Theresa M Crimmins
- Associate Professor, Phenology - Natural Resources and Environment
- Associate Research Scientist, School of Natural Resources and the Environment
- Member of the Graduate Faculty
Contact
- (520) 621-8523
- Biological Sciences East, Rm. 325
- Tucson, AZ 85721
- theresam@arizona.edu
Degrees
- Ph.D. Natural Resources
- University of Arizona, Tucson, Arizona
- M.A. Geography
- Western Michigan University, Kalamazoo, Michigan, United States
- B.S. Biology
- Western Michigan University, Kalamazoo, Michigan, United States
Awards
- Science and Society Section Team Award
- American Geophysical Union, Fall 2023
- Fellow
- Linnean Society, Fall 2021
- Enduring Achievement
- Advancing Research Impact in Society, Spring 2021
- Tucson Public Voices Fellowship
- Women’s Foundation of Southern Arizona, Fall 2019
- Outstanding Scholarly Achievement
- School of Natural Resources and the Environment, University of Arizona, Spring 2019
- Shoemaker Award for Communication Product Excellence
- USGS, Winter 2018
- Alumni Achievement Award
- Department of Geography, Western Michigan University, Fall 2018
- Globally-Engaged Pillar Award
- College of Arts and Sciences, Western Michigan University, Fall 2018
- Climate Adaptation Leadership Award for Natural Resources
- Association of Fish and Wildlife Agencies., Summer 2018
- Blue Pencil & Gold Screen Award of Excellence
- National Association of Government Communicators, Spring 2018
- Outstanding Achievement Award
- Renewable Natural Resource Foundation, Summer 2017
- Environmental Achievement Award in Climate Champion category.
- US Geological Survey, Spring 2016
- Greening the Department of Interior, Honorable Mention.
- US Department of Interior, Spring 2016
- Healthy Workplace Award
- American Psychological Association, Winter 2015
- USGS Shoemaker Awards for Communication Product Excellence, Internet Product category
- US Geological Survey, Spring 2015
Interests
No activities entered.
Courses
2024-25 Courses
-
Directed Research
RNR 392 (Fall 2024)
2023-24 Courses
-
Directed Research
ECOL 492 (Spring 2024) -
Directed Research
RNR 392 (Spring 2024) -
Directed Research
RNR 492 (Spring 2024) -
Sustainable Earth
RNR 150C1 (Spring 2024) -
Directed Research
RNR 492 (Fall 2023) -
Renewable Nat Resources
RNR 696A (Fall 2023) -
Senior Capstone
ECOL 498 (Fall 2023)
2022-23 Courses
-
Directed Research
RNR 492 (Spring 2023) -
Directed Research
RNR 492 (Fall 2022)
2021-22 Courses
-
Directed Research
RNR 392 (Spring 2022) -
Directed Research
RNR 392 (Fall 2021)
Scholarly Contributions
Chapters
- Crimmins, T. M., Barnett, L., Denny, E. G., Rosemartin, A. H., Weltzin, J. F., & Schaffer, S. (2020). From tiny acorns grow mighty oaks: what we’ve learned from nurturing Nature’s Notebook.. In Handbook of Citizen Science in Ecology and Conservation. University of California Press.
- Posthumus, E. E., Barnett, L., Crimmins, T. M., Warren, P. L., Stancioff, E., & Einerson, J. (2018). Building local resilience to climate change through citizen science, environmental education, and decision-making. In Addressing Climate Change at the Community Level in the United States. New York: Routledge/Taylor & Francis.
- Andrianandrasana, H. T., Becker, D., Berardi, A., Bodmer, R., Chandler, M., Cousins, J. A., Crimmins, T. M., Danielsen, F., Giorgi, A. P., Huxham, M., Leslie, A., Mistry, J., Mora, B., Nelson, M., Poulsen, M. K., Pratihast, A. K., See, L. M., Theilade, I., Constantino, P., , Vakil, T., et al. (2017). The value and opportunities of community- and citizen-based approaches to tropical forest biodiversity monitoring. In A Sourcebook of Methods and Procedures for Monitoring Essential Biodiversity Variables in Tropical Forests with Remote Sensing. The Netherlands: GOFC-GOLD Land Cover Project Office, Wageningen University.
- Chandler, M., See, L., Andrianandrasana, H., Becker, D., Berardi, A., Bodmer, R., Brofelt, S., de Araujo Lima Constantino, P., Cousins, J., Crimmins, T. M., Daniensen, F., Giogi, A. P., Huxman, M., Leslie, A., Liddell, M., Mistry, J., Mora, B., Nelson, M., Poulson, M. K., , Theilade, I., et al. (2017). The value and opportunities of community- and citizen-based approaches to tropical forest biodiversity monitoring.. In Source Book on Tropical Forest Biodiversity Monitoring with Remote Sensing. Global Observation of Forest and Land Cover Dynamics Office and Group on Earth Observations-Biodiversity Observation Network..
- Schwartz, M. D., Beaubien, E., Crimmins, T. M., & Welztin, J. F. (2013). North America.. In Phenology: An Integrative Environmental Science.(pp 67-89). Dordrecht: Kluwer Academic Publishers.
Journals/Publications
- Rosemartin, A. H., Morelli, T. L., Posthumus, E. E., Gerst, K. L., Crimmins, T. M., & Ramirez, A. (2020). Knowledge co-production for climate ecologists: testing a framework to guide new co-producers. Conservation Science and Practice.
- Battle, K., Duhon, A., Vispo, C., Crimmins, T. M., Rosenstiel, T. N., & de Rivera, C. (2022). Two centuries of phenological change: An analysis of newly uncovered citizen science network data across New York State.. Journal of Ecology.
- Crimmins, T. M., & Posthumus, E. E. (2020). Do carefully-timed email messages result in more precise reports of seasonal events?. Citizen Science Theory and Practice..
- Crimmins, T. M., & Posthumus, E. E. (2022). Do carefully-timed email messages increase accuracy and precision in citizen scientists’ reports of events?. Citizen Science Theory and Practice.
- Bates, A., Primack, R. B., Biggar, B. S., & Crimmins, T. M. (2021). Global COVID-19 lockdown highlights humans as both threats and custodians of the environment.. Biological Conservation, 263, 109175. doi:doi.org/10.1016/j.biocon.2021.109175
- Crimmins, T. M. (2020). Dark days are leading to something greener.. Thrive Global.
- Crimmins, T. M. (2020). You can take the person out of the natural area…. Springer Nature Sustainable Community.
- Crimmins, T. M. (2021). Reading the leaves to track environmental hazards and health. Eos, 102. doi:doi.org/10.1029/2021EO157181
- Crimmins, T. M. (2021). The USA National Phenology Network: Big idea, productivity and potential – and now, at big risk.. Bulletin of the Ecological Society of America, 102, e01802. doi:doi.org/10.1002/bes2.1802
- Crimmins, T. M. (2021). USA National Phenology Network 2020 Annual Report. USA-NPN Programmatic Series.
- Crimmins, T. M., Posthumus, E. E., Schaffer, S. N., & Prudic, K. L. (2021). COVID-19 impacts on participation in large scale community science projects in the United States.. Biological Conservation, 256, 109017. doi:doi.org/10.1016/j.biocon.2021.109017
- Gerst, K. L., Crimmins, T. M., Posthumus, E. E., Rosemartin, A. H., Marsh, R., Switzer, J., & Wallace, C. (2021). The USA National Phenology Network’s Buffelgrass Green-up Forecast map products.. Ecological Solutions and Evidence, e12109, 1-6. doi:doi.org/10.1002/2688-8319.12109
- Morisette, J., Duffy, K., Weltzin, J., Browning, D., Marsh, R., Friesz, A., Zachmann, L., Landau, V., Gerst, K. L., Crimmins, T. M., Jones, K., Chang, T., Miller, B., Maiersperger, T., & Richardson, A. (2021). The Pheno-Synthesis Software Suite for integration and analysis of multi-scale, multi-platform phenological data.. Ecological Informatics, 65, 101400. doi:doi.org/10.1016/j.ecoinf.2021.101400
- Posthumus, E. E., Crimmins, T. M., & Weltzin, J. F. (2020). Tracking seasonal changes to support science, natural resource management, and society. USA-NPN Info Sheet.
- Asrar, G., Zhou, Y., Crimmins, T. M., & Sapkota, A. (2020). Eyes in the sky improve pollen tracking. Eos. doi:doi.org/10.1029/2020EO147021
- Bradford, J. B., Weltzin, J. F., Baron, J., Bowen, Z., Bristol, S., Carlisle, D., Crimmins, T. M., Cross, P., DeVivo, J., Dietze, M., Focazio, M., Freeman, M., Gaddis, K., Goldberg, J., Hooten, M., Hsu, L., Jenni, K., Keisman, J., Kennen, J., , Lee, K., et al. (2020). Ecological Forecasting: 21st century science for 21st century management.. USGS Open File Report. doi:doi.org/10.3133/ofr20201073
- Crimmins, T. M. (2020). Citizen science programs offer great options for families affected by recent school closures. Arizona Daily Star.
- Crimmins, T. M. (2020). Dark days are leading to something greener. Thrive Global.
- Crimmins, T. M. (2020). Dear white people: Don’t withdraw from tough conversations on race.. Arizona Daily Star.
- Crimmins, T. M. (2020). Nature shows us missed anniversaries aren’t the end of the world. Thrive Global.
- Crimmins, T. M. (2020). Reconnect with seasonal cycles to ease climate change anxiety. Scientific American.
- Crimmins, T. M. (2020). Spring is arriving earlier across the U.S., and that’s not always good news. The Conversation.
- Crimmins, T. M. (2020). Venturing into my yard is now as necessary as eating and breathing. Thrive Global.
- Crimmins, T. M. (2020). What do allergies, blueberries and the Masters Tournament have in common? Early spring. The Hill.
- Crimmins, T. M., & Barnett, L. (2020). Tracking phenology – the timing of seasonal events – cultivates a sense of belonging.. Environmental Education, 123, 25-26.
- Crimmins, T. M., & Crimmins, M. A. (2020). Spring 2020 started with a bang; how did it wind up?. Nature Ecology & Evolution Community.
