Dr. Emma J. Rosi

Aquatic Ecologist | PhD, University of Georgia

Expertise
freshwater, invasive species, human impacts

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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. 
 
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.
Acid rain mitigation experiment shifts a forested watershed from a net sink to a net source of nitrogen
Rosi-Marshall, Emma J., Emily S. Bernhardt, Donald C. Buso, Charles T. Driscoll, and Gene E. Likens. 2016. “Acid Rain Mitigation Experiment Shifts A Forested Watershed From A Net Sink To A Net Source Of Nitrogen”. Proceedings Of The National Academy Of Sciences 113 (27): 7580 - 7583. doi:10.1073/pnas.1607287113.
Antidepressants in stream ecosystems: influence of selective serotonin reuptake inhibitors (SSRIs) on algal production and insect emergence
Richmond, Erinn K., Emma J. Rosi-Marshall, Sylvia S. Lee, Ross M. Thompson, and Michael Grace. 2016. “Antidepressants In Stream Ecosystems: Influence Of Selective Serotonin Reuptake Inhibitors (Ssris) On Algal Production And Insect Emergence”. Freshwater Science 35 (3): 845 - 855. doi:10.1086/687841.
Metabolism, Gas Exchange, and Carbon Spiraling in Rivers
Hall, Robert O., J.L. Tank, M. A. Baker, Emma J. Rosi-Marshall, and E. R. Hotchkiss. 2016. “Metabolism, Gas Exchange, And Carbon Spiraling In Rivers”. Ecosystems 19 (1): 73 - 86. doi:10.1007/s10021-015-9918-1.
Methods for quantifying aquatic macroinvertebrate diets
Rosi-Marshall, Emma J., Holly A. Wellard Kelly, Robert O. Hall, and K. A. Vallis. 2016. “Methods For Quantifying Aquatic Macroinvertebrate Diets”. Freshwater Science 35 (1): 229 - 236. doi:10.1086/684648.
Nitrogen-cycling process rates across urban ecosystems
Reisinger, Alexander J., Peter M. Groffman, and Emma J. Rosi-Marshall. 2016. “Nitrogen-Cycling Process Rates Across Urban Ecosystems”. Fems Microbiology Ecology 92 (12): fiw198. doi:10.1093/femsec/fiw198.
Occurrence and Potential Biological Effects of Amphetamine on Stream Communities
Lee, Sylvia S., A. Paspalof, D. Snow, Erinn K. Richmond, Emma J. Rosi-Marshall, and John J. Kelly. 2016. “Occurrence And Potential Biological Effects Of Amphetamine On Stream Communities”. Environmental Science & Technology 50 (17): 9727 - 9735. doi:10.1021/acs.est.6b03717.
Retesting a prediction of the River Continuum Concept: autochthonous versus allochthonous resources in the diets of invertebrates
Rosi-Marshall, Emma J., K. A. Vallis, Colden V. Baxter, and J. M. Davis. 2016. “Retesting A Prediction Of The River Continuum Concept: Autochthonous Versus Allochthonous Resources In The Diets Of Invertebrates”. Freshwater Science 35 (2): 534 - 543. doi:10.1086/686302.
A novel method to assess effects of chemical stressors on natural biofilm structure and function
Costello, David M., Emma J. Rosi-Marshall, Lawton E. Shaw, Michael Grace, and John J. Kelly. 2015. “A Novel Method To Assess Effects Of Chemical Stressors On Natural Biofilm Structure And Function”. Freshwater Biology 61 (12): 2129 - 2140. doi:10.1111/fwb.2016.61.issue-1210.1111/fwb.12641.
A review of ecological effects and environmental fate of illicit drugs in aquatic ecosystems
Rosi-Marshall, Emma J., D. Snow, S.L. Bartelt-Hunt, A. Paspalof, and J.L. Tank. 2015. “A Review Of Ecological Effects And Environmental Fate Of Illicit Drugs In Aquatic Ecosystems”. Journal Of Hazardous Materials 282: 18 - 25. doi:10.1016/j.jhazmat.2014.06.062.
Turbidity, light, temperature, and hydropeaking control primary productivity in the Colorado River, Grand Canyon
Hall, Robert O., Charles B. Yackulic, Theodore A. Kennedy, Michael D. Yard, Emma J. Rosi-Marshall, N. Voichick, and Kathrine E. Behn. 2015. “Turbidity, Light, Temperature, And Hydropeaking Control Primary Productivity In The Colorado River, Grand Canyon”. Limnology And Oceanography 60 (2): 512 - 526. doi:10.1002/lno.10031.
The varying role of water column nutrient uptake along river continua in contrasting landscapes
Reisinger, Alexander J., J.L. Tank, Emma J. Rosi-Marshall, Robert O. Hall, and M. A. Baker. 2015. “The Varying Role Of Water Column Nutrient Uptake Along River Continua In Contrasting Landscapes”. Biogeochemistry 125 (1): 115 - 131. doi:10.1007/s10533-015-0118-z.
Antibiotic Stewardship Should Consider Environmental Fate of Antibiotics
Rosi-Marshall, Emma J., and John J. Kelly. 2015. “Antibiotic Stewardship Should Consider Environmental Fate Of Antibiotics”. Environmental Science & Technology 49 (9): 5257 - 5258. doi:10.1021/acs.est.5b01519.
A framework for establishing restoration goals for contaminated ecosystems
Wagner, Anne M., Diane L. Larson, Julie A. DalSoglio, James A. Harris, Paul Labus, Emma J. Rosi-Marshall, and Kristin E. Skrabis. 2015. “A Framework For Establishing Restoration Goals For Contaminated Ecosystems”. Integrated Environmental Assessment And Management 12 (2): 264 - 272. doi:10.1002/ieam.1709.
Mercury and selenium accumulation in the Colorado River food web, Grand Canyon, USA
Walters, David M., Emma J. Rosi-Marshall, Theodore A. Kennedy, Wyatt F. Cross, and Colden V. Baxter. 2015. “Mercury And Selenium Accumulation In The Colorado River Food Web, Grand Canyon, Usa”. Environmental Toxicology And Chemistry, n/a - n/a. doi:10.1002/etc.3077.
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: 1072-1083. 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 - 525. 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 - 995. 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 - 2767. doi:10.1890/13-2276.1.