Dynamics of Small Mammal Populations: A Review

摘要: An understanding of population dynamics requires explanations for both the patterns fluctuations and densities at which they occur. To identify causal mechanisms involved, we need to examine environmental factors that impinge upon population, integrative responses individuals link changes in environment individual performance, occur as a result shifting performances. A review literature on small mammals, mostly rodents, suggests average levels are largely determined by balance positive effects resources negative enemies strengths these vary from habitat habitat. Seasonal change each year because seasonal breeding; differences among years shifts weather, resources, enemies. Multiannual (cycles) may time lags or combinations nonlinear density. The volatility density appears directly with reproductive potential inversely strength density-dependent recruitment. general approach determining most important any particular mechanistic, multiple-factor view dynamics. Multiple-factor experiments can should be used test our complex web cause-and-effect relationships influence mammals.