Tag Archives: nitrogen

Aquatic Dead Zones

I’ve published several links to global maps of coastal hypoxia. Now, NASA has produced a new map of global hypoxic zones, based on Diaz and Rosenberg’s . Spreading Dead Zones and Consequences for Marine Ecosystems. in Science, 321(5891), 926-929.  NASA’s … Continue reading

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Over fertilizing the world

Three faces of global over fertilization from agriculture in China and the USA, and its complex effects on food webs. 1) Chinese farmers are acidifying there soil by over applying fertilizer.  Acidic soils impede crop growth and amplify the leaching … Continue reading

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Nitrogen deposition making lakes more regulated by phosphorus

Nitrogen deposition is increased the extent to which lake algal populations are regulated by phosphorus, shifting lake food webs.  Because, the patterns of human amplification of nitrogen and phosphorus trasport are different this should drive different patterns in lakes in … Continue reading

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Nitrogen transfer from sea to land via commercial fisheries

Roxanne Maranger an ecologist at the University of Montreal and other have a neat paper in Nature Geoscience Nitrogen transfer from sea to land via commercial fisheries that shows that commercial fishing removed substantial amounts of nitrogen from coastal oceans. … Continue reading

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