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By S. Charles Kendeigh

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Extra info for Animal ecology

Example text

Chaparral: semi-arid areas covered with bushes and shrubs, usually broad-leaved evergreen. Prairie ing some degree of structural uniformity. Although community-types are certainly not highly discrete and of : short grasses. being a functional unit of interacting parts recognition and naming hot, arid habitats with scattered scrubby : or thorny vegetation or, in extreme cases, system, the various parts and concepts of which will will consider the comunfold as we proceed. one absolute units, way of indicating positions in the continua along environmental gradients that are occupied by particular : Savanna grassland with : scattered groves of trees or shrubs.

Although the Mesozoic is predominantly the age of the giant reptiles that lived on the land and in the water and flew through the air, less conspicuous types such as the oaks, change and retreated from the Atlantic coastal plain during the Pleistocene as ice, in which large amounts of water were tied up, alternately melted and formed. In earlier times, the sea inundated much of the continental interior, and on its recession the eosere of plant and animal communities which developed cov- toothed birds, archaic mammals, and insects were de- ered vast areas.

Tlie community behaves as a unit in its competitional and successional relations with other connnunities, in its local and geographic distribution, in its seasonal activities and res]X5nse to climate, and in its evolution. Although the community varies in its taxonomic comijosition and structure in different en- and succession wliicli of the individual vironmental situations, this variation is proportion- no greater than occurs in different cells same type or between individuals belonging same species.

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Animal ecology by S. Charles Kendeigh

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