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A Theoretical Ecological Model of Size Distributions Among Species of Animals

The American naturalist, 1959-03, Vol.93 (869), p.117-125 [Peer Reviewed Journal]

ISSN: 0003-0147 ;EISSN: 1537-5323 ;DOI: 10.1086/282063

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  • Title:
    A Theoretical Ecological Model of Size Distributions Among Species of Animals
  • Author: Hutchinson, G. E. ; MacArthur, Robert H.
  • Subjects: Animals ; Biotopes ; Body length ; Fauna ; Head ; Mammals ; Mosaic ; Size distribution ; Species diversity
  • Is Part Of: The American naturalist, 1959-03, Vol.93 (869), p.117-125
  • Description: Even within a given level of the food web there appear to be fewer species of large than of small animals. A model can be constructed in which the properties of the niches of different species are defined by the numbers of kinds of interface between a limited number of sorts of randomly distributed environmental mosaic elements. This model implies few very small species, rapid increase in number of species up to a modal size and a slow decline in number, ideally asymptotic to unity, as the size increases. Structurally uniform groups of animals such as the Odonata do not show this distribution, but in mammal faunas it is approached. It is suggested that if a really complete faunistic list for a given biotope could be constructed the size distribution by species would approximate the form given by the model.
  • Publisher: Salem, Mass: Science Press
  • Language: English
  • Identifier: ISSN: 0003-0147
    EISSN: 1537-5323
    DOI: 10.1086/282063
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