Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region
Black spruce trees lean to form “drunken” forest on degrading permafrost; however, the causes of tree leaning on continuous permafrost remain unclear. Leaning events are recorded by reaction wood formation in tree rings, and it remains unclear what soil conditions are required for reaction wood form...
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Taylor & Francis Group
2020
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Online Access: | https://doi.org/10.1080/15230430.2020.1712858 https://doaj.org/article/faf40ceded6d4871bebe044e17606474 |
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ftdoajarticles:oai:doaj.org/article:faf40ceded6d4871bebe044e17606474 2023-05-15T14:14:32+02:00 Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region Kazumichi Fujii Koh Yasue Yojiro Matsuura Akira Osawa 2020-01-01T00:00:00Z https://doi.org/10.1080/15230430.2020.1712858 https://doaj.org/article/faf40ceded6d4871bebe044e17606474 EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15230430.2020.1712858 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2020.1712858 https://doaj.org/article/faf40ceded6d4871bebe044e17606474 Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 47-59 (2020) active layer earth hummock frost heaving gelisols thermokarst Environmental sciences GE1-350 Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.1080/15230430.2020.1712858 2022-12-31T06:17:55Z Black spruce trees lean to form “drunken” forest on degrading permafrost; however, the causes of tree leaning on continuous permafrost remain unclear. Leaning events are recorded by reaction wood formation in tree rings, and it remains unclear what soil conditions are required for reaction wood formation of drunken trees. Tree disk morphology and soil hummock properties were examined for fifty tree–mound combinations in Northwest Territories, Canada. Spruce trees growing on mound edges form reaction wood on the downslope sides of their trunks. Reaction wood formation in mature trees was greatest in stem tissues between ground level and 30 cm aboveground. Reaction wood formation occurred only in trees growing on mound edges. The extent of reaction wood formation was higher in trees growing in clayey soils than in trees on sandy soils. For trees growing on clayey mound edges, the extent of reaction wood formation decreased with increasing permafrost table depth. Black spruce tree rings formed between ground level and 30 cm aboveground could record movement of clayey soil hummocks over shallow, underlying permafrost tables. A combination of clayey soil texture and shallow permafrost table is likely required for development of hummocks and drunken forests on the continuous permafrost region studied. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Northwest Territories permafrost Thermokarst Directory of Open Access Journals: DOAJ Articles Northwest Territories Canada Arctic, Antarctic, and Alpine Research 52 1 47 59 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
active layer earth hummock frost heaving gelisols thermokarst Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
active layer earth hummock frost heaving gelisols thermokarst Environmental sciences GE1-350 Ecology QH540-549.5 Kazumichi Fujii Koh Yasue Yojiro Matsuura Akira Osawa Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
topic_facet |
active layer earth hummock frost heaving gelisols thermokarst Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Black spruce trees lean to form “drunken” forest on degrading permafrost; however, the causes of tree leaning on continuous permafrost remain unclear. Leaning events are recorded by reaction wood formation in tree rings, and it remains unclear what soil conditions are required for reaction wood formation of drunken trees. Tree disk morphology and soil hummock properties were examined for fifty tree–mound combinations in Northwest Territories, Canada. Spruce trees growing on mound edges form reaction wood on the downslope sides of their trunks. Reaction wood formation in mature trees was greatest in stem tissues between ground level and 30 cm aboveground. Reaction wood formation occurred only in trees growing on mound edges. The extent of reaction wood formation was higher in trees growing in clayey soils than in trees on sandy soils. For trees growing on clayey mound edges, the extent of reaction wood formation decreased with increasing permafrost table depth. Black spruce tree rings formed between ground level and 30 cm aboveground could record movement of clayey soil hummocks over shallow, underlying permafrost tables. A combination of clayey soil texture and shallow permafrost table is likely required for development of hummocks and drunken forests on the continuous permafrost region studied. |
format |
Article in Journal/Newspaper |
author |
Kazumichi Fujii Koh Yasue Yojiro Matsuura Akira Osawa |
author_facet |
Kazumichi Fujii Koh Yasue Yojiro Matsuura Akira Osawa |
author_sort |
Kazumichi Fujii |
title |
Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
title_short |
Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
title_full |
Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
title_fullStr |
Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
title_full_unstemmed |
Soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
title_sort |
soil conditions required for reaction wood formation of drunken trees in a continuous permafrost region |
publisher |
Taylor & Francis Group |
publishDate |
2020 |
url |
https://doi.org/10.1080/15230430.2020.1712858 https://doaj.org/article/faf40ceded6d4871bebe044e17606474 |
geographic |
Northwest Territories Canada |
geographic_facet |
Northwest Territories Canada |
genre |
Antarctic and Alpine Research Arctic Northwest Territories permafrost Thermokarst |
genre_facet |
Antarctic and Alpine Research Arctic Northwest Territories permafrost Thermokarst |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 52, Iss 1, Pp 47-59 (2020) |
op_relation |
http://dx.doi.org/10.1080/15230430.2020.1712858 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2020.1712858 https://doaj.org/article/faf40ceded6d4871bebe044e17606474 |
op_doi |
https://doi.org/10.1080/15230430.2020.1712858 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
52 |
container_issue |
1 |
container_start_page |
47 |
op_container_end_page |
59 |
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1766286949365055488 |