- Crimmins, T. M., Gerst, K. L., Huerta, D., Posthumus, E. E., Marsh, R., Rosemartin, A. H., Switzer, J., Weltzin, J. F., Coop, L., Dietschler, N., Herms, D., Limbu, S., Trotter, R. T., & Whitmore, M. (2020). Short-term Forecasts of Pest Insect Activity Inform Management Activities. Annals of the Entomological Society of America, 113(2), 139-148. doi:doi.org/10.1093/aesa/saz026
- Crimmins, T. M., Gerst, K. L., Huerta, D., Posthumus, E. E., Marsh, R., Rosemartin, A. H., Switzer, J., Weltzin, J. F., Coop, L., Dietschler, N., Herms, D., Limbu, S., Trotter, R. T., & Whitmore, M. (2020). Short-term Forecasts of Pest Insect Activity Inform Management Activities. Annals of the Entomological Society of America.
- Gerst, K. L., Crimmins, T. M., Rosemartin, A. H., Posthumus, E. E., & Schwartz, M. D. (2020). An evaluation of how Spring index models predict observed phenological activity. International Journal of Biometeorology, 64, 889-901. doi:doi.org/10.1007/s00484-020-01879-z
- Posthumus, E. E., Miller, M. P., & Crimmins, T. M. (2020). Nature’s Notebook—A tool for recording the timing of seasonal activity of plants and animals.. U.S. Geological Survey Fact Sheet, 2020-3022. doi:doi.org/10.3133/fs20203022
- Weltzin, J. F., Betancourt, J. L., Cook, B. I., Crimmins, T. M., Enquist, C. A., Gerst, M. D., Gross, J. E., Henebry, G. M., Hufft, R. A., Kenney, M. A., Kimball, J. S., Reed, B. C., & Running, S. W. (2020). Seasonality of biological and physical systems as indicators of climate variation and change. Climatic Change, 163, 1755-1771. doi:doi.org/10.1007/s10584-020-02894-0
- Crimmins, M. A., & Crimmins, T. M. (2019). Biologically‐Relevant Trends in Springtime Temperatures Across the United States. Geophysical Research Letters, 46(21). doi:https://doi.org/10.1029/2019GL085251
- Crimmins, M. A., & Crimmins, T. M. (2019). Does an early spring indicate an early summer? Relationships between intraseasonal growing degree day threshold. Journal of Geophysical Research: Biogeosciences, 124(8). doi:https://doi.org/10.1029/2019JG005297
- Crimmins, T. M. (2019). Hanging out with plants can do us all a world of good. Arizona Daily Star.
- Crimmins, T. M. (2019). Real tree or fake? Reducing your holiday carbon footprint. Arizona Daily Star.
- Crimmins, T. M. (2019). USA National Phenology Network 2018 Annual Report. USA-NPN Programmatic Series.
- Crimmins, T. M., Gerst, K. L., Marsh, R., Posthumus, E. E., Rosemartin, A. H., & Switzer, J. (2019). The USA National Phenology Network Expands Daily Pest Forecasts to Twelve Insect Pests.. City Trees.
- Elmendorf, S. C., Gerst, K. L., Crimmins, T. M., & Weltzin, J. F. (2019). Time to branch out? Application of survival models in plant phenology. Agriculture and Forest Meterology, 279, 107694. doi:doi.org/10.1016/j.agrformet.2019.107694
- Prudic, K. L., Wilson, J. K., Toshack, M. C., Gerst, K. L., Rosemartin, A., Crimmins, T. M., & Oliver, J. C. (2019). Creating the Urban Farmer's Almanac with Citizen Science Data. INSECTS, 10(9).
- Browning, D., Crimmins, T. M., James, D., Spiegal, S., Levi, M., Anderson, J. P., & Peters, D. C. (2018). Synchronous species responses reveal phenological guilds – Implications for management.. Ecosphere, 9(9), e02395. doi:https://doi.org/10.1002/ecs2.2395
- Crimmins, T. M. (2018). Growing degree day (GDD) maps pinpoint management windows for tree pests. City Trees. doi:http://read.dmtmag.com/i/925395-january-february-2018
- Crimmins, T. M. (2018). The USA National Phenology Network’s growing degree day maps and online visualization tool support management decisions.. Journal of Extension, 56(3), 3TOT4.
- Crimmins, T. M. (2018). USA-NPN Daily Pest Forecasts Guide Timing of Pest Control Activities. The Forestry Source, 23(8).
- Crimmins, T. M., Marsh, R., Gerst, K. L., Posthumus, E. E., Rosemartin, A. H., & Switzer, J. (2018). USA-NPN Daily Pest Forecasts Guide Timing of Treatment for Insect Pests.. City Trees.
- Crimmins, T. M., Walker, E. K., Walker, J. J., Posthumus, E. E., & Weltzin, J. F. (2018). Differential changes in the onset of spring across US National Wildlife Refuges and North American migratory bird flyways. PLOS ONE, 13(9), e0202495. doi:doi.org/10.1371/journal.pone.0202495
- Rosemartin, A. H., Langseth, M. L., Crimmins, T. M., & Weltzin, J. F. (2018). Development and release of phenological data products--A case study in compliance with federal open data policy. U.S. Geological Survey Open-File Report, 2018-1007. doi:https://doi.org/10.3133/ofr20181007
- Crimmins, T. M., & Crimmins, M. A. (2017). Plant Phenology Site Phenometrics + Accumulated Growing Degree Day Calculations for the continental United States (2009-2016). U.S. Geological Survey data release. doi:https://doi.org/10.5066/F7XG9Q0X
- Crimmins, T. M., Crimmins, M. A., Gerst, K. L., Rosemartin, A. H., & Weltzin, J. F. (2017). USA National Phenology Network’s volunteer-contributed observations yield predictive models of phenological transitions. PloS one, 12(8), e0182919.
- Crimmins, T. M., Marsh, R., Switzer, J., Crimmins, M. A., Gerst, K. L., Rosemartin, A. H., & Weltzin, J. F. (2017). USA National Phenology Network Gridded Products Documentation. USGS Open File Report.
- Ellwood, E., Crimmins, T. M., & Miller-Rushing, A. J. (2017). Citizen science and conservation: Recommendations for a rapidly moving field. Biological Conservation, 208, 1-4. doi:http://dx.doi.org/10.1016/j.biocon.2016.10.014
- Langseth, M. L., Hsu, L., Amberg, J., Bliss, N., Bock, A. R., Bolus, R. T., Bristol, R. S., Chase, K. J., Crimmins, T. M., Earle, P. S., Erickson, R., Everette, A. L., Falgout, J., Faundeen, J. L., Fienen, M., Griffin, R., Guy, M. R., Henry, K. D., Hoebelheinrich, N. J., , Hunt, R., et al. (2017). Community for Data Integration 2016 annual report. U.S. Geological Survey Open-File Report, 2017–1053. doi:10.3133/ofr20171053.ISSN 2331-1258
- Rosemartin, A. H., Denny, E. G., Gerst, K. L., Marsh, R., Crimmins, T. M., & Weltzin, J. F. (2018). USA National Phenology Network Observational Data Documentation. U.S. Geological Survey Open-File Report. doi:https://doi.org/10.3133/ofr20181060
- Crimmins, T. M. (2016). USA National Phenology Network 2015 Annual Report. USA-NPN Programmatic Series.
- Crimmins, T. M., Rosemartin, A. H., & Weltzin, J. F. (2016). Review Implementation Plan. USA-NPN Programmatic Series.
- Ellwood, E., Crimmins, T. M., & Miller-Rushing, A. J. (2016). Citizen science and conservation: Recommendations for a rapidly moving field. Biological Conservation. doi:http://dx.doi.org/10.1016/j.biocon.2016.10.014
- Gerst, K. L., & Crimmins, T. M. (2016). USA National Phenology Network Phenology Model Workshop Report.. USA-NPN Programmatic Series.
- Fuccillo, K. K., Crimmins, T. M., DeRivera, C., & Elder, T. S. (2014). Assessing accuracy in citizen science-based plant phenology monitoring.. International Journal of Biometeorology.
- Wright, K. W., Vanderbilt, K. L., Inouye, D. W., Bertelsen, C. D., & Crimmins, T. M. (2013). Turnover and reliability of flower communities across two deserts and two mountains: A pollinator’s perspective.. Journal of Arid Environments, 115, 27-34.
- Wright, K. W., Vanderbilt, K. L., Inouye, D. W., Bertelsen, C. D., & Crimmins, T. M. (2015). Turnover and reliability of flower communities in extreme environments: Insights from long-term phenology data sets. JOURNAL OF ARID ENVIRONMENTS, 115, 27-34.
- Crimmins, T. M. (2014). USA National Phenology Network 2013 Annual Report. USA-NPN Programmatic Series.More infoUSA-NPN National Coordinating Office. 2014. USA National Phenology Network 2013 Annual Report. USA-NPN Programmatic Series 2013-001. www.usanpn.org. Primary author.
- Crimmins, T. M., & Hartel, D. (2014). Timing is Everything: Phenology as a Tool for City Foresters.. City Trees.
- Crimmins, T. M., & Schwartz, M. D. (2014). Scientists love lilacs almost as much as you do.. Lilacs.
- Crimmins, T. M., Bertelsen, C. D., & Crimmins, M. A. (2014). Within-season flowering interruptions are common in the water-limited Sky Islands. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY, 58(4), 419-426.More infoWithin-season breaks in flowering have been reported in a wide range of highly variable ecosystems including deserts, tropical forests and high-elevation meadows. A tendency for interruptions in flowering has also been documented in southwestern US "Sky Island" plant communities, which encompass xeric to mesic conditions. Seasonal breaks in flowering have implications for plant reproductive success, population structure, and gene flow as well as resource availability for pollinators and dependent animals. Most reports of multiple within-season flowering events describe only two distinct flowering episodes. In this study, we set out to better quantify distinct within-season flowering events in highly variable Sky Islands plant communities. Across a > 1,200 m elevation gradient, we documented a strong tendency for multiple within-season flowering events. In both distinct spring and summer seasons, we observed greater than two distinct within-season flowering in more than 10 % of instances. Patterns were clearly mediated by the different climate factors at work in the two seasons. The spring season, which is influenced by both temperature and precipitation, showed a mixed response, with the greatest tendency for multiple flowering events occurring at mid-elevations and functional types varying in their responses across the gradient. In the summer season, during which flowering across the gradient is limited by localized precipitation, annual plants exhibited the fewest within-season flowering events and herbaceous perennial plants showed the greatest. Additionally, more distinct events occurred at lower elevations. The patterns documented here provide a baseline for comparison of system responses to changing climate conditions.
