NONLINEAR CHARACTER OF SPECIES DIVERSITY: THE CASE OF ISLAND BIRD COMMUNITIES

A. V. Matsyura

Abstract


Here we presented some theoretical conclusions about the nonlinear links in island bird communities. It is proved, that the relations between the specific biodiversity, structure and entropy of biogeocenosis are nonlinear. The optimal level of diversity in island bird communities does not depend on the carrying capacity. The optimal level of species diversity and the corresponding value of the total population (biomass) increases with carrying capacity and available ecological niches. The population diversity is the basis for community adaptation towards the unstable environment. Species diversity allows the community as a whole to be more efficient and to use the resources of environment more efficient by differentiating of ecological niches. The species diversity indices do not strive to stable constant, they increase along with species abundance but these dependences are rather nonlinear.

 


Keywords


breeding birds; island communities; nonlinear relations; specific diversity; entropy; species diversity; evenness.

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DOI: http://dx.doi.org/10.15421/201655

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