Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA
Rates of spruce (Picea engelmannii) and fir (Abies lasicocarpa) tree—island migration were estimated by radiocarbon dating the trails of dead wood left by three krummholz tree islands as they moved downwind across the forest—tundra ecotone on Niwot Ridge, Colorado Front Range. The leeward ends of th...
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Online Access: | http://dx.doi.org/10.2307/1938055 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1938055 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1938055 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1938055 |
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crwiley:10.2307/1938055 2024-10-06T13:53:15+00:00 Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA Benedict, James B. 1984 http://dx.doi.org/10.2307/1938055 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1938055 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1938055 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1938055 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology volume 65, issue 3, page 820-823 ISSN 0012-9658 1939-9170 journal-article 1984 crwiley https://doi.org/10.2307/1938055 2024-09-23T04:37:18Z Rates of spruce (Picea engelmannii) and fir (Abies lasicocarpa) tree—island migration were estimated by radiocarbon dating the trails of dead wood left by three krummholz tree islands as they moved downwind across the forest—tundra ecotone on Niwot Ridge, Colorado Front Range. The leeward ends of the tree islands have expanded eastward at average rates of 1.5 to <2.6 cm/yr due to rooting of low horizontal branches; the windward ends of the tree islands have receded eastward at average rates of 0.9 to 1.9 cm/yr due to needle death by freezing or desiccation. The trees are in equilibrium with their environments, or are becoming elongated. Long—term movement rates determined by radiocarbon dating are lower than short—term rates estimated from annual measurements of leeward shoot growth. Changes in the direction of tree—island migration with time show no consistent trends that can be used to reconstruct past changes in winter wind direction. Errors in archaeological radiocarbon dates resulting from prehistoric use of old tree—island wood for fuel are unlikely to exceed 100 yr in the Front Range timberline environment. Article in Journal/Newspaper Tundra Wiley Online Library Ecology 65 3 820 823 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Rates of spruce (Picea engelmannii) and fir (Abies lasicocarpa) tree—island migration were estimated by radiocarbon dating the trails of dead wood left by three krummholz tree islands as they moved downwind across the forest—tundra ecotone on Niwot Ridge, Colorado Front Range. The leeward ends of the tree islands have expanded eastward at average rates of 1.5 to <2.6 cm/yr due to rooting of low horizontal branches; the windward ends of the tree islands have receded eastward at average rates of 0.9 to 1.9 cm/yr due to needle death by freezing or desiccation. The trees are in equilibrium with their environments, or are becoming elongated. Long—term movement rates determined by radiocarbon dating are lower than short—term rates estimated from annual measurements of leeward shoot growth. Changes in the direction of tree—island migration with time show no consistent trends that can be used to reconstruct past changes in winter wind direction. Errors in archaeological radiocarbon dates resulting from prehistoric use of old tree—island wood for fuel are unlikely to exceed 100 yr in the Front Range timberline environment. |
format |
Article in Journal/Newspaper |
author |
Benedict, James B. |
spellingShingle |
Benedict, James B. Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA |
author_facet |
Benedict, James B. |
author_sort |
Benedict, James B. |
title |
Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA |
title_short |
Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA |
title_full |
Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA |
title_fullStr |
Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA |
title_full_unstemmed |
Rates of Tree‐Island Migration, Colorado Rocky Mountains, USA |
title_sort |
rates of tree‐island migration, colorado rocky mountains, usa |
publisher |
Wiley |
publishDate |
1984 |
url |
http://dx.doi.org/10.2307/1938055 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1938055 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1938055 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1938055 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Ecology volume 65, issue 3, page 820-823 ISSN 0012-9658 1939-9170 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2307/1938055 |
container_title |
Ecology |
container_volume |
65 |
container_issue |
3 |
container_start_page |
820 |
op_container_end_page |
823 |
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1812181924634951680 |