Matthew S Recsetar

Interests

Teaching

Aquaponics, Cannabis Cultivation, Food production Technology

Research

Aquaponics, Cannabis culture technologies, Controlled Environment Agriculture, Aquaculture, Water reuse, Sustainability, Sustainable Wastewater treatment technologies, Nutrient mineralization in aquaponics, nutrient delivery systems in aquaponics, Fish Culture

Courses

Scholarly Contributions

Journals/Publications

• Fitzsimmons, K. M., Hoppe-jones, C., Cuello, J. L., Snyder, S. A., Recsetar, M. S., Hoppe-jones, C., & Cuello, J. L. (2021). Evaluation of a recirculating hydroponic bed bioreactor for removal of contaminants of emerging concern from tertiary-treated wastewater effluent.. Chemosphere, 262, 128121. doi:10.1016/j.chemosphere.2020.128121
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  Tertiary-treated effluent from a municipal wastewater treatment plant in Tucson, AZ, was added to recirculating hydroponic bed bioreactors filled with light expanded clay aggregate (LECA) and recirculated for 10 days. Bioreactors were planted with high and low densities of sorghum (Sorghum bicolor), switchgrass (Panicum virgatum) and Bacillus thuringiensis cotton (Gossypium sp.). The experiment also included a non-planted bioreactor treatment and a control bioreactor with neither plants nor substrate medium. Of 46 contaminants of emerging conern assayed with liquid chromatography tandem mass spectrometry (LC-MS/MS), 16 were initially identified at detectable levels in the effluent. After one day, concentrations of Ibuprofen and Diphenhydramine fell below detection limits in all treatments as well as the control. After five days, initial concentrations of atenolol, benzotriazole, carbamazepine, hydrochlorothiazide, iohexol, iopamidol iopromide, primidone, sulfamethoxazole and tris TCPP were reduced by greater than 80% in all treatments, while the control exhibited little to no removal. Diclofenac, simazine and sucralose exhibited variable removal rates among treatments ranging from 44 to 84% after five days. After 10 days, concentrations of DEET, diclofenac, iopromide, primidone and simazine were all below detection levels, while there was near zero removal in the control. Bioreactors planted with cotton had significantly more removal of sulfamethoxazole than unplanted bioreactors by 16-19% after five days and by an additional 18-20% removal after 10 days. The percentage uptake of benzotriazole by every planted treatment was significantly higher than the non-planted treatment after five and 10 days. Significant contaminant removal occurred in the media substrate, likely through adsorption to LECA or microbial degradation. More research is needed to examine specific pathways of degradation and removal by various microbials and plants.
• Recsetar, M. S., Cuello, J. L., & Fitzsimmons, K. (2020). Hydrodynamics of a Hydroponic Bed Bioreactor with Different Substrate Media. Ecological Engineering, 149(105744), 13. doi:https://doi.org/10.1016/j.ecoleng.2020.105744
• Kumar, G., Engle, C. R., Hanson, T. R., Tucker, C. S., Brown, T. W., Bott, L. B., Roy, L. A., Boyd, C. E., Recsetar, M. S., Park, J., & Torrans, E. L. (2018). Economics of alternative catfish production technologies. Journal of The World Aquaculture Society, 49(6), 1039-1057. doi:10.1111/jwas.12555
• Recsetar, M. S. (2015).

  THE EFFECT OF DIFFERENT WINTER FEEDING REGIMES ON SURVIVAL, GROWTH, AND LIPID COMPOSITION OF CENTRARCHIDS AND BAITFISH IN ARKANSAS

