J
James D. Hagy
Researcher at United States Environmental Protection Agency
Publications - 38
Citations - 3726
James D. Hagy is an academic researcher from United States Environmental Protection Agency. The author has contributed to research in topics: Estuary & Bay. The author has an hindex of 22, co-authored 36 publications receiving 3370 citations. Previous affiliations of James D. Hagy include University of Maryland Center for Environmental Science.
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Journal ArticleDOI
Eutrophication of Chesapeake Bay: historical trends and ecological interactions
W. M. Kemp,Walter R. Boynton,Jason E. Adolf,Donald F. Boesch,William C. Boicourt,Grace S. Brush,Jeffrey C. Cornwell,Thomas R. Fisher,Patricia M. Glibert,James D. Hagy,Lawrence W. Harding,Edward D. Houde,David G. Kimmel,W. D. Miller,Roger I. E. Newell,Michael R. Roman,Erik M. Smith,J. C. Stevenson +17 more
TL;DR: In this article, an integrated synthesis with timelines and evaluations of ecological responses to eutrophi- cation in Chesapeake Bay, the largest estuary in the USA, are provided.
Journal ArticleDOI
Hypoxia in Chesapeake Bay, 1950–2001: Long-term change in relation to nutrient loading and river flow
TL;DR: A 52-yr record of dissolved oxygen in Chesapeake Bay (1950-2001) and a record of nitrate (NO3−) loading by the Susquehanna River spanning a longer period (1903, 1945, 2001) were assembled to describe the long-term pattern of hypoxia and anoxia in the Maryland mainstem Bay and its relationship to NO3− loading as mentioned in this paper.
Journal ArticleDOI
Temporal responses of coastal hypoxia to nutrient loading and physical controls
TL;DR: In this article, the authors review published parallel time-series data on hypoxia and loading rates for inorganic nutrients and labile organic matter to analyze trajectories of oxygen (O2) response to nutrient loading.
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Nutrient enrichment and fisheries exploitation: interactive effects on estuarine living resources and their management
Denise L. Breitburg,J.K. Craig,J.K. Craig,Richard S. Fulford,Richard S. Fulford,Kenneth A. Rose,Walter R. Boynton,Damian C. Brady,Benjamin J. Ciotti,Robert J. Diaz,Kevin D. Friedland,James D. Hagy,Deborah R. Hart,Anson H. Hines,Edward D. Houde,S.E. Kolesar,S.E. Kolesar,Scott W. Nixon,James A. Rice,David H. Secor,Timothy E. Targett +20 more
TL;DR: In this article, the authors proposed a model to improve the understanding and management of systems subject to both nutrient enrichment and fisheries exploitation in estuaries and semi-enclosed seas.
Journal ArticleDOI
Nutrient Budgets and Management Actions in the Patuxent River Estuary, Maryland
Walter R. Boynton,James D. Hagy,Jeffrey C. Cornwell,W. M. Kemp,S. M. Greene,Michael S. Owens,Joel E. Baker,Randolph K. Larsen +7 more
TL;DR: In this article, a multi-year nitrogen and phosphorus budget for the Patuxent River estuary was developed for the seasonally stratified and moderately eutrophic tributary of Chesapeake Bay.