O. (2019). Tree-Ring Reconstruction of Bark Beetle Disturbances in the Picea schrenkiana Fisch. et Mey. Forests of Southeast Kazakhstan. FORESTS, 10(10).
• Panyushkina, I. P. (2019). Pine and larch tracheids capture seasonal variations of climatic signal at moisture-limited sites. Trees.
• Panyushkina, I. P. (2019). Siberian tree-ring and stable isotope proxies as indicators of temperature and moisture changes after major stratospheric volcanic eruptions. Climate of the Past.
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  Abstract. Stratospheric volcanic eruptions have far-reaching impacts onglobal climate and society. Tree rings can provide valuable climaticinformation on these impacts across different spatial and temporal scales. Todetect temperature and hydroclimatic changes after strong stratosphericCommon Era (CE) volcanic eruptions for the last 1500 years (535 CE unknown,540 CE unknown, 1257 CE Samalas, 1640 CE Parker, 1815 CE Tambora, and1991 CEPinatubo), we measured and analyzed tree-ring width (TRW), maximum latewooddensity (MXD), cell wall thickness (CWT), and δ13C andδ18O in tree-ring cellulose chronologies of climate-sensitivelarch trees from three different Siberian regions (northeastern Yakutia –YAK, eastern Taimyr – TAY, and Russian Altai – ALT). All tree-ring proxies proved to encode a significant and specific climaticsignal of the growing season. Our findings suggest that TRW, MXD, and CWTshow strong negative summer air temperature anomalies in 536, 541–542, and1258–1259 at all studied regions. Based on δ13C, 536 wasextremely humid at YAK, as was 537–538 in TAY. No extreme hydroclimatic anomaliesoccurred in Siberia after the volcanic eruptions in 1640, 1815, and 1991,except for 1817 at ALT. The signal stored in δ18O indicatedsignificantly lower summer sunshine duration in 542 and 1258–1259 at YAK and536 at ALT. Our results show that trees growing at YAK and ALT mainlyresponded the first year after the eruptions, whereas at TAY, the growthresponse occurred after 2 years. The fact that differences exist in climate responses to volcanic eruptions –both in space and time – underlines the added value of a multiple tree-ringproxy assessment. As such, the various indicators used clearly help toprovide a more realistic picture of the impact of volcanic eruption on pastclimate dynamics, which is fundamental for an improved understanding ofclimate dynamics, but also for the validation of global climate models.
• Panyushkina, I. P. (2019). Tree-ring Reconstruction of Bark Beetle Disturbances in the Picea schrenkiana Fisch. et Mey. Forests of Southeast Kazakhstan. Forests.
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  Ips hauseri Reitter is the most important bark beetle on Picea schrenkiana in southeast Kazakhstan, but its biology, ecology, and outbreak dynamics are poorly known. We dendrochronologically reconstructed a 200-year history of disturbances in the Kazakh Tien Shan P. schrenkiana forests. Only localized, low-severity bark beetle events occurred during the reconstructed period, indicating that extensive high-severity bark beetle outbreaks have not occurred historically in the Tien Shan spruce forest, unlike bark beetle outbreaks in spruce forests in North America, Europe, and Russia. Disturbance frequency doubled after about 1965, probably due to warming climate. Results, combined with the failure of an outbreak to fully develop after blowdown events associated with hurricane-force windstorms in 2011, indicate that prolonged drought may be necessary to sustain I. hauseri outbreaks, or that year-to-year variation in the Tien Shan weather prevents outbreak development. I. hauseri is probably less aggressive than I. typographus, at least on their natural hosts within their natural ranges.
• Panyushkina, I. P. (2019). Tree-ring reconstruction of Lhasa River streamflow reveals 472 years of hydrologic change on southern Tibetan Plateau. Journal of Hydrology.
• Agafonov, L. I., Edwards, J. A., Meko, D. M., & Panyushkina, I. P. (2018).

  Ob River Flood History From Tree Rings

  . AGU Fall Meeting Abstracts.
• Belokopytova, L., Babushkina, E., Zhirinova, D., Panyushkina, I. P., & Vaganov, E. A. (2018). Climatic response of conifer radial growth in the forest-steppes of South Siberia: comparison of three approaches.. Contemporary Problems of Ecology, 11(4), 366-376. doi:10.1134/S1995425518040030
• Buntgen, U., Wacker, L., Galvan, J. D., Arnold, S., Arseneault, D., Baillie, M., Beer, J., Bernabei, M., Bleicher, N., Boswijk, G., Brauning, A., Carrer, M., Ljungqvist, F. C., Cherubini, P., Christl, M., Christie, D. A., Clark, P. W., Cook, E. R., D'Arrigo, R., , Davi, N., et al. (2018). Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE (vol 9, 3605, 2018). NATURE COMMUNICATIONS, 9.
• Büntgen, U., Wacker, L., Galván, J. D., Arnold, S., Arseneault, D., Baillie, M., Beer, J., Bernabei, M., Bleicher, N., Boswijk, G., Bräuning, A., Carrer, M., Ljungqvist, F. C., Cherubini, P., Christl, M., Christie, D. A., Clark, P. W., Cook, E. R., D'Arrigo, R., , Davi, N., et al. (2018). Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE. Nature communications, 9(1), 3605.
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  Though tree-ring chronologies are annually resolved, their dating has never been independently validated at the global scale. Moreover, it is unknown if atmospheric radiocarbon enrichment events of cosmogenic origin leave spatiotemporally consistent fingerprints. Here we measure the C content in 484 individual tree rings formed in the periods 770-780 and 990-1000 CE. Distinct C excursions starting in the boreal summer of 774 and the boreal spring of 993 ensure the precise dating of 44 tree-ring records from five continents. We also identify a meridional decline of 11-year mean atmospheric radiocarbon concentrations across both hemispheres. Corroborated by historical eye-witness accounts of red auroras, our results suggest a global exposure to strong solar proton radiation. To improve understanding of the return frequency and intensity of past cosmic events, which is particularly important for assessing the potential threat of space weather on our society, further annually resolved C measurements are needed.
• Damgaard, P. B., Marchi, N., Rasmussen, S., Peyrot, M., Renaud, G., Korneliussen, T., Moreno-Mayar, J. V., Pedersen, M. W., Goldberg, A., Usmanova, E., Baimukhanov, N., Loman, V., Hedeager, L., Pedersen, A. G., Nielsen, K., Afanasiev, G., Akmatov, K., Aldashev, A., Alpaslan, A., , Baimbetov, G., et al. (2018). 137 ancient human genomes from across the Eurasian steppes. Nature, 557(7705), 369-374.
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  For thousands of years the Eurasian steppes have been a centre of human migrations and cultural change. Here we sequence the genomes of 137 ancient humans (about 1× average coverage), covering a period of 4,000 years, to understand the population history of the Eurasian steppes after the Bronze Age migrations. We find that the genetics of the Scythian groups that dominated the Eurasian steppes throughout the Iron Age were highly structured, with diverse origins comprising Late Bronze Age herders, European farmers and southern Siberian hunter-gatherers. Later, Scythians admixed with the eastern steppe nomads who formed the Xiongnu confederations, and moved westward in about the second or third century BC, forming the Hun traditions in the fourth-fifth century AD, and carrying with them plague that was basal to the Justinian plague. These nomads were further admixed with East Asian groups during several short-term khanates in the Medieval period. These historical events transformed the Eurasian steppes from being inhabited by Indo-European speakers of largely West Eurasian ancestry to the mostly Turkic-speaking groups of the present day, who are primarily of East Asian ancestry.
• Damgaard, P., Marchi, N., Rasmussen, S., Peyrot, M., Renaud, G., Korneliussen, T., Moreno-Mayar, J. V., Pedersen, M. W., Goldberg, A., Usmanova, E., Baimukhanov, N., Loman, V., Hedeager, L., Pedersen, A. G., Nielsen, K., Afanasiev, G., Akmatov, K., Aldashev, A., Alpaslan, A., , Baimbetov, G., et al. (2018). 137 ancient human genomes from across the Eurasian steppes (vol 557, pg 369, 2018). NATURE, 563(7729), E16-E16.
• Jull, A., Panyushkina, I., Miyake, F., Masuda, K., Nakamura, T., Mitsutani, T., Lange, T. E., Cruz, R. J., Baisan, C., Janovics, R., Varga, T., & Molnar, M. (2018). MORE RAPID C-14 EXCURSIONS IN THE TREE-RING RECORD: A RECORD OF DIFFERENT KIND OF SOLAR ACTIVITY AT ABOUT 800 BC?. RADIOCARBON, 60(4), 1237-1248.
• Muhlemann, B., Jones, T. C., Damgaard, P., Allentoft, M. E., Shevnina, I., Logvin, A., Usmanova, E., Panyushkina, I. P., Boldgiv, B., Bazartseren, T., Tashbaeva, K., Merz, V., Lau, N., Smrcka, V., Voyakin, D., Kitov, E., Epimakhov, A., Pokutta, D., Vicze, M., , Price, T. D., et al. (2018). Ancient hepatitis B viruses from the Bronze Age to the Medieval period (vol 557, pg 418, 2018). NATURE, 562(7726), E4-E4.
• Mühlemann, B., Jones, T. C., Damgaard, P. B., Allentoft, M. E., Shevnina, I., Logvin, A., Usmanova, E., Panyushkina, I. P., Boldgiv, B., Bazartseren, T., Tashbaeva, K., Merz, V., Lau, N., Smrčka, V., Voyakin, D., Kitov, E., Epimakhov, A., Pokutta, D., Vicze, M., , Price, T. D., et al. (2018). Ancient hepatitis B viruses from the Bronze Age to the Medieval period. Nature, 557(7705), 418-423.
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  Hepatitis B virus (HBV) is a major cause of human hepatitis. There is considerable uncertainty about the timescale of its evolution and its association with humans. Here we present 12 full or partial ancient HBV genomes that are between approximately 0.8 and 4.5 thousand years old. The ancient sequences group either within or in a sister relationship with extant human or other ape HBV clades. Generally, the genome properties follow those of modern HBV. The root of the HBV tree is projected to between 8.6 and 20.9 thousand years ago, and we estimate a substitution rate of 8.04 × 10-1.51 × 10 nucleotide substitutions per site per year. In several cases, the geographical locations of the ancient genotypes do not match present-day distributions. Genotypes that today are typical of Africa and Asia, and a subgenotype from India, are shown to have an early Eurasian presence. The geographical and temporal patterns that we observe in ancient and modern HBV genotypes are compatible with well-documented human migrations during the Bronze and Iron Ages. We provide evidence for the creation of HBV genotype A via recombination, and for a long-term association of modern HBV genotypes with humans, including the discovery of a human genotype that is now extinct. These data expose a complexity of HBV evolution that is not evident when considering modern sequences alone.
• Panyushkina, I. P. (2018). Ancient hepatitis B viruses from the Bronze Age to the Medieval period. Nature.
• Panyushkina, I. P. (2018). Climatic Response of Conifer Radial Growth in Forest-Steppes of South Siberia: Comparison of Three Approaches. Contemporary Problems of Ecology.
• Panyushkina, I. P. (2018). More Rapid 14C Excursions in the Tree-Ring Record: A Record of Different Kind of Solar Activity at About 800 BC?. Radiocarbon.
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  ABSTRACTTwo radiocarbon (14C) excursions are caused by an increase of incoming cosmic rays on a short time scale found in the Late Holocene (AD 774–775 and AD 993–994), which are widely explained as due to extreme solar proton events (SPE). In addition, a larger event has also been reported at 5480 BC (Miyake et al. 2017a), which is attributed to a special mode of a grand solar minimum, as well as another at 660 BC (Park et al. 2017). Clearly, other events must exist, but could have different causes. In order to detect more such possible events, we have identified periods when the 14C increase rate is rapid and large in the international radiocarbon calibration (IntCal) data (Reimer et al. 2013). In this paper, we follow on from previous studies and identify a possible excursion starting at 814–813 BC, which may be connected to the beginning of a grand solar minimum associated with the beginning of the Hallstatt period, which is characterized by relatively constant 14C ages in the period from 800–400 BC. We compare results of annual 14C measurements from tree rings of sequoia (California) and cedar (Japan), and compare these results to other identified excursions, as well as geomagnetic data. We note that the structure of the increase from 813 BC is similar to the increase at 5480 BC, suggesting a related origin. We also assess whether there are different kinds of events that may be observed and may be consistent with different types of solar phenomena, or other explanations.
• Panyushkina, I. P. (2018). Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE. Nature Communications.
• Panyushkina, I. P., & Panyushkina, I. P. (2018). Mongol Warriors of the Jochi Ulus at the Karasuyr Cemetery, Ulytau, Central Kazakhstan. Archaeology, Ethnology and Anthropology of Eurasia (Russian-language)..
• Panyushkina, I. P., & Panyushkina, I. P. (2018). Runoff variations in Lake Balkhash Basin, Central Asia, 1779–2015, inferred from tree rings. Climate Dynamics.
• Panyushkina, I. P., Buntgen, U., Churakova, O. V., Corona, C., Fonti, P., Fonti, M. V., Guillet, S., Hughes, M. K., Kirdyanov, A. V., Myglan, V. S., Naumova, O. V., Ovchinnikov, D. V., Saurer, M., Shashkin, A., Siegwolf, R. T., Stoffel, M., & Vaganov, E. A. (2018).