- Crimmins, T. M., Weltzin, J. F., Rosemartin, A. H., Surina, E. M., Marsh, L., & Denny, E. (2014). Targeted campaign increases activity among participants in Nature's Notebook, a citizen science project.. Natural Sciences Education, 43, 64-72.More infoCrimmins, T.M., J.F. Weltzin, A.H. Rosemartin, E.M. Surina, L. Marsh, and E.G. Denny.
- Denny, E., Denny, E., Gerst, K. L., Gerst, K. L., Miller-Rushing, A. J., Miller-Rushing, A. J., Tierney, G. L., Tierney, G. L., Crimmins, T. M., Crimmins, T. M., Enquist, C. A., Enquist, C. A., Guertin, P., Guertin, P., Rosemartin, A. H., Rosemartin, A. H., Schwartz, M. D., Schwartz, M. D., Thomas, K. A., , Thomas, K. A., et al. (2014). Standardized phenology monitoring methods to track plant and animal activity for science and resource management applications.. International Journal of Biometeorology, 58, 591-601.
- Denny, E., Gerst, K. L., Miller-Rushing, A. J., Tierney, G. L., Crimmins, T. M., Enquist, C. A., Guertin, P., Rosemartin, A. H., Schwartz, M. D., Thomas, K. A., & Weltzin, J. F. (2014). Standardized phenology monitoring methods to track plant and animal activity for science and resource management applications.. International Journal of Biometeorology, 58, 591-601.
- Crimmins, T. M. (2013). Nature’s Notebook and Extension: Engaging citizen-scientists and 4-H youth to observe a changing environment.. Journal of Extension, 51(1), 1IAW1.
- Crimmins, T. M., Bertelsen, C. D., & Crimmins, M. A. (2013). Spring and summer patterns in flowering onset, duration, and constancy across a water-limited gradient.. American Journal of Botany, 100, 1-11.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2013). Within-season flowering interruptions are common in the water-limited Sky Islands.. International Journal of Biometeorology.
- Davies, T. J., Wolkovich, E. M., J., N., Salamin, N., Allen, J. M., Ault, T. R., Betancourt, J. L., Bolmgren, K., Cleland, E. E., Cook, B. I., Crimmins, T. M., Mazer, S. J., Mccabe, G. J., Pau, S., Regetz, J., Schwartz, M. D., & Travers, S. E. (2013). Phylogenetic conservatism in plant phenology. Journal of Ecology, 101(6), 1520-1530.More infoAbstract: Phenological events - defined points in the life cycle of a plant or animal - have been regarded as highly plastic traits, reflecting flexible responses to various environmental cues. The ability of a species to track, via shifts in phenological events, the abiotic environment through time might dictate its vulnerability to future climate change. Understanding the predictors and drivers of phenological change is therefore critical. Here, we evaluated evidence for phylogenetic conservatism - the tendency for closely related species to share similar ecological and biological attributes - in phenological traits across flowering plants. We aggregated published and unpublished data on timing of first flower and first leaf, encompassing ̃4000 species at 23 sites across the Northern Hemisphere. We reconstructed the phylogeny for the set of included species, first, using the software program Phylomatic, and second, from DNA data. We then quantified phylogenetic conservatism in plant phenology within and across sites. We show that more closely related species tend to flower and leaf at similar times. By contrasting mean flowering times within and across sites, however, we illustrate that it is not the time of year that is conserved, but rather the phenological responses to a common set of abiotic cues. Our findings suggest that species cannot be treated as statistically independent when modelling phenological responses. Synthesis. Closely related species tend to resemble each other in the timing of their life-history events, a likely product of evolutionarily conserved responses to environmental cues. The search for the underlying drivers of phenology must therefore account for species' shared evolutionary histories. Closely related species tend to resemble each other in the timing of their life-history events, a likely product of evolutionarily conserved responses to environmental cues. The search for the underlying drivers of phenology must therefore account for species' shared evolutionary histories. © 2013 British Ecological Society.
- Davies, T. J., Wolkovich, E. M., Kraft, N. J., Salamin, N., Allen, J. M., Ault, T. R., Betancourt, J. L., Bolmgren, K., Cleland, E. E., Mazer, S. J., Crimmins, T. M., McCabe, G. J., Pau, S., Regetz, J., Schwartz, M. D., & Travers, S. (2013). Phylogenetic conservatism in plant phenology.. Journal of Ecology, 101, 1520-1530.
- Kellermann, J. L., Crimmins, T. M., Denny, E., Enquist, C. A., Rosemartin, A. H., Gerst, K. L., & Weltzin, J. F. (2013). Nature's Notebook: 2012 State of the Data.. USA National Phenology Network Technical Series.
- Posthumus, E. E., Barnett, L., Crimmins, T. M., Kish, G. R., Sheftall, W., Stancioff, E., & Warren, P. (2013). Nature's notebook and extension: Engaging citizen-scientists and 4-h youth to observe a changing environment. Journal of Extension, 51(1).More infoAbstract: Extension, with its access to long-term volunteers, has the unique ability to teach citizen scientists about the connection between climate variability and the resulting effects on plants, animals, and thus, humans. The USA National Phenology Network's Nature's Notebook on line program provides a science learning tool for Extension's Master Gardener, Master Naturalist, and Master Water Steward training programs, engaging volunteers to contribute to a scientifically rigorous data resource. We give examples of how Extension programs in Arizona, Florida, and Maine are currently incorporating Nature's Notebook, and encourage use of the program in other Extension locations. © by Extension Journal, Inc. ISSN 1077-5315.
- Rosemartin, A. H., Crimmins, T. M., Enquist, C. A., Gerst, K. L., Kellermann, J. L., Posthumus, E. E., Denny, E., Guertin, P., Marsh, L., & Weltzin, J. F. (2013). Organizing phenological data resources to inform natural resource conservation.. Biological Conservation.
- Cleland, E. E., Allen, J. M., Crimmins, T. M., Dunne, J. A., Pau, S., Travers, S. E., Zavaleta, E. S., & Wolkovich, E. M. (2012). Phenological tracking enables positive species responses to climate change. ECOLOGY, 93(8), 1765-1771.More infoEarlier spring phenology observed in many plant species in recent decades provides compelling evidence that species are already responding to the rising global temperatures associated with anthropogenic climate change. There is great variability among species, however, in their phenological sensitivity to temperature. Species that do not phenologically "track" climate change may be at a disadvantage if their growth becomes limited by missed interactions with mutualists, or a shorter growing season relative to earlier-active competitors. Here, we set out to test the hypothesis that phenological sensitivity could be used to predict species performance in a warming climate, by synthesizing results across terrestrial warming experiments. We assembled data for 57 species across 24 studies where flowering or vegetative phenology was matched with a measure of species performance. Performance metrics included biomass, percent cover, number of flowers, or individual growth. We found that species that advanced their phenology with warming also increased their performance, whereas those that did not advance tended to decline in performance with warming. This indicates that species that cannot phenologically "track" climate may be at increased risk with future climate change, and it suggests that phenological monitoring may provide an important tool for setting future conservation priorities.
- Cleland, E. E., Allen, J. M., Crimmins, T. M., Dunne, J. A., Pau, S., Travers, S. E., Zavaleta, E. S., & Wolkovich, E. M. (2012). Phenological tracking enables positive species responses to climate change. Ecology, 93(8), 1765-1771.More infoPMID: 22928404;Abstract: Earlier spring phenology observed in many plant species in recent decades provides compelling evidence that species are already responding to the rising global temperatures associated with anthropogenic climate change. There is great variability among species, however, in their phenological sensitivity to temperature. Species that do not phenologically "track" climate change may be at a disadvantage if their growth becomes limited by missed interactions with mutualists, or a shorter growing season relative to earlieractive competitors. Here, we set out to test the hypothesis that phenological sensitivity could be used to predict species performance in a warming climate, by synthesizing results across terrestrial warming experiments. We assembled data for 57 species across 24 studies where flowering or vegetative phenology was matched with a measure of species performance. Performance metrics included biomass, percent cover, number of flowers, or individual growth. We found that species that advanced their phenology with warming also increased their performance, whereas those that did not advance tended to decline in performance with warming. This indicates that species that cannot phenologically "track" climate may be at increased risk with future climate change, and it suggests that phenological monitoring may provide an important tool for setting future conservation priorities. © 2012 by the Ecological Society of America.
- Cleland, E., Allen, J., Crimmins, T., Pau, S., Travers, S., & Wolkovich, E. (2012). Phenological tracking enables positive species responses to climate change. Ecology, 93, 1765-1771.
- Cook, B. I., Wolkovich, E. M., Davies, T., Ault, T. R., Betancourt, J. L., Allen, J. M., Bolmgren, K., Cleland, E. E., Crimmins, T. M., Kraft, N. J., Lancaster, L. T., Mazer, S. J., McCabe, G. J., McGill, B. J., Parmesan, C., Pau, S., Regetz, J., Salamin, N., Schwartz, M. D., & Travers, S. E. (2012). Sensitivity of Spring Phenology to Warming Across Temporal and Spatial Climate Gradients in Two Independent Databases. Ecosystems, 15(8), 1283-1294.More infoAbstract: Disparate ecological datasets are often organized into databases post hoc and then analyzed and interpreted in ways that may diverge from the purposes of the original data collections. Few studies, however, have attempted to quantify how biases inherent in these data (for example, species richness, replication, climate) affect their suitability for addressing broad scientific questions, especially in under-represented systems (for example, deserts, tropical forests) and wild communities. Here, we quantitatively compare the sensitivity of species first flowering and leafing dates to spring warmth in two phenological databases from the Northern Hemisphere. One-PEP725-has high replication within and across sites, but has low species diversity and spans a limited climate gradient. The other-NECTAR-includes many more species and a wider range of climates, but has fewer sites and low replication of species across sites. PEP725, despite low species diversity and relatively low seasonality, accurately captures the magnitude and seasonality of warming responses at climatically similar NECTAR sites, with most species showing earlier phenological events in response to warming. In NECTAR, the prevalence of temperature responders significantly declines with increasing mean annual temperature, a pattern that cannot be detected across the limited climate gradient spanned by the PEP725 flowering and leafing data. Our results showcase broad areas of agreement between the two databases, despite significant differences in species richness and geographic coverage, while also noting areas where including data across broader climate gradients may provide added value. Such comparisons help to identify gaps in our observations and knowledge base that can be addressed by ongoing monitoring and research efforts. Resolving these issues will be critical for improving predictions in understudied and under-sampled systems outside of the temperature seasonal mid-latitudes. © 2012 Springer Science+Business Media, LLC (outside the USA).
