Dr. Emma J. Rosi

Aquatic Ecologist | PhD, University of Georgia

Expertise
freshwater, invasive species, human impacts

845 677-7600 x232

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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. 
 
Decadal-Scale Change in a Large-River Ecosystem
Strayer, David L., Jonathan J. Cole, Stuart E. G. Findlay, David T. Fischer, Jessica A. Gephart, Heather M. Malcom, Michael L. Pace, and Emma J. Rosi-Marshall. 2014. “Decadal-Scale Change in a Large-River Ecosystem”. BioScience 64 (6): 496-510. doi:10.1093/biosci/biu061.
High Diet Overlap between Native Small-Bodied Fishes and Nonnative Fathead Minnow in the Colorado River, Grand Canyon, Arizona
Seegert, Sarah E. Z., Emma J. Rosi-Marshall, Colden V. Baxter, Theodore A. Kennedy, Robert O. Hall, and Wyatt F. Cross. 2014. “High Diet Overlap Between Native Small-Bodied Fishes and Nonnative Fathead Minnow in the Colorado River, Grand Canyon, Arizona”. TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY 143. 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA: TAYLOR & FRANCIS INC: 1072-83. doi:10.1080/00028487.2014.901250.
The hippopotamus conveyor belt: vectors of carbon and nutrients from terrestrial grasslands to aquatic systems in sub-Saharan Africa
Subalusky, Amanda L., Christopher L. Dutton, Emma J. Rosi-Marshall, and D.M. Post. 2014. “The Hippopotamus Conveyor Belt: Vectors of Carbon and Nutrients from Terrestrial Grasslands to Aquatic Systems in Sub-Saharan Africa”. Freshwater Biology 60 (3): 512-25. doi:10.1111/fwb.2015.60.issue-310.1111/fwb.12474.
Modeling priming effects on microbial consumption of dissolved organic carbon in rivers
Hotchkiss, E. R., Robert O. Hall, M. A. Baker, Emma J. Rosi-Marshall, and J.L. Tank. 2014. “Modeling Priming Effects on Microbial Consumption of Dissolved Organic Carbon in Rivers”. Journal of Geophysical Research: Biogeosciences 119 (5): 982-95. doi:10.1002/jgrg.v119.510.1002/2013JG002599.
You are not always what we think you eat: selective assimilation across multiple whole-stream isotopic tracer studies
Dodds, Walter K., S. M. Collins, Stephen K. Hamilton, J.L. Tank, S.L. Johnson, J.R. Webster, Kevin S. Simon, et al. 2014. “You Are Not Always What We Think You Eat: Selective Assimilation across Multiple Whole-Stream Isotopic Tracer Studies”. Ecology 95 (10): 2757-67. doi:10.1890/13-2276.1.
Solute-specific scaling of inorganic nitrogen and phosphorus uptake in streams
Hall, Robert O., M. A. Baker, Emma J. Rosi-Marshall, J.L. Tank, and J.D. Newbold. 2013. “Solute-Specific Scaling of Inorganic Nitrogen and Phosphorus Uptake in Streams”. Biogeosciences 10 (11): 7323-31. doi:10.5194/bg-10-7323-2013.
Triclosan Exposure Increases Triclosan Resistance and Influences Taxonomic Composition of Benthic Bacterial Communities
Drury, Bradley, J. Scott, Emma J. Rosi-Marshall, and John J. Kelly. 2013. “Triclosan Exposure Increases Triclosan Resistance and Influences Taxonomic Composition of Benthic Bacterial Communities”. Environmental Science & Technology, 130725155410004. doi:10.1021/es401919k.
Wastewater Treatment Effluent Reduces the Abundance and Diversity of Benthic Bacterial Communities in Urban and Suburban Rivers
Drury, Bradley, Emma J. Rosi-Marshall, and John J. Kelly. 2013. “Wastewater Treatment Effluent Reduces the Abundance and Diversity of Benthic Bacterial Communities in Urban and Suburban Rivers”. Applied and Environmental Microbiology 79 (6): 1897-1905. doi:10.1128/AEM.03527-12.
Agricultural land use alters the seasonality and magnitude of stream metabolism
Griffiths, N.A., J.L. Tank, Todd V. Royer, Sarah S. Roley, Emma J. Rosi-Marshall, M.R. Whiles, J. J. Beaulieu, and L. T. Johnson. 2013. “Agricultural Land Use Alters the Seasonality and Magnitude of Stream Metabolism”. Limnology and Oceanography 58 (4): 1513-29. doi:10.4319/lo.2013.58.4.1513.
Anticipating Stream Ecosystem Responses to Climate Change: Toward Predictions that Incorporate Effects Via Land–Water Linkages
Davis, J. M., Colden V. Baxter, Emma J. Rosi-Marshall, J. L. Pierce, and B. T. Crosby. 2013. “Anticipating Stream Ecosystem Responses to Climate Change: Toward Predictions That Incorporate Effects Via Land–Water Linkages”. Ecosystems 16 (5): 909-22. doi:10.1007/s10021-013-9653-4.