A group of local sub-populations is called a meta-population.
A meta-population could be a set of native populations within some larger space, wherever migration from one population to a different is feasible. A patch could be a continuous space with all requisites for the persistence of a neighborhood population. it's separated from alternative patches by unsuitable environment.
Meta-population is a group of people which are spatially distributed within a habitat in two or more sub-populations. Some good examples of meta-population are populations of butterflies and coral-reef fishes. Meta-populations area significantly helpful once discussing about species in disturbed habitats, and also the viability of their populations.
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