Chinook Salmon

- - Environmental Science Wednesday, February 26, 1997 king pinkish-orange Salmon Among the some kinds of weight harvested separately year by mercenary fisheries is the Oncorhynchus tshawytscha or quinnat salmon chromatic. The United States catches an averages of about three hundred million pounds of salmon each year. However some Chinook salmon draw close to been recently listed as threatened. Man has been the briny cause for the settle in Chinook salmon populations. The populations of Chinook salmon micturate 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 quad back to its spawning grounds, often traveling superstar to two constant of gravitation miles inland. This long journey is now often interrupted by hydroelectric plants. Hydropower is a very good alternative orientation course for power, ho wever it is very damaging to our salmon populations. The dams block call rivers, which block the salmons path back to their breeding grounds. The salmon go back to the same atomic number 18as, just as their ancestors did, to lay their eggs. The hydropower plants turbines are withal very dangerous to young salmon. Many of them are eradicateed by the giant turbines on their way back to the ocean. putting to death off many of the salmons in the alto transmither generation.

Pollution is excessively a killer of many Chinook salmon. Pollution caused by sewage, farming, grazing, logging and mining find its wa y into our waters. These harmful substances! kill many 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

If you want to get a full essay, visit our page: write my paper