Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate
1. Snowpatches are disjunct arctic ecosystems scattered across the Subarctic, particularly on wind-protected lee slopes, where a thick snow cover accumulates during the winter. These snow-rich treeless ecosystems are affected by delayed snowmelt, causing shorter growing seasons. Snow-tolerant plants...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:119152 2023-07-02T03:31:34+02:00 Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate Truchon-Savard, Alexandre Jean, Melanie Payette, Serge 2018-12-27T18:11:48.000+01:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-em-knab https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:119152 unknown doi:10.5061/dryad.sf1k4m8/1 doi:10.1111/1365-2745.13123 http://nbn-resolving.org/urn:nbn:nl:ui:13-em-knab doi:10.5061/dryad.sf1k4m8 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:119152 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2018 ftdans https://doi.org/10.5061/dryad.sf1k4m8/110.1111/1365-2745.1312310.5061/dryad.sf1k4m8 2023-06-13T12:53:50Z 1. Snowpatches are disjunct arctic ecosystems scattered across the Subarctic, particularly on wind-protected lee slopes, where a thick snow cover accumulates during the winter. These snow-rich treeless ecosystems are affected by delayed snowmelt, causing shorter growing seasons. Snow-tolerant plants occupy the center of subarctic snowpatches whereas black spruce trees grow at the margins. Snowpatches have shown sporadic expansion and shrinkage phases from tree establishment and mortality linked to climatic trends. Field surveys in the Subarctic of eastern Canada are showing an afforestation process occurring in snowpatches. The origin and nature of this afforestation were investigated based on the hypothesis that tree colonization and growth were closely associated with recent changes in climate. 2. Snowpatches were categorized in three types based on border trees: forested, semi-forested and tundra-like. In eight randomly selected snowpatches of each type, snowpatch borders and areas covered by deciduous shrubs or trees were mapped and chionophilous plants and frost-associated soil disturbances were recorded. Radial (tree-ring ) and vertical growth were measured on stems to evaluate the impact of climate and local factors on snowpatch black spruce populations. 3. Two waves of spruce colonization occurred in all forested and semi-forested snowpatches in the 1960s and in the 1980s to present. Spruce establishment was more frequent and abundant in recent years, near the forest margins and on moss and barren seedbeds. Expanding shrub (dwarf birch) cover inhibited spruce seedling establishment. Tree establishment and growth were positively correlated with growing season temperature and negatively correlated with annual maximum snow depth. More recently established spruce seedlings exhibited faster vertical growth than those established in the 20thcentury. 4. Synthesis: Due to warmer conditions and earlier snowmelt in eastern Canada, black spruce trees and dwarf birch shrubs are racing through subarctic snowpatches. ... Other/Unknown Material Arctic Dwarf birch Subarctic Tundra Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic Canada Frontiers in Water 3 |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Truchon-Savard, Alexandre Jean, Melanie Payette, Serge Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
topic_facet |
Life sciences medicine and health care |
description |
1. Snowpatches are disjunct arctic ecosystems scattered across the Subarctic, particularly on wind-protected lee slopes, where a thick snow cover accumulates during the winter. These snow-rich treeless ecosystems are affected by delayed snowmelt, causing shorter growing seasons. Snow-tolerant plants occupy the center of subarctic snowpatches whereas black spruce trees grow at the margins. Snowpatches have shown sporadic expansion and shrinkage phases from tree establishment and mortality linked to climatic trends. Field surveys in the Subarctic of eastern Canada are showing an afforestation process occurring in snowpatches. The origin and nature of this afforestation were investigated based on the hypothesis that tree colonization and growth were closely associated with recent changes in climate. 2. Snowpatches were categorized in three types based on border trees: forested, semi-forested and tundra-like. In eight randomly selected snowpatches of each type, snowpatch borders and areas covered by deciduous shrubs or trees were mapped and chionophilous plants and frost-associated soil disturbances were recorded. Radial (tree-ring ) and vertical growth were measured on stems to evaluate the impact of climate and local factors on snowpatch black spruce populations. 3. Two waves of spruce colonization occurred in all forested and semi-forested snowpatches in the 1960s and in the 1980s to present. Spruce establishment was more frequent and abundant in recent years, near the forest margins and on moss and barren seedbeds. Expanding shrub (dwarf birch) cover inhibited spruce seedling establishment. Tree establishment and growth were positively correlated with growing season temperature and negatively correlated with annual maximum snow depth. More recently established spruce seedlings exhibited faster vertical growth than those established in the 20thcentury. 4. Synthesis: Due to warmer conditions and earlier snowmelt in eastern Canada, black spruce trees and dwarf birch shrubs are racing through subarctic snowpatches. ... |
author |
Truchon-Savard, Alexandre Jean, Melanie Payette, Serge |
author_facet |
Truchon-Savard, Alexandre Jean, Melanie Payette, Serge |
author_sort |
Truchon-Savard, Alexandre |
title |
Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
title_short |
Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
title_full |
Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
title_fullStr |
Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
title_full_unstemmed |
Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
title_sort |
data from: black spruce (picea mariana) colonization of subarctic snowpatches in response to warmer climate |
publishDate |
2018 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-em-knab https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:119152 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Dwarf birch Subarctic Tundra |
genre_facet |
Arctic Dwarf birch Subarctic Tundra |
op_relation |
doi:10.5061/dryad.sf1k4m8/1 doi:10.1111/1365-2745.13123 http://nbn-resolving.org/urn:nbn:nl:ui:13-em-knab doi:10.5061/dryad.sf1k4m8 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:119152 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.sf1k4m8/110.1111/1365-2745.1312310.5061/dryad.sf1k4m8 |
container_title |
Frontiers in Water |
container_volume |
3 |
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1770270934150676480 |