For two years starting in 1992, Guervitch worked at the National Science Foundation before returning to Stony Brook where she was promoted to professor in 2000.
Her research on grasses[4][5] perennial plants,[6] and trees[7][8] relied on a combination of experimental manipulations and observation data.
[15] Gurevitch also considered how habitats in marine and terrestrial biomes could be altered by Stratospheric aerosol injection[16] which was covered by the popular press when the paper was published in 2021.
[20][19] Gurevitch has subsequently applied meta-analysis to a range of topics including soil ecosystems and their response to warming,[21] interactions between competition and predation,[22] and biological invasions.
[23] In a 2018 paper, she reviewed advances made in the field since it first became relevant to medical and social science research in the 1970s.