Skip to main content

Dr. Emma J. Rosi

Aquatic Ecologist | PhD, University of Georgia

freshwater, invasive species, human impacts

845 677-7600 x232

Emma Rosi is advancing our understanding of how land use, urbanization, and climate change shape freshwater ecosystems, with projects exploring environmental contaminants such as pharmaceutical and personal care products, aging wastewater infrastructure, environmental implications of agricultural GMOs, and the effects of dams.

Rosi directs the Baltimore Ecosystem Study (BES), a National Science Foundation Long Term Ecological Research site. As part of BES, Rosi is exploring the role that failing wastewater infrastructure plays in polluting streams and creating antibiotic-resistant ‘superbugs’. She is also revealing how prescription and illicit drugs that enter our waterways impact freshwater quality and aquatic life.

In addition to her work on human-driven threats to freshwaters, Rosi co-leads a long-term project, in collaboration with Yale University, investigating how wildebeest and hippos shape the food web in the Kenyan reach of Africa’s Mara River.

Rosi is a leader in the field of freshwater science and has conducted research on the role of  emerging contaminants shaping these systems.  Rosi serves on the  US Environmental Protection Agency’s Science Advisory Board and her research has implications for our understanding of anthropogenic stressors on freshwater ecosystems. 
Brandão-Dias, Pedro F. P., Emma J. Rosi, Arial Shogren, Jennifer L. Tank, David T. Fischer, and Scott P. Egan. 2021. “Fate Of Environmental Proteins (Eproteins) From Genetically Engineered Crops In Streams Is Controlled By Water Ph And Ecosystem Metabolism”. Environmental Science & Technology 55 (8). American Chemical Society (ACS): 4688-4697. doi:10.1021/acs.est.0c05731.
Reisinger, Alexander J., Lindsey S. Reisinger, Erinn K. Richmond, and Emma J. Rosi. 2021. “Exposure To A Common Antidepressant Alters Crayfish Behavior And Has Potential Subsequent Ecosystem Impacts”. Ecosphere 12 (6). Wiley. doi:10.1002/ecs2.3527.
Likens, Gene E., Donald C. Buso, Emily S. Bernhardt, and Emma J. Rosi. 2021. “A Century Of Change: Reconstructing The Biogeochemical History Of Hubbard Brook”. Hydrological Processes 35 (6). Wiley. doi:10.1002/hyp.14256.
Fork, M.L., Jerker Fick, Alexander J. Reisinger, and Emma J. Rosi. 2021. “Dosing The Coast: Leaking Sewage Infrastructure Delivers Large Annual Doses And Dynamic Mixtures Of Pharmaceuticals To Urban Rivers”. Environmental Science & Technology 55 (17). American Chemical Society (ACS): 11637-11645. doi:10.1021/acs.est.1c00379.
Plum, Cami, Stephen K. Hamilton, Rebekah Henry, David McCarthy, Emma J. Rosi, and Michael Grace. (2019) 2021. “Pharmaceutical Transport And Transformation In Trapa Natans Beds”. Final Reports Of The Tibor T. Polgar Fellowship Program, 2019.
Dutton, Christopher L., Amanda L. Subalusky, Alvaro Sanchez, Sylvie Estrela, Nanxi Lu, Stephen K. Hamilton, Laban Njoroge, Emma J. Rosi, and David M. Post. 2021. “The Meta-Gut: Community Coalescence Of Animal Gut And Environmental Microbiomes”. Scientific Reports 11 (1). Springer Science and Business Media LLC. doi:10.1038/s41598-021-02349-1.
Frauendorf, TC, Amanda L. Subalusky, CL Dutton, Stephen K. Hamilton, FO Masese, Emma J. Rosi, GA Singer, and DM Post. (NOV) 2021. “Animal Legacies Lost And Found In River Ecosystems”. Environmental Research Letters 16 (11). doi:10.1088/1748-9326/ac2cb0.
