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Refereed articles or reviews Gillmore, A. B.*, Steren, C. A., D. G. Hayes, and S. M. Schaeffer. 2025. Quantification of Polybutylene Adipate Terephthalate-based Micro- and Nano-plastics from Soil Using Proton Nuclear Magnetic Resonance Spectroscopy. Journal of Visualized Experiments, Vol 220, e67471. Carbajal, M., D. A. Ramírez, C. Turin, S. M. Schaeffer, J. Konkel*, J. Ninanya, J. Rinza, F. De Mendiburu, P. Zorogastua, L. Villaorduña, and R. Quiroz. 2024. From Rangelands to Cropland, Land-Use Change and Its Impact on Soil Organic Carbon Variables in a Peruvian Andean Highlands: A Machine Learning Modeling Approach. Ecosystems, 27(7):899-917. Dhaliwal, J. K., F. R. Lussich, S. Jagadamma, S. M. Schaeffer, and D. Saha. 2024. Long-term tillage and cover cropping differentially influenced soil nitrous oxide emissions from cotton cropping system. Agronomy Journal, 116(6):2804-2816. Lussich, F. R., J.K. Dhaliwal, A.M. Faiia, S. Jagadamma, S. M. Schaeffer, and D. Saha. 2024. Cover crop residue decomposition triggered soil oxygen depletion and promoted nitrous oxide emissions. Scientific Reports, 14 (1): 8437. McDearis, R.E., J. Zhuang, Liang, X., Fine, A.K.*, S. M. Schaeffer, and M. A. Radosevich. 2024. Viral abundance and lysogenic fraction respond dynamically to cover-crop burn down and vary with conservation soil management practices. Agriculture, Ecosystems and Environment, 371, 109078. Astner, A., A. B. Gillmore*, Y. Yu, M. Flury, J. M. DeBruyn, S. M. Schaeffer, and D. G. Hayes. 2023. Formation, behavior, properties and impact of micro- and nanoplastics on agricultural soil ecosystems (A Review). NanoImpact, 31:100474. Astner, A., D. G. Hayes, H. Oneill, B. Evans, S. Pingali, V. Urban, T. M. Young, and S. M. Schaeffer. 2023. Assessment of cryogenic pretreatment for simulating environmental weathering in the formation of surrogate micro- and nanoplastics from agricultural mulch film. Science of the Total Environment, 870: 161867 (Open Data: https://doi.org/10.5061/dryad.9w0vt4bkn ). Bandopadhyay, S., M. English, M. B. Anunciado, M. Starrett, J. Hu, J. E. Liquet y González, D. G. Hayes, S. M. Schaeffer, and J. M. DeBruyn. 2023. Organic and inorganic nitrogen amendments reduce biodegradation of biodegradable plastic mulch films. SOIL, 9(2):499-516. Kumar, P., A. Anders, E. Bauer, N. E. Blair, M. Cain, A. Dere, J. Druhan, T. Filley, C. Giannopoulos, A. E. Goodwell, D. Grimley, D. Karwan, L. L. Keefer, J. Kim, L. Marini, M. Muste, A. T. Papanicolaou, B. L. Rhoads, L. C. Hernandez Rodriguez, S. Roque-Malo, S. M. Schaeffer, A. Stumpf, A. Ward, L. Welp, C. G. Wilson, Q. Yan, and S. Zhou. 2023. Emergent role of critical interfaces in the dynamics of intensively managed landscapes. Earth-Science Reviews, 244:104543. Dhaliwal, J. K., D. Panday, D. Saha, J. Lee, S. Jagadamma, S. M. Schaeffer, and A. Mengistu. 2022. Predicting and interpreting cotton yield and its determinants under long-term conservation management practices using machine learning. Computers and Electronics in Agriculture, 199: 107107. Duan, N.*, L. Li*, X. Liang, A. Fine*, J. Zhuang, M. A. Radosevich, and S. M. Schaeffer. 2022. Variation in bacterial community structure under long-term fertilization, tillage, and cover cropping in continuous cotton production. Frontiers in Microbiology, 13, 847005. Duan, N.*, L. Li*, X. Liang, R. McDearis, A. K. Fine*, Z. Cheng, J. Zhuang, M. A. Radosevich, and S. M. Schaeffer. 2022. Composition of soil viral and bacterial communities after long-term tillage, fertilization, and cover cropping management. Applied Soil Ecology, 177, 104510. Duan, N.*, M. A. Radosevich, J. Zhuang, J. M. DeBruyn, M. E. Staton, and S. M. Schaeffer. 2022. Identification of novel viruses and their microbial hosts from soils with long-term nitrogen fertilization and cover cropping management. mSystems, 6:e00571-22. Jin, T., J. Tang, H. Lyu, L. Wang, A. B. Gillmore*, and S. M. Schaeffer. 2022. Activities of microplastics (MPs) in agricultural soil: A review of MPs pollution from the perspective of agricultural ecosystems. Agricultural and Food Chemistry, 70: 4182-4201. Li, L.*, J. Konkel*, V. Jin, and S. M. Schaeffer. 2022. Conservation management improves agroecosystem function and resilience of soil nitrogen cycling in response to seasonal changes in climate. Science of the Total Environment, 779:146457. Sipes, K., R. Paul, A. K. Fine*, P. Li, R. Liang, J. Boike, T. C. Onstott, T. A. Vishnivetskaya, S. M. Schaeffer, and K. G. Lloyd. 2022. Permafrost active layer microbes from Ny Ålesund, Svalbard (79°N) show autotrophic and heterotrophic metabolisms with diverse carbon-degrading enzymes. Frontiers in Microbiology, 12:757812. Todd-Brown, KEO, R. Z. Abramoff, J. Beem-Miller, H. K. Blair, S. Earl, K. J. Frederick, D. R. Fuka, M. G. Santamaria, J. W. Harden, K. Heckman, L. J. Heran, J. R. Holmquist, A. M. Hoyt, D. H. Klinges, D. S. LeBauer, S. M. Schaeffer, and S. Stoner, N. van Gestel, S. F. von Fromm, M. L. Younger. 2022. The promise of big diverse soil data, moving current practices towards future potential. Biogeosciences, 19(14):3505-3522. Xie, N., T. An, J. Zhuang, M. A. Radosevich, S. M. Schaeffer, S. Li, and J. Wang. 2022. High initial soil organic matter level combined with aboveground plant residues increased microbial carbon use efficiency but accelerated soil priming effect. Biogeochemistry, 160, 1-15. Yoder, D. C., S. Jagadamma, S. Singh, A. Nouri, S. Xu, D. Saha, S. M. Schaeffer, N. Adotey, F. R. Walker, J. Lee, and M. Budipradigdo. 2022. Soil Health: Meaning, Measurement, and Value through a Critical Zone Lens. Journal of Soil and Water Conservation., 77(1): 88-99. Zhou, S., C. G. Wilson, J. M. Hathaway, and S. M. Schaeffer. 2022. Tracking aggregate turnover under raindrop impact and wetting-drying cycles using rare earth elements. Catena, 213:106227. Anunciado, M. B., L. C. Wadsworth, D. G. Hayes, M. E. English*, S. M. Schaeffer, H. Y. Sintim, and M. Flury. 2021. Impact of Agricultural Weathering on Physicochemical Properties of Biodegradable Plastic Mulch Films: Comparison of Two Diverse Climates Over Four Successive Years. Journal of Polymers and the Environment, 29:1–16 (Open Data: https://doi.org/10.5061/dryad.0gb5mkkzh ). Fan, D., M. Flury, S. M. Schaeffer, Y. Xu, and J. Wang. 2021. Does long-term use of biodegradable plastic mulch affect soil carbon stock?. Resources, Conservation and Recycling, 175, 105895. Hu, J., V. Jin, J. Konkel*, S. M. Schaeffer, L. Schneider, and J. M. DeBruyn. 2021. Soil health management enhances microbial nitrogen cycling capacity and activity. mSphere, 6: e01237-01220. Li, L.*, J. Konkel*, V. Jin, and S. M. Schaeffer. 