  Heterogeneous response of Siberian tree-ring and stable isotope proxies to the largest Common Era volcanic eruptions

  . Climate of The Past Discussions, 1-44. doi:10.5194/cp-2018-70
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  Abstract. Stratospheric volcanic eruptions have far-reaching impacts on global climate and society. Tree rings can provide valuable climatic information on these impacts across different spatial and temporal scales. Here we explore the suitability of tree-ring width (TRW), maximum latewood density (MXD), cell wall thickness (CWT), and δ 13 C and δ 18 O in tree-ring cellulose for the detection of climatic changes in northeastern Yakutia (YAK), eastern Taimyr (TAY) and Russian Altai (ALT) sites caused by six largest Common Era stratospheric volcanic eruptions (535, 540, 1257, 1640, 1815 and 1991). Our findings suggest that TRW, MXD, and CWT show strong summer air temperature anomalies in 536, 541–542, 1258–1259 at all study sites. However, they do not reveal distinct and coherent fingerprints after other eruptions. Based on δ 13 C data, 536 was extremely humid in YAK and TAY, whereas 541 and 542 were humid years in TAY and ALT. In contrast, the 1257 eruption of Samalas likely triggered a sequence of at least two dry summers across all three Siberian sites. No further extreme hydro-climatic anomalies occurred at Siberian sites in the aftermath of the 1991 eruption. Summer sunshine duration decreased significantly in 536, 541–542, 1258–1259 in YAK, and 536 in ALT. Conversely, 1991 was very sunny in YAK. Since climatic responses to large volcanic eruptions are different, and thus affect ecosystem functioning and productivity differently in space and time, a combined assessment of multiple tree-ring parameters is needed to provide a more complete picture of past climate dynamics, which in turns appears fundamental to validate global climate models.
• Panyushkina, I. P., Meko, D. M., Macklin, M. G., Toonen, W., Mukhamadiev, N. S., Konovalov, V. G., Ashikbaev, N. Z., & Sagitov, A. O. (2018). Runoff variations in Lake Balkhash Basin, Central Asia, 1779-2015, inferred from tree rings. CLIMATE DYNAMICS, 51(7-8), 3161-3177.
• Panyushkina, I. P., Slyusarenko, I. Y., Sala, R., Deom, J., & Toleubayev, A. T. (2018). Calendar Age of the Baigetobe Kurgan from the Iron Age Saka Cemetery in Shilikty Valley, Kazakhstan (vol 58, pg 157, 2016). RADIOCARBON, 60(1), V-V.
• Usmanova, E., Dremov, D., Kolbina, A., & Panyushkina, I. P. (2018). Mongol warriors of Jochi Ulus at the Karasuyr cemetery, Central Kazakhstan. Archaeology, Ethnology & Anthropology of Eurasia, 46(2), 106-113. doi:10.17746/1563-0102.2018.46.2.106-113
• Wright, W. E., Wright, W. E., Panyushkina, I. P., Panyushkina, I. P., Csank, A. Z., Csank, A. Z., Leavitt, S. W., Leavitt, S. W., Luczaj, J. A., & Luczaj, J. A. (2018). Comment on “Non-Mineralized Fossil Wood” by George E. Mustoe (Geosciences, 2018). Geosciences.
• Jull, A. J., Miyake, F., Panyushkina, I. P., Wacker, L., Salzer, M., Lange, T. E., Cruz, R., Masada, K., & Nakamura, T. (2017). A large 14C excursion at 5480BC indicates an abnormal sun.. Proceedings of the National Academy of Sciences USA, 114(881-884), 4. doi:10.1073/pnas.1613144114
• Leavitt, S. W., Mode, W. N., & Panyushkina, I. P. (2017).

  A 1400-Year Bølling-Allerød Tree-Ring Record from the U.S. Great Lakes Region

  . Tree-Ring Research, 73(2), 102-112. doi:10.3959/1536-1098-73.2.102
• Miyake, F., Jull, A. J., Panyushkina, I. P., Wacker, L., Salzer, M., Baisan, C. H., Lange, T., Cruz, R., Masuda, K., & Nakamura, T. (2017). Large 14C excursion in 5480 BC indicates an abnormal sun in the mid-Holocene. Proceedings of the National Academy of Sciences of the United States of America, 114(5), 881-884.
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  Radiocarbon content in tree rings can be an excellent proxy of the past incoming cosmic ray intensities to Earth. Although such past cosmic ray variations have been studied by measurements of C contents in tree rings with ≥10-y time resolution for the Holocene, there are few annual C data. There is a little understanding about annual C variations in the past, with the exception of a few periods including the AD 774-775 C excursion where annual measurements have been performed. Here, we report the result of C measurements using the bristlecone pine tree rings for the period from 5490 BC to 5411 BC with 1- to 2-y resolution, and a finding of an extraordinarily large C increase (20‰) from 5481 BC to 5471 BC (the 5480 BC event). The C increase rate of this event is much larger than that of the normal grand solar minima. We propose the possible causes of this event are an unknown phase of grand solar minimum, or a combination of successive solar proton events and a normal grand solar minimum.
• Miyake, F., Jull, A. J., Panyushkina, I. P., Wacker, L., Salzer, M., Baisan, C. H., Lange, T., Cruz, R., Masuda, K., & Nakamura, T. (2017). Large ¹⁴ C excursion in 5480 BC indicates an abnormal sun in the mid-Holocene. Proceedings of the National Academy of Sciences, 114(5), 881-884. doi:10.1073/pnas.1613144114
• Miyake, F., Masuda, K., Nakamura, T., Kimura, K., Hakozaki, M., Jull, A., Lange, T. E., Cruz, R., Panyushkina, I. P., Baisan, C., & Salzer, M. W. (2017). SEARCH FOR ANNUAL C-14 EXCURSIONS IN THE PAST. RADIOCARBON, 59(2), 315-320.
• Panyushkina, I. P. (2017). A 1400-Year Bølling-Allerød Tree-Ring Record from the U.S. Great Lakes Region. Tree-Ring Research.
• Panyushkina, I. P. (2017). Calendar Age of the Baigetobe Kurgan from the Iron Age Saka Cemetery in Shilikty Valley, Kazakhstan - CORRIGENDUM. Radiocarbon.
• Panyushkina, I. P. (2017). Large14C excursion in 5480 BC indicates an abnormal sun in the mid-Holocene. Proceedings of the National Academy of Sciences.
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  Radiocarbon content in tree rings can be an excellent proxy of the past incoming cosmic ray intensities to Earth. Although such past cosmic ray variations have been studied by measurements of14C contents in tree rings with ≥10-y time resolution for the Holocene, there are few annual14C data. There is a little understanding about annual14C variations in the past, with the exception of a few periods including the AD 774−77514C excursion where annual measurements have been performed. Here, we report the result of14C measurements using the bristlecone pine tree rings for the period from 5490 BC to 5411 BC with 1- to 2-y resolution, and a finding of an extraordinarily large14C increase (20‰) from 5481 BC to 5471 BC (the 5480 BC event). The14C increase rate of this event is much larger than that of the normal grand solar minima. We propose the possible causes of this event are an unknown phase of grand solar minimum, or a combination of successive solar proton events and a normal grand solar minimum.
• Panyushkina, I. P. (2017). Search for Annual 14C Excursions in the Past. Radiocarbon.
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  AbstractTwo radiocarbon excursions (AD 774–775 and AD 993–994) occurred due to an increase of incoming cosmic rays on a short timescale. The most plausible cause of these events is considered to be extreme solar proton events (SPE). It is possible that there are other annual 14C excursions in the past that have yet to be confirmed. In order to detect more of these events, we measured the 14C contents in bristlecone pine tree-ring samples during the periods when the rate of 14C increase in the IntCal data is large. We analyzed four periods every other year (2479–2455 BC, 4055–4031 BC, 4465–4441 BC, and 4689–4681 BC), and found no anomalous 14C excursions during these periods. This study confirms that it is important to do continuous measurements to find annual cosmic-ray events at other locations in the tree-ring record.
• Panyushkina, I. P. (2017). Search for annual¹⁴C excursions in the past. Radiocarbon.
• Panyushkina, I. P. (2017). Wild Apple Growth and Climate Change in Southeast Kazakhstan. Forests.
• Panyushkina, I. P., Leavitt, S. W., & Mode, W. N. (2017). A 1400-YEAR BOLLING-ALLEROD TREE-RING RECORD FROM THE US GREAT LAKES REGION. TREE-RING RESEARCH, 73(2), 102-112.
• Panyushkina, I. P., Mukhamadiev, N. S., Lynch, A. M., Ashikbaev, N. A., Arizpe, A. H., O'Connor, C. D., Abjanbaev, D., Mengdbayeva, G. Z., & Sagitov, A. O. (2017). Wild Apple Growth and Climate Change in Southeast Kazakhstan. FORESTS, 8(11).
• Agafonov, L. I., Meko, D. M., & Panyushkina, I. P. (2016).

  Temporal Extension of Discharge Records of Arctic Rivers with Floodplain Tree-Ring Widths

  . AGU Fall Meeting.
• Agafonov, L. I., Meko, D. M., & Panyushkina, I. P. (2016). Reconstruction of Ob River, Russia, discharge from ring widths of floodplain trees. JOURNAL OF HYDROLOGY, 543, 198-207.
• Agafonov, L. I., Meko, D., & Panyushkina, I. P. (2016). Reconstruction of Ob River, Russia, from ring widths of floodplain trees. Journal of Hydrology, 543, 198-217. doi:10.1016/j.jhydrol.2016.09.031
• Agafonov, L. I., Meko, D., & Panyushkina, I. P. (2016). Reconstruction of Ob River, Russia, from ring widths of floodplain trees. Journal of Hydrology.
• Leavitt, S. D., Livina, V., Mode, W. N., & Panyushkina, I. P. (2016).

