Open AccessPollen diagrams from the Shumagin Islands and adjacent Alaska Peninsula, southwestern Alaska
Author(s) -
HEUSSER CALVIN J.
Publication year - 1983
Publication title -
boreas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.95
H-Index - 74
eISSN - 1502-3885
pISSN - 0300-9483
DOI - 10.1111/j.1502-3885.1983.tb00322.x
Subject(s) - beringia , pollen , peninsula , tundra , geology , land bridge , radiocarbon dating , vegetation (pathology) , quaternary , peat , palynology , arctic , paleontology , physical geography , archaeology , ecology , oceanography , geography , biological dispersal , medicine , population , demography , pathology , sociology , biology
Pollen diagrams of 10 peat sections taken in sedge tundra span as much as 10.730 radiocarbon years and show a varied sequence of pollen assemblages dominated by herbs and shrubs. Taxa, for the most part. belong to the Gramineae. Cyperaceae. Salix, Abuts, Beiula and Empelrum. The assemblages indicate scral changes in the vegetation, resulting from interaction of climate and of successive ashfalls from regional volcanoes, and suggest a patchwork of late Quaternary plant communities. This record from southernmost Beringia enlarges upon previous pollen records from the Aleutian Islands and from the southern part of the Bering land bridge region in western Alaska.