On the regulation of populations of mammals, birds fish and insects

Richard Sibly, Daniel Barker, Michael Denham, Jim Hone, Mark Pagel

    Research output: Contribution to journalArticle

    261 Citations (Scopus)

    Abstract

    A key unresolved question in population ecology concerns the relationship between a population's size and its growth rate. We estimated this relationship for 1780 time series of mammals, birds, fish, and insects. We found that rates of population growth are high at low population densities but, contrary to previous predictions, decline rapidly with increasing population size and then flatten out, for all four taxa. This produces a strongly concave relationship between a population's growth rate and its size. These findings have fundamental implications for our understanding of animals' lives, suggesting in particular that many animals in these taxa will be found living at densities above the carrying capacity of their environments
    Original languageEnglish
    Pages (from-to)607-610
    Number of pages4
    JournalScience
    Volume309
    Issue number5734
    DOIs
    Publication statusPublished - 2005

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    population growth
    population size
    mammals
    insects
    birds
    population ecology
    carrying capacity
    fish
    time series analysis
    animals
    population density
    prediction

    Cite this

    Sibly, Richard ; Barker, Daniel ; Denham, Michael ; Hone, Jim ; Pagel, Mark. / On the regulation of populations of mammals, birds fish and insects. In: Science. 2005 ; Vol. 309, No. 5734. pp. 607-610.
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    Sibly, R, Barker, D, Denham, M, Hone, J & Pagel, M 2005, 'On the regulation of populations of mammals, birds fish and insects', Science, vol. 309, no. 5734, pp. 607-610. https://doi.org/10.1126/science.1110760

    On the regulation of populations of mammals, birds fish and insects. / Sibly, Richard; Barker, Daniel; Denham, Michael; Hone, Jim; Pagel, Mark.

    In: Science, Vol. 309, No. 5734, 2005, p. 607-610.

    Research output: Contribution to journalArticle

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