…In general, population density affects the number of offspring, growth rate, mortality rate, and behavior of individuals, which in turn affects the population growth rate. The density effect at high densities is sometimes called the "crowding effect." Because resources such as space and food are limited, it is impossible for organisms to increase their populations indefinitely. … *Some explanations of terms that mention "crowding effect" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…一般には,個体群の密度によって個体の産子数,成長率,死亡率,行動などに変化が生じ,ひいては個体群増加率に影響が表れることをいう。とくに高密度化での密度効果を〈混み合い効果crowding effect〉と呼ぶこともある。空間や食物という資源には限りがあるから,生物がその個体数を無限に増加させることは不可能である。… ※「crowding effect」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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