- Cook, B., Wolkovich, E., Davies, T., Ault, T., Betancourt, J., Allen, J., Bolmgren, K., Cleland, E., Crimmins, T., Kraft, N., Lancaster, L., Mazer, S., McCabe, G., McGill, B., Parmesan, C., Pau, S., Regetz, J., Salamin, N., Schwartz, M., & Travers, S. (2012). Sensitivity of spring phenology to warming across temporal and spatial climate gradients in two independent databases. Ecosystems.More infoe4-5 DOI: 10.1007/s10021-012-9584-5
- Crimmins, M. A., & Crimmins, T. M. (2012). Monitoring plant phenology using digital repeat photography. ENVIRONMENTAL MANAGEMENT, 41(6), 949-958.More infoRepeated observations of plant phenology have been shown to be important indicators of global change. However, capturing the exact date of key events requires daily observations during the growing season, making phenologic observations relatively labor intensive and costly to collect. One alternative to daily observations for capturing the dates of key phenologic events is repeat photography. In this study, we explored the utility of repeat digital photography for monitoring phenologic events in plants. We provide an illustration of this approach and its utility by placing observations made using repeat digital imagery in context with local meteorologic and edaphic variables. We found that repeat photography provides a reliable, consistent measurement of phenophase. In addition, digital photography offers advantages in that it can be mathematically manipulated to detect and enhance patterns; it can classify objects; and digital photographs can be archived for future analysis. In this study, an estimate of greenness and counts of individual flowers were extracted by way of mathematic algorithms from the photo time series. These metrics were interpreted using meteorologic measurements collected at the study site. We conclude that repeat photography, coupled with site-specific meteorologic measurements, could greatly enhance our understanding environmental triggers of phenologic events. In addition, the methods described could easily be adopted by citizen scientists and the general public as well as professionals in the field.
- Crimmins, T. M., & Crimmins, M. A. (2012). Appreciating and Archiving Present-Day Naturalists' Contributions to Science. BioScience, 62(6), 531-532.
- Crimmins, T. M., Crimmins, M. A., Bertelsen, D., & Balmat, J. (2012). Relationships between alpha diversity of plant species in bloom and climatic variables across an elevation gradient. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY, 52(5), 353-366.More infoThis study analyzes a 20-year record of flowering observations collected near Tucson, Arizona, USA. In contrast to traditional phenological records, this dataset is a record of all species observed in bloom collected in five segments of approximately 1 mile (1.61 km) in length across a 4,158-ft (1,200-m) elevation gradient. The data showed differing seasonal and interannual patterns, demonstrating the influence of climatic factors and elevation on flowering. Miles at higher elevations showed bloom peaks in summer, consistent with temperate and montane communities. Conversely, lower miles demonstrated two distinct flowering seasons, typical of the surrounding Sonoran Desert. Interannual fluctuations in total species observed in bloom were not consistent across the 5 miles (c. 8 km), suggesting that these communities respond to different flowering cues. Consistent with documented flowering triggers in semi-arid systems, the alpha diversity of species in bloom at lower elevations in this study was strongly influenced by precipitation. Upper elevation bloom numbers were heavily influenced by temperature, correspondent with bloom triggers in temperate and montane systems. In general, different life forms exhibited similar bloom triggers within the study miles, believed to be a function of shallow soils. Multivariate community analyses showed that anomalous climate conditions yielded unique seasonal bloom compositions. Over the course of the study, average summer temperature showed an upward trend; the number of species in bloom in summer (July-October) in the highest mile (1,940-2,210 m) demonstrated a concurrent increasing trend. Community analysis suggested a gradual shift in the composition of species in bloom in this mile over the study period.
- Crimmins, T., & Crimmins, M. (2012). Appreciating and archiving present-day naturalists contributions to science. BioScience, 62, 531-532.
- Deiz, J., , I., Miller-Rushing, A., Mazer, S., Crimmins, T., Crimmins, M., Bertelsen, C., & Inouye, D. (2012). Forecasting phenology: from species variability to community patterns. Ecology Letters, 15, 545-553.
- Diez, J. M., Ibanez, I., Miller-Rushing, A. J., Mazer, S. J., Crimmins, T. M., Crimmins, M. A., Bertelsen, C. D., & Inouye, D. W. (2012). Forecasting phenology: from species variability to community patterns. ECOLOGY LETTERS, 15(6), 545-553.More infoEcology Letters (2012) Abstract Shifts in species phenology in response to climate change have wide-ranging consequences for ecological systems. However, significant variability in species responses, together with limited data, frustrates efforts to forecast the consequences of ongoing phenological changes. Herein, we use a case study of three North American plant communities to explore the implications of variability across levels of organisation (within and among species, and among communities) for forecasting responses to climate change. We show how despite significant variation among species in sensitivities to climate, comparable patterns emerge at the community level once regional climate drivers are accounted for. However, communities differ with respect to projected patterns of divergence and overlap among their species phenological distributions in response to climate change. These analyses and a review of hypotheses suggest how explicit consideration of spatial scale and levels of biological organisation may help to understand and forecast phenological responses to climate change.
- Diez, J., Ibanez, I., Miller-Rushing, A., Mazer, S., Crimmins, T. M., Crimmins, M. A., Bertelsen, C. D., & Inouye, D. (2012). Forecasting phenology: from species variability to community patterns. Ecology Letters.
- Wolkovich, E. M., Cook, B. I., Allen, J. M., Crimmins, T. M., Betancourt, J. L., Travers, S. E., Pau, S., Regetz, J., Davies, T. J., Kraft, N. J., Ault, T. R., Bolmgren, K., Mazer, S. J., McCabe, G. J., McGill, B. J., Parmesan, C., Salamin, N., Schwartz, M. D., & Cleland, E. E. (2012). Warming experiments underpredict plant phenological responses to climate change. Nature, 485(7399), 494-497.More infoPMID: 22622576;Abstract: Warming experiments are increasingly relied on to estimate plant responses to global climate change. For experiments to provide meaningful predictions of future responses, they should reflect the empirical record of responses to temperature variability and recent warming, including advances in the timing of flowering and leafing. We compared phenology (the timing of recurring life history events) in observational studies and warming experiments spanning four continents and 1,634 plant species using a common measure of temperature sensitivity (change in days per degree Celsius). We show that warming experiments underpredict advances in the timing of flowering and leafing by 8.5-fold and 4.0-fold, respectively, compared with long-term observations. For species that were common to both study types, the experimental results did not match the observational data in sign or magnitude. The observational data also showed that species that flower earliest in the spring have the highest temperature sensitivities, but this trend was not reflected in the experimental data. These significant mismatches seem to be unrelated to the study length or to the degree of manipulated warming in experiments. The discrepancy between experiments and observations, however, could arise from complex interactions among multiple drivers in the observational data, or it could arise from remediable artefacts in the experiments that result in lower irradiance and drier soils, thus dampening the phenological responses to manipulated warming. Our results introduce uncertainty into ecosystem models that are informed solely by experiments and suggest that responses to climate change that are predicted using such models should be re-evaluated. © 2012 Macmillan Publishers Limited. All rights reserved.
- Wolkovich, E., Cook, B., Allen, J., Crimmins, T., Travers, S., Pau, S., Regetz, J., Davies, T., Betancourt, J., Kraft, N., Ault, T., Bolmgren, K., Mazer, S., McCabe, G., McGill, B., Parmesan, C., Salamin, N., Schwartz, M., & Cleland, E. (2012). Warming experiments underpredict plant phenological responses to climate change.. Nature, 485, 494-497.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2011). Onset of summer flowering in a 'Sky Island' is driven by monsoon moisture. NEW PHYTOLOGIST, 191(2), 468-479.More infoTemperatures for the southwestern USA are predicted to increase in coming decades, especially during the summer season; however, little is known about how summer precipitation patterns may change. We aimed to better understand how nonsucculent plants of a water-limited gradient encompassing xeric desert to mesic mountain-top may respond to changes in summer conditions.
- Crimmins, T., Crimmins, M., & Bertelsen, C. (2011). Onset of summer flowering in a Sky Island is driven by monsoon moisture. New Phytologist, 191, 468-479.
