Spreading Dead Zones and Consequences for Marine Ecosystems

@article{Daz2008SpreadingDZ,
  title={Spreading Dead Zones and Consequences for Marine Ecosystems},
  author={Robert J. D{\'i}az and Rutger Rosenberg},
  journal={Science},
  year={2008},
  volume={321},
  pages={926 - 929}
}
Dead zones in the coastal oceans have spread exponentially since the 1960s and have serious consequences for ecosystem functioning. The formation of dead zones has been exacerbated by the increase in primary production and consequent worldwide coastal eutrophication fueled by riverine runoff of fertilizers and the burning of fossil fuels. Enhanced primary production results in an accumulation of particulate organic matter, which encourages microbial activity and the consumption of dissolved… 
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References

SHOWING 1-10 OF 392 REFERENCES
Eutrophication—The future marine coastal nuisance?
Coastal Hypoxia: consequences for living resources and ecosystems
Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 58. Hypoxia is a condition that occurs when dissolved oxygen falls below the level necessary to…
Increased marine production of N2O due to intensifying anoxia on the Indian continental shelf
TLDR
It is suggested that a global expansion of hypoxic zones may lead to an increase in marine production and emission of N2O, which, as a potent greenhouse gas, could contribute significantly to the accumulation of radiatively active trace gases in the atmosphere.
Coastal eutrophication near the Mississippi river delta
CHANGES in delivery of river-borne nutrients such as dissolved phosphate, nitrate and silicate, owing to land-use changes and anthropogenic emissions, are known to result in eutrophication1— enhanced…
“A strikingly rich zone”—Nutrient enrichment and secondary production in coastal marine ecosystems
Despite a recent review concluding that there is little or no reason to expect that the production of fish and other animals will increase with nutrient enrichment or eutrophication, there is a…
Eutrophication of Chesapeake Bay: historical trends and ecological interactions
This review provides an integrated synthesis with timelines and evaluations of ecological responses to eutrophi- cation in Chesapeake Bay, the largest estuary in the USA. Analyses of dated sediment…
Benthic Nutrient Cycling and Diagenetic Pathways in the North-western Black Sea
Benthic fluxes of nutrients and metals were measured in the coastal zone of the north-western Black Sea, which is influenced by the Danube and Dniestr rivers. The results from the benthic flux…
Emergence of Anoxia in the California Current Large Marine Ecosystem
TLDR
The novel rise of water-column shelf anoxia in the northern California Current system highlights the potential for rapid and discontinuous ecosystem change in productive coastal systems that sustain a major portion of the world's fisheries.
Gulf of Mexico Hypoxia, A.K.A. “The Dead Zone”
TLDR
P Paleoindicators in dated sediment cores indicate that hypoxic conditions likely began to appear around the turn of the last century and became more severe since the 1950s as the nitrate flux from the Mississippi River to the Gulf of Mexico tripled.
LONG-TERM CHANGES AND IMPACTS OF HYPOXIA IN DANISH COASTAL WATERS
A 38-year record of bottom water dissolved oxygen concentrations in coastal marine ecosystems around Denmark (1965-2003) and a longer partially reconstructed record of total nitrogen (TN) inputs…
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