Métapopulation
A metapopulation is a group of separate populations spatially same species which react reciprocally to unspecified level. This term was invented by Richard Levins in 1969 to describe a model of dynamics of population of harmful insects to agriculture, but the idea was taken up and developed for populations subjected to the Fragmentation écopaysagère.
A metapopulation, sees its discontinuous distribution by cause of geographical fragmentation. The favorable and unfavourable habitats are alternated, and the animals risk their life if they try to pass from one place to the other, so that the movements are reduced. In the too reduced surfaces in the face, the populations, isolated, are dedicated to the extinction. The survival of a metapopulation depends on a periodic recolonisation by dispersion. When the rate of recolonisation is higher than the rate of extinction, the metapopulation survives.
See too
Related articles
- Ecology of the populations
- Biology of the populations
- Equations of Lotka-Volterra
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