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Dr. Emma J. Rosi

Aquatic Ecologist | PhD, 2002, 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 novel and emerging freshwater contaminants and serves on the Ecological Processes and Effects Committee of the US Environmental Protection Agency’s Science Advisory Board. She also sits on the editorial board of the journal Ecosystems and is a reviewer for the National Science Foundation.

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.
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.
Almeida, Rafael M., Stephen K. Hamilton, Emma J. Rosi, João Durval Arantes, Nathan Barros, Gina Boemer, Anderson Gripp, et al. 2019. “Limnological Effects Of A Large Amazonian Run-Of-River Dam On The Main River And Drowned Tributary Valleys”. Scientific Reports 9 (1). Springer Science and Business Media LLC. doi:10.1038/s41598-019-53060-1.
Dutton, Christopher L., Amanda L. Subalusky, Troy D. Hill, Julie C. Aleman, Emma J. Rosi, Kennedy B. Onyango, Kanuni Kanuni, Jenny A. Cousins, A. C. Staver, and D.M. Post. 2019. “A 2000-Year Sediment Record Reveals Rapidly Changing Sedimentation And Land Use Since The 1960S In The Upper Mara-Serengeti Ecosystem”. Science Of The Total Environment 664: 148 - 160. doi:10.1016/j.scitotenv.2019.01.421.
Schoelynck, Jonas, Amanda L. Subalusky, Eric Struyf, Christopher L. Dutton, D. Unzue-Belmonte, Bart Van de Vijver, D.M. Post, Emma J. Rosi, Patrick Meire, and Patrick J. Frings. 2019. “Hippos (Hippopotamus Amphibius): The Animal Silicon Pump”. Science Advances 5 (5): eaav0395. doi:10.1126/sciadv.aav0395.
Richmond, Erinn K., Emma J. Rosi, Alexander J. Reisinger, B. Hanrahan, Ross M. Thompson, and Michael Grace. 2019. “Influences Of The Antidepressant Fluoxetine On Stream Ecosystem Function And Aquatic Insect Emergence At Environmentally Realistic Concentrations”. Journal Of Freshwater Ecology 34 (1): 513 - 531. doi:10.1080/02705060.2019.1629546.
Shogren, Arial, Jennifer L. Tank, Emma J. Rosi, Martha M. Dee, Shannon L. Speir, Diogo Bolster, and Scott P. Egan. 2019. “Transport And Instream Removal Of The Cry1Ab Protein From Genetically Engineered Maize Is Mediated By Biofilms In Experimental Streams”. Plos One 14 (5): e0216481. doi:10.1371/journal.pone.0216481.
Strayer, David L., Christopher T. Solomon, Stuart E. G. Findlay, and Emma J. Rosi. 2018. “Long-Term Research Reveals Multiple Relationships Between The Abundance And Impacts Of A Non-Native Species”. Limnology And Oceanography 64 (S1): S105 - S117. doi:10.1002/lno.11029.
Craig, L. S., J.D. Olden, A.H. Arthington, S.A. Entrekin, Charles P. Hawkins, John J. Kelly, Theodore A. Kennedy, et al. 2018. “Meeting The Challenge Of Interacting Threats In Freshwater Ecosystems: A Call To Scientists And Managers”. Elem Sci Anth 5: 72. doi:
Subalusky, Amanda L., Christopher L. Dutton, Laban Njoroge, Emma J. Rosi, and D.M. Post. 2018. “Organic Matter And Nutrient Inputs From Large Wildlife Influence Ecosystem Function In The Mara River, Africa”. Ecology 99 (11): 2558 - 2574. doi:10.1002/ecy.2509.
Dutton, Christopher L., Amanda L. Subalusky, Stephen K. Hamilton, Emma J. Rosi, and D.M. Post. 2018. “Organic Matter Loading By Hippopotami Causes Subsidy Overload Resulting In Downstream Hypoxia And Fish Kills”. Nature Communications 9 (1). doi:10.1038/s41467-018-04391-6.
Rosi, Emma J., Heather A. Bechtold, D. Snow, M. Rojas, Alexander J. Reisinger, and John J. Kelly. 2018. “Urban Stream Microbial Communities Show Resistance To Pharmaceutical Exposure”. Ecosphere 9 (1): e02041. doi:10.1002/ecs2.2041.
Reisinger, Alexander J., Ellen Woytowitz, Emily Majcher, Emma J. Rosi, Kenneth T Belt, Jonathan M. Duncan, Sujay S. Kaushal, and Peter M. Groffman. 2018. “Changes In Long-Term Water Quality Of Baltimore Streams Are Associated With Both Gray And Green Infrastructure”. Limnology And Oceanography 64 (S1): S60 - S76. doi:10.1002/lno.10947.
Hanrahan, B., Jennifer L. Tank, Arial Shogren, and Emma J. Rosi. 2018. “Using The Raz-Rru Method To Examine Linkages Between Substrate, Biofilm Colonisation And Stream Metabolism In Open-Canopy Streams”. Freshwater Biology 63 (12): 1610 - 1624. doi:10.1111/fwb.13190.
McPhillips, Lauren E., Heejun Chang, Mikhail V. Chester, Y. Depietri, Erin Friedman, Nancy B Grimm, John S Kominoski, et al. 2018. “Defining Extreme Events: A Cross-Disciplinary Review”. Earth's Future 6 (3): 441 - 455. doi:10.1002/2017EF000686.
Shogren, Arial, Jennifer L. Tank, Scott P. Egan, Olivia August, Emma J. Rosi, B. Hanrahan, Mark A. Renshaw, Crysta Gantz, and Diogo Bolster. 2018. “Water Flow And Biofilm Cover Influence Environmental Dna Detection In Recirculating Streams”. Environmental Science & Technology 52: 8530 - 8537. doi:10.1021/acs.est.8b01822.
Richmond, Erinn K., Emma J. Rosi, David M. Walters, Jerker Fick, Stephen K. Hamilton, Tomas Brodin, Anna Sundelin, and Michael Grace. 2018. “A Diverse Suite Of Pharmaceuticals Contaminates Stream And Riparian Food Webs”. Nature Communications 9 (1). doi:10.1038/s41467-018-06822-w.
Marinos, R. E., John L. Campbell, Charles T. Driscoll, Gene E. Likens, William H. McDowell, Emma J. Rosi, Lindsey E. Rustad, and Emily S. Bernhardt. 2018. “Give And Take: A Watershed Acid Rain Mitigation Experiment Increases Baseflow Nitrogen Retention But Increases Stormflow Nitrogen Export”. Environmental Science & Technology 52 (22): 13155 - 13165. doi:10.1021/acs.est.8b03553.

Current Projects