Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada
The process of the vegetation development on glacier moraines was surveyed in the lower stream area of Oobloyah Valley (80°50'N, 82°45'W), Ellesmere Island, high arctic Canada. Four glacier moraines, and an outwash plane with different establishment periods in the proglacial field of Arkli...
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Faculty of Horticulture, Chiba University
2004
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ftnipr:oai:nipr.repo.nii.ac.jp:00006212 2023-05-15T14:49:21+02:00 Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada Susumu Okitsu Shin-ichi Sawaguchi Hirohiko Hasegawa Hiroshi Kanda 2004-02-01 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6212 http://id.nii.ac.jp/1291/00006212/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6212&item_no=1&attribute_id=18&file_no=1 en eng Faculty of Horticulture, Chiba University Niigata University of International and Information Studies School of Arts and Letters, Meiji University National Institute of Polar research National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6212 http://id.nii.ac.jp/1291/00006212/ AA11327019 Polar bioscience, 17, 83-94(2004-02-01) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6212&item_no=1&attribute_id=18&file_no=1 Cassiope tetragona Dryas integrifolia Ellesmere Island glacier moraine vegetation development Departmental Bulletin Paper P(論文) 2004 ftnipr 2023-03-11T20:21:04Z The process of the vegetation development on glacier moraines was surveyed in the lower stream area of Oobloyah Valley (80°50'N, 82°45'W), Ellesmere Island, high arctic Canada. Four glacier moraines, and an outwash plane with different establishment periods in the proglacial field of Arklio Glacier, were surveyed .The oldest moraine was estimated to have been established during the Full Glacial, ca. 25000-35000 years ago, and the youngest one during the Little Ice Age, ca. 250 years ago. The vegetation properties such as number of species per study plot, cover of vegetation, lichens and bryophytes showed constant increase the moraine age, suggesting directional vegetation development. Changes in the species composition were such that new species successively appeared during the establishment of the moraines without obvious replacement of the species. It was concluded that the manner of the vegetation development was directional-nonreplacement succession even under extreme high arctic environment, differing from the generally accepted view that under an extreme high arctic environment nondirectional-nonreplacement succession prevails. Vegetation physiognomy approached Cassiope tetragona-dominated dwarf shrub heath, which generally prevails in more southern regions than Ellesmere Island. The period required for the vegetation development in the study area was assumed to be quite long, probably at least ca. 20000 years. Report Arctic Cassiope tetragona Ellesmere Island glacier* Polar bioscience National Institute of Polar Research Repository, Japan Arctic Arklio Glacier ENVELOPE(-82.822,-82.822,80.885,80.885) Canada Ellesmere Island |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Cassiope tetragona Dryas integrifolia Ellesmere Island glacier moraine vegetation development |
spellingShingle |
Cassiope tetragona Dryas integrifolia Ellesmere Island glacier moraine vegetation development Susumu Okitsu Shin-ichi Sawaguchi Hirohiko Hasegawa Hiroshi Kanda Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada |
topic_facet |
Cassiope tetragona Dryas integrifolia Ellesmere Island glacier moraine vegetation development |
description |
The process of the vegetation development on glacier moraines was surveyed in the lower stream area of Oobloyah Valley (80°50'N, 82°45'W), Ellesmere Island, high arctic Canada. Four glacier moraines, and an outwash plane with different establishment periods in the proglacial field of Arklio Glacier, were surveyed .The oldest moraine was estimated to have been established during the Full Glacial, ca. 25000-35000 years ago, and the youngest one during the Little Ice Age, ca. 250 years ago. The vegetation properties such as number of species per study plot, cover of vegetation, lichens and bryophytes showed constant increase the moraine age, suggesting directional vegetation development. Changes in the species composition were such that new species successively appeared during the establishment of the moraines without obvious replacement of the species. It was concluded that the manner of the vegetation development was directional-nonreplacement succession even under extreme high arctic environment, differing from the generally accepted view that under an extreme high arctic environment nondirectional-nonreplacement succession prevails. Vegetation physiognomy approached Cassiope tetragona-dominated dwarf shrub heath, which generally prevails in more southern regions than Ellesmere Island. The period required for the vegetation development in the study area was assumed to be quite long, probably at least ca. 20000 years. |
format |
Report |
author |
Susumu Okitsu Shin-ichi Sawaguchi Hirohiko Hasegawa Hiroshi Kanda |
author_facet |
Susumu Okitsu Shin-ichi Sawaguchi Hirohiko Hasegawa Hiroshi Kanda |
author_sort |
Susumu Okitsu |
title |
Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada |
title_short |
Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada |
title_full |
Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada |
title_fullStr |
Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada |
title_full_unstemmed |
Vegetation development on the glacier moraines in Oobloyah Valley, Ellesmere Island high arctic Canada |
title_sort |
vegetation development on the glacier moraines in oobloyah valley, ellesmere island high arctic canada |
publisher |
Faculty of Horticulture, Chiba University |
publishDate |
2004 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6212 http://id.nii.ac.jp/1291/00006212/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6212&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(-82.822,-82.822,80.885,80.885) |
geographic |
Arctic Arklio Glacier Canada Ellesmere Island |
geographic_facet |
Arctic Arklio Glacier Canada Ellesmere Island |
genre |
Arctic Cassiope tetragona Ellesmere Island glacier* Polar bioscience |
genre_facet |
Arctic Cassiope tetragona Ellesmere Island glacier* Polar bioscience |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6212 http://id.nii.ac.jp/1291/00006212/ AA11327019 Polar bioscience, 17, 83-94(2004-02-01) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6212&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766320416742178816 |