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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Taro who wrote (798296)	7/30/2014 3:47:00 PM
From: combjelly	Read Replies (1) \| Respond to of 1577890

You don't know much about the current over fishing situation in the North Atlantic Sea, either, do you? You are making a huge assumption. And an incorrect one. Predation is almost never a restriction on range. The big exception is humans can and do over-fish. The reason why fish school is to reduce the impact of predation. Now temperature can and does restrict range. Especially in the oceans where the temperature tends to be pretty constant. Some organisms like corals can only tolerate a narrow range of temperatures. Temperature affects a lot of things, including available food sources, reproductive success, Basic ecology. Here is another example. In the Pacific, there tends to be an oscillation between the anchovy population and the sardine population. Sardine populations off California recently crashed. Hard. Anchovy populations have exploded. By examining sediments, they discovered that the two populations exchange places about every 25 years. In 2003, scientists at the Monterey Bay Aquarium Research Institute (MBARI) combed through decades of data on physical oceanography, marine biology, and meteorology in the Pacific Ocean in search of longterm cycles governing sardine and anchovy populations. They concluded that sardine and anchovy stocks fluctuate according to a roughly 50-year "boom-and-bust" cycle. "A naturally occurring climate pattern that works its way across the Pacific," also known as the Pacific Decadal Oscillation, brings warmer temperatures to the California coast approximately every 25 years, prompting a switch-off between anchovies and sardines. theatlantic.com Thanks for showing us yet another example of Dunning-Kruger at work.