  Climate variability of Late Pleistocene deglaciation in the North American midcontinent derived from tree rings

  . EGUGA.
• Miyake, F., Masuda, K., Nakamura, T., Kimura, K., Hakozaki, M., Jull, A. J., Lange, T. E., Cruz, R., Panyushkina, I. P., Baisan, C., & Salzer, M. (2016). Search for annual carbon-14 excursions in the past. Radiocarbon.
• Panyushkina, I. P. (2016). Calendar age of the baigetobe kurgan from the iron age saka cemetery in shilikty valley, Kazakhstan. Radiocarbon.
• Panyushkina, I. P. (2016). In Memoriam Mukhtar M. Naurzbaev 1959-2015. Dendrochronologia. doi:DOI: 10.1016/j.dendro.2016.01.002
• Panyushkina, I. P. (2016). In memoriam of Mukhtar M. Naurzbaev (1959-2015). Dendrochronologia.
• Panyushkina, I. P. (2016). Moisture record of the Upper Volga catchment between AD 1430 and 1600 supported by a ?¹³C tree-ring chronology of archaeological pine timbers. Dendrochronologia.
• Panyushkina, I. P. (2016). Reconstruction of Ob River, Russia, discharge from ring widths of floodplain trees. Journal of Hydrology.
• Panyushkina, I. P. (2016). Trends In Elemental Concentrations of Tree Rings From the Siberian Arctic. Tree-Ring Research.
• Panyushkina, I. P., & Panyushkina, I. P. (2016). A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2: Evidence from carbon isotope discrimination in paleo and CO2 enrichment studies. Global Change Biology.
• Panyushkina, I. P., Engovatova, A. V., & Karpukhin, A. (2016). Moisture record of the Upper Volga catchment between AD 1430-1600 supported derived by a δ13C tree-ring chronology of archaeological pine timbers. Dendrochronologia. doi:10.1016/j.dendro.2016.02.002
• Panyushkina, I. P., Karpukhin, A. A., & Engovatova, A. V. (2016). Moisture record of the Upper Volga catchment between AD 1430 and 1600 supported by a delta C-13 tree-ring chronology of archaeological pine timbers. DENDROCHRONOLOGIA, 39, 24-31.
• Panyushkina, I. P., Shishov, V. V., Grachev, A. M., Knorre, A. A., Kirdyanov, A. V., Leavitt, S. W., Vaganov, E. A., Chebykin, E. P., Zhuchenko, N. A., & Hughes, M. K. (2016). TRENDS IN ELEMENTAL CONCENTRATIONS OF TREE RINGS FROM THE SIBERIAN ARCTIC. TREE-RING RESEARCH, 72(2), 67-77.
• Panyushkina, I. P., Shishov, V. V., Grachev, A. M., Knorre, A. A., Kirdyanov, A., Leavitt, S. W., Vaganov, E. A., Chebykin, E. P., Zhuchenko, N. A., & Hughes, M. K. (2016). Trends In Elemental Concentrations of Tree Rings From the Siberian Arctic. Tree-Ring Research, 72(2), 67-77. doi:DOI 10.3959/1536-1098-72.02.67
• Panyushkina, I. P., Slyusarenko, I. Y., Sala, R., Deom, J., & Toleubayev, A. T. (2016). Calendar Age of the Baigetobe Kurgan from the Iron Age Saka Cemetery in Shilikty Valley, Kazakhstan. RADIOCARBON, 58(1), 157-167.
• Voelker, S. L., Brooks, J. R., Meinzer, F. C., Anderson, R., Bader, M. K., Battipaglia, G., Becklin, K. M., Beerling, D., Bert, D., Betancourt, J. L., Dawson, T. E., Domec, J. C., Guyette, R. P., Körner, C., Leavitt, S. W., Linder, S., Marshall, J. D., Mildner, M., Ogée, J., , Panyushkina, I., et al. (2016). A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2 : evidence from carbon isotope discrimination in paleo and CO2 enrichment studies. Global change biology, 22(2), 889-902.
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  Rising atmospheric [CO2 ], ca , is expected to affect stomatal regulation of leaf gas-exchange of woody plants, thus influencing energy fluxes as well as carbon (C), water, and nutrient cycling of forests. Researchers have proposed various strategies for stomatal regulation of leaf gas-exchange that include maintaining a constant leaf internal [CO2 ], ci , a constant drawdown in CO2 (ca  - ci ), and a constant ci /ca . These strategies can result in drastically different consequences for leaf gas-exchange. The accuracy of Earth systems models depends in part on assumptions about generalizable patterns in leaf gas-exchange responses to varying ca . The concept of optimal stomatal behavior, exemplified by woody plants shifting along a continuum of these strategies, provides a unifying framework for understanding leaf gas-exchange responses to ca . To assess leaf gas-exchange regulation strategies, we analyzed patterns in ci inferred from studies reporting C stable isotope ratios (δ(13) C) or photosynthetic discrimination (∆) in woody angiosperms and gymnosperms that grew across a range of ca spanning at least 100 ppm. Our results suggest that much of the ca -induced changes in ci /ca occurred across ca spanning 200 to 400 ppm. These patterns imply that ca  - ci will eventually approach a constant level at high ca because assimilation rates will reach a maximum and stomatal conductance of each species should be constrained to some minimum level. These analyses are not consistent with canalization toward any single strategy, particularly maintaining a constant ci . Rather, the results are consistent with the existence of a broadly conserved pattern of stomatal optimization in woody angiosperms and gymnosperms. This results in trees being profligate water users at low ca , when additional water loss is small for each unit of C gain, and increasingly water-conservative at high ca , when photosystems are saturated and water loss is large for each unit C gain.
• Voelker, S. L., Brooks, J. R., Meinzer, F. C., Anderson, R., Bader, M. K., Battipaglia, G., Becklin, K. M., Beerling, D., Bert, D., Betancourt, J. L., Dawson, T. E., Domec, J., Guyette, R. P., Körner, C., Leavitt, S. W., Linder, S., Marshall, J. D., Mildner, M., Ogée, J., , Panyushkina, I., et al. (2016). A dynamic leaf gas‐exchange strategy is conserved in woody plants under changing ambient CO₂: evidence from carbon isotope discrimination in paleo and CO₂ enrichment studies. Global Change Biology, 22(2), 889-902. doi:10.1111/gcb.13102
• Agafonov, L. I., Meko, D. M., & Panyushkina, I. P. (2015).

  Upper air teleconnections to Ob River flows and tree rings

  . EGUGA.
• Chang, C., Macklin, M. G., Panyushkina, I. P., Seitkaliyev, M., Toonen, W. H., & Voyakin, D. (2015).

  Tapping the Late Pleistocene-Holocene environmental change and alluvial geoarchaeology in Central Asia

  . EGU General Assembly Conference Abstracts.
• Leavitt, S. W., & Panyushkina, I. P. (2015).

  Climatic signals in tree-ring stable isotope records from the U.S. Great Lakes subfossil wood network: Successes and limitations

  . EGU GA.
• Macklin, M. G., Panyushkina, I. P., Toonen, W. H., Chang, C., Tourtellotte, P. A., Duller, G. A., Wang, H., & Prins, M. (2015). The influence of Late Pleistocene geomorphological inheritance and Holocene hydromorphic regimes on floodwater farming in the Talgar catchment, southeast Kazakhstan, Central Asia.. Quaternary Science Review. doi:10.1016/j.quascirev.2015.10.020
• Macklin, M. G., Panyushkina, I. P., Toonen, W., Chang, C., Tourtellotte, P. A., Duller, G., Wang, H., & Prins, M. A. (2015). The influence of Late Pleistocene geomorphological inheritance and Holocene hydromorphic regimes on floodwater farming in the Talgar catchment, southeast Kazakhstan, Central Asia. QUATERNARY SCIENCE REVIEWS, 129, 85-95.
• Panyushkina, I. P. (2015). Deglacial hydroclimate of midcontinental North America. Quaternary Research (United States).
• Panyushkina, I. P. (2015). The influence of Late Pleistocene geomorphological inheritance and Holocene hydromorphic regimes on floodwater farming in the Talgar catchment, southeast Kazakhstan, Central Asia. Quaternary Science Reviews.
• Panyushkina, I. P. (2015). Tree-Ring Investigation of Holocene Flood-Deposited Wood from the Oneida Lake Watershed, New York State. Tree-Ring Research.
• Panyushkina, I. P., Leavitt, S. W., Domack, E. W., & Wiedenhoeft, A. C. (2015). TREE-RING INVESTIGATION OF HOLOCENE FLOOD-DEPOSITED WOOD FROM THE ONEIDA LAKE WATERSHED, NEW YORK STATE. TREE-RING RESEARCH, 71(2), 83-94.
• Voelker, S. L., Brooks, R. J., Meinzer, F. C., Anderson, R., Bader, M. K., Battipaglia, G., Becklin, K. M., Beerling, D., Bert, D., Betancourt, H. L., Dawson, T. E., Domec, J. C., Guyette, R. P., Leavitt, S. W., Korner, C., Linder, C., Marshall, J. D., Mildner, M., Ogee, J., , Panyushkina, I. P., et al. (2015). A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2: evidence from carbon isotope discrimination in paleo and CO2 enrichment studies. Global Change Biology. doi:10.1111/gcb.13102
• Voelker, S. L., Stambaugh, M. C., Guyette, R. P., Feng, X., Grimley, D. A., Leavitt, S. W., Panyushkina, I. P., Grimm, E. C., Marsicek, J. P., Shuman, B., & Curry, B. B. (2015). Deglacial hydroclimate for Midcontinental North America. Quaternary Research. doi:10.1016/j.yqres.2015.01.001
• Voelker, S. L., Stambaugh, M. C., Guyette, R. P., Feng, X., Grimley, D. A., Leavitt, S. W., Panyushkina, I., Grimm, E. C., Marsicek, J. P., Shuman, B., & Curry, B. B. (2015). Deglacial hydroclimate of midcontinental North America. QUATERNARY RESEARCH, 83(2), 336-344.
• Ashikbaev, N. A., Lynch, A. M., Mukhamadiev, N. S., O’Connor, C. D., Panyushkina, I. P., & Sagitov, A. O. (2014).

  The historical role of Ips hauseri (Coleoptera: Curculionidae) in the spruce forest of Ile-Alatausky and Medeo National Parks

  . In: Toleubayev, Kazbek, ed. Information Bulletin IOBC EPRS 46: Research Articles of the International Scientific Conference; Plant Protection for Ecological Sustainability of Agrobiocenoses; 21-24 April 2014; Kazakhstan. Almaty, Kazakhstan: The Kazakh Research Institute for Plant Protection and Quarantine, International Organization for Biological Control, East Palearctic Region Section. p. 92-94..
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  On 17 May and 27 June 2011 severe cyclonic storms damaged several hundred hectares of spruce forest (Picea schrenkiana) in the Tian Shan Mountains. Bark beetle populations increased rapidly in dead and damaged trees, particularly Ips hauseri, I. typographus, I. sexdentatus, and Piiyogenesperfossus (all Coleoptera: Curculionidae), and there is concern about the likelihood of a catastrophic bark beetle outbreak. Little is known about the frequency, extent, or severity of either large storm events or bark beetle outbreaks in the Tian Shan Mountains. The ecology and outbreak dynamics of I. hauseri, the predominant native bark beetle, are also poorly known. We undertook a dendrochronological study to determine the frequency of bark beetle outbreaks in the Tian Shan spruce forests.
• Jull, A. J., Panyushkina, I. P., Lange, T. E., Kukarskih, V. V., Myglan, V. S., Clark, K. J., Salzer, M. W., Burr, G. S., & Leavitt, S. W. (2014). Excursions in the ¹⁴C record at A.D. 774–775 in tree rings from Russia and America. Geophysical Research Letters, 41(8), 3004-3010. doi:10.1002/2014gl059874
• Jull, A., Panyushkina, I. P., Lange, T. E., Kukarskih, V. V., Myglan, V. S., Clark, K. J., Salzer, M. W., Burr, G. S., & Leavitt, S. W. (2014). Excursions in the 14Crecord at A. D. 774-775 in tree rings from Russia and America. GEOPHYSICAL RESEARCH LETTERS, 41(8), 3004-3010.
• Macklin, M. G., Panyushkina, I. P., & Toonen, W. (2014).

  Holocene River Dynamics, Climate Change and Floodwater Farming in the Watersheds of the Pamir and Tien Shan Mountains of Inner Asia

  . 2014 AGU Fall Meeting.
• Panyushkina, I. P. (2014). Excursions in the ¹⁴C record at A.D. 774-775 in tree rings from Russia and America. Geophysical Research Letters.
• Chebykin, E. P., Grachev, A. M., Hughes, M. K., Knorre, A. A., Leavitt, S. W., Naurzbaev, M. M., Panyushkina, I. P., Shishov, V. V., Vaganov, E. A., Zhuchenko, N. A., Ваганов, Е., Грачев, А., Жученко, Н. А., Кнорре, А., Левитт, С. У., Наурзбаев, М. М., Панюшкина, И. И., Хьюз, М., Чебыкин, Е. П., & Шишов, В. И. (2013).

