The Interaction of Native and Introduced Birds in New Zealand
نویسنده
چکیده
These examples can be taken as typical of what has happened wherever native vegetation has been cleared and replaced by pasture. There has been no competition between native and introduced species, either for food or for living space. All but subsoil species among the native earthworms have died out before the introduced lumbricids became established, and the few subsoil earthworms that have remained do not compete with the lumbricids, as the latter are confined to the topsoil.
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Exotic birds increase generalization and compensate for native bird decline in plant-frugivore assemblages.
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