2021. Conservation management improves agroecosystem function and resilience of soil nitrogen cycling in response to seasonal changes in climate. Science of The Total Environment, 779: 146457. Liu, Z., J. Tang, X. Ren, and S. M. Schaeffer. 2021. Effects of phosphorus modified nZVI-biochar composite on emission of greenhouse gases and changes of microbial community in soil. Environmental Pollution, 274: 116483. Sintim, H. Y., S. Bandopadhyay, M. E. English*, A. I. Bary, J. E. Liquet y Gonzalez, J. M. DeBruyn, S. M. Schaeffer, C. A. Miles, and M. Flury. 2021. Four years of continuous use of biodegradable plastic mulch: Impact on soil and groundwater quality. Geoderma, 381: 114665. Wang, Z., M. Li, M. Flury, S. M. Schaeffer, Y. Chang, Z. Tao, Z. Jia, S. Li, F. Ding, and J. Wang. 2021. Agronomic performance of polyethylene and biodegradable plastic film mulches in a maize cropping system in a humid continental climate. Science of The Total Environment, 786, 147460. Zhang, B., Z. Wei, S. M. Schaeffer, A. Liang, and X. Ding. 2021. Recovery of bacterial communities and functions of soils under ridge tillage and no-tillage after different intensities and frequencies of drying-wetting disturbances in agroecosystems of northeastern China. Catena, 203, 10567. Li, Lidong*, and S. M. Schaeffer. 2020. Stabilization mechanisms of isotope-labeled carbon substrates in soil under moisture pulses and conservation agricultural management. Geoderma, Volume 380, 15 December 2020. Sintim, H. Y., M. B. Anunciado, S. Bandopadhyay, M. E. English*, A. I. Bary, D. G. Hayes, L. C. Wadsworth, S. M. Schaeffer, J. M. DeBruyn, C. A. Miles, J. P. Reganold, and M. Flury. 2020. In situ degradation of biodegradable plastic mulch films in compost and agricultural soils. Science of the Total Environment, 727: 138668. Xu, Xiangru*, S. M. Schaeffer, S. Zuhe, J. Zhang, T. An, and J. Wang. 2020. Carbon stabilization in aggregate fractions responds to straw input levels under varied soil fertility levels. Soil and Tillage Research, Volume 199, May 2020, 10459. Ding, F., S. Li, X. Lu, F. A. Dijkstra, S. M. Schaeffer, T. An, J. Pei, and J. Wang. 2019. Opposite effects of nitrogen fertilization and plastic film mulching on crop N and P stoichiometry in a temperate agroecosystem. Journal of Plant Ecology. Keenan, S. W., S. M. Schaeffer, and J. M. DeBruyn. 2019. Spatial changes in soil stable isotopic composition in response to carrion decomposition. Biogeosciences, 16: 3929–3939. Li, L.*, C. B. Wilson*, H. He, X. Zhang, F. Zhou, and S. M. Schaeffer. 2019. Physical, biochemical, and microbial controls on amino sugar accumulation in soils under long-term cover cropping and no-tillage farming. Soil Biology and Biochemistry, 135, 369-378. Liang, X., J. Zhuang, F. E. Loffler, Y. Zhang, J. M. DeBruyn, S. W. Wlihelm, S. M. Schaeffer, and M. A. Radosevich. 2019. Viral and bacterial community responses to stimulated Fe(III)-bioreduction during simulated subsurface bioremediation. Environmental Microbiology, 21, 2043-2055. Liang, X., M. A. Radosevich, F. Loffler, S. M. Schaeffer, and J. Zhuang. 2019. Impact of microbial iron oxide reduction on the transport of diffusible tracers and non-diffusible nanoparticles in soils. Chemosphere, 220, 391-402. Sintim, H. Y., A. I. Bary, D. G. Hayes, M. E. English*, S. M. Schaeffer, C. A. Miles, A. Zelenyuk, K. Suski, and M. Flury. 2019. Release of micro-and nanoparticles from biodegradable plastic during in situ composting. Science of the Total Environment, 675, 686-693. Sintim, H. Y., S. Bandopadhyay, M. E. English, A. I. Bary, J. M. DeBruyn, S. M. Schaeffer, C. A. Miles, J. P. Reganold, and M. Flury. 2019. Impact of biodegradable plastic mulch on soil health. Agriculture, Ecosystems and Environment, 273: 36-49. Sistla, S. A., S. M. Schaeffer, and J. P. Schimel. 2019. Plant community regulates decomposer response to freezing more strongly than the rate or extent of the freezing regime. Ecosphere, 10, e02608. Xu, S., S. L. Ottinger, S. M. Schaeffer, J. M. DeBruyn, C. N. Stewart, Jr., M. Mazarei, and S. Jagadamma. 2019. Effects of field-grown transgenic switchgrass carbon inputs on soil organic carbon cycling. PeerJ, e7887. Xu, X.*, T. An, J. Zhang, Z. Sun, S. M. Schaeffer, and J. Wang. 2019. Transformation and stabilization of straw residue carbon in soil affected by soil types, maize straw addition and fertilized levels of soil. Geoderma, 337: 622-629. Zhao, Y., S. Shao, S. M. Schaeffer, X. Bao, W. Zhang, B. Zhu, H. He, and X. Zhang. 2019. Methodological clarification for estimating the input of plant-derived carbon in soils under elevated CO2 based on a 13C-enriched CO2 labeling experiment. Plant and Soil, 440:569–580. Zhou, Y.*, W. Zhang, X. Cheng, W. Harris, S. M. Schaeffer, X. Xu, and B. Zhao. 2019. Factors affecting 13C enrichment of vegetation and soil in temperate grasslands in Inner Mongolia, China. Journal of Soils and Sediments, 5, 2190-2199. Farmer, J., S. M. Schaeffer, B. Zhang, T. T. An, J. B. Pei, J. Zhuang, and J. K. Wang. 2018. How soil bacterial communities with seasonal variation respond differently to long-term fertilization and plastic film mulching. Polish Journal of Environmental Studies, 27(4), 1483-1495. Homyak, P. M., J. C. Blankinship, E. Slessarev, S. M. Schaeffer, S. Manzoni, and J. P. Schimel. 2018. Effects of altered dry-season length and plant inputs on soluble soil carbon. Ecology, 99(10):2348-2362. Keenan, S. W., S. M. Schaeffer, V. Jin, and J. M. DeBruyn. 2018. Mortality hotspots: nitrogen cycling in forest soils during vertebrate decomposition. Soil Biology and Biochemistry, 121, pp. 165-176. Zheng, L., J. Pei, X. Jin, S. M. Schaeffer, T. An, and J. Wang. 2018. Impact of plastic film mulching and fertilization on contribution of straw-derived nitrogen in a soil-plant system based on 15N-labeling. Geoderma, 317:15-22. DeBruyn, J. M., D. A. Bevard, M. E. Essington, J. Y. McKnight, S. M. Schaeffer, H. Baxter, M. Mazarei, D. G. J. Mann, R. A. Dixon, F. Chen, C. Zhou, Z. Y. Wang, and C. N. Stewart, Jr.. 2017. Field grown transgenic switchgrass (Panicum virgatum L.) with altered lignin does not affect soil chemistry, microbiology and carbon storage potential. Global Change Biology Bioenergy, 9:1100–1109. Hayes, D. G., L. C. Wadsworth, H. Y., Sintim, M. Flury, M. English*, S. M. Schaeffer, and A. M. Saxton. 2017. Effect of Diverse Weathering Conditions on the Physicochemical Properties of Biodegradable Plastic Mulches. Polymer Testing, 62: 454-467. McKnight, J. Y.*, C. Harden, and S. M. Schaeffer. 2017. Soil CO2 flux trends with differences in soil moisture among four types of land use in an Ecuadorian páramo landscape. Journal of Physical Geography, 38(1):51-61. Schaeffer, S. M., C. M. Boot, D. R. Micholett, and J. P. Schimel. 