  Методология получения 600-летней многоэлементной летописи на основе годичных колец лиственницы с полуострова Таймыр, Россия

  . Journal of Siberian Federal University. Biology.
• Grachev, A., Vaganov, E. A., Leavitt, S. W., Panyushkina, I. P., Chebykin, E., Shishov, V., Knorre, A., Zhuchenko, N., Hughes, M. H., & Naurzbaev, M. (2013). Methodology for development of a 600-year tree-ring multi-element record of larch from the Taymir Peninsula, Russia. Journal of Siberian Federal University, Biology, 1(6), 61-72.
• Panyushkina, I. P. (2013). Ancient boreal forests under the environmental instability of the glacial to postglacial transition in the great lakes region (14 000 -11 000 years BP). Canadian Journal of Forest Research.
• Panyushkina, I. P. (2013). Elemental composition of tree rings: A new perspective in biogeochemistry. Doklady Biological Sciences.
• Panyushkina, I. P. (2013). Radiocarbon and Tree-Ring Dates of the Bes-Shatyr #3 Saka Kurgan in the Semirechiye, Kazakhstan. Radiocarbon.
• Panyushkina, I. P., & Leavitt, S. W. (2013). Ancient boreal forests under the environmental instability of the glacial to postglacial transition in the Great Lakes region (14 000-11 000 years BP). CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 43(11), 1032-1039.
• Panyushkina, I. P., Grigoriev, F. M., Lange, T., & Alimbay, N. (2013). Radiocarbon and tree-ring dates of the Bes-Shatyr #3 Saka kurgan in the Semirechiye. Radiocarbon.
• Panyushkina, I., Grigoriev, F., Lange, T., & Alimbay, N. (2013). RADIOCARBON AND TREE-RING DATES OF THE BES-SHATYR #3 SAKA KURGAN IN THE SEMIRECHIYE, KAZAKHSTAN. RADIOCARBON, 55(2-3), 1297-1303.
• Vaganov, E. A., Grachev, A. M., Shishov, V. V., Panyushkina, I. P., Leavitt, S. W., Knorre, A. A., Chebykin, E. P., & Menyailo, O. V. (2013). Elemental composition of tree rings: A new perspective in biogeochemistry. Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections, 453, 375-9.
• Vaganov, E. A., Grachev, A., Shishov, V., Panyushkina, I. P., Leavitt, S. W., Knorre, A., Chebykin, A., & Menyailo, O. (2013). Elemental composition in dendrochronology as a prospective approach for biogeochemical studies. Doklady Biological Sciences. doi:10.7868/S0869565213360279
• Lynch, A. M., Mukhamadiev, N. S., O’Connor, C. D., Panyushkina, I. P., & Sagitov, A. O. (2012).

  Response of native and exotic bark beetles to high-energy wind event in the Tian Shan Mountains, Kazakhstan

  . AGUFM.
• Panyushkina, I. P. (2012). Climate-Induced Changes in Population Dynamics of Siberian Scythians (700-250 BC). CLIMATES, LANDSCAPES, AND CIVILIZATIONS, 198, 145-154.
• Panyushkina, I. P. (2012). High-resolution terrestrial MIS3 environment from trees encapsulated in landslide deposits of Oregon, USA. Quaternary International.
• Panyushkina, I. P. (2012). Impacts of cooling climate on prehistoric herding and farming strategies during the Bronze-Iron Age transition on the margins of the Eurasian steppe. Quaternary International.
• Brukhanova, M. A., Grachev, A. M., Kirdyanov, A. V., Knorre, A. A., Leavitt, S. W., Panyushkina, I. P., & Vaganov, E. A. (2010).

  Isotope variability in larch tree rings of Siberia: climate and ecology

  . AGUFM.
• Panyushkina, I. P. (2010). Ancient Tree Ring Archives in the U.S. Great Lakes Region. Eos, Transactions American Geophysical Union.
• Panyushkina, I. P. (2010). Ancient tree ring archives in the U.S. great lakes region. Eos.
• Panyushkina, I. P. (2010). First tree-ring chronology from Andronovo archaeological timbers of Bronze Age in Central Asia. Dendrochronologia.
• Panyushkina, I. P., & Leavitt, S. W. (2010). Tapping Ancient Tree-Ring Archives in the U.S. Great Lakes Region. EOS Transactions, AGU.
• Panyushkina, I. P., Chang, C., Clemens, A. W., & Bykov, N. (2010). First tree-ring chronology from Andronovo archaeological timbers of Bronze Age in Central Asia. DENDROCHRONOLOGIA, 28(1), 13-21.
• Panyushkina, I. P. (2008). Calendar Age of Lisakovsky Timbers Attributed to Andronovo Community of Bronze Age in Eurasia. Radiocarbon.
• Panyushkina, I. P. (2008). Environment and paleoecology of a 12 ka mid-North American Younger Dryas forest chronicled in tree rings. Quaternary Research.
• Panyushkina, I. P., Leavitt, S. W., Thompson, T. A., Schneider, A. F., & Lange, T. (2008). Environment and paleoecology of a 12 ka mid-North American Younger Dryas forest chronicled in tree rings. QUATERNARY RESEARCH, 70(3), 433-441.
• Panyushkina, I. P., Mills, B. J., Usmanova, E. R., & Cheng, L. i. (2008). CALENDAR AGE OF LISAKOVSKY TIMBERS ATTRIBUTED TO ANDRONOVO COMMUNITY OF BRONZE AGE IN EURASIA. RADIOCARBON, 50(3), 459-469.
• Leavitt, S. W., Panyushkina, I. P., Lange, T., Cheng, L. i., Schneider, A. F., & Hughes, J. (2007). Radiocarbon "Wiggles" in great lakes wood at about 10,000 to 12,000 BP. RADIOCARBON, 49(2), 855-864.
• Panyushkina, I. P. (2007). Floating Larch Tree-Ring Chronologies from Archaeological Timbers in the Russian Altai Between about 800 BC and AD 800. Radiocarbon.
• Panyushkina, I. P. (2007). Radiocarbon “Wiggles” in Great Lakes Wood at About 10,000 to 12,000 BP. Radiocarbon.
• Panyushkina, I. P., Cheng, L., Hughes, J., Lange, T., Leavitt, S. W., & Schneider, A. F. (2007).

  RADIOCARBON WIGGLES IN GREAT LAKES WOOD AT ABOUT 10,000 TO 12,000 BP

  . Radiocarbon, 49(2), 855-864. doi:10.1017/s0033822200042727
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  High-resolution radiocarbon calibration for the last 14,000 cal yr has been developed in large part using European oaks and pines. Recent subfossil wood collections from the Great Lakes region provide an opportunity to measure 14C activity in decadal series of rings in North America prior to the White Mountains bristlecone record. We developed decadal 14C series from wood at the classic Two Creeks site (~11,850 BP) in east-central Wisconsin, the Liverpool East site (~10,250 BP) in northwestern Indiana, and the Gribben Basin site (~10,000 BP) in the Upper Peninsula of Michigan. Initial AMS dates on holocellulose produced younger-than-expected ages for most Two Creeks subsamples and for a few samples from the other sites, prompting a systematic comparison of chemical pretreatment using 2 samples from each site, and employing holocellulose, AAA-treated holocellulose, alpha-cellulose, and AAA-treated whole wood. The testing could not definitively reveal the source of error in the original analyses, but the best original ages together with new AAA-treated holocellulose and a-cellulose ages were visually fitted to the IntCal04 calibration curve at ages of 13,76013,530 cal BP for the Two Creeks wood, 12,10012,020 cal BP for Liverpool East, and 11,30011,170 cal BP for Gribben Basin. The Liverpool East age falls squarely within the Younger Dryas (YD) period, whereas the Gribben Basin age appears to postdate the YD by ~300 yr, although high scatter in the decadal Gribben Basin results could accommodate an older age nearer the end of the YD.
• Panyushkina, I., Sljusarenko, I., Bikov, N., & Bogdanov, E. (2007). Floating larch tree-ring chronologies from archaeological timbers in the Russian Altai between about 800 BC and ad 800. RADIOCARBON, 49(2), 693-702.
• Sljusarenko, I., Bikov, N., Bogdanov, E., & Panyushkina, I. P. (2007).

  FLOATING LARCH TREE-RING CHRONOLOGIES FROM ARCHAEOLOGICAL TIMBERS IN THE RUSSIAN ALTAI BETWEEN ABOUT 800 BC AND AD 800

  . Radiocarbon, 49(2), 693-702. doi:10.1017/s0033822200042582
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  We obtained over 200 archaeological wood specimens from the southeastern part of the Altai Mountains (Russia) to establish accurate calendar dates of the timbers using both radiocarbon and tree-ring analyses. Most timbers came from small and elite tombs of the Pazyryk culture (Siberian Scythians of the Iron Age period). Timbers from Hun-Sarmatian and Turk times (1st millennium AD) were studied for the first time. Three floating tree-ring width chronologies of larch (Larix sibirica) with lengths of 486 yr to 144 yr were developed from the tree-ring data. Tree rings of the composite 486-yr chronology of the Pazyryk culture represent the regional scale of Altai tree-ring width variability between about 720240 BC. The composite chronology dates the earliest construction of Pazyryk culture tombs to ~320 BC (ordinary tombs) and the latest ones at 240 BC (Pazyryk noble tomb #5). The composite chronology might be used for tree-ring dating wood from Scythian tombs in the region. It will also help confirm the precision of 14C dating of the Scythian tombs around the Hallstatt plateau of 14C calibration curves. We developed a 110-yr decadal 14C sequence from the Kurayka site that dates Kok-Pash culture timbers back to cal AD 240 (Hun-Sarmatian period). 14C dates of wooden poles from 3 sites of Turk stone enclosures suggested wood cutting dates between cal AD 470 and 830. The results demonstrate that crossdating tree rings along with 14C dating of crossdated rings provide the most reliable and highest precision dates for these archaeological sites.
• Hunter, R. D., Panyushkina, I. P., Leavitt, S. W., Wiedenhoeft, A. C., & Zawiskie, J. (2006). A multiproxy environmental investigation of Holocene wood from a submerged conifer forest in Lake Huron, USA. QUATERNARY RESEARCH, 66(1), 67-77.
• Leavitt, S. W., Panyushkina, I. P., Lange, T., Wiedenhoeft, A., Cheng, L. i., Hunter, R. D., Hughes, J., Pranschke, F., Schneider, A. F., Moran, J., & Stieglitz, R. (2006). Climate in the great lakes region between 14,000 and 4000 years ago from isotopic composition of conifer wood. RADIOCARBON, 48(2), 205-217.
• Panyushkina, I. P. (2006). A multiproxy environmental investigation of Holocene wood from a submerged conifer forest in Lake Huron, USA. Quaternary Research.
• Panyushkina, I. P. (2006). Climate in the Great Lakes Region Between 14,000 and 4000 Years Ago from Isotopic Composition of Conifer Wood. Radiocarbon.
• Panyushkina, I. P., Cheng, L., Hughes, J., Hunter, R. D., Lange, T., Leavitt, S. W., Moran, J. M., Pranschke, F., Schneider, A. F., Stieglitz, R., & Wiedenhoeft, A. C. (2006).

  CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD

  . Radiocarbon, 48(2), 205-217. doi:10.1017/s0033822200066406
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  The isotopic composition of ancient wood has the potential to provide information about past environments. We analyzed the δ13C, δ18O, and δ2H of cellulose of conifer trees from several cross-sections at each of 9 sites around the Great Lakes region ranging from ~4000 to 14,000 cal BP. Isotopic values of Picea, Pinus, and Thuja species seem inter- changeable for δ18O and δ2H comparisons, but Thuja appears distinctly different from the other 2 in its δ13C composition. Iso- topic results suggest that the 2 sites of near-Younger Dryas age experienced the coldest conditions, although the Gribben Basin site near the Laurentide ice sheet was relatively dry, whereas the Liverpool site 500 km south was moister. The spatial isotopic variability of 3 of the 4 sites of Two Creeks age shows evidence of an elevation effect, perhaps related to sites farther inland from the Lake Michigan shoreline experiencing warmer daytime growing season temperatures. Thus, despite floristic similarity across sites (wood samples at 7 of the sites being Picea), the isotopes appear to reflect environmental differences that might not be readily evident from a purely floristic interpretation of macrofossil or pollen identification.
• Lange, T., Leavitt, S. W., Panyushkina, I. P., & Schneider, A. F. (2005).

  Tree-Ring Investigation of an in situ Younger Dryas-Age Spruce Forest in the Great Lakes Region of N. America

  . AGU FM.
• Panyushkina, I. P., Ovtchinnikov, D. V., & Adamenko, M. F. (2005). Mixed response of decadal variability in larch tree-ring chronologies from upper tree-lines of the Russian Altai. TREE-RING RESEARCH, 61(1), 33-42.
• Panyushkina, I. P. (2004). Tree-Ring Records of Near-Younger Dryas Time in Central North America—Preliminary Results from the Lincoln Quarry Site, Central Illinois, Usa. Radiocarbon.
• Panyushkina, I. P., Leavitt, S. W., Wiedenhoeft, A., Noggle, S., Curry, B., & Grimm, E. (2004). Tree-ring records of near-younger dryas time in central north America - Preliminary results from the Lincoln quarry site, central Illinois, USA. RADIOCARBON, 46(2), 933-941.
• Panyushkina, I. P. (2003). Summer temperature in northeastern Siberia since 1642 reconstructed from tracheid dimensions and cell numbers of Larix cajanderi. Canadian Journal of Forest Research.
• Panyushkina, I. P., Hughes, M. K., Vaganov, E. A., & Munro, M. (2003). Summer temperature in northeastern Siberia since 1642 reconstructed from tracheid dimensions and cell numbers of Larix cajanderi. CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 33(10), 1905-1914.
• Panyushkina, I. P., Adamenko, M., & Ovtchinnikov, D. V. (2002). A 1,000-year tree-ring chronology of larch in the Altai Mountains and its application to summer temperature reconstruction. Geography and Natural Resources.
• Danzer, S. R., Leavitt, S. W., Panyushkina, I. P., Mergner, A., Garcia, E., & Best-svob, V. (2001). Xylem Tracheid Development in Pinus Resinosa Seedlings in Controlled Environments. Tree-Ring Research, 57(1), 45-54.
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  Progressive tree -ring xylem cell size changes may reveal the influence of changing environment during the growing season. This study examines xylem tracheid cell growth in red pine (Pious resinosa Ait.) seedlings grown in cabinets under controlled environment, where single parameters (temperature, light, soil moisture and CO2) were varied step -wise in each chamber at ca. 30 -day increments for ca. 6 months. Control and temperature treatments were replicated. Cross -sections (20 Am thick) sliced with a sliding microtome from each of four seedling stems from each cabinet were mounted on glass slides. Lumen diameters and cell -wall thickness were measured on 4 orthogonal tracheid radial files on 4 radii of each stem. Mean cell sizes were 11 -17 µm among treatments and growth periods, whereas numbers of cells formed averaged 0.2 -1.3 cells per day. Cell size increased throughout the experiment in most of the treatments, including one of the control treatments and those with the greatest potential to limit growth (decreasing temperature, light and soil moisture). Soil moisture was the only environmental parameter that tended to cause late declining growth, and CO, up to 500 (Amol mol -' did not appear to influence cell development. Despite a substantial range of environmental shifts in the chambers (100 p,mol mol -' CO2; 125 pEinsteins m
• Panyushkina, I. P., Danzer, S., Leavitt, S. W., Mergner, A., Garcia, E., & Best-Svob, V. (2001). Xylem tracheid development in Pinus resinosa seedling in controlled environments.. Tree-Ring Research.
• Panyushkina, I. P., Ovtchinnikov, D. V., & Adamenko, M. (2000). A 1105-year tree-ring chronology in Altai region and its application for reconstruction of summer temperature.. Geolines, 11.
• Panyushkina, I. P., & Arbatskaya, M. K. (1999). Dendrochronological approach to study of flammability of forests in Evenkiya (Siberia). Siberian Journal of Ecology, 2, 167-173.
• Panyushkina, I. P., & Ovtchinnikov, D. (1999). Climate impact on larch radial growth in the Altai Mountains. Russian Journal of Forestry Sciences.
• Panyushkina, I. P., Vlasenko, V., & Ovchinnikova, T. M. (1999). Dynamics of forest diversity in the Stolby Nature Reserve during the 20th century. Botanical Research in Siberia, 7, 54-72.
• Panyushkina, I. P. (1997). Reconstruction of summer air temperature in the eastern Taimyr over the last 840 years. Russian Journal of Ecology.
• Panyushkina, I. P., Vaganov, E. A., & Shishov, V. (1997). Dendroclimatic analysis of larch increment in northern Central Siberia. Geography and Natural Resources, 2, 80-90.
• Vaganov, E. A., Panyushkina, I. P., & Naurzbaev, M. M. (1997). Reconstruction of summer air temperature in the eastern Taimyr over the last 840 years. RUSSIAN JOURNAL OF ECOLOGY, 28(6), 355-359.
• Panyushkina, I. P., Vaganov, E. A., & Shishov, V. (1996). Spatial temporal variation of radial tree growth in the north of Middle Siberia in relation to climate. Dendrochronologia, 14, 115-126.
• Panyushkina, I. P., Vaganov, E. A., & Shishov, v. (1996). Statistical analysis of larch tree ring chronologies from the Siberian Arctic.. Geography and Natural Resources, 4, 93-103.

Proceedings Publications

• Usmanova, E. R., Dmitriyev, E. A., Kolbina, A., Panyushkina, I. P., & Parshin, Y. (2024).

  Artifact as “Landscape of Death" marker in the funeral rites of the Ulus of Jochi from the 2023-excavation materials of the Karasuyr complex in Ulytau, Central Kazakhstan.
  

  . In Traces of Changes and Processes in Archaeological Objects, 282.
• Antonov, M. A., Djumabekov, D. A., Maken, A. B., Panyushkina, I. P., Usmanova, E. R., & Fomin, V. N. (2023). Landscape of military conflicts of the Golden Horde in Ulytau: the question of methodology for studying the Karasuyr and Altynshoky complexes. . In International School of Archaeology “Origins of Urbanization in North Asia", 12, 118-135.
• Panyushkina, I. P., & Usmanova, E. (2022, March). Profane and sacred landscapes of military conflicts during the Golden Horde in Ulytau: Karasuyr and Altynshoky. In Ancient and medieval states and unions of nomads in Eurasia from the context of new archaeological and written sources.
• Usmanova, E., Chechushkov, I., & Panyushkina, I. P. (2022). "Horse of Astarte"- ritual symbolism of the Bronze Age horse burial (Lisakovsk area, Kazakhstan). In 10 Readings in memory of M. P. Gryaznov. Eurasia from Chalcolithic to the Early Middle Ages: Innovations, Contacts, Transmission of Ideas and Technologies..
• Panyushkina, I. P. (2019). New Sintashta materials from Turgay.
• Shevnina, I., Logvin, A., & Panyushkina, I. P. (2019, November). New materials of Sintashta culture in Turgay.. In Antiquities of East Europe, South Asia and South Siberia in the context of interactions within the Eurasian cultural landscape: new data and concepts, 2, 18-22.
• Panyushkina, I. P. (2016). THE STABLE-ISOTOPIC VIEW OF TREE-RING SERIES FROM THE GREAT LAKES AREA BETWEEN CA. 12 KA AND 13.8 KA.
• Panyushkina, I. P. (2016). TREE-RING EVIDENCE OF CLIMATE VARIABILITY OF LATE PLEISTOCENE DEGLACIATION IN THE NORTH AMERICAN MIDCONTINENT.
• Sagitov, A. O., Mukhamediev, N. M., Ashikbaev, N. A., Mendibaeva, J., Panyushkina, I. P., Lynch, A. M., & O'Connor, C. D. (2015, September). Toward dendrochronological research of wild- apple forests in the southeastern Kazakhstan. In Int. Conference on Innovative and Ecologically Safe Technologies for Plant Protection.
• Usmanova, E. R., Dremov, I. I., & Panyushkina, I. P. (2015, October). Burials of Mongol Buddhists between late 13th and early 14th Centuries in Central Kazakhstan. In VI Int. Conference on Ancient Cultures of Northern China, Mongolia and Baikalian Siberia, 2, 515-528.
• Panyushkina, I. P., Mills, B. J., & Usmanova, E. R. (2011, April). Revising calendar age of the Alakul and Fedorovo cultures with tree rings from the Lisakovsky burial site.. In Int. Archaeological Conf. “Margulan Readings”.

Presentations

• Jull, A. J., Panyushkina, I. P., Molnar, M., Varga, T., Livina, V., Cheng, L., Baisan, C., Myglan, V., Wiles, G., Wiesenberg, N., & Miyake, F. (2023, October).

   Records of space weather found in ¹⁴C production rates in tree rings and connections to solar activity and solar flare events. 

  . NASA Sun-Climate Symposium, 16-20 Oct, 2023, Flagstaff, AZ.. Arizona: NASA.
• Jull, A., Panyushkina, I. P., Molnar, N., Varga, T., Livina, V., Cheng, L., Baisan, C., Myglan, V., Sljusarenko, I., Wiles, G., Wiesenberg, N., & Miyake, F. (2023, September).

  Solar flare and other cosmic-ray effects on ¹⁴C production rates in tree rings from high- and mid-latitudes. 

  . Second Latin America Radiocarbon conference, Sept 4-8, 2023, Mexico City.. Mexico City.
• Panyushkina, I. P., Jull, A. J., Livina, V., Molnar, M., Varga, T., Myglan, V., & Sljusarenko, I. (2023, September).

  "14C spike-calibration" of annually resolved AMS measurements from archaeological wood of Siberian Scythian, first millennia BCE.

  . Second Latin America Radiocarbon conference, Sept 4-8, 2023, Mexico City.. Mexico.
• Panyushkina, I. P., Jull, A. T., Livina, V., Molnar, M., & Varga, T. (2023, October).

  Two in one: climate and solar activity proxies from tree rings. 

  . NASA Sun-Climate Symposium, Oct 16-20, 2023, Flagstaff, AZ.. Flagstaff, Arizona: NASA.
• Panyushkina, I. P., Meko, D. M., Thaxton, R., Myglan, V., Agafonov, L. I., & Shiklomanov, A. I. (2023, Feb).

  Understanding response of seasonal hydrology to Arctic Amplification: tree-ring modeling of Siberian Arctic flow.  

  . ASSW Science Symposium: The Arctic in the Anthropocene. Feb 21 – 24, 2023,Vienna, Austria.. Austria.
• Panyushkina, I. P., Meko, D., Thaxton, R., Shiklomanov, A., Prusevich, A., Glidden, S., & Lammers, R. (2023, May). Centennial and decadal variability of Yenisei River flow assessed with the online tool TRISH - Tree-Ring Integrative System for Hydrology. 
  . Japan Geophysical Union Meeting 2023, May 22-Jun 3, 2022, Chiba, Japan.. Japan: JGU.
• Shiklomanov, A. I., Proussevitch, A., Lammers, R., Glidden, S., Panyushkina, I. P., Meko, D. M., & Kuklina, V. (2023, December).

  Express analysis of hydro-climatic changes and extremes with a recently modified web-integrated system for environmental applications. 

