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Draft:Sarah E. Evans

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Sarah E. Evans
Alma materGrinell College
Colorado State University
Scientific career
InstitutionsMichigan State University
ThesisMicrobial and biogeochemical responses to changing precipitation patterns in grassland ecosystems (2012)
Doctoral advisorMatthew Wallenstein
Ingrid Burke
Websitesaraheevanslab.weebly.com

Sarah E. Evans is a microbial ecologist from the United States and a Red Cedar Distinguished Professor at Michigan State University.[1] She is a member of the Department of Integrative Biology[2] and the Ecology, Evolution, and Behavior program[3], and is Co-Director of the Long Term Ecological Research site at Kellogg Biological Station, where she is based.[4][5]

Education and career

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Evans graduated in 2005 from Grinnell College with a major in Biology and received her Ph.D in Ecology in 2012 from Colorado State University, where she was a student with Matthew Wallenstein and Ingrid Burke.[6] Her dissertation focused on microbial and biogeochemical responses to changing precipitation patterns in grassland ecosystems.[7] She worked as a postdoctoral researcher at University of California, Irvine from 2012-2014 with Steve Allison and Kiona Ogle, where she studied the effects of dispersal on microbial community structure. Evans joined the faculty of Michigan State University in 2014.[6]

Research

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Evans studies how ecological disturbance, such as drought and intense land management, influence the ecosystem function(s) of soil microbial communities.[6] She developed and tested a framework that extended ‘macro’-ecological frameworks of adaptive strategies developed for plants and animals, such as the Competition-Stress tolerator-Ruderal (CSR) triangle and r/K selection theory, to microbes, and used it to show how soil microbial communities respond to altered rainfall patterns.[8] She also examines how historical drought conditions alter microbial community responses to contemporary drought, and has shown that the abundance of these drought-adapted microbes alter ecosystem services, such as soil carbon cycling.[9]

In addition to a focus on drought, Evans’ research has revealed the extent to which intensive agricultural management practices, such as excess nitrogen fertilization, influence beneficial microbial ecosystem services, including non-symbiotic nitrogen fixation and soil carbon cycling.[10]

Evans’ work has also demonstrated the importance of overland dispersal of microbes on plant-microbe community assembly.[11] Her work in the Namb desert showed that fog transports diverse microbial communities from the ocean for 50km inland, affecting the types and abundances of microbes present on land.[12]

Awards and Honors

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Evans received the Grinnell College Alumni Scholar Award in 2013, which “honors Grinnell alums who have distinguished themselves by their extraordinary contributions of service to the College, their profession, and/or their community”.[13] In 2020 she received the Michigan State University Outstanding Mentor Award for her “impressive commitment to mentoring and her students’ development and well-being”.[14] Evans was named a fellow in the Earth Leadership Program in 2022[15] and was appointed Red Cedar Distinguished Professor at Michigan State University in 2024.[1]

References

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  1. ^ a b "Red Cedar Distinguished Professors at MSU". Michigan State University.
  2. ^ "Integrative Biology Directory". MSU College of Natural Science.
  3. ^ "Core Faculty". MSU Ecology, Evolution, and Behavior.
  4. ^ "Faculty". Kellogg Biological Station.
  5. ^ "KBS Long-term Ecological Research". Kellogg Biological Station.
  6. ^ a b c "The Evans Lab".
  7. ^ "Microbial and biogeochemical responses to changing precipitation patterns in grassland ecosystems". Digital Collections of Colorado.
  8. ^ "Microorganism adaptation to climate change plays major role in ecosystem functions, says Colorado State University researcher". Colorado State University.
  9. ^ Evans, SE; Allison, SD; Hawkes, CV (5 Mar 2022). "Microbes, memory, and moisture: predicting microbial moisture responses and their impact on carbon cycling". Functional Ecology. 36: 1430–1441. doi:10.1111/1365-2435.14034.
  10. ^ "Working together for a better tomorrow: W.K. Kellogg Annual Report 2016-17" (PDF). Kellogg Biological Station.
  11. ^ "Fog is Full of Microbes". The Atlantic.
  12. ^ Evas, SE; Dueker, ME; Logan, JR; Weathers, KC. "The biology of fog: results from coastal Maine and Namib Desert reveal common rivers of fog microbial composition". Science of the Total Environment. 647: 1547–1556. doi:10.1016/j.scitotenv.2018.08.045.
  13. ^ "Grinnell College Alumni Awards". Grinnell College.
  14. ^ "Graduate School Outstanding Mentor Awards". Michigan State University.
  15. ^ "2022 North American Cohort". Earth Leadership Program.