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Title: 6000-year record of forest history on Mount Rainier, Washington

Abstract

Sediments in three ponds between 1300 - 1500 m on the south side of Mt. Rainier were examined for plant macrofossils and pollen. Macrofossils of seral species such as Abies lasiocarpa, Pseudotsuga menziesii, Pinus monticola, Abies procera, and Pinus contorta are conspicuous from 6000 to 3400 BP. These species suggest a climate that was warmer/drier than today and favored frequent fires. Neoglacial cooling may have begun 3700-3400 BP, as species typical of higher elevations became prominent; a decline in seral species after 3400 BP suggests less frequent fires. In the last 100 yr, Tsuga heterophylla became abundant and then declined at the highest elevation site. General trends in pollen percentages are similar to the macrofossil curves. Tephra deposition from Mt. Rainier and Mt. St. Helens did not produce conspicuous changes in forest composition. Few major fires are evident from charcoal and macrofossils at these sites.

Authors:
Publication Date:
Research Org.:
Univ. of Washington, Seattle
OSTI Identifier:
5811520
Resource Type:
Journal Article
Journal Name:
Ecology; (United States)
Additional Journal Information:
Journal Volume: 67:1
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CLIMATES; HISTORICAL ASPECTS; FORESTS; FOSSILS; BIOLOGICAL ADAPTATION; MOUNTAINS; PALYNOLOGY; PINES; PONDS; SEDIMENTS; SPRUCES; WASHINGTON; CONIFERS; FEDERAL REGION X; NORTH AMERICA; PLANTS; SURFACE WATERS; TREES; USA; 510100* - Environment, Terrestrial- Basic Studies- (-1989)

Citation Formats

Dunwiddie, P.W. 6000-year record of forest history on Mount Rainier, Washington. United States: N. p., 1986. Web. doi:10.2307/1938503.
Dunwiddie, P.W. 6000-year record of forest history on Mount Rainier, Washington. United States. doi:10.2307/1938503.
Dunwiddie, P.W. Sat . "6000-year record of forest history on Mount Rainier, Washington". United States. doi:10.2307/1938503.
@article{osti_5811520,
title = {6000-year record of forest history on Mount Rainier, Washington},
author = {Dunwiddie, P.W.},
abstractNote = {Sediments in three ponds between 1300 - 1500 m on the south side of Mt. Rainier were examined for plant macrofossils and pollen. Macrofossils of seral species such as Abies lasiocarpa, Pseudotsuga menziesii, Pinus monticola, Abies procera, and Pinus contorta are conspicuous from 6000 to 3400 BP. These species suggest a climate that was warmer/drier than today and favored frequent fires. Neoglacial cooling may have begun 3700-3400 BP, as species typical of higher elevations became prominent; a decline in seral species after 3400 BP suggests less frequent fires. In the last 100 yr, Tsuga heterophylla became abundant and then declined at the highest elevation site. General trends in pollen percentages are similar to the macrofossil curves. Tephra deposition from Mt. Rainier and Mt. St. Helens did not produce conspicuous changes in forest composition. Few major fires are evident from charcoal and macrofossils at these sites.},
doi = {10.2307/1938503},
journal = {Ecology; (United States)},
number = ,
volume = 67:1,
place = {United States},
year = {1986},
month = {2}
}