2017. Drought length increases microbial biomass and soluble organic matter in a California annual grassland. Soil Biology and Biochemistry, 115:54-62. Buckeridge, K., S. M. Schaeffer, and J. P. Schimel. 2016. Vegetation leachate during arctic thaw enhances soil microbial phosphorus. Ecosystems, 19(3):477-489. An, T., S. M. Schaeffer, J. Zhuang, M. A. Radosevich, and et al. 2015. Dynamics and distribution of 13C-labeled straw carbon by microorganisms as affected by soil fertility levels in the Black Soil region of Northeast China. Biology and Fertility of Soils, 51, 605-613. An, T., S. M. Schaeffer*, S. Li, S. Fu, J. Pei, H. Li, J. Zhuang, M. A. Radosevich, and J. Wang. 2015. Carbon fluxes from plants to soil and dynamics of microbial immobilization under plastic film mulching and fertilizer application using 13C pulse-labeling. Soil Biology and Biochemistry, 80, 53-61. Cobaugh, K. L., S. M. Schaeffer, and J. M. DeBruyn. 2015. Functional and structural succession of soil microbial communities below decomposing human cadavers. PLoS ONE, 10(6): e0130201. Mbuthia, L. W., V. Acosta-Martinez, J. M. DeBruyn, S. M. Schaeffer, D. D. Tyler, E. Odoi, M. Mpheshea, F. R. Walker, and N. S. Eash. 2015. Long term tillage, cover crop, and fertilization effects on microbial community structure, activity: implications for soil quality. Soil Biology & Biochemistry, 89: 24-34. Trout Fryxell, R. T., J. E. Moore, M. D. Collins, Y. Kwan, S. R. Jean-Philippe, S. M. Schaeffer, A. Odoi, M. Kennedy, and A. E. Houston. 2015. Habitat and vegetation variables are not enough when predicting tick populations in southeastern United States. PLoS ONE. Zhang, X.Y., W. Y. Dong, X. Q. Dai, S. M. Schaeffer, F. T. Yang, M. A. Radosevich, L. L. Xu, X. Y. Liu, and X. M. Sun. 2015. Responses of absolute and specific soil enzyme activities to long term additions organic and mineral fertilizer. Science of the Toal Enviroment, 536:59-67. Blankinship, J. C., C. A. Becerra, S. M. Schaeffer, and J. P. Schimel. 2014. Separating cellular metabolism from exoenzyme activity in soil organic matter decomposition. Soil Biology and Biochemistry, 71:68-75. Dong, W-Y, X. Zhang, X. Dai, X. Fu, F. Yang, X. Liu, X. Sun, X. Wen, and S. M. Schaeffer. 2014. Changes in soil microbial community composition in response to fertilization of paddy soils in subtropical China. Applied Soil Ecology, 84, 140-147. Jagadamma, S., M. A. Mayes, J. M. Steinweg, and S. M. Schaeffer. 2014. Substrate quality alters microbial mineralization of added substrate and soil organic carbon. Biogeosciences Discussions, 11, 4451-4482. Jagadamma, S., M. A. Mayes, J. M. Steinweg, and S. M. Schaeffer. 2014. Substrate quality alters microbial mineralization of added substrate and soil organic carbon. Biogeosciences, 11: 4665–4678. Manzoni, S., S. M. Schaeffer, G. Katul, A. Porporato, and J. P. Schimel. 2014. A theoretical analysis of microbial eco-physiological and diffusion limitations to carbon cycling in drying soils. Soil Biology and Biochemistry, 73, 69-83. Turnbull, T., S. R. Jean-Philippe, R. C. Albright, D. S. Buckley, S. M. Schaeffer, and P. E. Wiseman. 2014. Investigating land-use change on street tree ecosystems. Open Journal of Forestry, 4:467-480. Boot, C. M., S. M. Schaeffer, and J. P. Schimel. 2013. Static osmolyte concentrations in microbial biomass during seasonal drought in a California grassland. Soil Biology and Biochemistry, 57:356-361. Carbone, M. S., A. P. Williams, A. M. Ambrose, C. M. Boot, E. Bradley, T. E. Dawson, S. M. Schaeffer, and J. P. Schimel. 2013. Cloud shading and fog drip influence the metabolism of a coastal pine ecosystem. Global Change Biology, 19:484-497. Schadel, C., Y. Luo, R. D. Evans, S. Fei, and S. M. Schaeffer. 2013. Separating soil CO2 efflux into C pool specific decay rates via inverse analysis of soil incubation data. Oecologia, 171:721-732. Schaeffer, S. M., E. Sharp, J. P. Schimel, and J. M. Welker. 2013. Soil-plant N processes in a High Arctic ecosystem, NW Greenland are altered by long-term experimental warming and higher rainfall. Global Change Biology, 19:3529-3539. Schaeffer, S. M., S. Ziegler, J. Belnap, and R. D. Evans. 2012. Effects of Bromus tectorum invasion on microbial carbon and nitrogen cycling in two adjacent undisturbed arid grassland communities. Biogeochemistry, 111:427-441. Schimel, J. P., and S. M. Schaeffer. 2012. Microbial community composition and carbon cycling in soil. Frontiers in Terrestrial Microbiology, 3:348. Carbone, M. S., C. J. Still, A. M. Ambrose, T. E. Dawson, A. P. Williams, C. M. Boot, S. M. Schaeffer, and J. P. Schimel. 2011. Seasonal and episodic moisture controls on plant and microbial contributions to soil respiration. Oecologia, 167:265-278. Jin, V. A., S. M. Schaeffer, S. Ziegler, and R. D. Evans. 2011. Soil water availability and microsite mediate fungal and bacterial phospholipid fatty acid biomarker abundances in Mojave Desert soils exposed to elevated atmospheric CO2. Journal of Geophysical Research, 116, G02001. Bowling, D. R., W. J. Massman, S. M. Schaeffer, S. P. Burns, R. K. Monson, and M. W. Williams. 2009. Biological and physical influences on the carbon isotope content of CO2 in a subalpine forest snow pack. Biogeochemistry, 95:37-59. Hultine, K. R., T. L. Jackson, K. G. Burtch, S. M. Schaeffer, and J. R. Ehleringer. 2008. Elevated stream inorganic nitrogen impacts on a dominant riparian tree species: results from an experimental riparian stream system. Journal of Geophysical Research, 113, G04025. Schaeffer, S. M., D. E. Anderson, S. P. Burns, R. K. Monson, J. Sun, C. Yi, and D. R. Bowling. 2008. Canopy structure and atmospheric flows in relation to the δ13C of respired CO2 in a subalpine coniferous forest. Agricultural and Forest Meteorology, 148:592-605. Schaeffer, S. M., J. B. Miller, B. W. Vaughn, J. W. C. White, and D. R. Bowling. 2008. Long-term field performance of tunable diode laser spectrometer for analysis of stable isotopic composition of CO2 in forest air. Atmospheric Chemistry and Physics, 8:5263-5277. Schaeffer, S. M., S. A. Billings, and R. D. Evans. 2007. Laboratory incubations reveal potential responses of soil nitrogen cycling to changes in soil C and N availability in Mojave Desert soils exposed to elevated atmospheric CO2. Global Change Biology, 13:854-865. Schaeffer, S. M., and R. D. Evans. 2005. Pulses of soil carbon and nitrogen affect soil nitrogen dynamics in an arid Colorado Plateau shrubland. Oecologia, 145:425-433. Austin, A. T., M. L. Yahdijan, J. M. Stark, J. Belnap, A. Porporato, I. C. Burke, U. Choromanska, D. Ravetta, and S. M. Schaeffer. 2004. Water pulses and biogeochemical cycles in arid and semiarid ecosystems. Oecologia, 141:221-235. Billings, S. A., S. M. Schaeffer, and R. D. Evans. 