Fish, Krill and Phytoplankton Biomass of Oceans declining

http://www.bbc.com/future/story/20120920-are-we-running-out-of-fish

How the world’s oceans could be running out of fish

http://news.nationalgeographic.com/news/2003/05/0515_030515_fishdecline.html

Big-Fish Stocks Fall 90 Percent Since 1950, Study Says

http://www.int-res.com/articles/theme/m512p155.pdf

A century of fish biomass decline in the ocean

http://www.nature.com/nature/journal/v432/n7013/abs/nature02996.html

Long-term decline in krill stock and increase in salps within the Southern Ocean

http://www.scientificamerican.com/article/phytoplankton-population/

Phytoplankton Population Drops 40 Percent Since 1950