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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Dryad
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Online Access: | https://doi.org/10.5061/dryad.sf1k4m8 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::88a10b4f73dc81042b0d6950056cf745 2023-05-15T15:16:02+02:00 Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate Truchon-Savard, Alexandre Jean, Melanie Payette, Serge 2018-01-01 https://doi.org/10.5061/dryad.sf1k4m8 en eng Dryad http://dx.doi.org/10.5061/dryad.sf1k4m8 https://dx.doi.org/10.5061/dryad.sf1k4m8 lic_creative-commons 10.5061/dryad.sf1k4m8 oai:easy.dans.knaw.nl:easy-dataset:119152 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:119152 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 forest-tundra plant-climate interactions 1950-2010 Holocene treeline tree-ring Subarctic Betula glandulosa Picea mariana snowpatch Life sciences medicine and health care climate change envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2018 fttriple https://doi.org/10.5061/dryad.sf1k4m8 2023-01-22T16:53:15Z 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. ... Dataset Arctic Climate change Dwarf birch Subarctic Tundra Unknown Arctic Canada |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
forest-tundra plant-climate interactions 1950-2010 Holocene treeline tree-ring Subarctic Betula glandulosa Picea mariana snowpatch Life sciences medicine and health care climate change envir geo |
spellingShingle |
forest-tundra plant-climate interactions 1950-2010 Holocene treeline tree-ring Subarctic Betula glandulosa Picea mariana snowpatch Life sciences medicine and health care climate change envir geo Truchon-Savard, Alexandre Jean, Melanie Payette, Serge Data from: Black spruce (Picea mariana) colonization of subarctic snowpatches in response to warmer climate |
topic_facet |
forest-tundra plant-climate interactions 1950-2010 Holocene treeline tree-ring Subarctic Betula glandulosa Picea mariana snowpatch Life sciences medicine and health care climate change envir geo |
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. ... |
format |
Dataset |
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 |
publisher |
Dryad |
publishDate |
2018 |
url |
https://doi.org/10.5061/dryad.sf1k4m8 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change Dwarf birch Subarctic Tundra |
genre_facet |
Arctic Climate change Dwarf birch Subarctic Tundra |
op_source |
10.5061/dryad.sf1k4m8 oai:easy.dans.knaw.nl:easy-dataset:119152 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:119152 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
http://dx.doi.org/10.5061/dryad.sf1k4m8 https://dx.doi.org/10.5061/dryad.sf1k4m8 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.sf1k4m8 |
_version_ |
1766346355957039104 |