Campbell, John L., Lindsey E. Rustad, Scott W. Bailey, Emily S. Bernhardt, Charles T. Driscoll, Mark B. Green, Peter M. Groffman, et al. 2021. “Watershed Studies At The Hubbard Brook Experimental Forest: Building On A Long Legacy Of Research With New Approaches And Sources Of Data”. Hydrological Processes 35 (1). Wiley. doi:10.1002/hyp.14016.
Reisinger, Alexander J., Jennifer L. Tank, Robert O. Hall, Emma J. Rosi, Michelle A. Baker, and Laurel Genzoli. 2021. “Water Column Contributions To The Metabolism And Nutrient Dynamics Of Mid-Sized Rivers”. Biogeochemistry 153 (1). Springer Science and Business Media LLC: 67-84. doi:10.1007/s10533-021-00768-w.
Dutton, Christopher L., Amanda L. Subalusky, Stephen K. Hamilton, Ella C. Bayer, Laban Njoroge, Emma J. Rosi, and David M. Post. 2020. “Alternative Biogeochemical States Of River Pools Mediated By Hippo Use And Flow Variability”. Ecosystems. Springer Science and Business Media LLC. doi:10.1007/s10021-020-00518-3.
Robson, Stephanie V., Emma J. Rosi, Erinn K. Richmond, and Michael Grace. 2020. “Environmental Concentrations Of Pharmaceuticals Alter Metabolism, Denitrification, And Diatom Assemblages In Artificial Streams”. Freshwater Science 39 (2). University of Chicago Press: 256-267. doi:10.1086/708893.
Almeida, R. M., Stephen K. Hamilton, Emma J. Rosi, N. Barros, C. R. C. Doria, A. S. Flecker, A. S. Fleischmann, A. J. Reisinger, and F. Roland. (Jul) 2020. “Hydropeaking Operations Of Two Run-Of-River Mega-Dams Alter Downstream Hydrology Of The Largest Amazon Tributary”. Frontiers In Environmental Science 8.
Green, M. B., L. H. Pardo, S. W. Bailey, J. L. Campbell, W. H. McDowell, E. S. Bernhardt, and Emma J. Rosi. 2020. “Predicting High-Frequency Variation In Stream Solute Concentrations With Water Quality Sensors And Machine Learning”. Hydrological Processes.
Ogata, E. M., M. A. Baker, Emma J. Rosi, T. B. Smart, D. Long, and Z. T. Aanderud. (Oct) 2020. “Nutrients And Pharmaceuticals Structure Bacterial Core Communities In Urban And Montane Stream Biofilms”. Frontiers In Microbiology 11.
Pickett, Steward T. A., M. L. Cadenasso, M. E. Baker, L. E. Band, C. G. Boone, G. L. Buckley, Peter M. Groffman, et al. (Apr) 2020. “Theoretical Perspectives Of The Baltimore Ecosystem Study: Conceptual Evolution In A Social-Ecological Research Project”. Bioscience 70 (4): 297-314+.
Kelso, Julia E., Emma J. Rosi, and Michelle A. Baker. 2020. “Towards More Realistic Estimates Of Dom Decay In Streams: Incubation Methods, Light, And Non-Additive Effects”. Freshwater Science 39 (3). University of Chicago Press: 559-575. doi:10.1086/710218.
Pickett, Steward T. A., Morgan Grove, Shannon L. LaDeau, Emma J. Rosi, and Mary L. Cadenasso. 2020. “Urban Ecology As An Integrative Science And Practice.”. In Urban Ecology: Its Nature And Challenges, 122-143. CABI. doi:10.1079/9781789242607.0122.
Subalusky, Amanda L., Christopher L. Dutton, Emma J. Rosi, Linda M. Puth, and David M. Post. 2020. “A River Of Bones: Wildebeest Skeletons Leave A Legacy Of Mass Mortality In The Mara River, Kenya”. Frontiers In Ecology And Evolution 8. Frontiers Media SA. doi:10.3389/fevo.2020.00031.
Walters, D. M., W.F. Cross, T.A. Kennedy, C.V. Baxter, R.O. Hall, and Emma J. Rosi. 2020. “Food Web Controls On Mercury Fluxes And Fate In The Colorado River, Grand Canyon”. Science Advances 6 (20). American Association for the Advancement of Science (AAAS): eaaz4880. doi:10.1126/sciadv.aaz4880.
Fischhoff, Ilya R., Tao Huang, Stephen K. Hamilton, Barbara A. Han, Shannon L. LaDeau, Richard S. Ostfeld, Emma J. Rosi, and Christopher T. Solomon. 2020. “Parasite And Pathogen Effects On Ecosystem Processes: A Quantitative Review”. Ecosphere 11 (5). Wiley. doi:10.1002/ecs2.3057.

Current Projects