10-05-2012, 04:52 PM
CONSERVATION
03CONSERVATION.ppt (Size: 1.18 MB / Downloads: 146)
In situ conservation
Setting up wild life reserves is not just a matter of building a fence around an area and letting it grow “wild”
Without grazing animals heathlands which contain a number of rare species will revert to woodland
Nature reserves and national parks
First the area that is suitable for the creation of a reserve has to be identified and delimited
This requires surveys to collect data on key species
Property may have to be expropriated
A legal framework may need to be set up to control human activities in the area and in it’s immediate surroundings
Policing the area may also be necessary
The advantages of in situ conservation
The species will have all the resources that it is adapted too
The species will continue to evolve in their environment
The species have more space
Bigger breeding populations can be kept
It is cheaper to keep an organism in its natural habitat
Pere David’s deer success or failure?
Pere David’s deer was a native species of China
In 1865 18 were taken into zoological collections
Meanwhile it became extinct in the wild
By 1981 there were 994 individuals scattered through zoological collections