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(Article of periodic en Anglais - 1983)

Document title

Late-Quaternary vegetational dynamics and community stability reconsidered

Authors(s) and Affiliation(s)

DELCOURT P. A. ; DELCOURT H. R. ;

Abstract

Defining the spatial and temporal limits of vegetational processes such as migration and invasion of established communities is a prerequisite to evaluating the degree of stability in plant communities through the late Quaternary. The interpretation of changes in boundaries of major vegetation types over the past 20,000 yr offers a complementary view to that provided by migration maps for particular plant taxa. North of approximately 43N in eastern North America, continual vegetational disequilibrium has resulted from climatic change, soil development, and species migrations during postglacial times. Between 33 and 39N, stable full-glacial vegetation was replaced by a relatively unstable vegetation during late-glacial climatic amelioration| stable interglacial vegetation developed there after about 9000 yr B. P. Late-Quaternary vegetation has been in dynamic equilibrium, with a relatively constant flora, south of 33N on upland interfluves along the northern Gulf Coastal Plain, peninsular Florida, and west-central Mexico.

Source

Article of periodic

published at : Quaternary research New York

Editor :

Millesime : 1983, vol. 19, no2 [pp. 265-271]

Bibliographic references : 31 réf.

Language

Anglais

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