  . AGU Fall Meeting, Abstract #1416019.AGU.
• Panyushkina, I. P. (2022, January). Do we really know how much heat and energy pan-Arctic rivers deliver to the Arctic Ocean?. College of Science Outreach program. University of Arizona, Tucson.
• Panyushkina, I. P., Thaxton, R., Meko, D., & Shiklomanov, A. (2022, Jun). Increased winter runoff in Siberia modeled with tree rings as evidence for the recent high rate of permafrost degradation. Conference on Frontiers in Hydrology. Puerto Rico: AGU.
• Thaxton, R., Panyushkina, I. P., Meko, D., & van Arx, J. (2022, Jun). How do wood anatomical traits in Salix vary in response to flooding? A case study from the Yenisei River, Siberia. Frontiers in Hydrology. Puerto Rico: AGU.
• Panyushkina, I. P. (2021, July). C14 tree-ring records: from SEP to Supernova. Seminar RAS Institute of Animal and Plant Ecology. Yekaterinburg, Russia.
• Panyushkina, I. P. (2021, March). Living with the star: Carbon-14 excursions in tree rings as the evidence for extreme solar activity. Tree-Ring Talks Seminar. University of Arizona, Tucson.
• Panyushkina, I. P. (2021, November). Do Rivers matter? A tree-ring case study of seasonal streamflow changes in the Yenisei River Basin. Tree-Ring Talks, Seminar. University of Arizona, Tucson.
• Jull, A. J., Miyake, F., Panyushkina, I. P., Lange, T. E., Nakamura, T., & Basin, C. (2017, July). More rapid carbon-14 excursions in the tree-ring record: A record of different kind of solar activity at about 800BC?. Radiocarbon in the Environment II. Debrecen, Hungary: Radiocarbon.
• Heaton, T., Baisan, C., Pearson, C. L., Panyushkina, I. P., Miyake, F., & Jull, A. J. (2019, Spring). Annual carbon-14 variability in tree-rings: Causes and Implications for the calibration curve. EGU 2019. Vienna, Austria: EGU.
• Jull, T., Miyake, F., & Panyushkina, I. P. (2019, Dec). Evidence for solar-flare and other cosmic-ray events in the 14C record in tree rings and in other records.. 8th East Asia AMS Symposium. Nagoya, Japan.
• Jull, T., Miyake, F., Panyushkina, I. P., Masuda, K., & Nakamura, T. (2019, May). Intercomparison of AMS data between laboratories based on annual tree-ring data sequences. Radiocarbon and Archaeology Int. Conference. Georgia, USA.
• Leavitt, S. W., & Panyushkina, I. P. (2019, Nov). Long C and O isotope tree-ring chronologies from the deglaciation of Northern America.. IEECAS International Symposium “Multiscale Climate Variability and Dynamics”. Xian, China.
• Miyake, F., Masuda, K., Nakamura, K., Hakozaki, M., Tokanai, F., Jull, T., Panyushkina, I. P., Wacker, L., & Moriya, T. (2019, July). Cosmogenic evidences of past SEP events. 36th International Cosmic Ray Conference (ICRC2019). Madison, WI.
• Panyushkina, I. P., & Jull, T. (2019, Nov). Impact of 14C excursions on climate variability.. IEECAS Symposium “Multiscale Climate Variability and Dynamics”. Xian, China.
• Waker, L., Heaton, T., Baisin, C., Pearson, C. L., Panyushkina, I. P., Miyake, F., & Jull, A. J. (2019, April). Annual carbon-14 variability in tree-rings: Causes and Implications for the calibration curve. EGU. Vienna, Austria: EGU.
• Gutiérrez García, G., Panyushkina, I. P., & Leavitt, S. W. (2018, June). Tree, tree-ring and isotope prospects for identifying Holocene abrupt climate change in North America. Holocene Abrupt Climatic Events and the Environmental Effects Workshop. Xi'an, China: Institute of Earth Environment, CAS, Xi'an, China.
• Jull, T., Miyake, F., Panyushkina, I. P., Baisan, C., Masuda, K., Nakamura, T., Kimura, K., Mitsutani, T., Molnar, M., Vagra, T., & Janovics, R. (2018, June). Structure of carbon-14 excursions in tree-rings at 800 BC. 23rd Int. Radiocarbon Conference. Trondheim, Norway.
• Leavitt, S. W., Panyushkina, I. P., & Gutierrez, G. (2018, June). Tree, Tree-Ring and Isotope Prospects for Identifying Holocene Abrupt Climate Change in North America.. IEECAS Workshop “Holocene abrupt climatic events and the environmental effects”. Xian, China.
• Miyake, F., Masuda, K., Nakamura, T., Tokanai, F., Moriya, R., Takeyama, M., Kimura, K., Hakozaki, M., Mitsutani, T., Jull, T., & Panyushkina, I. P. (2018, June). Annual cosmic ray events shown in carbon-14 data from the BC 10th to AD 14th century. 23rd Int. Radiocarbon Conference,. Trondheim, Norway.
• Nakamura, T., Masua, K., Miyake, F., Baisan, C., Pearson, C. L., Panyushkina, I. P., & Jull, A. J. (2018, June). Structure of carbon-14 excursions in tree rings at 800BC and 1050AD. 23rd International Radiocarbon Conference, Trondheim. Trondheim, Norway: NTNU Trondheim.
  More info

