Tree Population Dynamics During the Past 20,000 Years
Paleovegetation maps compiled at the biome level (Chapter 4) provide a general overview of major trends in change of vegetation patterns through time. In order to evaluate the changes in composition and structure in vegetation during times of environmental changes such as the transition from Pleistocene to Holocene climatic conditions. it is instructive to examine the individualistic nature of the response of specific tree taxa. The nature of the pollen record does not allow mapping of distributional changes in dominance of all species of native eastern North American trees (e.g., Little 1971, 1977). Taxon calibrations available to date on a subcontinental scale. however. do allow us to map changes in relative dominance of many of the dominant. subdominant. and characteristic tree taxa (see discussions in Chapters 2 and 3).
KeywordsGreat Lake Region Alluvial Valley Atlantic Coastal Plain Dominance Structure Population Trajectory
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