Dr. Emma J. Rosi

Aquatic Ecologist | PhD, University of Georgia

Expertise
freshwater, invasive species, human impacts

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Emma Rosi advanced 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 directed the Baltimore Ecosystem Study (BES), a National Science Foundation Long Term Ecological Research site. As part of BES, Rosi explored the role that failing wastewater infrastructure plays in polluting streams and creating antibiotic-resistant microbes. She also revealed 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-led 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, is a Fellow of the Society for Freshwater Science and has conducted research on the role of emerging contaminants shaping these systems.  Rosi served on the  US Environmental Protection Agency’s Science Advisory Board and her research has implications for our understanding of anthropogenic stressors on freshwater ecosystems.

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Organic matter and nutrient inputs from large wildlife influence ecosystem function in the Mara River, Africa
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): 2558-74. doi:10.1002/ecy.2509.
Organic matter loading by hippopotami causes subsidy overload resulting in downstream hypoxia and fish kills
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.
Urban stream microbial communities show resistance to pharmaceutical exposure
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.
Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure
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.
Using the raz-rru method to examine linkages between substrate, biofilm colonisation and stream metabolism in open-canopy streams
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): 1610-24. doi:10.1111/fwb.13190.
Defining Extreme Events: A Cross-Disciplinary Review
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): 441-55. doi:10.1002/2017EF000686.
Water Flow and Biofilm Cover Influence Environmental DNA Detection in Recirculating Streams
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: 8530-37. doi:10.1021/acs.est.8b01822.
A diverse suite of pharmaceuticals contaminates stream and riparian food webs
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.
Give and Take: A Watershed Acid Rain Mitigation Experiment Increases Baseflow Nitrogen Retention but Increases Stormflow Nitrogen Export
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): 13155-65. doi:10.1021/acs.est.8b03553.
High mortality in aquatic predators of mosquito larvae caused by exposure to insect repellent
Almeida, Rafael M., Barbara A. Han, Alexander J. Reisinger, Catherine Kagemann, and Emma J. Rosi. 2018. “High Mortality in Aquatic Predators of Mosquito Larvae Caused by Exposure to Insect Repellent”. Biology Letters 14 (10): 20180526. doi:10.1098/rsbl.2018.0526.
Occurrence, leaching, and degradation of Cry1Ab protein from transgenic maize detritus in agricultural streams
Griffiths, N.A., J.L. Tank, Todd V. Royer, Emma J. Rosi, Arial Shogren, T.C. Frauendorf, and M.R. Whiles. 2017. “Occurrence, Leaching, and Degradation of Cry1Ab Protein from Transgenic Maize Detritus in Agricultural Streams”. Science of The Total Environment 592: 97-105. doi:10.1016/j.scitotenv.2017.03.065.
Partitioning assimilatory nitrogen uptake in streams: an analysis of stable isotope tracer additions across continents
Tank, Jennifer L., E. Marti, T. Riis, D. von Schiller, Alexander J. Reisinger, Walter K. Dodds, M.R. Whiles, et al. 2017. “Partitioning Assimilatory Nitrogen Uptake in Streams: An Analysis of Stable Isotope Tracer Additions across Continents”. Ecological Monographs 88 (1): 120-38. doi:10.1002/ecm.1280.
Pharmaceuticals and personal care products (PPCPs) are ecological disrupting compounds (EcoDC)
Richmond, Erinn K., Michael Grace, John J. Kelly, Alexander J. Reisinger, Emma J. Rosi, and David M. Walters. 2017. “Pharmaceuticals and Personal Care Products (PPCPs) Are Ecological Disrupting Compounds (EcoDC)”. Elem Sci Anth 5: 66. doi:10.1525/elementa.252.
Recovery and resilience of urban stream metabolism following Superstorm Sandy and other floods
Reisinger, Alexander J., Emma J. Rosi, Heather A. Bechtold, Thomas R. Doody, Sujay S. Kaushal, and Peter M. Groffman. 2017. “Recovery and Resilience of Urban Stream Metabolism Following Superstorm Sandy and Other Floods”. Ecosphere 8 (4): e01776. doi:10.1002/ecs2.1776.
Annual mass drownings of the Serengeti wildebeest migration influence nutrient cycling and storage in the Mara River
Subalusky, Amanda L., Christopher L. Dutton, Emma J. Rosi, and D.M. Post. 2017. “Annual Mass Drownings of the Serengeti Wildebeest Migration Influence Nutrient Cycling and Storage in the Mara River”. Proceedings of the National Academy of Sciences 114 (29): 7647-52. doi:10.1073/pnas.1614778114.
Scaling Dissolved Nutrient Removal in River Networks: A Comparative Modeling Investigation
Ye, Sheng, Alexander J. Reisinger, J.L. Tank, M. A. Baker, Robert O. Hall, Emma J. Rosi, and M. Sivapalan. 2017. “Scaling Dissolved Nutrient Removal in River Networks: A Comparative Modeling Investigation”. Water Resources Research 53 (11233463551412101): 9623-41. doi:10.1002/2017WR020858.
Drivers of nitrogen transfer in stream food webs across continents
Norman, B. M., M.R. Whiles, S. M. Collins, A.S. Flecker, Stephen K. Hamilton, S.L. Johnson, Emma J. Rosi, et al. 2017. “Drivers of Nitrogen Transfer in Stream Food Webs across Continents”. Ecology 98 (12): 3044-55. doi:10.1002/ecy.2009.
Synthetic chemicals as agents of global change
Bernhardt, Emily S., Emma J. Rosi, and M.O. Gessner. 2017. “Synthetic Chemicals As Agents of Global Change”. Frontiers in Ecology and the Environment 15 (2): 84-90. doi:10.1002/fee.1450.
Dynamic heterogeneity: a framework to promote ecological integration and hypothesis generation in urban systems
Pickett, Steward T. A., Mary L. Cadenasso, Emma J. Rosi, Kenneth T Belt, Peter M. Groffman, Morgan Grove, E. Irwin, et al. 2017. “Dynamic Heterogeneity: A Framework to Promote Ecological Integration and Hypothesis Generation in Urban Systems”. Urban Ecosystems 20 (1): 1-14. doi:10.1007/s11252-016-0574-9.
Extreme floods increase CO <sub>2</sub> outgassing from a large Amazonian river
Almeida, Rafael M., F.S. Pacheco, Nathan Barros, Emma J. Rosi, and Fábio Roland. 2017. “Extreme Floods Increase CO <sub>2< sub> Outgassing from a Large Amazonian River”. Limnology and Oceanography 62 (3): 989-99. doi:10.1002/lno.10480.