Representing biodiversity: Data and procedures for identifying priority areas for conservation |
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Authors: | Email author" target="_blank">C?R?MargulesEmail author R?L?Pressey P?H?Williams |
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Institution: | (1) CSIRO Sustainable Ecosystems, Tropical Forest Research Centre and the Rainforest Cooperative Research Centre, 4883 Atherton, Queensland, Australia;(2) New South Wales National Parks and Wildlife Service, 2350 Armidale, New South Wales, Australia;(3) Department of Entomology, The Natural History Museum, Cromwell Road, SW7 5BD London, UK |
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Abstract: | Biodiversity priority areas together should represent the biodiversity of the region they are situated in. To achieve this,
biodiversity has to be measured, biodiversity goals have to be set and methods for implementing those goals have to be applied.
Each of these steps is discussed. Because it is impossible to measure all of biodiversity, biodiversity surrogates have to
be used. Examples are taxa sub-sets, species assemblages and environmental domains. Each of these has different strengths
and weaknesses, which are described and evaluated. In real-world priority setting, some combination of these is usually employed.
While a desirable goal might be to sample all of biodiversity from genotypes to ecosystems, an achievable goal is to represent,
at some agreed level, each of the biodiversity features chosen as surrogates. Explicit systematic procedures for implementing
such a goal are described. These procedures use complementarity, a measure of the contribution each area in a region makes
to the conservation goal, to estimate irreplaceability and flexibility, measures of the extent to which areas can be substituted
for one another in order to take competing land uses into account. Persistence and vulnerability, which also play an important
role in the priority setting process, are discussed briefly. |
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Keywords: | Biodiversity priority areas biodiversity surrogates complementarity representativeness |
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