- Cook, B. I., Wolkovich, E. M., Davies, T. J., Ault, T. R., Betancourt, J. L., Allen, J. M., Bolmgren, K., Cleland, E. E., Crimmins, T. M., Kraft, N. J., Lancaster, L. T., Mazer, S. J., McCabe, G. J., McGill, B. J., Parmesan, C., Pau, S., Regetz, J., Salamin, N., Schwartz, M. D., & Travers, S. E. (2010). Sensitivity of Spring Phenology to Warming Across Temporal and Spatial Climate Gradients in Two Independent Databases. ECOSYSTEMS, 15(8), 1283-1294.More infoDisparate ecological datasets are often organized into databases post hoc and then analyzed and interpreted in ways that may diverge from the purposes of the original data collections. Few studies, however, have attempted to quantify how biases inherent in these data (for example, species richness, replication, climate) affect their suitability for addressing broad scientific questions, especially in under-represented systems (for example, deserts, tropical forests) and wild communities. Here, we quantitatively compare the sensitivity of species first flowering and leafing dates to spring warmth in two phenological databases from the Northern Hemisphere. One-PEP725-has high replication within and across sites, but has low species diversity and spans a limited climate gradient. The other-NECTAR-includes many more species and a wider range of climates, but has fewer sites and low replication of species across sites. PEP725, despite low species diversity and relatively low seasonality, accurately captures the magnitude and seasonality of warming responses at climatically similar NECTAR sites, with most species showing earlier phenological events in response to warming. In NECTAR, the prevalence of temperature responders significantly declines with increasing mean annual temperature, a pattern that cannot be detected across the limited climate gradient spanned by the PEP725 flowering and leafing data. Our results showcase broad areas of agreement between the two databases, despite significant differences in species richness and geographic coverage, while also noting areas where including data across broader climate gradients may provide added value. Such comparisons help to identify gaps in our observations and knowledge base that can be addressed by ongoing monitoring and research efforts. Resolving these issues will be critical for improving predictions in understudied and under-sampled systems outside of the temperature seasonal mid-latitudes.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2010). Complex responses to climate drivers in onset of spring flowering across a semi-arid elevation gradient. Journal of Ecology, 5(98), 1042-1051.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2009). Complex responses to climate drivers in onset of spring flowering across a semi-arid elevation gradient. JOURNAL OF ECOLOGY, 98(5), 1042-1051.More infoP>1. Many studies have documented advancement in spring plant phenology; however, studies in dry climates, where water, rather than temperature, is the limiting factor, are rare. To better understand how plants of a water-limited environment may respond to predicted changes in climate, we used a species-rich 20-year data set collected in a semi-arid ecosystem to determine species' relationships with precipitation and temperature for seasons coincident with and previous to flowering. Our data were collected across a 1200-m elevation gradient, allowing us to explore the consistency in relationships with climatic variables from desert scrub to pine forest. A second objective was to document evidence of changes in the onset of spring flowering over this 20-year period.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2009). Flowering range changes across an elevation gradient in response to warming summer temperatures. Global Change Biology, 5(15), 1141-1152.
- Crimmins, T. M., & McPherson, G. R. (2008). Vegetation and seedbank response to Eragrostis lehmanniana removal in semi-desert communities. Weed Research, 48(6), 542-551.More infoAbstract: Eragrostis lehmanniana (Lehmann lovegrass) is an invasive perennial bunchgrass in semi-desert grasslands in the USA. We removed E. lehmanniana using glyphosate at three locations in south-eastern Arizona in 2003 and 2004 to evaluate the community response. We also sampled the seedbank five times during the course of the experiment to characterise viable seeds at the sites. Two of the sites with histories of livestock grazing responded similarly to the continued removal of E. lehmanniana, with significant increases in native cover and species richness, mainly attributable to herbaceous annual species. Over the course of the study, progressively fewer E. lehmanniana seeds and higher numbers of native annual herb seeds were germinated from seedbank samples of treated plots. At the third site, characterised by a history of intense agricultural use and drier conditions than the other sites, there was a large decrease in E. lehmanniana cover in all plots, followed by an increase in aggressive non-native species as well as native grasses. The seedbank at this site suggested potential for restoration, with native perennial grass species present in increasing quantities. The results of this study have implications for site restoration, should a means of permanently removing E. lehmanniana be found. © 2008 The Authors.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2008). Flowering range changes across an elevation gradient in response to warming summer temperatures. GLOBAL CHANGE BIOLOGY, 15(5), 1141-1152.More infoMany studies have demonstrated plant response to warming temperatures, both as advancement in the timing of phenological events and in range shifts. Mountain gradients are ideal laboratories for studying species range changes. In this study of 363 plant species in bloom collected in five segments across a 1200 m (4158 ft) elevation gradient, we look for changes in species flowering ranges over a 20-year period. Ninety-three species (25.6%) exhibited a significant change in the elevation at which they flowered from the first half to the second half of the record, with many of these changes occurring at higher elevations. Most of the species exhibiting the changes were perennial plants. Interestingly, though many changes in flowering range were specific to higher elevations, range changes occurred all across the gradient. The changes reported in this study are concurrent with significant increases in summer temperatures across the region and are consistent with observed changes around the globe.
- Crimmins, T. M., Mauzy, M. S., & Studd, S. E. (2008). Assessing exotic plant distribution, abundance, and impact at Montezuma Castle and Tuzigoot National Monuments in Arizona. Ecological Restoration, 26(1), 44-50.More infoAbstract: Exotic plants are invading federal lands at an estimated rate of 1,862 ha each day, reducing the natural diversity many of these places were set aside to protect. Effective invasive species management must be based on thorough knowledge of these species' locations and distributions, modes and rates of spread, potential and known effects, and control methods. We mapped the location and distribution of 50 exotic plant species in two Arizona national monuments using state-of-the-art GIS and GPS technologies. The Alien Plants Ranking System was used to prioritize species for management and develop an exotic plant management plan for the park units. Other project goals included testing the efficacy of roaming surveys for exotic plant mapping using standards suggested by the North American Weed Management Association and creating a basis for future monitoring of weed populations. Mapping weeds digitally offers many advantages including increased speed and accuracy, enhanced data sharing capabilities, and easy updates, all of which aid in establishing management priorities and providing a baseline for future monitoring efforts. ©2008 by the Board of Regents of the University of Wisconsin System.
- Wolkovich, E. M., Cook, B. I., Allen, J. M., Crimmins, T. M., Betancourt, J. L., Travers, S. E., Pau, S., Regetz, J., Davies, T. J., Kraft, N. J., Ault, T. R., Bolmgren, K., Mazer, S. J., McCabe, G. J., McGill, B. J., Parmesan, C., Salamin, N., Schwartz, M. D., & Cleland, E. E. (2008). Warming experiments underpredict plant phenological responses to climate change. NATURE, 485(7399), 494-497.More infoWarming experiments are increasingly relied on to estimate plant responses to global climate change(1,2). For experiments to provide meaningful predictions of future responses, they should reflect the empirical record of responses to temperature variability and recent warming, including advances in the timing of flowering and leafing(3-5). We compared phenology (the timing of recurring life history events) in observational studies and warming experiments spanning four continents and 1,634 plant species using a common measure of temperature sensitivity (change in days per degree Celsius). We show that warming experiments underpredict advances in the timing of flowering and leafing by 8.5-fold and 4.0-fold, respectively, compared with long-term observations. For species that were common to both study types, the experimental results did not match the observational data in sign or magnitude. The observational data also showed that species that flower earliest in the spring have the highest temperature sensitivities, but this trend was not reflected in the experimental data. These significant mismatches seem to be unrelated to the study length or to the degree of manipulated warming in experiments. The discrepancy between experiments and observations, however, could arise from complex interactions among multiple drivers in the observational data, or it could arise from remediable artefacts in the experiments that result in lower irradiance and drier soils, thus dampening the phenological responses to manipulated warming. Our results introduce uncertainty into ecosystem models that are informed solely by experiments and suggest that responses to climate change that are predicted using such models should be re-evaluated.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2007). Relationships between alpha diversity of plant species in bloom and climatic variables across an elevation gradient. International Journal of Biometeorology, 52(5), 353-366.
Proceedings Publications
- Gerst, K. L., Rosemartin, A. H., Posthumus, E. E., & Crimmins, T. M. (2018, May). Successes and challenges on a spectrum of stakeholder engagement.. In Collaboration Now for the Future: Biodiversity and Management of the Madrean Archipelago VI meeting.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2012, May). Temporal patterns in species flowering in Sky Islands of the Sonoran Desert ecoregion.. In Merging science and management in a rapidly changing world: biodiversity and management of the Madrean Archipelago III., 33-39.
Presentations
- Crimmins, T. M. (2021, May). Phenology in a changing climate: The USA National Phenology Network. Arizona Senior Academy. Online.
- Crimmins, T. M. (2020, Mar 30). Tips and tricks for communicating with purpose. Rangelands Partnership Annual Meeting. Online.
- Crimmins, T. M. (2021, April). The USA National Phenology Network: Supporting science, management, and outreach. Irish Phenology Network Workshop. Online.
- Crimmins, T. M. (2021, Aug). Phenology monitoring infrastructure and data: fundamental resources for science, education, and management. Ecological Society of America Annual Meeting. Online.
- Crimmins, T. M. (2021, January). The USA National Phenology Network: Data, tools, and resources to support science, management, and outreach. 1. Michigan State University Department of Plant Biology Seminar. Online.
- Crimmins, T. M. (2021, July). Lessons learned over fourteen years of supporting science, management, and outreach through phenology monitoring. Lessons from International Phenology Networks Workshop. Online: The African Phenology Network.
- Crimmins, T. M. (2021, March). Seasonal pollen patterns indicated by volunteer-contributed flowering observations. Centers for Disease Control and Prevention, Climate and Health Webinar Series. Online.
- Crimmins, T. M. (2021, May). Updates from the USA National Phenology Network. Managing and Utilizing Precipitation Observations from Volunteer Networks. Online: Community Collaborative Rain, Hail, and Snow Network.
- Crimmins, T. M. (2021, Sep). The USA National Phenology Network: Data, tools, and resources to support science, management, and outreach. University of Arizona Agriculture and Biosystems Engineering 696 Graduate Seminar.
- Crimmins, T. M. (2021, Sept). Phenology monitoring infrastructure and data: fundamental resources supporting human health, natural resource management, and Earth observation applications. International Congress of Biometeorology. Online.
- Crimmins, T. M., & Posthumus, E. E. (2021, May). Do carefully-timed email messages result in more precise reports of seasonal events?. CitSciVirtual 2021 meeting. Online.
- Crimmins, T. M., Wetherbee, G., & Gay, D. (2021, Oct). Phenology monitoring infrastructure and data: fundamental resources supporting scientific discovery, natural resource management, and Earth observations. National Atmospheric Deposition Program Fall Meeting and Scientific Symposium.
- Woods-Placky, B., Crimmins, T. M., Walsh, P., & Dutton, J. (2021, Winter). The Climate-Allergy Link: A Spring 2022 Outlook. Breezometer Webinar. Online: Breezometer.
- Crimmins, T. M. (2020, Dec 8). How are the COVID-19 shut-downs affecting participation in biodiversity-themed community science projects in the U.S.?. UMass-Boston Biology Department Symposium. Online.
- Crimmins, T. M. (2020, May 15). National phenology networks: A big idea with lots of potential. Departmental seminar. Online: Jawaharlal Nehru University, India.
- Crimmins, T. M. (2020, May 28). The times they are a-changing…Phenology and changing springs. NOAA Eastern Region Climate Services Monthly Webinar Series. Online.
