Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada
We studied the wood structure of eastern larch (Larixlaricina (Du Roi) K. Koch) affected by a larch sawfly (Pristiphoraerichsonii (Htg.)) infestation that occurred in 1939 in the Lac à l'Eau-Claire and Rivière-aux-Mélèzes areas, subarctic Quebec. The objective was to document variation in wood...
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Language: | English |
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Canadian Science Publishing
1995
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Online Access: | http://dx.doi.org/10.1139/x95-139 http://www.nrcresearchpress.com/doi/pdf/10.1139/x95-139 |
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crcansciencepubl:10.1139/x95-139 2024-09-15T18:37:54+00:00 Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada Filion, Louise Cournoyer, Luc 1995 http://dx.doi.org/10.1139/x95-139 http://www.nrcresearchpress.com/doi/pdf/10.1139/x95-139 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Forest Research volume 25, issue 8, page 1263-1268 ISSN 0045-5067 1208-6037 journal-article 1995 crcansciencepubl https://doi.org/10.1139/x95-139 2024-07-11T04:12:00Z We studied the wood structure of eastern larch (Larixlaricina (Du Roi) K. Koch) affected by a larch sawfly (Pristiphoraerichsonii (Htg.)) infestation that occurred in 1939 in the Lac à l'Eau-Claire and Rivière-aux-Mélèzes areas, subarctic Quebec. The objective was to document variation in wood characteristics in relation to defoliation at three study sites. Lumen diameter of tracheids and cell wall thickness were measured from thin sections representing the 1931–1955 period. Significant changes in the wood structure of larch was noticed only at the Atkinson Island site, where the radial growth pattern was typical of the insect activity. A light ring was formed the 1st year of the infestation (1939). During the 2nd year (1940), the size of tracheids (lumen) decreased abruptly along with radial growth, while the proportion of latewood increased. The variation in wood anatomy among the three study sites paralleled that in radial growth. Wood structure appears to be a good indicator of the end of an infestation. Article in Journal/Newspaper Subarctic Canadian Science Publishing Canadian Journal of Forest Research 25 8 1263 1268 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
We studied the wood structure of eastern larch (Larixlaricina (Du Roi) K. Koch) affected by a larch sawfly (Pristiphoraerichsonii (Htg.)) infestation that occurred in 1939 in the Lac à l'Eau-Claire and Rivière-aux-Mélèzes areas, subarctic Quebec. The objective was to document variation in wood characteristics in relation to defoliation at three study sites. Lumen diameter of tracheids and cell wall thickness were measured from thin sections representing the 1931–1955 period. Significant changes in the wood structure of larch was noticed only at the Atkinson Island site, where the radial growth pattern was typical of the insect activity. A light ring was formed the 1st year of the infestation (1939). During the 2nd year (1940), the size of tracheids (lumen) decreased abruptly along with radial growth, while the proportion of latewood increased. The variation in wood anatomy among the three study sites paralleled that in radial growth. Wood structure appears to be a good indicator of the end of an infestation. |
format |
Article in Journal/Newspaper |
author |
Filion, Louise Cournoyer, Luc |
spellingShingle |
Filion, Louise Cournoyer, Luc Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada |
author_facet |
Filion, Louise Cournoyer, Luc |
author_sort |
Filion, Louise |
title |
Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada |
title_short |
Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada |
title_full |
Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada |
title_fullStr |
Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada |
title_full_unstemmed |
Variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic Quebec, Canada |
title_sort |
variation in wood structure of eastern larch defoliated by the larch sawfly in subarctic quebec, canada |
publisher |
Canadian Science Publishing |
publishDate |
1995 |
url |
http://dx.doi.org/10.1139/x95-139 http://www.nrcresearchpress.com/doi/pdf/10.1139/x95-139 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Canadian Journal of Forest Research volume 25, issue 8, page 1263-1268 ISSN 0045-5067 1208-6037 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/x95-139 |
container_title |
Canadian Journal of Forest Research |
container_volume |
25 |
container_issue |
8 |
container_start_page |
1263 |
op_container_end_page |
1268 |
_version_ |
1810482250164207616 |