This is a really tough question. You can analyze an increase in overall number or percentage. Here is one story that I think is pretty good. The Florida red wolf increased from only 17 in 1980 to 257 in 2003.
Check out this webiste to find out the other 99 featured stores of endangered species recovery on the center for biological diversity website.
The Northern Elephant Seal was hunted to the brink of extinction in the early 20th century. Approximately only 100 individuals remained. Due to conservation law, there are now approximately 84,000 seals. The California Condor is also an example of how a species can be saved, although numbers have only gone from about 2 dozen to about 150 living in the wild.
Another great example of an animal that was able to make a comeback was the bald eagle. The species was on the bring of extirpation in the continental United States late in the 20th century. The Bald Eagle was reclassified from Endangered to Threatened in 1995 and in 2007 it was removed from the list of endangered and threatened wildlife. Bald eagles like many other bird species were greatly affected by the pesticide DDT. It interfered with the bird’s calcium metabolism making the bird either sterile or unable to lay healthy eggs. In the early 1700s the population of the bald eagle was up to 500,000 but by the 1950s there were only 400 nesting pairs left. Deforestation, illegal poaching, and pollution all played a role in their decline as well. With regulations in place and DDT banned, the population made a rebound in the 1980s. The estimated total population was estimated between 100,000-115,000 by 1992. Now according to the IUCN, it has been assigned a risk level of Least Concern on their List of Endangered Species.
White-tailed deer were endangered less than 100 years ago, and now they are so numerous they are considered pests in some areas. There were 300,000 white-tailed deer in the U.S. in 1930, but thanks to conservation efforts, there are now 30 million.
Click here to cancel reply.
Sorry,At this time user registration is disabled. We will open registration soon!
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC