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Foose, T.J.
Regional captive propagation programs as part of conservation strategies for threatened wildlife
1993 Zoo's Print: 11-14
An "extinction" crisis is confronting the wildlife of our planet, especially tetrapod vertebrates (mammals, birds, reptiles, amphiblans) with as many as one-third (6,000) of the 23,000 tetraped species threatened over the next century. Moreover, as wild populations are reduced in number and fragmented in distribution, other kinds of "extinction" threats appear in addition to the primary causes of the crisis, i.e habitat degradation and unsustainable exploitation. These other threats are the so-called stochastic problems that are peculiar to small populations. As the name indicates, stochastic problems are random and hence difficult to predict. However, there are management measures that can remedy these problems.
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