  Oral presentation
• Panyushkina, I. P. (2018, June). Impact of runoff variability on the Saka farmers in Central Asia, first millennium BC. IEECAS Workshop “Holocene abrupt climatic events and the environmental effects". Xian, China.
• Dremov, I., Usmanova, E., & Panyushkina, I. P. (2017, April). Medieval Mongols and Oirats from the Kazakh and Southern Russian Steppe.. RAS Institute of Archaeology on Oriental Antiquities in the History of Russia: Medieval Archaeology.. Moscow, RU.
• Jull, T., Miyake, F., & Panyushkina, I. P. (2017, Aug). Rapid carbon-14 excursions in the tree-ring record: Solar minima, solar flares and other events?. IntCal and Dendrochronology Workshop, 14th Int. AMS Conf.. Ottawa, Canada.
• Jull, T., Miyake, F., & Panyushkina, I. P. (2017, July). Rapid carbon-14 excursions in the tree-ring record: A record of different kinds of solar activity?. 2nd Int. Conference on Radiocarbon in the Environment.. Debrecen, Hungary.
• Mukhamadiev, N., Ashikbaev, N., Mendibaeva, G., & Panyushkina, I. P. (2017, Sept). Dendrochronological studies in mountain forests of the southern Kazakhstan.. Int. Conference “RussDendro-2017”. Barnaul, RU.
• Panyushkina, I. P. (2017, April). The people and droughts of the first millennia BC: a study of tree-ring widths and carbon isotopes from Saka and Siberian Scythian archaeological timbers.. PAGES workshop “Overcoming reductionism when linking climate variability with human history: a cross-disciplinary approach in the Altai Mountains. Krasnoyarsk, RU.
• Panyushkina, I. P., Jull, T., & Miyake, F. (2017, Sept). Nowhere to run, nowhere to hide: identifying Miyake events with tree rings.. Int. Conference “RussDendro-2017”. Barnaul, RU.
• Panyushkina, I. P., Leavitt, S. W., & Mode, W. (2017, Aug). Late Pleistocene tree-ring record of millennium-scale from the North America.. IntCal and Dendrochronology Workshop, 14th Int. AMS Conf.. Ottawa, Canada.
• Panyushkina, I. P., Leavitt, S. W., & Mode, W. (2017, August). Late Pleistocene millennium-scale tree-ring record from North America. The 14th International Conference on Accelerator Mass Spectrometry, IntCal and Dendrochronology Workshop, 14-18 August 2017. University of Ottawa, Canada.
• Wacker, L., Adolphi, F., Bleicher, N., Büntgen, U., Fahrni, S., Friedrich, M., M. Friedrich, R., Jull, T., Kromer, B., Miyake, F., Panyushkina, I. P., & Reining, F. (2017, Aug). Towards a new radiocarbon calibration curve based on annually resolved data.. IntCal and Dendrochronology Workshop, 14th Int. AMS Conf. Ottawa, Canada.
• Detizio, M. L., Zawiskie, J. M., Panyushkina, I. P., & Leavitt, S. W. (2016, March). New AMS radiocarbon bone and tusk dates for Late Pleistocene mastodons in southeast Michigan. Michigan Academy of Science Arts & Letters Conference, 4 March 2016. Saginaw Valley State University.
• Detizio, M. L., Zawiskie, J. M., Panyushkina, I. P., & Leavitt, S. W. (2016, March). New AMS radiocarbon bone and tusk dates for Late Pleistocene mastodons in southeast Michigan. Michigan Academy of Science Arts & Letters Conference. Saginaw Valley State University.
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  Although roughly 300 mastodons have been discovered in Michigan there are relatively few published high precision AMS radiocarbon bone and tusk dates. Here we report results of six new AMS bone and tusk collagen dates from the collections of Cranbrook Institute of Science. These were derived from two new mastodon specimens and four other individuals previously dated by bracketing the fossils relative to dates on associated wood or peat and/or directly dated with older radiometric and sample preparation methods. Geographically the specimens range from Hillsdale to Lapeer County in the southeast Michigan interlobate belt. The mastodons range in age from 12,200 +/- 40 BP (14,165-14,010 Cal BP) to 10,600 +/- 40 BP (12,670 – 12,530 Cal BP). For one individual (Rappuhn Mastodon) a new tusk collagen date of 11,980 +/- 40 BP was as much as 2,730 radiocarbon years older than a previous tusk date 9,250 +/- 350 BP and 1,230 radiocarbon years older than a date on associated wood 10,750 +/- 400 BP. This and other examples illustrate the need to reevaluate the relative and direct dating of mastodons and other megafauna to provide an accurate chronology for Late Quaternary extinctions and highlights the crucial importance of natural history collections.
• Jull, A. J., Miyake, F., Panyushkina, I. P., Lange, T. E., Basin, C., Salter, M., & Masada, K. (2016, October). Search for cosmic-ray variations in the past from 14C and other radionuclides. Conference on the Application of Accelerators to Research and Industry. Fort Worth, Tx: CAARI/Sandia Labs/Univ of North Texas.
• Leavitt, S. W., & Panyushkina, I. P. (2016, April). The stable-isotopic view of tree-ring series from the Great Lakes area between ca. 12 ka and 13.8 ka. Geological Society of America, North-Central Section - 50th Annual Meeting, 18 to 19 April 2016. Champaign, IL.
• Leavitt, S. W., & Panyushkina, I. P. (2016, April). The stable-isotopic view of tree-ring series from the Great Lakes area between ca. 12 ka and 13.8 ka. Geological Society of America, North-Central Section - 50th Annual Meeting. Champaign, IL: Geological Society of America.
• Miyake, F., Masuda, K., Nakamura, T., Jull, T. A., Panyushkina, I. P., & Waker, L. (2016, June). Large 14C excursion in the 55th century BC. 26th Goldschmidt Conference on Geochemistry. Yokahama, Japan.
• Panyushkina, I. P., Leavitt, S. W., & Zawiskie, J. (2016, April). Annually-resolved environmental proxies in the Great Lakes Area, 14 ka to 10 ka BP: A time of rising human population and mega-fauna extinction. Society for American Archaeology (SAA) 81st Annual Meeting, 6-10 April 2016. Orlando, Florida.
• Panyushkina, I. P., Leavitt, S. W., & Zawiskie, J. M. (2016, April). Annually-Resolved Environmental proxies in the Great Lakes Area, 14 ka to 10 ka BP: A Time of Rising Human Population and Mega-Fauna Extinction. Society for American Archaeology (SAA) 81st Annual Meeting. Orlando, Florida: Society for American Archaeology.
• Panyushkina, I. P., Leavitt, S. W., & Zawiskie, J. M. (2016, April). Annually-resolved environmental proxies in the Great Lakes Region, 14 ka to 10 ka BP: A time of Paleo-Indian hunters and megafauna extinction. 81st Annual Meeting of Society for American Archaeology. Orlando, FL.
• Panyushkina, I. P., Livina, V. N., & Leavitt, S. W. (2016, April). Climate variability of Late Pleistocene deglaciation in the North American midcontinent derived from tree rings. European Geosciences Union (EGU) General Assembly 2016, 17–22 April 2016. Vienna, Austria.
• Leavitt, S. W., & Panyushkina, I. P. (2015, August). Tree-ring evidence of non-stationary environment in the U.S. Great Lakes area between 15ka-7ka: A time of human transcontinental migrations and mega-fauna extinctions. INQUA Congress. Nagoya, Japan.
• Miyake, F., Masuda, K., Hakozaki, M., Nakamura, T., Kimura, K., Jull, T. A., Lange, T., Cruz, R., Panyushkina, I. P., Baisan, C., & Salzer, M. (2015, November). Search for annual carbon-14 excursions in the past. 22nd Int. Conf. on Radiocarbon. Dakar, Senegal.
• Panyushkina, I. P., & Leavitt, S. W. (2015, April). Climatic signals in tree-ring stable isotope records from the U.S. Great Lakes subfossil wood network: Successes and limitations. EGU General Assembly. Veina, Austria.
• Panyushkina, I. P., Leavitt, S. W., Lara, A., Roig, F., Palmer, J., Turney, C. S., Jull, A. J., & Van de Water, P. (2015, August). Pan-Pacific tree-ring records in excess of 50 ka.. INQUA Congress. Nagoya, Japan.
• Jull, T. A., Panyushkina, I. P., Lange, T. E., Chang, C., Myglan, V., Kukarskih, V. V., Burr, G. S., Leavitt, S. W., & Swetnam, T. W. (2014, January). Evaluating the possible size of excursions in the 14C record due to cosmic events. 9th Int. Conference on Dendrochronology. Melbourne, Australia.
• Jull, T. A., Panyushkina, I. P., Lange, T., Kukarskih, V. V., Myglan, V., Clark, K. J., Salzer, M. W., George, S., Burr, G. S., & Leavitt, S. W. (2014, June). Excursions in the 14C record at AD 774-775 and extraterrestrial effects on atmospheric 14C production. Workshop on Extreme Space Weather Events. Bolder, CO.
• Leavitt, S. W., & Panyushkina, I. P. (2014, December). Tree-ring proxies of hydroclimate variability in the Great Lakes region during cold excursions back to 15ka.. AGU Fall Meeting. San Francisco, CA.
• Leavitt, S. W., & Panyushkina, I. P. (2014, January). Radiocarbon age control of tree-ring chronologies from a network of ancient wood sites in the U.S. Great Lakes area. 9th Int. Conf. on Dendrochronology. Melbourne, Australia.
• Lynch, A. M., O'Connor, C. D., Mukhamediev, N., Ashikbaev, N., Panyushkina, I. P., & Sagitov, A. O. (2014, March). The historical role of Ips hauseri in the spruce forests of the Tien Shan Mountains, Kazakhstan. Western Forest Insect Work Conference. Sacramento, CA.
• Mukhamediev, M. M., Lynch, A. M., O'Connor, C. D., Ashikbaev, N., Sagitov, A. O., & Panyushkina, I. P. (2014, April). The historical role of Ips hauseri (Coleoptera: Curculionidae) in the spruce forest of Ile-Alatausky and Medeo National Parks. Int. Conf. on Sustainability of Agro-Ecosystems. Almaty, Kazakhstan.
• Panyushkina, I. P., Macklin, M. G., Toonen, W. J., & Chang, C. (2014, January). Climate, Rivers and the First Farmers of Semirechye in Central Asia.. 9th Int. Conference on Dendrochronology. Melbourne, Australia.
• Panyushkina, I. P., Macklin, M. G., Toonen, W. J., & Chang, C. (2014, June). Dendroarchaeology of Semirechye: interdisciplinary approach to assess the interaction of Saka population and landscape in the first millennia BC. RussDendro-2014 Conference. Bishkek, Kyrgyzstan.
• Panyushkina, I. P., & Leavitt, S. W. (2013, October). Abrupt changes in moisture variability in the Great Lakes region at ca. 13.7ka, 12ka, 11.5ka and 8.2ka: a new perspective from subfossil tree rings.. Paleoamerican Odyssey Conference. Santa Fe, NM.
• Panyushkina, I. P., Macklin, M. G., Toonen, W. H., & Chang, C. (2013, August). The geoarchaeology of the Talgar River alluvial fan and Iron Age history in the Semirech’ye region of Kazakhstan.. 8th IAG Int. Conf. on Geomorphology. Paris, France.
• Leavitt, S. W., Panyushkina, I. P., Zawiskie, J., & Wiedenhoeft, A. (2012, July). Wood from the Shelton Mastodon Site (Michigan): Radiocarbon and Tree-Ring Dating. 21 Int. Radiocarbon Congress. Paris, France.
• Panyushkina, I. P. (2012, April). Climate change and demography of Bronze-Iron age agropastoralists in Central Asia. SSA Meeting. Memphis, TN.
• Panyushkina, I. P., Goryachev, A., Grigoriev, F., Maryashev, A., & Chang, C. (2012, July). An expanded set of calendar ages for Bronze-Iron Age transition in Central Asia drawn from archaeological tree rings with radiocarbon. 21 Int. Radiocarbon Congress. Paris, France.
• Panyushkina, I. P., & Leavitt, S. W. (2011, June). Dieback patterns of ancient spruce in the Great Lakes region between ca. 14,000 and 10,000 cal yr BP. IAGLR 54th Annual Conf.. Deluth, MI.
• Panyushkina, I. P., Leavitt, S. W., Knox, J., Hunter, D., & Wiedenhoeft, A. (2011, July). LGM to Holocene transition in the Great Lakes Area: Environmental inferences from floating tree-ring chronologies. XVIII INQUA Congress. Bern, Switzerland.
• Panyushkina, I. P., Shishov, V., & Kalugin, I. (2011, March). Evaluation of temperature signal in combined records of tree-ring widths and laminated lake sediments from the Russian Alta. PAGES-Varve Second Workshop. Corpus Christi, TX.
• Knorre, A., Kirdyanov, A., Saurer, M., Siegwolf, R. T., Bryukhanova, M., Grachev, A., Chebykin, E., Goldberg, E. L., Panyushkina, I. P., Vaganov, E. A., & Leavitt, S. W. (2010, November). Investigating tree-ring isotopes and trace elements in larch to determine links with climate in Southern Siberia. 90th American Meteorological Society Annual Meeting. Atlanta, GA.
• Leavitt, S. W., & Panyushkina, I. P. (2010, December). Tree rings and environmental change during deglaciation in the N. American Great Lakes area. AGU Fall Meeting. San Francisco, CA.
• Van de Water, P., Leavitt, S. W., Panyushkina, I. P., Jull, T. A., Tesla, N. R., & Squire, J. (2010, December). Tree Trunks from MIS3 Revealed in Pacific Northwest Landslide Deposits. AGU Fall Meeting. San Francisco, CA.
• Leavitt, S. W., & Panyushkina, I. P. (2009, June). Ancient wood in the Great Lakes region: a significant paleoenvironment and paleoecology resource.. GSA. Rockford, WI.
• Kirdyanov, A., Silkin, P. P., Knorre, A., Shishov, V., Panyushkina, I. P., & Vaganov, E. A. (2007, September). Multi-parameter approach in dendroecology: Advantages and prospects. International conference on New Methods of Dendroecology. Irkutsk, Russia.
• Panyushkina, I. P. (2006, June). Tree-ring growth in Russian Altai and climate change.. Int. Conf. on Climate Changes and Their Impact on Boreal and Temperate Forests. Yekaterinburg, Russia.
• Panyushkina, I. P., & Leavitt, S. W. (2006, June). Late Glacial-Early Holocene climate variability in the Great Lakes region from tree rings. 19th AMQUA Biennial Meeting.
• Panyushkina, I. P., & Sljusarenko, I. (2006, April). Dendrochronology of the Iron Age in the Russian Altai: controversy between radiocarbon, archaeological and tree ring dates. 19th Int. Radiocarbon Conf.. Oxford, United Kindom.
• Panyushkina, I. P., & Sljusarenko, I. (2006, June). Larch dendrochronology derived from archaeological sites in Central Asia back to 800 B.C. 7th Int. Conf. on Dendrochronoogy. Beijing, China.
• Panyushkina, I. P. (2004, June). Toward a dendrochronology to better understand Central Asian Archeology.. 85th Annual Meeting for American Association for Advancement of Science, Pacific Division. Logan, UT.
• Panyushkina, I. P., & Leavitt, S. W. (2004, June). High-resolution records of the Pleistocene-Holocene transition from tree rings in central North America. American Quaternary Association Biennial Meeting. Lawrence, Kansas.
• Leavitt, S. W., & Panyushkina, I. P. (2003, September). Tree-ring records of near-Younger Dryas time in the U.S. Upper Midwes. 18th Int. Radiocarbon Conf.. Wellington, New Zealand.
• Panyushkina, I. P., & Leavitt, S. W. (2003, July). Tree-ring investigation of the Younger Dryas in the US Upper Midwest. XVI INQUA Congress. Reno, NV.
• Sljusarenko, I., Panyushkina, I. P., Bikov, N., Orlova, L., & Kuzmin, Y. (2003, November). Chronology of the Scythian period sites in the Southeastern Altai: Dendrochronological and radiocarbon analysis. Int. Conf. on Impact of the Environment on Human Migration in Eurasia. St. Petersburg.
• Ovtchinnikov, D. V., Panyushkina, I. P., & Adamenko, M. (2002, Aug). A millennial tree-ring chronology as an indicator of early summer temperature in central Asia (Altai, Russia). 6th Int. Conf. on Dendrochronology: Dendrochronology, Environmental Change and Human History. Quebec City, Canada.
• Panyushkina, I. P., & Sljusarenko, I. (2002, Aug). Climatic interference from a floating tree-ring chronology of Pazyryk culture from the Altai Mountain. 6th Int. Conf. on Dendrochronology, Environmental Change and Human History. Quebec City, Canada.
• Panyushkina, I. P., Hughes, M. H., Vaganov, E. A., & Munro, M. A. (2001, September). Temperature regime of warm seasons in Siberian Arctic since 1642 AD reconstructed from cell dimension of larch tree rings. Tree Rings and People. Int. Conf. on Future of Dendrochronology. Davos, Switzerland.
• Vlasenko, V. I., & Panyushkina, I. P. (1999, June). Stability of forest ecosystems in the Stolby Reserve, South Siberia. IUFRO Workshop on Assessment Methods of Forest Ecosystem Status and Sustainability. Krasnoyarsk, Russia.
• Panyushkina, I. P., & Ovtchinnikov, D. (1998, June). The reaction of larch radial growth to climate change in the Altai Mountains. IUFRO Intradivision Symposium Larix 98: World Resources for Breeding, Resistance and Utilization. Krasnoyarsk, Russia.
• Kirdyanov, A., Shashkin, A. V., Panyushkina, I. P., & Arbatskaya, M. (1997, June). Tree ring growth, climate and fire frequency variability in forest ecosystems of the Yenisei Transect. Int. Workshop on Spatial Temporal Dimensions of High Latitude Ecosystem Change: Siberian IGBP Transect).. Krasnoyarsk, Russia.
• Panyushkina, I. P. (1997, March). Larch growth and climate change in the Siberian Arctic.. Conf. of Krasnoyarsk Science Center, Russian Academy of Sciences. Krasnoyarsk, Russia.
• Panyushkina, I. P. (1997, September). Spatial classification of larch growth in the north of Central Siberia. Conf. on Methods of Geographical Research. Irkutsk, Russia.
• Panyushkina, I. P. (1996, May). Spatial-temporal patterns of larch tree-ring variability in the northern Central Siberia. Int. Conf. on Ecological Physiological Aspects of Wood Formation in Conifer Plants.. Krasnoyarsk, Russia.
• Vaganov, E. A., Panyushkina, I. P., & Shishov, V. (1995, March). Dendroclimatic study of boreal forest in the northern part of the Central Siberia. Int. Symposium on Asian and Pacific Dendrochronology. Tsucuba, Japan.

Poster Presentations

• Panyushkina, I. P., Meko, D. M., Thaxton, R., Shiklomanov, A. I., Prusevich, A., Glidden, S., & Lammers, R. (2023, May).