2004. Soil microbial activity and N availability with elevated CO2 in Mojave Desert soils. Global Biogeochemical Cycles, 18:GB1011. Billings, S. A., S. M. Schaeffer, and R. D. Evans. 2003. Effects of elevated CO2 and carbon addition on N2 fixation by biological soil crusts and free-living bacteria in an intact Mojave Desert ecosystem. Soil Biology and Biochemistry, 35:643-649. Billings, S. A., S. Zitzer, H. Weatherly, S. M. Schaeffer, T. Charlet, J. Arnone, and R. D. Evans. 2003. Effects of elevated CO2 on green tissue and litter quality and quantity in an intact Mojave Desert ecosystem. Global Change Biology, 9:729-735. Schaeffer, S. M., S. A. Billings, and R. D. Evans. 2003. Responses of soil nitrogen dynamics in a Mojave Desert ecosystem to manipulations in soil carbon and nitrogen availability. Oecologia, 134:547-553. Billings, S. A., S. M. Schaeffer, and R. D. Evans. 2002. Trace N gas losses and N mineralization in an intact Mojave Desert ecosystem with elevated CO2. Soil Biology and Biochemistry, 34:1777-1784. Billings, S. A., S. M. Schaeffer, S. Zitzer, T. Charlet, S. D. Smith, and R. D. Evans. 2002. Alterations of nitrogen dynamics under elevated CO2 in an intact Mojave Desert ecosystem: evidence from δ15N. Oecologia, 131:463-467. Cooper, D. I., W. E. Eichinger, J. Kao, L. Hipps, J. Reisner, S. Smith, S. M. Schaeffer, and D. G. Williams. 2000. Spatial and temporal properties of water vapor and flux over a riparian canopy. Agricultural and Forest Meteorology, 105:161-184. Goodrich, D. C., R. Scott, J. Qi, B. Goff, C. L. Inkrich, M. S. Moran, D. G. Williams, S. M. Schaeffer, K. Snyder, R. McNish, T. Maddock, and D. Pool. 2000. Seasonal estimates of riparian evapotranspiration using remote and in situ measurements. Agricultural and Forest Meteorology, 105:281-309. Schaeffer, S. M., D. G. Williams, and D. G. Goodrich. 2000. Transpiration of cottonwood/willow forest estimated from sap flux. Agricultural and Forest Meteorology, 105:257-270. Book chapters or books McKinney, M., D. G. Hayes, S. M. Schaeffer, A. L. Wszelaki, and M. Velandia. 2025. Plastic pollution: challenges and strategies. In press, Handbook of Circular Bioeconomy, J. Zhuang, Ed. Hayes, D. G., M. B. Anunciado, J. M. DeBruyn, S. Bandopadhyay, S. M. Schaeffer, M. English*, S. Ghimire, C. Miles, M. Flury, and H. Y. Sintim. 2019. Biodegradable Plastic Mulch Films for Sustainable Specialty Crop Production. Polymers for Agri-Food Applications, Gutierrez, T.J. (Editor), Berlin, Springer Nature, pp. 183-213. Keenan, S. W., C. Widga, J. M. DeBruyn, and S. M. Schaeffer. 2018. Nutrient hotspots through time: a field guide to modern and fossil taphonomy in east Tennessee. Geology at Every Scale: Field Excursions for the 2018 GSA Southeastern Meeting in Knoxville, TN, Engel, A.S. and Hatcher, R.D. Jr, eds. Lajtha , K., V. L. Bailey, K. McFarlane, K. Paustian, D. Bachelet, R . Abramoff, D. Angers, S. A. Billings, D. Cerkowniak, Y. G. Dialynas, A. Finzi, N. H. F. French, S. Frey, N. P. Gurwick, J. Harden, J. M. F. Johnson, K. Johnson, J. Lehmann, S. Liu, B. McConkey, U. Mishra, S. Ollinger, D. Paré, F. Paz Pellat , D. deB. Richter,, S. M. Schaeffer, and J. Schimel, C. Shaw, J. Tang, K. Todd-Brown, C. Trettin, M. Waldrop, T. Whitman, and K. Wickland. 2018. Chapter 12: Soils. Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report, U.S. Global Change Research Program, Washington, DC, USA, pp. 469-506. Pendall, E., D. Bachelet, R. T. Conant, B. El Masri, L. B. Flanagan, A. K. Knapp, J. Liu, S. Liu, and S. M. Schaeffer. 2018. Chapter 10: Grasslands. Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report, U.S. Global Change Research Program, Washington, DC, USA, pp. 399-427. Bulletins, reports, circulars, pamphlets, factsheets English, M.*, S. M. Schaeffer, M. Flury, C. Miles, J. M. DeBruyn, D. G. Hayes, and S. Bandopadhyay. 2016. Soil Carbon and Biodegradable Mulches. Biodegradablemulch.org, Performance and Adoptability of Biodegradable Mulch Report No. SE-2016-2. Flury, M., A. Bary, J. M. DeBruyn, S. M. Schaeffer, H. Sintim, and S. Bandopadhyay. 2015. What is soil quality and how is it measured?. BiodegradableMulch.org. Popular press, trade, UTIA magazine or newsletter articles Coyne, K., Gilmore, A. B.*, and S. M. Schaeffer. 2022. The Incredible Shrinking Polymer. CSA News, 68(1):4-11. DeBruyn, J. M., and S. M. Schaeffer. 2015. Ten tips for NSF Funding. UTIA Office of Sponsored Programs Newsletter. Abstracts from scientific or discipline meetings, papers from conference proceedings Clements, Jacob*, S. M. Schaeffer, D. G. Hayes, Flury, Markus, and M. A. Radosevich. 2025. Determining a Carbon Mass Balance and Active Microbial Degraders of Synthesized, Isotopically Labeled Poly-L-Lactic Acid in Soil Mesocosm Incubations. Soil Science Society of America, Salt Lake City, November 2025. Hayes, D. G., M. Flury, S. M. Schaeffer, S. Sistla, and C. E. Sams. 2025. Do Microplastics in Agricultural Ecosystems Threaten Food Supply?. AAAS Conference, Invited session, Boston, 14 February, Hayes served as moderator, Sams as Organizer; Flury. Schaeffer, and Sistla as presenters; https://aaas.confex.com/aaas/2025/meetingapp.cgi/Session/34024. (invited) Dere, A. L. D., B. Sacardi, J. L. Druhan, J. Wang, N. Blair, L. Welp, K. Deuerling, T. Filley, M. Jimenez-Casteneda, S. M. Schaeffer, I. Noel, A. Stumpf, E. Bauer, J. Haken, A. Goodwell, A. Anders, and P. Kumar. 2024. Agricultural Land Use Impacts On Soil Porewater Geochemistry And Connectivity In The Midwestern U.S. American Geophysical Union Meetings, Wash. D.C.. Filley, T. R., M. Jimenez-Cateneda, J. Sparks, I. Frantel, L. Welp, J. Haken, E. Bauer, S. M. Schaeffer, B. Sacardi, J. Jones, Z. Brecheisen, and P. Kumar. 2024. Investigating the Sub-Seasonal Dynamics of Soil CO2 of an Intensively Managed Agricultural Soil Under Prairie Restoration in the Midwestern U.S. American Geophysical Union Meetings, Wash. D.C.. Gillmore, A. B.*, and S. M. Schaeffer. 2024. Degradation of Agricultural Biodegradable Microplastics in Subsurface Soil. Soil Science Society of America Meetings, San Antonio. Issacs, M.*, Dere, A., and S. M. Schaeffer. 2024. Comparing Microbial Community Function in Intensively Managed Landscapes and Restored Prairies in United States Midwest. American Geophysical Union Meetings, Wash. D.C.. Dhaliwal, J. K., Lussich, F., DelGrosso, S., S. M. Schaeffer, and D. Saha. 2023. Testing Daycent Model Simulations of Cotton Lint Yields and Nitrous Oxide Emissions in No-till Continuous Cotton System with Cover Crops. ASA-CSSA-SSSA International Annual Meeting. Gillmore, A.*, S. A. Sistla, A. F. Astner, D. G. Hayes, and S. M. Schaeffer. 2023. Quantitative 1H-NMR spectroscopy to measure PBAT microplastics in soil. American Geophysical Union International Annual Meeting. Gillmore, A.*, S. A. Sistla, and S. M. Schaeffer. 