Oxygen minimum zones occur naturally in midwater areas of the ocean, generally from 100-1,000 m depth, and can also occur in partially enclosed areas such as the Black and Baltic Seas. Ocean ...

Eutrophication due to excess inputs of nutrients like nitrogen and phosphorus from agriculture or wastewater also stimulates algal blooms, resulting in oxygen depletion when they decompose.

Declines in oxygen have accelerated in recent decades in both realms, as highlighted by Fifth Assessment Report of the IPCC in 2013 1.The number of eutrophication-induced hypoxic sites reported in ...

This process, called eutrophication, has created at least 405 “dead zones” worldwide. ... An Ocean of Data: Looking for Sunken Treasure in a New Way An Ocean of Data: ...

Alberto V. Borges, Nathalie Gypens, Carbonate Chemistry in the Coastal Zone Responds More Strongly to Eutrophication than to Ocean Acidification, Limnology and Oceanography, Vol. 55, No. 1 (Jan., 2010 ...

A new study is warning that the world’s fisheries and ocean ecosystems are threatened even more than previously thought by rising carbon dioxide levels, and the global marine food chain could ...

Sea levels around the world are rising at an 'alarming rate' of 0.12 inches per year, according to a new European Commission-backed report. This is the fifth Ocean State Report published by the ...

Both processes played a greater role than coastal eutrophication did. The researchers say their results suggest the potential effectiveness of ocean alkalinity enhancement, ...

Dear EarthTalk: What effects do fertilizers, pesticides and herbicides used on residential lawns or on farms have on nearby water bodies like rivers, streams—or even the ocean for those of us ...