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SlideshowReport

The theoretical design of nature reserves, based on the tenets of island biogeography.

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(a) A larger reserve will hold more species and have low extinction rates. (b) Given a certain area available, it should be fragmented into as few pieces as possible. (c) If an area must be fragmented, the pieces should be as close as possible to permit dispersal. (d) To enhance dispersal, a cluster of fragments is preferable to a linear arrangement. (e) Maintaining or creating corridors between fragments may also enhance dispersal. (f) Circular-shaped areas will minimize the amount of undesirable edge habitat.
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