2023. Biodegradable Plastic Disintegration in Agricultural Soil at Two Depths in Mesic and Xeric Climates. ASA-CSSA-SSSA International Annual Meeting. Lussich, F. R., Dhaliwal, J. K., S. Jagadamma, S. M. Schaeffer, Faiia, A., and D. Saha. 2023. Cover Crop Residue Decomposition Exacerbated Soil Oxygen Depletion and Promoted N2o Emissions. ASA-CSSA-SSSA International Annual Meeting. Walker, F. R., N. Adotey, J. M. DeBruyn, L. A. Duncan, J. Lee, A. Nouri, M. A. Radosevich, D. Saha, and S. M. Schaeffer. 2023. Soil Health Changes in Continuous Cotton after 40 years of No-Till and Cover Cropping in west Tennessee. Beltwide Cotton, New Orleans LA. Gillmore, A. B.*, A. F. Astner, D. G. Hayes, and S. M. Schaeffer. 2022. Quantitative 1H-NMR spectroscopy to measure microplastic concentration in agricultural soil over time. 2022 ASA-CSSA-SSSA International Annual Meeting, Baltimore MD. Martin, C.*, and S. M. Schaeffer. 2022. Using bioluminescent bacteria to measure the potential ecotoxicity of non-biodegradable and biodegradable plastic mulch in soil. 2022 ASA-CSSA-SSSA International Annual Meeting, Baltimore MD. Newell, S.*, M. A. Radosevich, J. Lee, S. M. Schaeffer, J. Mason, and B. Ferro. 2022. The Characterization of Dynamic Soil Properties and Their Relation to Soil Organic Carbon in East Tennessee Soils. 2022 Southern Regional Cooperative Soil Survey Conference, Greenville, SC. Schaeffer, S. M. 2022. Impact of Drought on Microbial Decomposition and Nutrient Cycling in Aridland Soils. The 8th International Conference on Drylands, Deserts & Desertification, Learning from Drylands: A global effort towards ecosystem restoration November 27-December 1, 2022 Sede Boqer Campus, Israel. (invited) Duan, N.*, M. A. Radosevich, J. Zhuang, and S. M. Schaeffer. 2021. Exploration of soil viral diversity and its potential to influence biogeochemical cycles under long-term fertilization and cover cropping management. In: Proceeding of American Geophysical Union Annual Meeting, New Orleans, December 13-17, 2021. Fine, A. K.*, M. A. Radosevich, and S. M. Schaeffer. 2021. Spatiotemporal controls on response of soil microbial community carbon allocation patterns to induced viral lysis. Proceedings of 2020 ASA-CSSA-SSSA International Annual Meeting, Salt Lake City, 2021. Gillmore, A. B.*, A. F. Astner, D. G. Hayes, and S. M. Schaeffer. 2021. Degradation rate of biodegradable plastic mulches in an East Tennessee agricultural soil based on field sampling after incorporation. Proceedings of 2020 ASA-CSSA-SSSA International Annual Meeting, Salt Lake City, 2021. Newell, S.*, and S. M. Schaeffer. 2021. The Characterization of Dynamic Soil Properties and Their Relation to Soil Organic Carbon in East Tennessee Soils. Proceedings of 2020 ASA-CSSA-SSSA International Annual Meeting, Salt Lake City, 2021. Corbeil, Karalee*, A. Fine*, M. Davis*, M. A. Radosevich, and S. M. Schaeffer. 2020. Seasonal and cover cropping effects on soil microbial respiration and inorganic N availability. Exhibition of Undergraduate Research and Creative Achievement (EURēCA). Gillmore, Alexis*, A. Astner, D. G. Hayes, and S. M. Schaeffer. 2020. Characterizing Biodegradable Plastic Mulch Fragment Distribution through the Soil Profile in an East Tennessee Agroecosystem. Soil Science Society of America Meeting, Virtual meeting due to covid-19 concerns. Hu, J., J. Konkel, V. Jin, L. Schneider, S. M. Schaeffer, and J. M. DeBruyn. 2020. Long term conservation agricultural management affects abundance and activity of nitrogen cycling microbes. Soil Science Society of America General Meeting, Nov 8-12, 2020 *Virtual due to COVID-19. Ning Duan*, M. A. Radosevich, and S. M. Schaeffer. 2020. Seasonal variation in bacterial community structure under long-term fertilization, tillage, and cover cropping agricultural management. Soil Science Society of America Meeting, Virtual meeting due to covid-19 concerns. Radosevich, M. A., J. Zhuang, S. M. Schaeffer, and J. M. DeBruyn. 2020. Integrating the numerically most abundant lifeforms (viruses) into soil food webs. Proceedings of 2020 ASA-CSSA-SSSA International Annual Meeting, Virtual, November 9-13, 2020. Schaeffer, S. M. 2020. Microbial C utilization and aggregate stability in response to simulated precipitation and drought. W4188 Multistate Meeting, Las Vegas, Nevada. (invited) Bernard, E. C., S. M. Schaeffer, L. S. Taylor, G. Phillips, and J. M. Welker. 2019. High Arctic nematode communities of northwest Greenland. Journal of Nematology, Society of Nematologists Annual Meeting, July 7-10, 2019, Raleigh, NC. Duan, Ning*, A. Fine*, X. Liang, R. Wagner, M. A. Radosevich, and S. M. Schaeffer. 2019. The Response of Soil Viral and Bacterial Functional Diversity to Long-Term Agricultural Management. ASA, CSSA and SSSA International Annual Meetings, San Antonio, TX. Duan, Ning*, M. A. Radosevich, and S. M. Schaeffer. 2019. The Influence of Long-term Agricultural Management on Soil Bacterial and Viral Diversity. American Geophysical Union Fall Meeting, San Francisco, CA. Fine, Aubrey*, C. Wilson, T. Papanicolaou, and S. M. Schaeffer. 2019. Response of Soil Aggregate Stability and Microbial Carbon Use Efficiency to Varying Frequency of Re-Wetting during Incubation of Aggregate Size Fractions. SSSA International Soils Meeting, San Diego, CA. Fine, Aubrey*, M. A. Radosevich, and S. M. Schaeffer. 2019. Soil Structure and Texture Control of Mitomycin C-Induced Viral Lysis. ASA, CSSA and SSSA International Annual Meetings, San Antonio, TX. Hayes, D. G., M. B. Anunciado, A. F. Astner, M. English*, A. L. Wszelaki, J. L. Moore, S. V. Pingali, M. Flury, H. Y. Sintim, J. M. DeBruyn, S. M. Schaeffer, and S. Bandpadhyay. 2019. When Worlds Collide: Relationships Between the Life Cycle of Biodegradable Plastic Mulches and Ecosystems. BioEnvironmental Polymer Society Annual Meeting, Greenville, SC, 5-7 June 2019 (other coauthors: H. M. O'Neill, B.R. Evans, V.S. Urban, C. Miles, S. Ghimire, M. Flury, and H.Y. Sintim). Konkel, J.*, D. D. Tyler, B. G. Kozlowski, and S. M. Schaeffer. 2019. Effects of Conservation Management of Soil Microbial Nitrogen Transformations in Continuous Cotton in West Tennessee. SSSA International Soils Meeting, San Diego, CA. Li, Lidong*, and S. M. Schaeffer. 2019. Contrasting the Fate of 13C Labeled Glucose and Corn Litter Under Short-Term Moisture Pulses and Long-Term Conservation Agricultural Management. SSSA International Soils Meeting, San Diego, CA. Schaeffer, S. M. 2019. Soil microbial dynamics, climate change and management effects on soil carbon retention in agroecosystems. Conference on Black Soil Carbon, Shenyang, China. (invited) Schaeffer, S. M., M. A. Radosevich, N. Duan*, A. Fine*, and X. Liang. 