- Crimmins, T. M. (2020, May 7). Communicating with a purpose. Arizona Agricultural Extension Agents Annual Meeting. Online: Arizona Agricultural Extension Agents.
- Crimmins, T. M. (2020, Nov 16). Some thoughts for writing OpEds and blog posts. Salpointe High School teachers meeting. Online.
- Crimmins, T. M. (2020, Oct 21). Phenology in Arizona: Local findings and a national program.. Tucson Climate Group, monthly meeting.. Online..
- Crimmins, T. M. (2020, Oct 27). The USA National Phenology Network: Data, tools, and resources to support science, management, and outreach. Utah State University Biology Departmental Seminar. Online.
- Crimmins, T. M. (2020, Sep 16). Some thoughts for writing OpEds and blog posts. Southern Arizona Laudato Si/Rising Again Group monthly meeting. Online.
- Crimmins, T. M., Rosemartin, A. H., Gerst, K., & Posthumus, E. E. (2020, Nov 8-11). Putting Short-term Phenology Forecasts on the Map. ASA-CSSA-SSSA International Annual Meeting. Online.
- Gerst, K. L., Crimmins, T. M., Rosemartin, A. H., & Posthumus, E. E. (2020, Oct 6-8). Invasive insect and plant phenology forecasts inform management and decision-making. North American Invasive Species Management Association Annual Conference. Online.
- Rosemartin, A. H., Barker-Plotkin, A., Brown-Lima, C., Crimmins, T. M., Donnelly, C., Fahey, R., Elkington, J., Jenni, K., Keleher, N., Mickley, J., Morelli, T. L., Parisio, M., Pasquarella, V., Putnam, N., Quirion, B., Rapp, J., Siegert, N., Trotter, R. T., Weed, A., & Wood, S. (2020, Aug 2-7). Knowledge coproduction and decision science to reduce forest pest risk.. Ecological Society of America Annual Meeting. Online.
- Rosemartin, A. H., Crimmins, T. M., Gerst, K. L., & Posthumus, E. E. (2020, 12-16 Jan). Putting short-term phenology forecasts on the map.. 25th Conference on Applied Climatology. Boston, MA: American Meteorological Society.
- Crimmins, T. M., Gerst, K. L., Marsh, R., Posthumus, E. E., Rosemartin, A. H., Switzer, J., & Wallace, C. (2019, November). Time to burn: Phenology products and tools are a piece of the biodiversity puzzle. 8th International Fire Ecology and Management Congress. Tucson, AZ: Association for Fire Ecology.
- Crimmins, T. M., Rosemartin, A. H., Gerst, K. L., Posthumus, E. E., Morelli, T. L., & Wallace, C. (2019, December). A story of co-production involving the USA National Phenology Network and invasive species managers. American Geophysical Union Fall Meeting. San Francisco, CA.
- Gerst, K. L., Crimmins, T. M., Denny, E. G., Marsh, R., Switzer, J., Rosemartin, A. H., & Weltzin, J. F. (2019, July). The USA National Phenology Network: Tools and data to advance science and improve decision-making. Botany 2019. Tucson, AZ.
- Gerst, K. L., Posthumus, E. E., Crimmins, T. M., & Wallace, C. (2019, November). Phenology data and maps to inform invasive species management and restoration. Southwest Society for Ecological Restoration Annual Conference. Tucson, AZ.
- Posthumus, E. E., Gerst, K. L., Crimmins, T. M., & Wallace, C. (2019, October). Timing is everything: Phenology forecasts aid managers in knowing when to treat invasive plants. Southwest Vegetation Management Association Annual Meeting. Flagstaff, AZ.
- Rosemartin, A. H., Gerst, K. L., Crimmins, T. M., Marsh, R., Switzer, J., & Posthumus, E. E. (2019, October). New short-term forecasts of pest life cycle stages. North American Invasive Species Management Association Annual Meeting. Saratoga Springs, NY.
- Crimmins, M. A., & Crimmins, T. M. (2018, December). Does an early spring mean an early summer?. American Geophysical Union Fall Meeting. 10-14 December, Washington, DC.. Washington, DC.: American Geophysical Union.
- Crimmins, T. M. (2018, May). 10 Years of the USA National Phenology Network: Data, tools, scientific discoveries, and decision support.. University of Arizona Laboratory of Tree-Ring Research monthly seminar.. Tucson, AZ.
- Crimmins, T. M. (2018, Oct). Opportunities and updates from the USA National Phenology Network.. 15th annual Research Insights in Semiarid Ecosystems (RISE) Symposium..
- Crimmins, T. M. (2018, Oct). Short-term forecasts of invasive species activity inform management activities.. 21st Annual Southwest Vegetation Management Association Meeting. Tucson, AZ.
- Crimmins, T. M. (2018, Oct). Timing is everything…and…what I’ve been up to for the past 20 years. Western Michigan University Department of Geography Colloquium. Kalamazoo, MI.
- Crimmins, T. M., & Crimmins, M. A. (2018, December). Does an early spring mean an early summer?. American Geophysical Union Fall Meeting. Washington, DC.
- Gerst, K. L., Rosemartin, A. H., Posthumus, E. E., & Crimmins, T. M. (2018, May). Successes and challenges on a spectrum of stakeholder engagement. Collaboration Now for the Future: Biodiversity and Management of the Madrean Archipelago IV.. Tucson, AZ.
- Posthumus, E. E., Crimmins, T. M., & Rosemartin, A. H. (2018, Apr). A bird’s eye view of forecasting phenology across North America.. 136th American Ornithological Society Meeting.. Tucson, AZ.
- Browning, D. M., Spiegal, S., & Crimmins, T. M. (2017, Aug). Landscape or local? Understanding relative roles of macro- and site-level conditions on long-term patterns in phenology for desert grassland plant species. Ecological Society of America Annual Meeting. Portland, Oregon: Ecological Society of America.
- Crimmins, T. M. (2017, Jun). Visualizing Spring: Phenology maps and tools to communicate timing of spring and other plant and animal activity. 45th Conference on Broadcast Meteorology. Kansas City, Missouri: American Meteorological Society.
- Crimmins, T. M., & Gerst, K. L. (2017, Dec). Evaluating gridded Spring Indices using the USA National Phenology Network’s observational phenology data. American Geophysical Union Fall Meeting. New Orleans, Louisiana: American Geophysical Union.
- L, V. K., W, W. K., Inouye, D. W., Bertelsen, C. D., Crimmins, T. M., Gries, C., Servilla, M., O'Brien, M. C., Costa, D., Waide, R., Hanson, P. C., & Smith, C. A. (2017, Aug). Long-term phenology datasets and the Environmental Data Initiative (EDI): Facilitating future data syntheses. Ecological Society of America Annual Meeting. Portland, Oregon: Ecological Society of America.
- Browning, D., Richardson, A., & Crimmins, T. M. (2015, August). Envisioning a successful shared strategy for common methods to monitor phenology within the LTER.. Long Term Ecological Research Network (LTER) All Scientists Meeting. Estes Park, Colorado.
- Crimmins, T. M. (2015, Fall). How can the USA National Phenology Network’s data resources benefit you?. American Geophysical Union Fall Meeting. San Francisco, California.
- Crimmins, T. M. (2015, February). Challenges of scale in a citizen science program. Citizen Science 2015 Conference. San Jose, California.
- Crimmins, T. M. (2015, January). Plant Responses to Variable Climate Conditions in Arizona – What Does It Mean for the Future?. Arizona Society for Range Management Annual Meeting. Tucson, Arizona.
- Crimmins, T. M., Rosemartin, A. H., Barnett, L., & Weltzin, J. F. (2015, February). Who generates better data: group members or individual participants?. Citizen Science Association.. San Jose, California.
- Crimmins, T. M., Rosemartin, A. H., Weltzin, J. F., & Barnett, L. (2015, January). Do members of organized groups submit better data to citizen science projects than individual participants?. 95th American Meteorological Society Annual Meeting. Phoenix, Arizona.
- Rosemartin, A. H., Weltzin, J. F., Crimmins, T. M., & Posthumus, E. E. (2015, Fall). Citizen Scientists Contribute National-Scale Phenology Data for Science, Conservation and Resource Management.. American Geophysical Union Fall Meeting. San Francisco, California.
- Crimmins, T. M. (2014, April). How can tracking tree phenology help you?. Western Chapter of the International Society for Arboriculture. Pasadena, CA: Western Chapter of the International Society for Arboriculture.
- Crimmins, T. M. (2014, July). Our climate is changing…so what? Plant responses in the Finger Rock Canyon.. Native Seeds/SEARCH Salon. Tucson, AZ.
- Crimmins, T. M. (2014, October). Our climate is changing…So what? Plant responses in the Finger Rock Canyon.. Phenology Days Celebration. Tucson, AZ.
- Crimmins, T. M., Crimmins, M. A., & Bertelsen, C. D. (2014, October). Novel climate-driven species composition shifts across an elevation gradient.. 7th Annual Phenology Research and Observations of Southwest Ecosystems (PROSE) Symposium.. Tucson.
- Crimmins, T. M., Weltzin, J. F., & Rosemartin, A. H. (2014, August). Recruiting and retaining an army of observers: Innovative approaches to understanding ecological responses to environmental change.. 99th Annual Meeting of the Ecological Society of America. Sacramento, CA.
- Crimmins, T. M., & Barnett, L. (2013, May). Engage your garden visitors and members outdoors by tracking plants and animals using Nature’s Notebook.. American Public Gardens Association Annual Conference. Phoenix, AZ.
- Crimmins, T. M., & Hartel, D. (2013, November). How tracking tree phenology can help you.. Society for Municipal Arborists. Pittsburgh, PA.
- Crimmins, T. M., & Hartel, D. (2013, November). Observing and reporting urban tree phenology: what’s in it for community forestry partners?. Partners in Community Forestry National Conference. Pittsburgh, PA.
- Crimmins, T. M., Elmore, A. J., Huete, A., Keller, S., Levetin, E., Luvall, J., Myers, O., Stylinski, C. D., Van de Water, P. K., & Vukovic, A. (2013, August). Researcher-driven campaigns engage Nature’s Notebook participants in scientific data collection. 98th Annual Meeting of the Ecological Society of America. Minneapolis, MN.
