個体群密度と分布の集中度 : 特に負の二項分布における共通のkと関連して

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タイトル別名
  • POPULATION DENSITY AND DEGREE OF AGGREGATION : WITH SPECIAL REFERENCE TO A COMMON k IN THE NEGATIVE BINOMIAL DISTRIBUTIONS
  • コタイグン ミツド ト ブンプ ノ シュウチュウド トクニ マケ ノ 2コウ ブンプ ニ オケル キョウツウ ノ k ト カンレン シテ

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抄録

In most insect populations, the pattern of their spatial distributions conforms to the negative binomial series. In some of these cases the degree of aggregation represented in terms of exponent k is stable, while in others it decreases with the increase of the density. The theoretical relation between the value of k and the population density was examined and discussed with regard to the four processes leading to the negative binomial distribution : true contagion, heterogeneity in the probability of occurrence, compounding of POISSON and logarithmic distributions, and immigration-birth-death process. In the first two processes a common k may be obtained within a certain range of density, but in the third process k changes proportionately with the density. In the last process k is stable if the rates of immigration and birth change at the same ratio as the density increases.

収録刊行物

  • 日本生態学会誌

    日本生態学会誌 18 (3), 120-124, 1968

    一般社団法人 日本生態学会

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