1,721,027 research outputs found

    Trophy hunting does and will support biodiversity : a reply to Ripple et al.

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    Refers to Enrico Di Minin, Nigel Leader-Williams, Corey J.A. Bradshaw, Banning Trophy Hunting Will Exacerbate Biodiversity Loss, Trends in Ecology & Evolution, Volume 31, Issue 2, February 2016, Pages 99-102.Enrico Di Minin, Nigel Leader-Williams, Corey J.A. Bradsha

    Measuring conservation success: assessing zoos' contribution

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    Georgina M. Mace, Andrew Balmford, Nigel Leader-Williams, Andrea Manica, Olivia Walter, Chris D. West and Alexandra Zimmermannhttp://www.cambridge.org/catalogue/catalogue.asp?isbn=978052161858

    The cost of conserving elephants

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    African elephants attract a variety of economic values, and to varying degrees in different range states, live both within and outside protected areas. In either situation, elephants may be in conflict with man. As a result range states have to expend funds to protect elephants. This questionnaire based survey found as a general rule in 1981 it was necessary to spend around US215persqkmofprotectedareatopreventthedeclineofelephantsdueseverecommercialpoachingforivory.In1989,takinginflationintoaccount,US215 per sq km of protected area to prevent the decline of elephants due severe commercial poaching for ivory. In 1989, taking inflation into account, US340 would be required to maintain the same standard. Given that ensuring the success of law enforcement efforts is probably the most important management objective for future conservation greater emphasis needs to be placed upon this topic

    THEORY AND PRAGMATISM IN THE CONSERVATION OF RHINOS

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    If rhinos are to survive for the next couple of hundred generations. theoreticians suggest that it is best to conserve large populations. Equally, if effective population size is small, theoreticians wish to interchange genetic material between wild and captive populations. In an ideal world, it would be highly desirable to plan conservation activities over fifty or a hundred generations. However, major conservation crises and successes for rhinos have occurred over much shorter time frames. Thus 95 % of Africa's large black rhino populations have been lost, and southern white and Indian rhino populations have been re-built, over a few decades. Initial successes for certain black rhino populations, and even for northern white and Javan rhinos, have materialised within a decade (or one rhino generation). A model of incentives to kill black rhinos in Zambia suggests that wildlife managers should aim to increase their success at detecting poachers. By analogy with this model, most of the successes or failures in rhino conservation in situ can be attributed to the provision of, or lack of, adequate protection. Despite complaints that providing adequate protection is expensive, it is more cost-effective on a per-animal basis than measures which involve zoos and captive breeding. Therefore. the pragmatic option to achieve success in rhino conservation over the next few decades appears to be to build up small populations in situ and maintain them in natural habitat with minimum interference. *Present address

    A career in conservation

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    Development of national policy for elephant conservation in Tanzania

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    Only an abstract and the summary of the presentation and the following discussion are published. Notes that the responsibility of elephant conservation lies with the range states and the development of coherent, strong, politically approved national policies are necessary to indentify targets for effective action. Outlines the National Policy for Elephant conservation in Tanzania as developed by the the Department of Wildlife through the Protected Areas Wildlife Management Programme in 1993-93 and approved by the Minister in November 1994
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