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Chesapeake Bay Eutrophication: Scientific Understanding, Ecosystem Restoration, and Challenges for Agriculture

Chesapeake Bay Eutrophication: Scientific Understanding, Ecosystem Restoration, and Challenges for Agriculture,Donald F. Boesch,Russell B. Brinsfield,

Chesapeake Bay Eutrophication: Scientific Understanding, Ecosystem Restoration, and Challenges for Agriculture   (Citations: 139)
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practices, emerging issues include linking eutrophication and living resources, reducing atmospheric sources of N, enhancing nutrient In this paper we assess how eutrophication came to sinks, controlling sprawling suburban development, and predicting be recognized as an important problem; what we under- and preventing harmful algal blooms. stand about it; commitments made to restore the Chesa- peake ecosystem by reducing nutrient inputs; and the progress made in the restoration effort. We conclude
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    • ...Excess nutrient and pollutant loadings have also been linked to several problems in aquatic ecosystems, including increased frequency and severity of harmful algal blooms, dramatic shifts in trophic relationships, direct toxicity to aquatic organisms, and expansion of coastal hypoxic zones (Boesch et al. 2001; Ocean Commission 2004 ;D iaz and Rosenberg 2008)...

    Ping Luet al. Spatial and temporal variations of nitrogen pollution in Wen-Rui Tang ...

    • ...This important estuary and its tributaries are prone to both nitrogen (N)- and P-induced eutrophication (Boesch, Brinsfield, and Magnien 2001)...

    Keisha N. Johnsonet al. Effect of Coal Combustion By-products on Phosphorus Runoff from a Coas...

    • ...Excessive nutrients promote eutrophication, which decreases water transparency, creates foul odor and taste, depletes oxygen, causes fish kills, reduces biodiversity, and decreases esthetic, recreational, and property values along waterways (Boesch et al. 2001; Carpenter et al. 1998; Wetzel 2001)...

    Bridgett M. Westet al. Antibiotic Resistance, Gene Transfer, and Water Quality Patterns Obser...

    • ...However, productivity has been impaired by various stressors from human activities, such as eutrophication due to excessive inputs of nutrients and organic matter (Boesch et al. 2001), discharge of toxic pollutants (Stein and Cadien 2009), suspended solids from dredging (Torres et al. 2009), loss of mud and sand flats from land reclamation (Furota 1997), and pressure from commercial or recreational fisheries (Jennings et al. 2001)...

    Keita KodamaMasaaki OyamaGen Kumeet al. Impaired megabenthic community structure caused by summer hypoxia in a...

    • ...Boesch et al. (2001) found that, for a given freshwater discharge rate, the observed 1982–1992 hypoxic volume in Chesapeake Bay was two or more times larger than that of 1949–1984, suggesting that a threshold of nutrient loading or ecosystem response was reached...
    • ...This loss of assimilative capacity may indicate a state change (or regime shift) implying that disproportionately large nutrient load reductions may be required to bring hypoxia under control (Boesch et al. 2001)...
    • ...In earlier studies, Boesch et al. (2001), Hagy et al. (2004), Kemp et al. (2005 ), and Kemp and Goldman (2008 )d iscussed a threshold change in the Chesapeake Bay hypoxia in the 1980s, when the Bay became more susceptible to nutrient loads...

    Yong Liuet al. Analysis of the Chesapeake Bay Hypoxia Regime Shift: Insights from Two...

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