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. 
 
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.
Comparing streambed light availability and canopy cover in streams with old-growth versus early-mature riparian forests in western Oregon
Warren, Dana R, William S. Keeton, Heather A. Bechtold, and Emma J. Rosi-Marshall. 2013. “Comparing Streambed Light Availability and Canopy Cover in Streams With Old-Growth Versus Early-Mature Riparian Forests in Western Oregon”. Aquatic Sciences. doi:10.1007/s00027-013-0299-2.
Food-web dynamics in a large river discontinuum
Cross, Wyatt F., Colden V. Baxter, Emma J. Rosi-Marshall, Robert O. Hall, Theodore A. Kennedy, Kevin C. Donner, Holly A. Wellard Kelly, Sarah E. Z. Seegert, Kathrine E. Behn, and Michael D. Yard. 2013. “Food-Web Dynamics in a Large River Discontinuum”. Ecological Monographs 83 (3): 311-37. doi:10.1890/12-1727.1.
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.
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.
Effects of benthic habitat restoration on nutrient uptake and ecosystem metabolism in three headwater streams
Hoellein, T.J., J.L. Tank, S.A. Entrekin, Emma J. Rosi-Marshall, M.L. Stephen, and G.A. Lamberti. 2012. “Effects of Benthic Habitat Restoration on Nutrient Uptake and Ecosystem Metabolism in Three Headwater Streams”. River Res. Appl 28 (9): 1451-61. doi:10.1002/rra.1547.
Pharmaceutical Compounds and Ecosystem Function: An Emerging Research Challenge for Aquatic Ecologists
Rosi-Marshall, Emma J., and Todd V. Royer. 2012. “Pharmaceutical Compounds and Ecosystem Function: An Emerging Research Challenge for Aquatic Ecologists”. Ecosystems 15: 867-80. doi:10.1007/s10021-012-9553-z.