2019. Linking soil virus biodiversity to biogeochemical cycling of carbon and nitrogen in agricultural ecosystems. American Geophysical Union Fall Meeting, San Francisco, CA. Sintim, Henry, S. Bandopadhyay, A. Bary, M. English*, J. M. DeBruyn, S. M. Schaeffer, and M. Flury. 2019. Biodegradable Plastic Mulch Effects on Soil Health. SSSA International Soils Meeting, San Diego, CA. Tayo, M., C. Czimczik, A. Fine*, S. M. Schaeffer, and J. M. Welker. 2019. Impact of long-term warming and wetting on carbon sequestration and nitrogen dynamics in High Arctic tundra soils. American Geophysical Union Fall Meeting, San Francisco, CA. Wagner, R., M. A. Radosevich, S. M. Schaeffer, X. Liang, N. Duan*, and A. Fine*. 2019. Exploring the Relationship between Agricultural Management Practices and Viral Ecology. ASA, CSSA and SSSA International Annual Meetings, San Antonio, TX. Fine, A. K.*, R. Wagner, X. Liang, M. A. Radosevich, and S. M. Schaeffer. 2018. Exploring the relationship between soil viral dynamics and carbon biogeochemical properties in a long term agricultural experiment. American Geophysical Union Meetings, Washington D.C. Li, L.*, and S. M. Schaeffer. 2018. The accumulation of new carbon input in soil under short-term moisture pulses and long-term conservation agricultural management practices. Southeastern Region Geological Society of America Meeting, Knoxville, TN. Ottinger, S. L., S. Jagadamma, J. C. Stier, and S. M. Schaeffer. 2018. Tropical soil health research and extension in the Vaca Forest Reserve, Belize. UTK Summer Research Scholars Symposium, August 30, Knoxville, TN. Ottinger, S. L., S. Jagadamma, S. M. Schaeffer, and J. C. Stier. 2018. Tropical Soil Health and Agricultural Effects in the Vaca Forest Reserve, Belize. ASA-CSSA-CSA Meeting, November 4-7, Baltimore, MD. Pothula, S. K., P. G. Grewal, M. A. Radosevich, S. M. Schaeffer, W. C. Wright, G. Phillips, and E. C. Bernard. 2018. Response of nematode food webs to physical and temperature stress. Journal of Nematology. (invited) Schaeffer, S. M. 2018. Coupled ecosystem carbon and nitrogen cycling in a High Arctic ecosystem are altered by warming and higher rainfall. Southeastern Region Geological Society of America Meeting, Knoxville, TN. Davies, M. L.*, J. Konkel*, J. M. Welker, and S. M. Schaeffer. 2017. Soil moisture and soil temperature variability among three plant communities in a High Arctic Lake Basin. American Geophysical Union Fall Meeting, New Orleans LA. DeBruyn, J. M., S. Bandopadhyay, H. Sintim, M. E. English*, X. Wen, S. M. Schaeffer, M. Flury, K. Bonifer, T. Reynolds, and D. G. Hayes. 2017. Biodegradable plastic agricultural mulches: microbial degradation and implications for soil health. ASA-CCSA-SSSA Annual Meeting, Tampa FL. (invited) English, M. E.*, and S. M. Schaeffer. 2017. The role of biodegradable plastic mulches in soil organic carbon cycling. ASA-CCSA-SSSA Annual Meeting, Tampa, FL. English, M. E.*, S. Bandopadhyay, J. M. DeBruyn, D. G. Hayes, and S. M. Schaeffer. 2017. Temperature sensitivity of biodegradable plastic mulches to microbial decomposition. Southeastern Biogeochemistry Symposium, Athens GA. Fine, A.*, C. G. Wilson, T. Papanicolaou, and S. M. Schaeffer. 2017. Microbially-mediated carbon fluxes vary with landscape position in two erodible, intensively managed agricultural landscapes. American Geophysical Union Fall Meeting, New Orleans, LA. Keenan, S. W., S. M. Schaeffer, and J. M. DeBruyn. 2017. Biogeochemistry of vertebrate decomposition in a forest ecosystem. Southeastern Biogeochemistry Symposium, Athens GA. Keenan, S. W., S. M. Schaeffer, and J. M. DeBruyn. 2017. Soil Biogeochemical Cycling and Stable Isotope Dynamics during Vertebrate Carcass Decomposition. Southeastern Biogeochemistry Symposium, Athens, GA. Keenan, S. W., S. M. Schaeffer, and J. M. DeBruyn. 2017. Stable isotopic composition of vertebrate tissues during decomposition. International Symposium on Environmental Biogeochemistry, Cairns, Australia. Konkel, J.*, J. M. Welker, and S. M. Schaeffer. 2017. Soil greenhouse gas flux, soil moisture, and soil temperature variability among three plant communities from 2015 to 2017 in a High-Arctic lake basin, Northwest Greenland. American Geophysical Union Fall Meeting, New Orleans, LA. Konkel, J.*, V. L. Jin, D. D. Tyler, B. G. Kozlowski, J. M. DeBruyn, and S. M. Schaeffer. 2017. Soil nitrogen dynamics under conservation management in continuous cotton in West Tennessee. ASA-CCSA-SSSA Annual Meeting, Tampa FL. Li, L.*, and S. M. Schaeffer. 2017. Using 13C labeled glucose to determine soil microbial and physical controls of new C incorporation under drying-rewetting cycles and conservation agricultural management. American Geophysical Union Fall Meeting, New Orleans, LA. Schaeffer, S. M., J. Konkel*, and V. L. Jin. 2017. Impact of long-term conservation management on soil microbial N cycling and greenhouse gas emissions in a humid agroecosystem in West Tennessee. American Geophysical Union Fall Meeting, New Orleans, LA. Schaeffer, S. M., J. Konkel*, V. L. Jin, and D. D. Tyler. 2017. Soil greenhouse gas emissions under long-term conservation management in a continuous cotton cropland in West Tennessee. ASA-CCSA-SSSA Annual Meeting, Tampa, FL. (invited) Sintim, H., S. Bandopadhyay, M. E. English*, A. Bary, S. M. Schaeffer, J. M. DeBruyn, and M. Flury. 2017. Biodegradable plastic mulch: impacts on soil quality and degradation in soil and compost. ASA-CCSA-SSSA Annual Meeting, Tampa FL. DeBruyn, J. M., S. Bandopadhyay, H. Sintim, M. English*, X. Wen, S. M. Schaeffer, M. Flury, and D. G. Hayes. 2016. Biodegradable Plastic Agricultural Mulches: Microbial degradation and impacts on soil ecology. China-US Joint Symposium of Environmental Health and Ecological Safety, Yixin, China. (invited) English, M.*, S. Bandopadhyay, D. G. Hayes, J. M. DeBruyn, L. C. Wadsworth, and S. M. Schaeffer. 2016. Temperature sensitivity of biodegradable plastic mulches to microbial decomposition. ASA-CCSA-SSSA Annual Meeting, Phoenix, AZ. Hayes, D. G., L. C. Wadsworth, N. F. Omar, A. L. Wszelaki, J. M. DeBruyn, and S. M. Schaeffer. 2016. Long-Term Impacts of Biodegradable Plastic Mulches for Sustainable Production of Fruits and Vegetables. American Ecological Engineering Society 16th Annual Meeting, Knoxville, 7 June 2016. McKnight, J. Y.*, C. Harden, and S. M. Schaeffer. 2016. Carbon-cycle effects of differences in soil moisture and soil extracellular enzyme activity at sites representing different land-use histories in high-elevation Ecuadorian páramo landscapes. American Geophysical Union Meeting, San Francisco CA. McKnight, J. Y.*, S. M. Schaeffer, D. D. Tyler, and B. G. Kozlowski. 