  . 한국수산과학회 양식분과 학술대회.
• Recsetar, M. S., & Bonar, S. A. (2015). Effectiveness of Two Commercial Rotenone Formulations in the Eradication of Virile Crayfish Orconectes virilis. North American Journal of Fisheries Management, 35(3), 616-620. doi:10.1080/02755947.2015.1017127
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  AbstractThe virile or northern crayfish Orconectes virilis is an invasive species throughout much of the USA, damaging aquatic communities where it is introduced. Therefore, identification of effective methods for its eradication from areas in which it is unwanted is important. We studied the effectiveness of two commercial formulations of rotenone, Chem Fish Regular and CFT Legumine, for virile crayfish control. Although both formulations were effective for fish eradication, earlier observations by fisheries managers suggested that the relative effectiveness of the two formulations differs for crayfish. The only noteworthy difference between the formulations is that the former contains a synergist. In our first experiment, we tested each toxicant at the maximum labeled dosage (5 ppm) and found CFT Legumine to be 100% ineffective (0% mortality), while the Chem Fish Regular treatment resulted in 12.5% mortality. After we deemed Chem Fish Regular to be the only toxicant with any effectiveness against virile...
• Recsetar, M. S., Bonar, S. A., & Feuerbacher, O. G. (2014). Growth and Survival of Apache Trout Under Static and Fluctuating Temperature Regimes. Transactions of The American Fisheries Society, 143(5), 1247-1254. doi:10.1080/00028487.2014.931298
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  AbstractIncreasing stream temperatures have important implications for arid-region fishes. Little is known about effects of high water temperatures that fluctuate over extended periods on Apache Trout Oncorhynchus gilae apache, a federally threatened species of southwestern USA streams. We compared survival and growth of juvenile Apache Trout held for 30 d in static temperatures (16, 19, 22, 25, and 28°C) and fluctuating diel temperatures (±3°C from 16, 19, 22 and 25°C midpoints and ±6°C from 19°C and 22°C midpoints). Lethal temperature for 50% (LT50) of the Apache Trout under static temperatures (mean [SD] = 22.8 [0.6]°C) was similar to that of ±3°C diel temperature fluctuations (23.1 [0.1]°C). Mean LT50 for the midpoint of the ±6°C fluctuations could not be calculated because survival in the two treatments (19 ± 6°C and 22 ± 6°C) was not below 50%; however, it probably was also between 22°C and 25°C because the upper limb of a ±6°C fluctuation on a 25°C midpoint is above critical thermal maximum for Apa...
• Recsetar, M. S., & Bonar, S. A. (2013). Survival of Apache Trout Eggs and Alevins under Static and Fluctuating Temperature Regimes. Transactions of The American Fisheries Society, 142(2), 373-379. doi:10.1080/00028487.2012.741551
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  Abstract Increased stream temperatures due to global climate change, livestock grazing, removal of riparian cover, reduction of stream flow, and urbanization will have important implications for fishes worldwide. Information exists that describes the effects of elevated water temperatures on fish eggs, but less information is available on the effects of fluctuating water temperatures on egg survival, especially those of threatened and endangered species. We tested the posthatch survival of eyed eggs and alevins of Apache Trout Oncorhynchus gilae apache, a threatened salmonid, in static temperatures of 15, 18, 21, 24, and 27°C, and also in treatments with diel fluctuations of ±3°C around those temperatures. The LT50 for posthatch survival of Apache Trout eyed eggs and alevins was 17.1°C for static temperatures treatments and 17.9°C for the midpoints of ±3°C fluctuating temperature treatments. There was no significant difference in survival between static temperatures and fluctuating temperatures that share...
• Zeigler, M. P., Brinkman, S. F., Caldwell, C. A., Todd, A. S., Recsetar, M. S., & Bonar, S. A. (2013). Upper Thermal Tolerances of Rio Grande Cutthroat Trout under Constant and Fluctuating Temperatures. Transactions of The American Fisheries Society, 142(5), 1395-1405. doi:10.1080/00028487.2013.811104
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  Abstract The Rio Grande Cutthroat Trout Oncorhynchus clarkii virginalis is the southernmost subspecies of Cutthroat Trout, and as with the other subspecies, stream temperature regulates growth, reproductive success, distribution, and survival. An understanding of the upper thermal tolerance of Rio Grande Cutthroat Trout is important for developing water temperature standards and for assessing suitable habitat for reintroduction and management. Hatch success of Rio Grande Cutthroat Trout eggs was determined under static temperatures. The thermal requirements of fry and juveniles were also assessed under static and fluctuating temperature regimes using the acclimated chronic exposure method. Egg hatch success was 46–70% from 6°C to 16°C but declined significantly at 18°C and 20°C. Maximum growth of fry that were fed to satiation occurred at 15.3°C. The 30-d ultimate upper incipient lethal temperature (UUILT) was 22.6°C for fry and 21.7°C for juveniles. Survival during fluctuating temperature experiments was...
• Recsetar, M. S., Zeigler, M. P., Ward, D. L., Bonar, S. A., & Caldwell, C. A. (2012). Relationship between fish size and upper thermal tolerance. Transactions of The American Fisheries Society, 141(6), 1433-1438. doi:10.1080/00028487.2012.694830
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  Abstract Using critical thermal maximum (CTMax) tests, we examined the relationship between upper temperature tolerances and fish size (fry–adult or subadult lengths) of rainbow trout Oncorhynchus mykiss (41–200-mm TL), Apache trout O. gilae apache (40–220-mm TL), largemouth bass Micropterus salmoides (72–266-mm TL), Nile tilapia Oreochromis niloticus (35–206-mm TL), channel catfish Ictalurus punctatus (62–264 mm-TL), and Rio Grande cutthroat trout O. clarkii virginalis (36–181-mm TL). Rainbow trout and Apache trout were acclimated at 18°C, Rio Grande cutthroat trout were acclimated at 14°C, and Nile tilapia, largemouth bass, and channel catfish were acclimated at 25°C, all for 14 d. Critical thermal maximum temperatures were estimated and data were analyzed using simple linear regression. There was no significant relationship (P > 0.05) between thermal tolerance and length for Nile tilapia (P = 0.33), channel catfish (P = 0.55), rainbow trout (P = 0.76), or largemouth bass (P = 0.93) for the length range...