Environmental Effects When Species Become Extinct

Topics: Extinction, Evolution, Plant Pages: 3 (1011 words) Published: June 21, 2013
Animals Title Page:
Environmental Effects When Species Become Extinct
Margarita Villamarín
Universidad Técnica de Ambato

Environmental Effects When Species Become Extinct
Animals are, like us, endangered species on an endangered planet, and we are the ones who are endangering them, it, and ourselves. They are innocent sufferers in a hell of our making. (JEFFREY MOUSSAIEFF MASSON & SUSAN MCCARTHY, When Elephants Weep)

Now a days is common to listen that more and more kind of animals are going to be part of a long list of species in extinction called “the red list”, When a animal is endangered it means that they are disappearing fast or have a very small population. Every day we can see in the media the great campaign that is carried out to preserve these animals, as for example: they are keeping in zoos, they have attended reproduction, they have their habitat protected, and however, it is really necessary? Does it affect in something to the environment that a species extinguishes? Does it affects to humans also? DAVID M. RAUP in his article called “The role of extinction in evolution (2004)” said: “The extinction of species is closely tied to the process of natural selection and is thus a major component of progressive evolution. In some passages of the Origin, Darwin seems to have seen extinction as part of natural selection; in others, as an inevitable outcome.” so why a lot of people are trying to defend the preservation of these species? Let´s analyze the reasons for which animals in extinction should be conserved. It remains all the scientists agree with which the extinction of the species has been part of the development of the earth during all its existence, According with Juliette Jowit (2010) “Extinction is part of the constant evolution of life, and only 2-4% of the species that have ever lived on Earth are thought to be alive today” When a species disappear, new ones emerge, it has happened during millions of years, such it is the...

References: DAVID M. RAuP The role of extinction in evolution (2004),Department of Geophysical Sciences, University of Chicago, Chicago, IL 60637 from:http://www.pnas.org/content/91/15/6758.full.pdf
Juliette Jowit (2010) Humans driving extinction faster than species can evolve, say experts, from: http://www.guardian.co.uk/environment/2010/mar/07/extinction-species-evolve
MICHAELGREENWELL ( 2007) The Impact of Wildlife Extinction and the Importance of Biodiversity, from http://exitstageright.wordpress.com/2007/10/08/the-impact-of-wildlife-extinction-and-the-importance-of-biodiversity/
 Michael Evans, 2011 Endangered Species from: http://www.earthtimes.org/encyclopaedia/environmental-issues/endangered-species/
Navjot S. Sodhi, Barry W. Brook, and Corey J. A. Bradshaw, Causes and Consequences of Species Extinctions from http://press.princeton.edu/chapters/s5_8879.pdf
Quotes from: http://www.notable-quotes.com/a/animals_quotes_ii.html
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