Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay
The past and present occurrence of insect disturbance on white spruce (Picea glauca) trees was evaluated at their northern range limit on the eastern coast of Hudson Bay, and its effects on tree growth and population dynamics studied. Three sites were sampled along an altitudinal gradient. Ring-widt...
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2008
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Online Access: | http://hdl.handle.net/2434/39789 https://doi.org/10.1111/j.1469-8137.2008.02408.x |
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ftunivmilanoair:oai:air.unimi.it:2434/39789 2024-02-11T10:04:36+01:00 Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay M. Caccianiga S. Payette L. Filion M. Caccianiga S. Payette L. Filion 2008 http://hdl.handle.net/2434/39789 https://doi.org/10.1111/j.1469-8137.2008.02408.x eng eng Blackwell Publishing info:eu-repo/semantics/altIdentifier/pmid/18346107 info:eu-repo/semantics/altIdentifier/wos/WOS:000255722300013 volume:178 issue:4 firstpage:823 lastpage:834 journal:NEW PHYTOLOGIST http://hdl.handle.net/2434/39789 doi:10.1111/j.1469-8137.2008.02408.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-43449123308 Bark beetle Blue-stain fungi Climate change Dendrochronology Picea glauca Subarctic Québec Treeline Settore BIO/02 - Botanica Sistematica info:eu-repo/semantics/article 2008 ftunivmilanoair https://doi.org/10.1111/j.1469-8137.2008.02408.x 2024-01-23T23:17:05Z The past and present occurrence of insect disturbance on white spruce (Picea glauca) trees was evaluated at their northern range limit on the eastern coast of Hudson Bay, and its effects on tree growth and population dynamics studied. Three sites were sampled along an altitudinal gradient. Ring-width chronologies and stem analysis were used to evaluate tree growth. The occurrence of holes in the bark, of resin pockets and blue-stain fungi, and ring-width evidence for growth releases were used to assess the impact of bark beetle. The white spruce population was established at these sites in the 17th century. Since their establishment, the spruce trees have developed a tree growth form, except at the uppermost site, where severe growth suppression occurred in the 19th century. Bark beetle and blue-stain fungi occurred with different timing and intensity. Their highest occurrence, associated with high mortality rates, was at the lowest site in the late 20th century. In the uppermost sites, biotic disturbance has occurred since the 18th century, associated with evidence for mechanical disturbance. The simultaneous arrival of white spruce in the area resulted in a synchronous onset of spruce beetle activity driven by tree ageing. Unfavourable climatic conditions affected tree growth severely in the most exposed sites. Article in Journal/Newspaper Hudson Bay Subarctic The University of Milan: Archivio Istituzionale della Ricerca (AIR) Hudson Bay Hudson New Phytologist 178 4 823 834 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Bark beetle Blue-stain fungi Climate change Dendrochronology Picea glauca Subarctic Québec Treeline Settore BIO/02 - Botanica Sistematica |
spellingShingle |
Bark beetle Blue-stain fungi Climate change Dendrochronology Picea glauca Subarctic Québec Treeline Settore BIO/02 - Botanica Sistematica M. Caccianiga S. Payette L. Filion Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay |
topic_facet |
Bark beetle Blue-stain fungi Climate change Dendrochronology Picea glauca Subarctic Québec Treeline Settore BIO/02 - Botanica Sistematica |
description |
The past and present occurrence of insect disturbance on white spruce (Picea glauca) trees was evaluated at their northern range limit on the eastern coast of Hudson Bay, and its effects on tree growth and population dynamics studied. Three sites were sampled along an altitudinal gradient. Ring-width chronologies and stem analysis were used to evaluate tree growth. The occurrence of holes in the bark, of resin pockets and blue-stain fungi, and ring-width evidence for growth releases were used to assess the impact of bark beetle. The white spruce population was established at these sites in the 17th century. Since their establishment, the spruce trees have developed a tree growth form, except at the uppermost site, where severe growth suppression occurred in the 19th century. Bark beetle and blue-stain fungi occurred with different timing and intensity. Their highest occurrence, associated with high mortality rates, was at the lowest site in the late 20th century. In the uppermost sites, biotic disturbance has occurred since the 18th century, associated with evidence for mechanical disturbance. The simultaneous arrival of white spruce in the area resulted in a synchronous onset of spruce beetle activity driven by tree ageing. Unfavourable climatic conditions affected tree growth severely in the most exposed sites. |
author2 |
M. Caccianiga S. Payette L. Filion |
format |
Article in Journal/Newspaper |
author |
M. Caccianiga S. Payette L. Filion |
author_facet |
M. Caccianiga S. Payette L. Filion |
author_sort |
M. Caccianiga |
title |
Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay |
title_short |
Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay |
title_full |
Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay |
title_fullStr |
Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay |
title_full_unstemmed |
Biotic disturbance in expanding subarctic forests along the eastern coast of Hudson Bay |
title_sort |
biotic disturbance in expanding subarctic forests along the eastern coast of hudson bay |
publisher |
Blackwell Publishing |
publishDate |
2008 |
url |
http://hdl.handle.net/2434/39789 https://doi.org/10.1111/j.1469-8137.2008.02408.x |
geographic |
Hudson Bay Hudson |
geographic_facet |
Hudson Bay Hudson |
genre |
Hudson Bay Subarctic |
genre_facet |
Hudson Bay Subarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/18346107 info:eu-repo/semantics/altIdentifier/wos/WOS:000255722300013 volume:178 issue:4 firstpage:823 lastpage:834 journal:NEW PHYTOLOGIST http://hdl.handle.net/2434/39789 doi:10.1111/j.1469-8137.2008.02408.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-43449123308 |
op_doi |
https://doi.org/10.1111/j.1469-8137.2008.02408.x |
container_title |
New Phytologist |
container_volume |
178 |
container_issue |
4 |
container_start_page |
823 |
op_container_end_page |
834 |
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1790601261699039232 |