density-dependent factor


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density-dependent factor

[¦den·səd·ē ‚di¦pen·dənt ‚fak·tər]
(ecology)
A factor that affects the birth rate or mortality rate of a population in ways varying with the population density.
References in periodicals archive ?
Recent publications have indicated that, despite high fecundity, invertebrates that are subject to high levels of exploitation such as tridacnid clams (Munro 1989) and some scallops (Caddy 1989) may be limited by density-dependent factors that are positive.
2], and the 2nd-order polynomial model suggests that negative density-dependent factors become important above approximately 5 adult individuals [m.
Ecologists have debated the generality and importance of density-dependent factors (e.
The effect of so-called density-dependent factors such as predation, disease and dispersal -- that have a proportionally greater effect on mouse numbers when population densities are high -- is included in the model.