Chinook Salmon

- - Environmental Science Wednesday, February 26, 1997 king chromatic Salmon Among the some kinds of slant harvested each(prenominal) year by mercenary fisheries is the Oncorhynchus tshawytscha or chinook chromatic. The United States catches an averages of about three hundred million pounds of salmon each year. However some Chinook salmon arm to been recently listed as threatened. Man has been the main cause for the chastise in Chinook salmon populations. The populations of Chinook salmon pee-pee declined for several reasons. Hydropower and its destructiveness to the environment, pollution, and over seek argon the three main causes for the decline. The Chinook salmon is known for traveling the greatest outer space back to its spawning grounds, often traveling superstar to two railyard miles inland. This long journey is now often interrupted by hydroelectric plants. Hydropower is a very good alternative resource for power, however it is very damaging to our salmon populations. The dams block achieve rivers, which block the salmons path back to their breeding grounds. The salmon go back to the same aras, just as their ancestors did, to lay their eggs. The hydropower plants turbines are withal very dangerous to young salmon. Many of them are cleanuped by the giant turbines on their way back to the ocean. putting to death off many of the salmons in the alto earnher generation.

Pollution is as well a killer of many Chinook salmon. Pollution caused by sewage, farming, grazing, logging and mining find its way into our waters. These harmful substances kill man y species of fish and other marine life. The! Chinook salmon is no exception. The chemicals are dumped into the rivers and streams and eventually these chemicals find their way to the ocean, polluting and effecting each area they pass through. The largest contributor to the decline in the Chinook salmon population is the commercial fishing industry. From... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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