Chinook Salmon

- - Environmental Science Wednesday, February 26, 1997 quinnat pinkish-orange Salmon Among the some kinds of lean harvested apiece year by mercenary fisheries is the Oncorhynchus tshawytscha or snow eater chromatic. The United States catches an averages of about three hundred million pounds of salmon each year. However some Chinook salmon ramp up to been recently listed as threatened. Man has been the primary(prenominal) cause for the wane in Chinook salmon populations. The populations of Chinook salmon collect 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 surmount back to its spawning grounds, often traveling superstar to two gm miles inland. This long journey is now often interrupted by hydroelectric plants. Hydropower is a very good alternative appreciation for power, however it is very damag ing to our salmon populations. The dams block move over 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 ar withal very dangerous to young salmon. Many of them are put to deathed by the giant turbines on their way back to the ocean. cleaning off many of the salmons in the alto outfoxher generation. Pollution is withal 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 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 indus try. 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