2016. Effects of conservation agricultural practices on soil nitrogen transformations and microbial activity in cotton crops from a long-term experiment in West Tennessee. ASA-CSSA-SSSA Annual Meeting, Phoenix, AZ. Paradis, C. J., N. Mahmoudi, S. Jagadamma, D. A. Driver, K. B. O'Dell, S. M. Schaeffer, and T. C. Hazen. 2016. Response of soil respiration and microbial community structure to simulated heavy precipitation and drought in a Lexington silt loam. 16th International Symposium of Microbial Ecology. Montreal, Canada. Aug 21-26. Pendall, E., L. B. Flanagan, S. Liu, S. DelGrosso, B. ElMaseri, J. Liu, R. T. Conant, and S. M. Schaeffer. 2016. Resilience and Vulnerability of Carbon Cycling in North American Grasslands. American Geophysical Union Meeting, San Francisco CA. Schaeffer, S. M. 2016. Response of coupled C and N biogeochemical cycles to land management and climate change. China-US Center for Soil Productivity and Environmental Conservation (SPEC), Shenyang, China. (invited) Sintim H., M. English*, A. Barry, S. M. Schaeffer, M. Saglam, and M. Flury. 2016. Soil microclimate and degradation of biodegradable plastic mulches. ASA-CSSA-SSSA Annual Meeting, Phoenix, AZ. Sintim, H., S. Bandopadhyay, S. Ghimire, M. Flury, A. Bary, S. M. Schaeffer, J. M. DeBruyn, C. Miles, and D. Ingles. 2016. Soil Quality and Colloid Transport under Biodegradable Mulches. EGU General Assembly 2016, EGU2016-18410, Geophysical Research Abstracts Vol. 18. DeBruyn, J. M., D. A. Bevard, D. G. J. Mann, H. Baxter, M. Mazarei, J. Y. McKnight*, S. M. Schaeffer, and C. N. Stewart, Jr.. 2015. Effect of Transgenic Switchgrass Plants Down-Regulating COMT on Soil Chemistry and Microbiology. ASA/CSA/SSSA Meeting, Minneapolis, MN, Nov 15-18, 2015. DeBruyn, J. M., K. L. Cobaugh, and S. M. Schaeffer. 2015. Succession of soil microbial communities below decomposing human cadavers. American Society for Microbiology General Meeting, New Orleans, LA, May 30-Jun 2, 2015. Janegitz, M. C.*, V. Jin, C. A. Rosolem, L. Li*, D. D. Tyler, and S. M. Schaeffer. 2015. Soil acidity amelioration impact in no till system by cover crop and nitrogen application in west Tennessee – USA. ASA/CSA/SSSA Annual Meetings, Minneapolis. McKnight, J.*, E. Klein, J. Welker, and S. M. Schaeffer. 2015. Soil carbon stability and flux along hydrologic gradient in a northern high-Arctic tundra lake basin, Northwest Greenland. American Geophysical Union Meeting, San Francisco. Schaeffer, S. M., H. Sintim, S. Bandopadhyay, S. Ghimre, M. Flury, A. Bary, and J. M. DeBruyn. 2015. Soil Physical Characteristics and Biological Indicators of Soil Quality Under Different Biodegradable Mulches. American Geophysical Union Meeting, San Francisco. Sintim, H., S. Bandopadhyay, S. Ghimire, M. Flury, A. Bary, S. M. Schaeffer, J. M. DeBruyn, C. Miles, and D. Inglis. 2015. Soil Quality, Moisture, and Temperature Evaluation under Different Biodegradable Mulches. ASA/CSA/SSSA Meeting, Minneapolis, MN, Nov 15-18, 2015. Driver, D., K. O'Dell, C. Paradis, N. Mahmoudi, J. Fortney, S. M. Schaeffer, and T. Hazen. 2014. Changes in Microbial Respiration in Response to Severe Weather Events. Geological Society of America Meeting, Vancouver, British Columbia. Manzoni, S., J. P. Schimel, S. M. Schaeffer, G. Katul, T. Katterer, G. Agren, and A. Porporato. 2014. Modeling physiological responses of soil microbes to drought. Ecological Society of America Meeting, Sacramento, California. Stevens, J., S. M. Schaeffer, and J. M. DeBruyn. 2014. Effect of the nitrogen extender Agrotain(TM) on soil nitrogen cycling microbes. American Society for Microbiology, Texas Branch Meeting, New Braunfels, TX, April 3-5, 2014.. Turnbull, T., S. R. Jean-Philippe, and S. M. Schaeffer. 2014. Investigating Above and Below Ground Stressors on Street Trees. Journal of Forestry, 112(1):136. (invited) Wilson, C. S., S. Jagadamma, L. Mbuthia, and S. M. Schaeffer. 2014. Long-Term Impacts of Conservation Tillage, Cover Cropping, and Nitrogen Application on Carbon Storage Potential Under Cotton Production in West Tennessee. Soil Society of America Meeting, Long Beach, California. Cobaugh, K., J. M. DeBruyn, and S. M. Schaeffer. 2013. Soil Microbial Community Succession During Cadaver Decomposition. Soil Science Society of America Meetings, Tampa, Florida. Dowdy, K. L., S. A. Sistla, K. M. Buckeridge, J. P. Schimel, and S. M. Schaeffer. 2013. Greenland soil bacteria & biogeochemistry: a vegetation cover proxy for climate warming effects. American Geophysical Union Meeting, San Francisco. Manzoni, S., G. G. Katul, A. M. Porporato, S. M. Schaeffer, and J. P. Schimel. 2013. Modeling physiological responses of soil microbes to drought. American Geophysical Union Meeting, San Francisco. Mbuthia, L. W., V. Acosta-Martinez, J. M. DeBruyn, S. M. Schaeffer, M. Mpheshea, F. R. Walker, and N. S. Eash. 2013. Microbial Community Composition, Structure and Activity after Long Term (31 years) of Conservation Tillage Under Continuous Cotton Production in West Tennessee. Proceedings Soil Science Society of America Annual Meeting, Tampa, FL. November 3-6, 2013. Mpheshea, M., L. Mbuthia, D. O'Dell, I. Cuvaca, S. M. Schaeffer, J. M. DeBruyn, F. R. Walker, and N. S. Eash. 2013. Tillage, nitrogen, and cover crop effects on N-cycling bacteria under cotton production in West Tennessee. Soil Science Society of America Annual Meetings, Tampa, Florida. Reichert, B., S. R. Jean-Philippe, and S. M. Schaeffer. 2013. Investigating residual forest dynamics in residential areas. Society of American Forestry, 2013 Annual Meeting, October 23-27, North Charleston, South Carolina. Schaeffer, S. M., J. P. Schimel, and J. M. Welker. 2013. Coupled soil C and N processes in a High Arctic ecosystem are altered by long-term experimental warming and higher rainfall. CLIMMANI/INTERFACE, Mikulov, Czech Republic. (invited) Schaeffer, S. M., J. P. Schimel, and J. M. Welker. 2013. Coupled ecosystem carbon and nutrient cycling in a High Arctic ecosystem are altered by long-term experimental warming and higher rainfall. American Geophysical Union Meeting, San Francisco. Turnbull, T., S. R. Jean-Philippe, and S. M. Schaeffer. 2013. Investigating above and below ground stressors in street trees. Society of America Foresters, 2013 Annual Meeting, October 23-27, North Charleston, South Carolina. Buckeridge, K. M., S. M. Schaeffer, A. Baron, M. C. Mack, E. A. Schuur, and J. P. Schimel. 2012. Soil nutrient processes during spring thaw along a thermokarst recovery chronosequence. American Geophysical Union Meeting, San Francisco. Fawaz, M., J. M. DeBruyn, C. DeLay, S. M. Schaeffer, and M. Radosevich. 2012. Aggregate scale distribution and cultivation of Gemmatimonadetes from agricultural soil. ISME 14 Meeting, Copenhagen, Denmark. Schaeffer, S. M., C. M. Boot, C. S. Carbone, D. Roux-Micholett, and J. P. Schimel. 