Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska
At Phalarope Pond, western Kodiak Island, a multidisciplinary study using pollen and spores, macrofossils, stable isotopes, and carbon accumulation provides the Holocene vegetation and climate history following the deglaciation that began over 16,000 cal years ago (yr BP) [years Before Present, as c...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20190003891 2023-05-15T17:04:38+02:00 Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska Nichols, Jonathan E. Mann, Daniel H. Peteet, Dorothy M. Unclassified, Unlimited, Publicly available April 9, 2019 application/pdf http://hdl.handle.net/2060/20190003891 unknown Document ID: 20190003891 http://hdl.handle.net/2060/20190003891 Copyright, Use by or on behalf of the U.S. Government permitted CASI Meteorology and Climatology GSFC-E-DAA-TN67015 Frontiers in Earth Science: Quaternary Science, Geomorphology and Paleoenvironment (e-ISSN 2296-6463); 7; 61 2019 ftnasantrs 2019-06-01T22:53:34Z At Phalarope Pond, western Kodiak Island, a multidisciplinary study using pollen and spores, macrofossils, stable isotopes, and carbon accumulation provides the Holocene vegetation and climate history following the deglaciation that began over 16,000 cal years ago (yr BP) [years Before Present, as calibrated from 1950]. Following a cold and dry Younger Dryas, a warm and wet early Holocene was characterized by abundant ferns in a sedge tundra environment with maximum carbon accumulation, similar to high latitude peatlands globally. About 8,700 cal yr BP sedge and ferns declined and climate remained warm as drier conditions prevailed, limiting carbon sequestration. The abrupt shift in D/H (Deuterium/Hydrogen) isotopes of about 60 percent indicates a shift to cooler conditions or a more distal moisture source. Neoglaciation beginning about 3,700 cal yr BP is evident from increases in Artemisia, Empetrum and Betula, signifying cooler conditions, while Alnus declines, paralleling regional trends. Other/Unknown Material Kodiak Tundra Alaska NASA Technical Reports Server (NTRS) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Nichols, Jonathan E. Mann, Daniel H. Peteet, Dorothy M. Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska |
topic_facet |
Meteorology and Climatology |
description |
At Phalarope Pond, western Kodiak Island, a multidisciplinary study using pollen and spores, macrofossils, stable isotopes, and carbon accumulation provides the Holocene vegetation and climate history following the deglaciation that began over 16,000 cal years ago (yr BP) [years Before Present, as calibrated from 1950]. Following a cold and dry Younger Dryas, a warm and wet early Holocene was characterized by abundant ferns in a sedge tundra environment with maximum carbon accumulation, similar to high latitude peatlands globally. About 8,700 cal yr BP sedge and ferns declined and climate remained warm as drier conditions prevailed, limiting carbon sequestration. The abrupt shift in D/H (Deuterium/Hydrogen) isotopes of about 60 percent indicates a shift to cooler conditions or a more distal moisture source. Neoglaciation beginning about 3,700 cal yr BP is evident from increases in Artemisia, Empetrum and Betula, signifying cooler conditions, while Alnus declines, paralleling regional trends. |
format |
Other/Unknown Material |
author |
Nichols, Jonathan E. Mann, Daniel H. Peteet, Dorothy M. |
author_facet |
Nichols, Jonathan E. Mann, Daniel H. Peteet, Dorothy M. |
author_sort |
Nichols, Jonathan E. |
title |
Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska |
title_short |
Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska |
title_full |
Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska |
title_fullStr |
Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska |
title_full_unstemmed |
Holocene Vegetation, Climate, and Carbon History on Western Kodiak Island, Alaska |
title_sort |
holocene vegetation, climate, and carbon history on western kodiak island, alaska |
publishDate |
2019 |
url |
http://hdl.handle.net/2060/20190003891 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Kodiak Tundra Alaska |
genre_facet |
Kodiak Tundra Alaska |
op_source |
CASI |
op_relation |
Document ID: 20190003891 http://hdl.handle.net/2060/20190003891 |
op_rights |
Copyright, Use by or on behalf of the U.S. Government permitted |
_version_ |
1766058936598790144 |