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Stefanie A. Kroll, PhD

Stefanie A. Kroll, PhD

Assistant Research Professor, Department of Biodiversity, Earth & Environmental Science
Watershed Ecology Section Lead, Patrick Center of Environmental Research, ANS
Department of Biodiversity, Earth and Environmental Science


  • PhD, Ecology, State University of New York, College of Environmental Science and Forestry (SUNY-ESF), Syracuse, New York, 2012
  • Master’s equivalent, Ecology, Department of Agronomic Engineering, University of Castilla-La Mancha (UCLM), Albacete, Spain, 2009
  • BS, Environmental and Forest Biology, SUNY-ESF, 2001

Curriculum Vitae:

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Research Interests:

  • Watershed and stream ecology
  • Aquatic macroinvertebrate ecology and as bioindicators
  • Restoration ecology
  • Human stressors on aquatic ecosystems
  • Climate change


Stefanie Kroll is the project science director of the Delaware River Watershed Initiative, a collaboration between over 50 nonprofit groups working in watershed conservation. Kroll has a PhD in ecology from SUNY College of Environmental Science and Forestry in Syracuse, NY. She obtained a master’s-equivalent at the University of Castilla-La Mancha in Albacete, Spain, after working in interpretation and translation, and teaching English for several years. Her focus on aquatic ecosystems is not surprising given that she grew up spending summers fishing and canoeing in the lakes and streams of New York State and surrounding areas. She volunteers with the Raritan Headwaters Association and the Tookany-Tacony-Frankford Watershed Partnership. She also works with Academy of Natural Sciences' Women In Natural Sciences (WINS) program. Previous work includes forest inventory, program support for a nonprofit environmental organization, community assessment of Onondaga Lake and stream surveys throughout Spain. More information is available on her current work at

Selected Publications:

  • Kroll, S.A., U. Malvadkar, M. Campagna, in revision. Land use differentially predicts macroinvertebrate index scores in the Delaware Basin. Short communication,  Ecological Indicators, to be resubmitted January, 2022.
  • Kroll, S.A., H.C. Oakland, A.M. Frohn, 2021. Macroinvertebrate and diatom indicators of ecosystem integrity for setting targets in agricultural BMP restoration. Ecosphere, doi:10.1002/ecs2.3798.
  • Kroll, S.A., H.C. Oakland, 2019. Review of studies documenting the effects of agricultural best management practices on stream ecosystem integrity. Natural Areas Journal 39(1): 58-77.
  • Kroll, S.A., R.J. Horwitz, D.H. Keller, B.W. Sweeney, J.K. Jackson, L.B. Perez, 2019. Large-scale protection and restoration programs aimed at protecting stream ecosystem integrity: The role of science-based goal-setting, monitoring, and data management. Journal of Freshwater Science 38(1): 23-39.
  • Kroll, S.A., N.H. Ringler, J. De las Heras, 2017. Macroinvertebrates on the front lines: projected community response to temperature and precipitation changes in Mediterranean streams. Journal of Freshwater Ecology 32(1): 513-528.
  • Hajek, A.E., P. Tobin, S.A. Kroll, S.J. Long, 2017. Symbionts mediate oviposition behavior in invasive and native woodwasps. Agricultural and Forest Entomology. 20(3): 442-450.
  • Kroll, S.A., E.E. Morris, S.J. Long, A.E. Hajek, 2013. Parasitism of Sirex noctilio by non-sterilizing Deladenus siricidicola in NE North America. Biological Control 67: 203-211.
  • Kroll, S.A., N.H. Ringler, J. De las Heras, J.J. Gómez-Alday, A. Moratalla, R.D. Briggs, 2012. Changes in stream water quality and macroinvertebrate communities in response to flow regulation and inter-basin transfer: The Segura River Basin (SE Spain), Ecohydrology 6(5): 878-888.