Attack of the Sea Urchins and Other Things

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Oceans, the beautiful blue gems of our world, full of bountiful resources. Well, used to be before humans slowly over fished several fish and shellfish species. Over fishing like this causes many problems from ecological issues to social issues.
Americans are eating more fish, increasing the demand for fish. As shown by the department of agriculture’s Per Capita Consumption of Major Food Commodities: 1980 to 2010, the average person in 1980 ate 12.4 pounds of fish per year and increased to 15.8 in 2010 (Department). It doesn’t seem that much of an increase but if you would take into account the number of people in the US it’s a significant increase. This increase in demand causes an incredible strain on the suppliers. As a result, it causes over fishing of many species. The effects of over fishing are much more diverse.
It disrupts the ecological balance of the region. An example of this is in an article in the National Geographic written by Warne Kennedy showing how over fishing of spiny rock lobster and snapper in the waters near an island in New Zealand called Goat Island caused the population of a species of sea urchin to explode. As a result, the local reefs and kelp fields were severely damaged, and when fishing there was stopped the sea urchin numbers went back to normal and the kelp grew back (Kennedy 70-89). See when the predators (spiny rock lobster and snapper) population drops, it causes its preys (sea urchins) population to increase. When that happens, the needs of the prey’s population increase causing damage to what ever is below it in the food chain.
One of the only good things to come out of this is movements to create marine reserves. These reserves are off limits to fishing, so scientists can see the differe...

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... will have to carry around filing cabinets full of regulation documents, and sea urchins will eat all the kelp and take over the world. It is not all bad though, we will at least have more reserves that will let us see what the seas could be.

Works Cited

Department of Agriculture. "Per Capita Consumption Of Major Food Commodities: 1980 To 2010 [Selected Years]." ProQuest Statistical Abstract of the U.S. 2014 Online Edition. Ed. ProQuest, 2014. Web: ProQuest Statistical Abstract 02/14
Warne, Kennedy. "Global Fish Crisis: Blue Haven." National Geographic Vol. 211, No. 4. April 2007: 70-89. SIRS Issues Researcher. Web. 25 Feb. 2014.
Robbins, Michael W. "The Fate of the Ocean: The Catch." Mother Jones Vol. 31, No. 2. March/April 2006: 49+. SIRS Issues Researcher. Web. 25 Feb. 2014.
"Global Consequences of Overfishing." Fisheries and Oceans Canada. Web. 05 Mar. 2014.

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