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Forest Sciences

Utah State University

1976

Birds

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Bird Populations Of Aspen Forests In Western North America, J.A. Douglas Flack Jan 1976

Bird Populations Of Aspen Forests In Western North America, J.A. Douglas Flack

Aspen Bibliography

The patterning of populations of plants and animals is probably the result of selection over time of organisms according to their individual physiological tolerances, behavioral adaptations to an environmental complex, and geographical availability (Gleason 1926).