2011. Seasonal drought, microbial threshold responses, and biogeochemical cycles in Mediterranean ecosystems. Ecological Society of America Meeting, Austin. (invited) Schimel, J. P., C. M. Boot, C. Lawrence, X. Li, D. Roux-Michollett, S. M. Schaeffer, and M. Wetterstedt. 2011. Effects of drying and rewetting cycles on microbial community composition and C and N mineralization. Ecological Society of America Meeting, Austin. (invited) Boot, C. M., S. M. Schaeffer, and J. S. Schimel. 2010. Composition of organic matter in the Arctic. State of the Arctic Conference, Miami. Boot, C. M., S. M. Schaeffer, M. S. Carbone, D. Roux-Micholett, C. J. Still, and J. P. Schimel. 2010. Dynamic Response of Forest Litter and Mineral Soil to Pulsed Water Additions. American Geophysical Union Meeting, San Francisco. Schaeffer, S. M., J. Belnap, S. Ziegler, and R. D. Evans. 2010. δ13C of PLFA biomarkers and δ15N pool dilution reveal differences in soil C and N cycling following cheatgrass invasion in adjacent C3 and C4 native plant communities. ISOECOL meeting, Fairbanks. Schaeffer, S. M., S. A. Sistla, C. M. Boot, and J. P. Schimel. 2010. Microbial community response to freezing in two Arctic tundra soil types. State of the Arctic Conference, Miami. Schaeffer, S. M., S. A. Sistla, C. M. Boot, D. Roux-Micholett, and J. P. Schimel. 2010. Effect of Speed and Intensity of Freezing on Microbial C and N Cycling in Two Arctic Tundra Soils. American Geophysical Union Meeting, San Francisco. Sistla, S. A., S. M. Schaeffer, and J. S. Schimel. 2010. Exploring the impacts of warming on Arctic soils. State of the Arctic Conference, Miami. Stills, A., M. Lupascu, C. I. Czimczik, E. D. Sharp, J. M. Welker, and S. M. Schaeffer. 2010. Nitrous oxide production and emission in high arctic soils of NW Greenland. American Geophysical Union Meeting, San Francisco. Hayes, D. G., M. Flury, S. M. Schaeffer, S. Sistla, and C. E. Sams. 2025. Do Microplastics in Agricultural Ecosystems Threaten Food Supply?. AAAS Conference, Invited session, Boston, 14 February, Hayes served as moderator, Sams as Organizer; Flury. Schaeffer, and Sistla as presenters; https://aaas.confex.com/aaas/2025/meetingapp.cgi/Session/34024. (invited) Schaeffer, S. M. 2022. Impact of Drought on Microbial Decomposition and Nutrient Cycling in Aridland Soils. The 8th International Conference on Drylands, Deserts & Desertification, Learning from Drylands: A global effort towards ecosystem restoration November 27-December 1, 2022 Sede Boqer Campus, Israel. (invited) Schaeffer, S. M. 2020. Microbial C utilization and aggregate stability in response to simulated precipitation and drought. W4188 Multistate Meeting, Las Vegas, Nevada. (invited) Schaeffer, S. M. 2019. Soil microbial dynamics, climate change and management effects on soil carbon retention in agroecosystems. Conference on Black Soil Carbon, Shenyang, China. (invited) Pothula, S. K., P. G. Grewal, M. A. Radosevich, S. M. Schaeffer, W. C. Wright, G. Phillips, and E. C. Bernard. 2018. Response of nematode food webs to physical and temperature stress. Journal of Nematology. (invited) DeBruyn, J. M., S. Bandopadhyay, H. Sintim, M. E. English*, X. Wen, S. M. Schaeffer, M. Flury, K. Bonifer, T. Reynolds, and D. G. Hayes. 2017. Biodegradable plastic agricultural mulches: microbial degradation and implications for soil health. ASA-CCSA-SSSA Annual Meeting, Tampa FL. (invited) Schaeffer, S. M., J. Konkel*, V. L. Jin, and D. D. Tyler. 2017. Soil greenhouse gas emissions under long-term conservation management in a continuous cotton cropland in West Tennessee. ASA-CCSA-SSSA Annual Meeting, Tampa, FL. (invited) DeBruyn, J. M., S. Bandopadhyay, H. Sintim, M. English*, X. Wen, S. M. Schaeffer, M. Flury, and D. G. Hayes. 2016. Biodegradable Plastic Agricultural Mulches: Microbial degradation and impacts on soil ecology. China-US Joint Symposium of Environmental Health and Ecological Safety, Yixin, China. (invited) Schaeffer, S. M. 2016. Response of coupled C and N biogeochemical cycles to land management and climate change. China-US Center for Soil Productivity and Environmental Conservation (SPEC), Shenyang, China. (invited) Turnbull, T., S. R. Jean-Philippe, and S. M. Schaeffer. 2014. Investigating Above and Below Ground Stressors on Street Trees. Journal of Forestry, 112(1):136. (invited) Schaeffer, S. M., J. P. Schimel, and J. M. Welker. 2013. Coupled soil C and N processes in a High Arctic ecosystem are altered by long-term experimental warming and higher rainfall. CLIMMANI/INTERFACE, Mikulov, Czech Republic. (invited) Schaeffer, S. M., C. M. Boot, C. S. Carbone, D. Roux-Micholett, and J. P. Schimel. 2011. Seasonal drought, microbial threshold responses, and biogeochemical cycles in Mediterranean ecosystems. Ecological Society of America Meeting, Austin. (invited) Schimel, J. P., C. M. Boot, C. Lawrence, X. Li, D. Roux-Michollett, S. M. Schaeffer, and M. Wetterstedt. 2011. Effects of drying and rewetting cycles on microbial community composition and C and N mineralization. Ecological Society of America Meeting, Austin. (invited) Theses/Dissertations completed by directed students Isaacs, Morgan* 2025. Microbial Community Structure and Function in Intensively Managed Landscapes Compared to Restored Prairies. M.S. Thesis. Martin, C.* 2023. The Impacts of Tilled-in Biodegradable Plastic Mulch on Soil Microbial Communities. M.S. Thesis. Newell, S.* 2022. The characterization of dynamic soil properties and their relation to soil organic carbon in East Tennessee soils. M.S. Thesis. Newell, *S. 2022. The Characterization of Dynamic Soil Properties and Their Relation to Soil Organic Carbon in East Tennessee Soils. English, M.* 2019. The role of biodegradable plastic mulches in soil organic carbon cycling. M.S. Thesis. Wilson, C.* 2015. Long-term impacts of conservation management practices on soil carbon storage, stability, and utilization under cotton production in West Tennessee. M.S. Thesis. Turnbull, T., S. R. Jean-Philippe, P. E. Wiseman, D. S. Buckley, S. M. Schaeffer, and R. C. Albright. 2014. A Comprehensive Street Tree and Soil Study along Roadways in Oak Ridge, Tennessee. M.S. Thesis. Gilmore, A. B.* 2024. Effects of climate, depth, and exposure history on the degradation of biodegradable plastic mulch fragments in soil under field-relevant conditions. Ph.D. Dissertation. Fine, A. K.* 2022. Water availability as a cross-scale driver of microbial functions and free viral abundance in soil. Ph.D. Dissertation. Duan, N.* 2021. Response of soil viral and microbial functional diversity to long-term agricultural management in Jackson, West Tennessee. Ph.D. Dissertation. Li, L.* 2018. The accumulation of new carbon input and microbial residues soil under long-term conservation agricultural management practices. Ph.D. Dissertation. |