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(Article of periodic en Anglais - 1983)

Document title

Holocene vegetational history of the Kootenai River valley, Montana

Authors(s) and Affiliation(s)

MACK R. N. ; RUTTER N. W. ; VALASTRO S. ;

Abstract

Pollen records reveal a five-zone sequence of Holocene vegetation change since the initiation of sedimentation ca. 10,540 yr B.P. Initial vegetation on the newly deglaciated terrain reflects a relatively cool, moist macroclimate. Pollen Zone II (ca. 11,000-7 100 yr B.P.) represents a warmer microcimate. After 7 100 yr B.P. (Pollen zone III) diploxylon pines indicate an expansion of xerophytic forest. A short-term climatic trend with more available water began after ca. 4 000 yr B.P. Emergence of the modern microclimate is indicated primarily with the first regular appearance of Tsuga heterophylla in the pollen record by ca. 2 700 yr B.P.

Source

Article of periodic

published at : Quaternary research New York

Editor :

Millesime : 1983, vol. 20, no2 [pp. 177-193]

Bibliographic references : 48 réf.

Language

Anglais

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