- Luvall, J. C., Sprigg, W. A., Huete, A., Nickovic, S., Prasad, A., Pejanovic, G. A., Vukovic, A., Van de Water, P. K., Budge, A. M., Hudspeth, W., Krapfl, H., Toth, B., Zelicoff, A. P., Myers, O. B., Bunderson, L., Ponce-Campos, G., Menache, M., Crimmins, T. M., & Vujadinovic, M. (2013, January). Use of MODIS satellite images to evaluate Juniperus spp. pollen phenology to support a pollen dispersal model, PREAM, to support public health allergy alerts. American Meteorological Society Fourth Conference on Environment and Health. Austin, TX.
- Crimmins, T., Crimmins, M., & Bertelsen, C. (2012, August). Stopping to smell the roses: Patterns in flowering duration and constancy across a water-limited elevation gradient. Phenology 2012 Conference. Milwaukee, WI.
- Crimmins, T., Crimmins, M., & Bertelsen, C. (2012, May). Temporal patterns in species flowering can inform long-term plant monitoring. Biodiversity & Management of the Madrean Archipelago III. Tucson, AZ.
- Crimmins, T., Rosemartin, A., & et, a. l. (2012, December). Evaluating engagement models for a citizen science project: Lessons learned from four years of Nature s Notebook. American Geophysical Union Fall Meeting. San Francisco, CA: American Geophysical Union.
- Friedl, M., Melaas, E., Gray, J., Richardson, A., Keefe, J., Bailey, A., Weltzin, J., & Crimmins, T. (2012, August). Understanding the response of ecosystem phenology to climate change: Recent anomalous spring climate and phenology in the northeastern United States. Phenology 2012 Conference. Milwaukee, WI.
- Rosemartin, A., & Crimmins, T. (2012, August). Recruitment, training and retention of observers in Nature s Notebook, a program of the USA National Phenology Network. Phenology 2012 Conference. Milwaukee, WI.
- Barnett, L., Crimmins, T., Denny, E., Enquist, C., Marsh, R., Posthumus, E., Rosemartin, A., & Weltzin, J. (2011, September). Enter a TitleEngage Your Program Participants in Tracking Climate Change Using Nature s Notebook!. 7th Annual Conference of the Alliance of Natural Resource Outreach and Service Programs. Park City, UT.
- Crimmins, T. M. (2011). Wild Ideas podcast. The Wilderness Center. Tucson, AZ: The Wilderness Center.More infoBroadcast
- Crimmins, T. M. (2011, February). Interviewed by Agroinnovations podcast, episode #119. Agroinnovations podcast. Tucson, AZ.More infoInternet/intranet
- Crimmins, T., Crimmins, M., & Bertelsen, C. (2011, October). Changes in spring and summer flowering season duration across an elevation gradient. 5th Annual Phenology Research and Observations of Southwest Ecosystems Symposium. Tucson, AZ: 5th Annual Phenology Research and Observations of Southwest Ecosystems Symposium.
- Crimmins, T., Crimmins, M., Denny, E., Enquist, C., Rosemartin, A., & Weltzin, J. (2011, December). Citizen and Professional Scientists as Partners in the Scientific Endeavor. American Geophysical Union Fall Meeting. San Francisco, CA: American Geophysical Union.
- Crimmins, T., Denny, E., Enquist, C., Marsh, R., Rosemartin, A., & Weltzin, J. (2011, August). Tracking climate change using Nature s Notebook. 96th Ecological Society of America Annual Meeting. Austin, TX: Ecological Society of America.
- Luvall, J., Sprigg, W., Levetin, E., Huete, A., Nickovic, S., Pejanovic, G., A, V., Van, d., Myers, O., Budge, A., Zelicoff, A., L, B., Ponce-Campos, G., & Crimmins, T. (2011, December). Use of MODIS Satellite Images and an Atmospheric Dust Transport Model to Evaluate Juniperus spp. Pollen Phenology and Dispersal. American Geophysical Union Fall Meeting. San Francisco, CA: American Geophysical Union.
- Luvall, J., Sprigg, W., Levetin, E., Huete, A., Slobodan, N., Pejanovic, G., van, d., Myers, O., Budge, A., & Crimmins, T. (2011, April). Use of MODIS satellite images and an atmospheric dust transport model to evaluate Juniperus spp. pollen phenology and dispersal. 34th International Symposium on Remote Sensing of Environment. Sydney, Australia: 34th International Symposium on Remote Sensing of Environment.
- Weltzin, J., Crimmins, T., Denny, E., Enquist, C., Marsh, R., & Rosemartin, A. (2011, August). Nature s Notebook: A USA National Phenology Network program for ecological monitoring and information management. 96th Ecological Society of America Annual Meeting. Austin, TX: Ecological Society of America.
- Wolkovich, E., Cook, B., Allen, J., Crimmins, T., Travers, S., Pau, S., & Cleland, E. (2011, December). Warming Experiments Under-Predict Plant Phenological Responses to Climate Change. American Geophysical Union Fall Meeting. San Francisco, CA: American Geophysical Union.
Poster Presentations
- Crimmins, T. M., Vogt, E., Manangan, A., Lo, F., Katz, D., Dalan, D., Brown, C., & Robinson, G. (2021, Dec). Can phenological forecasts of the start of the spring season inform allergy and asthma symptom management?. American Geophysical Union Fall Meeting. Online.
- Santiago-Bly, J., Crimmins, T. M., Droege, S., Zahra, A., Zhou, X., Bartkowski, H., & Miller, A. (2021, Jan). Doing science amidst a pandemic: a collective story about why many of the eastern North America redbuds, Cercis canadensis Linnaeus (Fabaceae), forgot to fructify during 2020 in Pennsylvania, Maryland, the District of Columbia, and northern Virginia, USA. Science Education for New Civic Engagements and Responsibilities (SENCER) Mid-Atlantic Conference - 2021. Online: National Center for Science & Civic Engagement.
- Rosemartin, A. H., Crimmins, T. M., Gerst, K., Posthumus, E. E., Ramirez, A., Wallace, C., & Morelli, T. L. (2020, Dec 9-13). Lessoned learned in knowledge coproduction: the people make the project. American Geophysical Union Fall Meeting. Online.
- Rosemartin, A. H., Schaffer, S., Mansaray, S., Denny, E. G., Crimmins, T. M., & Barnett, L. (2020, Aug 2-7). The next 10 at the NPN: building an equitable and inclusive network.. Ecological Society of America Annual Meeting. Online.
- Crimmins, T. M. (2019, December). What have we learned from two seasons of forecasting phenology? The USA National Phenology Network’s experience operationalizing Pheno Forecasts. American Geophysical Union Fall Meeting. San Francisco, CA.
- Crimmins, T. M., Gerst, K. L., Marsh, R., Posthumus, E. E., Rosemartin, A. H., Switzer, J., Morelli, T. L., & Weltzin, J. F. (2019, June). Workflows to support integrated predictive science capacity: Forecasting insect pest activity. USGS Community for Data Integration. Boulder, CO.
- Goldsmith, G. R., Collison, M., Crimmins, T. M., Haas, D., Roush, M., & Verbeke, M. (2019, December). Demographics, interests, and motivations of participants in a long-term citizen science project. American Geophysical Union Fall Meeting. San Francisco, CA.
- Crimmins, T. M. (2018, Aug). Short-term forecasts and data summarizations to address science and management needs. Ecological Society of America Annual Meeting.. New Orleans, LA.
- Crimmins, T. M. (2017, Aug). Phenology observations collected by citizen scientists directly support science and natural resource management. Ecological Society of America Annual Meeting. Portland, Oregon: Ecological Society of America.
- Crimmins, M. A., Crimmins, T. M., Marsh, R., Gerst, K. L., Rosemartin, A. H., Switzer, J., Weltzin, J., Crimmins, M. A., Crimmins, T. M., Marsh, R., Gerst, K. L., Rosemartin, A. H., Switzer, J., & Weltzin, J. (2016, November). Daily accumulated temperature maps and short-term forecasts to support research, management, and planning needs. Agronomy Society of America-Crop Science Society of America-Soil Science Society of America Annual Meeting. Phoenix, AZ.
- Crimmins, T. M., Switzer, J., Rosemartin, A. H., Marsh, R., Gerst, K. L., Crimmins, M. A., Crimmins, T. M., Switzer, J., Rosemartin, A. H., Marsh, R., Gerst, K. L., & Crimmins, M. A. (2016, December). Documenting uncertainty and error in gridded growing degree day and spring onset maps generated by the USA National Phenology Network. American Geophysical Union Fall Meeting. San Francisco, California.
- Marsh, R., Crimmins, M. A., Crimmins, T. M., Gerst, K. L., Rosemartin, A. H., Switzer, J., & Weltzin, J. (2016, December). Developing and Delivering National-Scale Gridded Phenology Data Products. American Geophysical Union Fall Meeting. San Francisco, California.
- Weltzin, J., Crimmins, T. M., Crimmins, M. A., Gerst, K. L., Marsh, R., Rosemartin, A. H., & Weltzin, J. (2016, August). Development and delivery of continental-scale phenology gridded products. 101st Annual Meeting of the Ecological Society of America. Ft. Lauderdale, Florida.
- Weltzin, J., Crimmins, T. M., Crimmins, M. A., Gerst, K. L., Marsh, R., Rosemartin, A. H., Switzer, J., Weltzin, J., Crimmins, T. M., Crimmins, M. A., Gerst, K. L., Marsh, R., Rosemartin, A. H., & Switzer, J. (2016, August). Phenology in the United States: The information “resolution revolution” and the role of historical observational data. 101st Annual Meeting of the Ecological Society of America. Ft. Lauderdale, Florida.
- Barnett, L., Crimmins, T. M., Posthumus, E. E., & Schaffer, S. (2015, August). The power of long-term observation: Does Nature’s Notebook cultivate long-term participation in phenology monitoring?. 100th Annual Meeting of the Ecological Society of America. Baltimore, Maryland.
- Gerst, K. L., Rosemartin, A. H., Denny, E. G., Marsh, R., Crimmins, T. M., Moore, D. J., & Weltzin, J. F. (2015, August). Data products to support assessment and forecasting of phenology on multiple data products to support assessment and forecasting of phenology on multiple spatial scales.. 2015 Long Term Ecological Research Network (LTER) All Scientists Meeting. Estes Park, Colorado.
