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. 
 
High Resolution Measurement of Light in Terrestrial Ecosystems Using Photodegrading Dyes
Roales, Javier, Jorge Durán, Heather A. Bechtold, Peter M. Groffman, and Emma J. Rosi-Marshall. 2013. “High Resolution Measurement of Light in Terrestrial Ecosystems Using Photodegrading Dyes”. PLoS ONE 8 (9): e75715. doi:10.1371/journal.pone.007571510.1371/journal.pone.0075715.g00110.1371/journal.pone.0075715.g00210.1371/journal.pone.0075715.g00310.1371/journal.pone.0075715.g004.
Macroinvertebrate diets reflect tributary inputs and turbidity-driven changes in food availability in the Colorado River downstream of Glen Canyon Dam
Kelly, Holly A. Wellard, Emma J. Rosi-Marshall, Theodore A. Kennedy, Robert O. Hall, Wyatt F. Cross, and Colden V. Baxter. 2013. “Macroinvertebrate Diets Reflect Tributary Inputs and Turbidity-Driven Changes in Food Availability in the Colorado River Downstream of Glen Canyon Dam”. Freshwater Science 32 (2): 397-410. doi:10.1899/12-088.1.
Pharmaceuticals suppress algal growth and microbial respiration and alter bacterial communities in stream biofilms
Rosi-Marshall, Emma J., Dustin W. Kincaid, Heather A. Bechtold, Todd V. Royer, M. Rojas, and John J. Kelly. 2013. “Pharmaceuticals Suppress Algal Growth and Microbial Respiration and Alter Bacterial Communities in Stream Biofilms”. Ecological Applications 23 (3): 583-93. doi:10.1890/12-0491.1.
Solute specific scaling of inorganic nitrogen and phosphorus uptake in streams
Hall, Robert O., M. A. Baker, Emma J. Rosi-Marshall, and J.L. Tank. 2013. “Solute Specific Scaling of Inorganic Nitrogen and Phosphorus Uptake in Streams”. Biogeosciences Discussions 10 (4): 6671-93. doi:10.5194/bgd-10-6671-2013.
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.
Temporal variation in organic carbon spiraling in Midwestern agricultural streams
Griffiths, N.A., J.L. Tank, Todd V. Royer, T. J. Warrner, T.C. Frauendorf, Emma J. Rosi-Marshall, and M.R. Whiles. 2012. “Temporal Variation in Organic Carbon Spiraling in Midwestern Agricultural Streams”. Biogeochemistry 108: 149-69. doi:10.1007/s10533-011-9585-z.
Air-water oxygen exchange in a large whitewater river
Hall, Robert O., Theodore A. Kennedy, and Emma J. Rosi-Marshall. 2012. “Air-Water Oxygen Exchange in a Large Whitewater River”. Limnology & Oceanography: Fluids & Environments 2: 1-11. doi:10.1215/21573689-1572535.
The Nitrogen Cycle
Groffman, Peter M., and Emma J. Rosi-Marshall. 2012. “The Nitrogen Cycle”. In K. C. Weathers, D. L. Strayer and G. E. Likens (eds.). Fundamentals of Ecosystem Science, 137-58. Academic Press, Inc.
The antihistamine cimetidine alters stream invertebrate growth and production in artificial streams
Hoppe, P., Emma J. Rosi-Marshall, and Heather A. Bechtold. 2012. “The Antihistamine Cimetidine Alters Stream Invertebrate Growth and Production in Artificial Streams”. J. N. Am. Benthol. Soc. 31 (2): 379-88. doi:10.1899/11-089.