Biology 2485B Lecture 3: Week 3 lecture 6-7
4 Apr 2017
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Document Summary
There is a decrease of seafood in the gulf of mexico since the 1980"s: there was already a sharp decline before the 2010 oil spill, or the hurricanes katrina and rita. The dead zone appears in the spring and continues to grow through the fall it starts in the louisiana to the mouth of the. Mississippi and atchafalaya river: in 2002 it covered about 22,000 km2. It allowed for the prediction of the dead zone emergence. Because of these finding the farmers were told to lower the fertilizer level: there are have 400 other dead zones around the world. But then the predators can also become a problem: inspection, offer strong incentives, penalties for bringing in untreated goods, the new predator can eventually become a problem, encourage hunting and fishing. Nutrient and other materials (like toxins or metals) have cycles.
