Louisiana Gulf fisherman can see the difference.
http://www.cnn.com/2013/04/27/us/gulf-disaster-fishing-industry/index.html
Interesting that they did not appear to interview an aquatic biologist or environmental scientist.
That said, it doesn't take a lot to figure out some of this. Insect populations are down- the aquatic habitats that many of them need in early stages are contaminated. Crab catches are down- well, they feed on all sorts of little critters in the marshes, where the insect larvae and nymphs are not surviving, leading to a food shortage for the crabs, who then are either not surviving or not growing to catch size. It's a food web, folks, and when you take one of the elements out of the web, you disrupt the feeding patterns of the other organisms in the web. Not rocket science.
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