- Gerst, K. L., Weltzin, J. F., Rosemartin, A. H., Denny, E. G., Marsh, R., Crimmins, T. M., & Moore, D. J. (2015, August). Data products to support assessment and forecasting of phenology on multiple spatiotemporal scales.. 100th Annual Meeting of the Ecological Society of America. Baltimore, Maryland.
- Weltzin, J. F., Rosemartin, A. H., Crimmins, T. M., & Gerst, K. L. (2015, Fall). Development and validation of national phenology data products.. American Geophysical Union Fall Meeting.. San Francisco, California.
- Crimmins, T. M., Denny, E. G., Enquist, C. A., Gerst, K. L., Posthumus, E. E., Rosemartin, A. H., & Weltzin, J. F. (2014, August). Findings from the USA National Phenology Network’s Green Wave campaign. 99th Annual Meeting of the Ecological Society of America.. Sacramento, CA.
- Crimmins, T. M., Luvall, J. C., Sprigg, W. A., Levetin, E., Huete, A., Nickovic, S., Prasad, A., Vukovic, A., Van de Water, P. K., Budge, A. M., Hudspeth, W., & Bunderson, L. (2014, August). Nature’s Notebook provides phenology observations for NASA Juniper Phenology and Pollen Transport Project. 99th Annual Meeting of the Ecological Society of America. Sacramento, CA.
- Fuccillo, K. K., Crimmins, T. M., DeRivera, C., & Elder, T. S. (2014, August). Assessing accuracy in volunteer-based plant phenology monitoring. 99th Annual Meeting of the Ecological Society of America.. Sacramento, CA.
- Crimmins, T. M., & Rosemartin, A. H. (2013, December). How do modes of public engagement impact the development of robust data sets for climate change research?. American Geophysical Union Fall Meeting - ED51A. Era of Citizen Science: Intersection of Outreach, Scientific Research and Big Data I Posters. San Francisco, CA: American Geophysical Union.
- Crimmins, T. (2012, August). Join the USA National Phenology Network in tracking climate change using Nature s Notebook!. Conference on Public Participation in Scientific Research. Portland, Oregon.
- Crimmins, T., Kellermann, J., & Weltzin, J. (2012, August). A bird s eye view of the USA National Phenology Network: Expanding the scale of phenological research in avian ecology. 5th North American Ornithological Conference. Vancouver, Canada.
- Crimmins, T., Weltzin, J., & Kellerman, J. (2012, August). Anomalous warm spring of 2010 advances deciduous forest leaf-out: Application of the Nature s Notebook dataset and visualization analysis tool. 97th Ecological Society of America Annual Meeting. Portland, Oregon.
- Fuccillo, K., Crimmins, T., & Elder, T. (2012, August). Patterns in forest phenology: Can citizen scientists accurately assess phenological stages?. Conference on Public Participation in Scientific Research. Portland, Oregon.
- Fuccillo, K., Crimmins, T., & Elder, T. (2012, August). Patterns in forest plant phenology: Can citizen scientists accurately assess phenological changes?. 97th Ecological Society of America Annual Meeting. Portland, Oregon.
- Luvall, J., Sprigg, W., Levetin, E., Huete, A., Prasad, A., Pejanovic, G., Vukovic, A., Van, d., Budge, A., Hudspeth, W., Krapfl, H., Toth, B., Zelicoff, A., Myers, O., Bunderson, L., Ponce-Campos, G., Crimmins, T., Menache, M., & Vujadinovic, M. (2012, December). Use of MODIS satellite images to evaluate Juniperus spp. pollen phenology to support a pollen dispersal model, PREAM, to support public health allergy alerts. American Geophysical Union Fall Meeting. San Francisco, CA.
- Rosemartin, A., Crimmins, T., Enquist, C., Denny, E., & Weltzin, J. (2012, August). Answer questions at multiple scales with data provided by the USA National Phenology Network. 97th Ecological Society of America Annual Meeting. Portland, OR.
- Barnett, L., Kilcullen, K., Crimmins, T., Denny, E., Enquist, C., Marsh, R., Rosemartin, A., & Weltzin, J. (2011, July). Nature s Notebook: Plant & Animal Observing Program. Conserving the Future Wildlife Refuges and the Next Generation Conference. Madison, Wisconsin: USA-NPN/USFWS Partnership in Phenology Monitoring & Education.
- Crimmins, T., & Posthumus, E. (2011, November). Nature s Notebook: A Tool for Education and Research. The Wildlife Society Annual Conference. Waikoloa, Hawaii.
- Crimmins, T., Enquist, C., Rosemartin, A., Denny, E., & Weltzin, J. (2011, December). The USA National Phenology Network s National Phenology Database Is a Resource Ripe for Picking. American Geophysical Union Fall Meeting. San Francisco, California.
- Luvall, J., Sprigg, W., Levetin, E., Huete, A., Nickovic, S., Pejanovic, G., Van, d., Myers, O., Budge, A., Crimmins, T., Krapfl, H., & Zelicoff, A. (2011, March). Use of MODIS Satellite Images and an Atmospheric Dust Transport Model to Evaluate Juniperus spp. Pollen Phenology and Dispersal to Support Public Health Alerts. Annual Meeting of the American Academy of Allergy, Asthma & Immunology. San Francisco, California.
Reviews
- Crimmins, T. M. (2014. “Finding a climate change signal in unexpected places.” Review of Walden warming: climate change comes to Thoreau’s woods.(pp 3234-3235). Ecology.
Others
- Crimmins, M. A., & Crimmins, T. M. (2020, June). Spring 2020 started with a bang; how did it wind up?. Nature Research Ecology & Evolution Community. https://natureecoevocommunity.nature.com/posts/spring-2020-started-with-a-bang-how-did-it-wind-up
- Crimmins, M. A., & Crimmins, T. M. (2020, August). Data from: Does an early spring indicate an early summer? relationships between intra-seasonal growing degree day thresholds.. Dryad Digital Repository.
- Crimmins, T. M., Gerst, K. L., Posthumus, E. E., Rosemartin, A. H., & Weltzin, J. F. (2019, July). Pheno Forecasts predict seasonal activity of pest and invasive species to support decision making.. USA-NPN Information Sheet. https://pubs.er.usgs.gov/publication/70204926
- Crimmins, T. M. (2018, March). USA National Phenology Network 2017 Annual Report.. USA-NPN Programmatic Series. https://www.usanpn.org/files/npn/reports/USA-NPN_annual_report-2017.pdf
- Weltzin, J. F., Crimmins, T. M., Posthumus, E. E., Walker, J. J., & Waller, E. K. (2018, July). Spring leaf and bloom index dates (1880-2013) and migratory bird flyways: U.S. Geological Survey data release. ScienceBase. https://doi.org/10.5066/P9Z4C9LE
- Crimmins, T. M. (2017, March). USA National Phenology Network 2016 Annual Report. USA-NPN Programmatic Series.
- Crimmins, T. M. (2015, February). USA National Phenology Network 2014 Annual Report.. USA-NPN Programmatic Report Series.More infoUSA-NPN National Coordinating Office. 2015. USA National Phenology Network 2014 Annual Report. USA-NPN Programmatic Series 2015-001. www.usanpn.org. Primary author.
- Gerst, K. L., Rosemartin, A. H., Denny, E. G., Enquist, C. A., Marsh, R., Moore, D. J., Crimmins, T. M., & Weltzin, J. F. (2015, March). USA National Phenology Network data product development framework and data product catalog, v 1.0.. USA National Phenology Network Technical Report Series..More infoUSA-NPN Technical Series 2015-001.
- Puckett, C., & Crimmins, T. M. (2013, March). Tick-Tock, Nature’s Clock Out of Sync?. USGS Science Features: Top Story. http://www.usgs.gov/blogs/features/usgs_top_story/tick-tock-natures-clock-out-of-sync/?from=title
- Crimmins, T. M. (2012, Fall). USA National Phenology Network 2011 Annual Report. USA-NPN National Coordinating Office. USA-NPN Programmatic Series 2011-001. www.usanpn.org
- Kellermann, J., Crimmins, T., Denny, E., Enquist, C., Marsh, R., Rosemartin, A., & Weltzin, J. (2012, Fall). USA National Phenology Network 2011 Data & Participant Summary. USA-NPN Technical Series 2012-001.
- Crimmins, T. M. (2011, Fall). "Track Plants and Animals with Nature's Notebook" USA-NPN Information Sheet. USA National Phenology Network. http://usanpn.org/files/shared/files/Track%20Plant%20and%20Animal%20Phenology%20with%20Natures%20Notebook.pdf
- Crimmins, T. M. (2011, Fall). Stakeholder Perspectives Info Sheet. USA National Phenology Network. http://www.usanpn.org/files/shared/files/Stakeholder%20Perspectives.pdf
- Crimmins, T. M. (2011, October). 142 squaremiles for every living thing. NPR's Weekend Edition. http://www.npr.org/2011/10/23/141629739/bioblitz-sweeps-142-square-miles-for-every-living-thingMore infoExact Date: 10/23/2011
- Crimmins, T. M. (2010, Fall). USA National Phenology Network 2009 Annual Report. USA-NPN National Coordinating Office. www.usanpn.orgMore infoUSA-NPN Programmatic Series 2010-001
- Crimmins, T. M. (2010, Fall). USA-NPN Strategic Plan. USA-NPN National Coordinating Office. USA-NPN Programmatic Series 2010-002. www.usanpn.org
- Crimmins, T., Rosemartin, A., Lincicome, A., & Weltzin, J. (2010, Fall). 2009 Observer Survey. USA-NPN Technical Series 2010-003. www.usanpn.org
- Crimmins, T., Rosemartin, A., Thomas, K., Marsh, R., Denny, E., & Weltzin, J. (2010, Fall). USA National Phenology Network 2009 Data Summary. USA-NPN Technical Series 2010-002.
- Thomas, K., Weltzin, J., Denny, E., Miller-Rushing, A., Crimmins, T., & Rosemartin, A. (2010, Fall). The National Phenology Monitoring System, v0.1. USA-NPN Technical Series 2010-001. www.usanpn.org