Island Biogeography Theory and Conservation Practice

  title={Island Biogeography Theory and Conservation Practice},
  author={Daniel Simberloff and Lawrence G. Abele},
  pages={285 - 286}
The application of island biogeography theory to conservation practice is premature. Theoretically and empirically, a major conclusion of such applications—that refuges should always consist of the largest possible single area—can be incorrect under a variety of biologically feasible conditions. The cost and irreversibility of large-scale conservation programs demand a prudent approach to the application of an insufficiently validated theory. 

Island biogeography and habitat conservation

Without question, substantial controversy exists over the theory of island biogeography and its possible relevance to conservation practice. One of the paradoxes is that despite the obvious

The equilibrium theory of island biogeography : fact or fiction?

It is concluded that there is little support for its tenets and the application of the equilibrium theory of island biogeography to nature conservation and ecology is therefore premature.

Has island biogeography theory any relevance to the design of biological reserves in New Zealand

Abstract Conservation reserves have one of two major aims: to conserve species richness or to conserve a particular species. Diamond’s (1975) geometric design principles, once considered particularly

Limestone communities and island biogeography

Features of the Theory of Island Biogeography were investigated using the saxicolous lichen communities of isolated limestone rock surfaces, and a major contributory factor appeared to be the increase in the micro-habitat diversity with increase in boulder size.

The theory of island biogeography, the sample‐area effect, and the habitat diversity hypothesis: complementarity in a naturally fragmented landscape of lake islands

Investigate relationships between fragmentation and species diversity in the context of the theory of island biogeography, sample‐area effect, and habitat diversity hypothesis.

Applying Island Biogeographic Theory to an East African Reserve

The isolation of nature reserves by encroaching civilization may provide significant changes in the structure and composition of protected animal communities. Recent models from applied island



Biogeography of the Megazoo

A system of primary wildland reserves may be required to ensure a diversity of plant and animal species in the future and should be distributed so that they include a maximum of the world's biological diversity.

Equilibrium Theory of Island Biogeography and Ecology

The intrinsic importance of islands has not inspired the intense research in island biogeography which justifies this review of recent advances, and the realization that oceanic islands are paradigms for geo-graphic entities ranging in size from tiny habitat patches to continents or even the entire earth is realized.

Avifaunal equilibria and species turnover rates on the channel islands of california.

  • J. Diamond
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1969
Most of the islands were found to be in equilibrium as to number of species, but between 17 and 62 per cent of the 1917 breeding species had disappeared by 1968, and an approximately equal number of new immigrant species had become established.

Mammals on Mountaintops: Nonequilibrium Insular Biogeography

  • James H. Brown
  • Environmental Science, Geography
    The American Naturalist
  • 1971
Paleontological evidence suggests that the mountains were colonized by a group of species during the Pleistocene when the climatic barriers that currently isolate them were abolished, and subsequent to isolation of the mountains, extinctions have reduced the faunal diversity to present levels.

Comparison of faunal equilibrium turnover rates on a tropical island and a temperate island.

  • J. Diamond
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1971
Karkar, a tropical island in the southwest Pacific Ocean, has a similar extinction rate, but a lower immigration rate expressed as a fraction of the mainland species pool, due to the sedentariness of many tropical forest birds.

Experimental Zoogeography of Islands: The Colonization of Empty Islands

The first evidence of faunistic equilibrium obtained through controlled, replicated experiments is reported, together with an analysis of the immigration and extinction processes of animal species based on direct observations, to indicate strongly that a dynamic equilibrium number of species exists for any island.

Turnover and Equilibria in Insular Avifaunas, with Special Reference to the California Channel Islands

According to current biogeographical theory, the number of species comprising an insular biota is the result of a dynamic interaction between extinction and immigration rates, and birds are relatively easy to observe and are well known taxonomically and biologically.

Experimental Zoogeography of Islands: Defaunation and Monitoring Techniques

In order to facilitate experiments on colonization, a technique was developed that permits the removal of the faunas of very small islands that are composed almost exclusively of arboreal arthropods, with 20-50 species usually present.

Experimental Zoogeography of Islands. A Two‐Year Record of Colonization

The results of censuses taken at the end of the second year on the four islands in the group located in the lower Keys (El, E2, E3, ST2) found the numbers of species were found to have changed little from the previous year, providing further evidence that they are in equilibrium.