   Assessment of arctic warming impact on Siberian hydrology using online tool TRISH: Tree-Ring Integrated System for Hydrology.

  . TRACE Annual Meeting, May 8-13, Coimbra, Portugal.. Portugal.
• Panyushkina, I. P., Thaxton, R., & Meko, D. (2022, Jun). Modeling Seasonality of River Discharge in Pan-Arctic Watersheds with Ring Width and Tracheid Anatomical Parameters. Conference on Frontiers in Hydrology. Puerto Rico: AGU.
• Jull, T., Panyushkina, I. P., & Miyake, F. (2020, April). Evidence for solar-flare and other cosmic-ray events in the 14C record of tree rings: New information and a cautionary tale.. EGU General Assembly 2020. Vienna.
• Jull, T., Miyake, F., Panyushkina, I. P., Pearson, C., Baisan, C., & Heaton, T. (2019, April). Annual carbon-14 variability in tree-rings: Causes and Implications for the calibration curve.. EGU General Assembly 2019. Vienna, AU.
• Jull, T., Miyake, F., Panyushkina, I. P., & Masuda, K. (2018, April). The expanding record of rapid carbon-14 excursions in tree-rings - what do they tell us?. EGU General Assembly 2018. Vienna, AU.
• Meko, D. M., Agafonov, L., Edwards, J., & Panyushkina, I. P. (2018, Dec). Flood history from tree rings in the Ob River Basin. AGU Fall Meeting. Washington DC.
• Panyushkina, I. P., Meko, D., Macklin, M., Toonen, W., Mukhamadiev, N., & Konovalov, V. (2018, July). Tree-ring proxy for runoff variations in the Lake Balkhash Basin.. Int. conference on Practical Geography and XXI Century Challenges,. Moscow, RU.
• Jull, T., Miyake, F., Panyushkina, I. P., Masuda, K., Nakamura, T., Kimura, K., Hakozaki, M., & Wacker, L. (2017, April). Progress in the search for rapid carbon-14 excursions in the tree-ring record. Abstract #EGU2017-2684. EGU General Assembly. Vienna, AU.
• Usmanova, E., & Panyushkina, I. P. (2017, Aug). New burial site of Golden Horde combat in Central Kazakhstan: diverse landscape of conflicts at the Bulanty.. 23rd Annual Meeting of European Association of Archaeologists. Maastricht, Netherlands.
• Detizio, M. L., Zawiskie, J. M., Panyushkina, I. P., & Leavitt, S. W. (2016, April). New AMS radiocarbon bone and tusk dates for Late Pleistocene mastodons in southeast Michigan.. Michigan Academy of Science, Arts and Letters, Annual Meeting. Alma, MI.
• Leavitt, S. W., & Panyushkina, I. P. (2016, April). The stable-isotopic view of tree-ring series from the Great Lakes area between ca. 12ka and 13.8 ka. 50th Annual Meeting of the Geological Society of America: North­ Central Section. Champaign-Urbana, IL.
• Panyushkina, I. P., Livina, V. N., & Leavitt, S. W. (2016, April). Climate variability of Late Pleistocene deglaciation in the North American midcontinent derived from tree rings. European Geosciences Union (EGU) General Assembly. Vienna, Austria: EGU.
• Panyushkina, I. P., Livina, V., Leavitt, S. W., & Mode, W. (2016, April). Climate variability of Late Pleistocene deglaciation in the North American midcontinent derived from tree rings. EGU General Assembly Meeting. Vienna, Austria.
• Engovatova, A. V., Macklin, M. G., & Panyushkina, I. P. (2015, August). Medieval environmental change and the Viking diaspora in the Upper Volga River and their influence on the formation of the early Rus state. INQUA Congress. Nagoya, Japan.
• Meko, D., Panyushkina, I. P., & Agafonov, L. I. (2015, April). Upper air teleconnections to Ob River flows and tree rings. EGU General Assembly. Veinna, Austria.
• Panyushkina, I. P., Macklin, M. G., Toonen, W. J., Chang, C., Seitkaliyev, M., & Voyakin, D. (2015, April). Tapping the Late Pleistocene-Holocene environmental change and the alluvial geoarchaeology in Central Asia. EGU General Assembly Meeting. Vienna, Austria.
• Mukhamadiev, M. M., Lynch, A. M., O'Connor, C. D., Ashikbaev, N., Sagitov, A. O., & Panyushkina, I. P. (2014, June). Dendroecology and history of forest disturbances in the Ile-Alatausky National Park. RussDendro-2014 Conference. Bishkek, Kyrgyzstan.
• Panyushkina, I. P., Grachev, A. M., Shishov, V., Leavitt, S. W., Vaganov, E. A., Chebykin, E. P., Kirdyanov, A., & Hughes, M. K. (2014, January). Tree-ring evidence of wood property changes caused by modern acidification of Arctic soils. 9th Int. Conf. on Dendrochronology. Melbourne, Australia.
• Panyushkina, I. P., & Leavitt, S. W. (2013, May). Tree-ring perspectives on short-term climate variability during the transition during Late Pleistocene to Holocene from the Great Lakes Network of buried timbers. AmeriDendro-2013. Tucson, AZ.
• Jull, T. A., Panyushkina, I. P., Van de Water, P., Leavitt, S. W., Squire, J., Tesla, N., Wie, A. J., Armstrong, A. L., Diaz-Gomes, C. I., & Leonard, A. G. (2012, July). High-resolution terrestrial MIS3 environment from trees recovered from landslide deposits in Oregon. 21 Int. Radiocarbon Congress. Paris, France.
• Mukhamadiev, N. M., Lynch, A. M., O'Connor, C. D., Sagitov, A. O., & Panyushkina, I. P. (2012, December). Response of native and exotic bark beetles to high-energy wind event in the Tian Shan Mountains, Kazakhstan. AGU Fall Meeting. San Francisco, CA.
• Panyushkina, I. P., Leavitt, S. W., Schmierer, J. M., & Wiedenhoeft, A. (2012, July). Mystery of Ancient Buried Wood in the Arnheim “Swamp”, Upper Peninsula Michigan, USA. 21 Int. Radiocarbon Congress. Paris, France.
• Grachev, A., Shishov, V., Leavitt, S. W., Chebykin, E., Darikova, J., Zhuchenko, N., Knorre, A., Vaganov, E. A., Panyushkina, I. P., Kirdyanov, A., & Hughes, M. H. (2011, July). Developing tree-ring chronologies of microelement concentrations in northern Eurasia. 2nd Int. Asian Dendrochronological Conference: Climate change, Opportunities and Challenges. Xi'an, China.
• Panyushkina, I. P. (2011, March). Climate and Siberian Scythians: Tree-ring evidence of summer temperature variability linked to nomadic resources. AGU Chapman Conf. on Climates, Past Landscapes and Civilizations. Santa Fe, NM.
• Panyushkina, I. P., & Chang, C. (2011, July). Impacts of cooling climate on prehistoric herding and farming strategies during the Bronze-Iron Age transition on the margins of the Eurasian steppe. XVIII INQUA Congress. Bern, Switzerland.
• Panyushkina, I. P., Van de Water, P. K., Leavitt, S. W., Jull, T. A., Squire, J., Tesla, N. R., & Wiedenhoeft, A. (2011, July). High-resolution terrestrial MIS3 environment from trees encapsulated in landslide deposits of Oregon. XVIII INQUA Congress. Bern, Switzerland.
• Panyushkina, I. P., Knorre, A., Leavitt, S. W., Kirdyanov, A., Grachev, A., Bryukhanova, M., & Vaganov, E. A. (2010, December). Isotope variability in larch tree rings of Siberia: climate and ecology. AGU Fall Meeting. San Francisco, CA.
• Mode, W., Edwards, C. J., Gertz, H. M., Hooyer, T. S., Panyushkina, I. P., Leavitt, S. W., Williams, J. W., Santiago, A., & Gill, J. (2009, June). Paleoenvironmental record from a Late Glacial to Early Holocene beaver pond in east-central Wisconsin. GSA. Rockford, WI.
• Panyushkina, I. P., Leavitt, S. W., Lange, T., & Schneider, A. F. (2005, December). Tree-Ring Investigation of an in situ Younger Dryas-Age Spruce Forest in the Great Lakes Region of N. America. AGU Fall Meeting. San Francisco, CA.
• Panyushkina, I. P., Sljusarenko, I., Ovtchinnikov, D., & Bikov, N. (2004, June). Challenge in developing a long-term record of summer temperature from tree rings of variable sources and unknown locations in a mountain area. Tree Rings and Climate: Sharpening the Focus. Tucson, AZ.
• Panyushkina, I. P., Sljusarenko, I., Kubarev, V., Molodin, V., & Polosmak, N. (2003, July). Environmental reconstruction from tree rings of archeological timbers in the Altai Mountains, Russia. XVI INQUA Congress. Reno, NV.
• Leavitt, S. W., Panyushkina, I. P., Noggle, S., & Wiedenhoeft, A. (2002, October). A tree-ring study of wood of possible Younger Dryas age from central Illinois. Geological Society of America Annual Meeting. Denver, CO.
• Panyushkina, I. P., & Vaganov, E. A. (2002, March). Regional applicability of a 1,000-year summer temperature reconstruction from Southern Siberia. 98th Annual AAG Meeting. Los Angeles, CA.
• Panyushkina, I. P., Leavitt, S. W., & Noggle, S. (2002, Aug). A tree-ring study of wood of possible Younger Dryas age from central Illinois. 6th Int. Conf. on Dendrochronology, Environmental Change and Human History. Quebec City, Canada.
• Panyushkina, I. P., & Naurzbaev, M. (2001, Pacific Grove, CA). Siberian tree-rings related to climate and pacific teleconnections. 18th Annual Pacific Climate Workshop.
• Panyushkina, I. P., Adamenko, M., & Ovtchinnikov, D. (2000, January). Larch tree-ring variability on the climatic upper tree-line and climate change in the South Siberia.. Conf. on Dendrochronology for the Third Millennium. Mendoza, Argentina.
• Panyushkina, I. P., Adamneko, M. F., Ovtchinnikov, D., & Kiryankov, P. (2000, December). The Medieval Warm Period and Little Ice Age Climate Impact on Glacier and Forest in the Altai Mountains, South Siberia. AGU Fall Meeting. San Francisco, CA.
• Panyushkina, I. P., Hughes, M. M., Vaganov, E. A., & Munro, M. A. (2000, September). Cell dimensions- a possible source of age-independent proxy data from larch tree rings.. Workshop on Plant Response to Environmental Changes on Global and Regional Scales. Irkutsk, Russia.
• Panyushkina, I. P., Hughes, M., Vaganov, E. A., & Munro, M. A. (2000, May). Cell dimensions: a possible source of age-independent proxy data from larch tree rings.. 17th Annual Pacific Climate Workshop. Two Harbors, CA.
• Panyushkina, I. P. (1999, May). The global climate change and larch growth in Central Siberia. PAGES Open Science Meeting. London, UK.

Others

• Panyushkina, I. P. (2020, March). Evidence for solar-flare and other cosmic-ray events in the 14C record in tree rings: New information and a cautionary tale.. https://doi.org/10.5194/egusphere-egu2020-5377
• Luczaj, J. A., Leavitt, S. W., Csank, A., Panyushkina, I. P., & Wright, W. (2018, December). Comment on “Non-Mineralized Fossil Wood” by George E. Mustoe (Geosciences, 2018). Geosciences. https://www.mdpi.com/2076-3263/8/12/462/htm
• Panyushkina, I. P. (2013, March). Climate-Induced Changes in Population Dynamics of Siberian Scythians (700-250 B.C.). Climates, Landscapes, and Civilizations.
• Panyushkina, I. P., Leavitt, S. W., & Grissino-Mayer, G. D. (2012, August). Dendrochronology. McGraw-Hill Encyclopedia of Science and Technology, Vol.1-20. 11th Edition, McGraw-Hill, Inc. Press.