Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone
Shifts in the extent of the boreal forest during past warm intervals and correlations between climate and the position of the forest–tundra ecotone suggest that recent temperature increases will facilitate forest expansion into tundra ecosystems. In this study, we used a unique set of high-resolutio...
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Online Access: | https://doi.org/10.1139/as-2018-0012 https://doaj.org/article/b9569e567685432d97dcaac71709e94c |
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ftdoajarticles:oai:doaj.org/article:b9569e567685432d97dcaac71709e94c 2023-05-15T14:23:43+02:00 Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone Trevor C. Lantz Nina D. Moffat Robert H. Fraser Xanthe Walker 2019-12-01T00:00:00Z https://doi.org/10.1139/as-2018-0012 https://doaj.org/article/b9569e567685432d97dcaac71709e94c EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2018-0012 https://doaj.org/toc/2368-7460 doi:10.1139/as-2018-0012 2368-7460 https://doaj.org/article/b9569e567685432d97dcaac71709e94c Arctic Science, Vol 5, Iss 4, Pp 167-184 (2019) treeline vegetation change air photographs climate change arctic boreal subarctic tundra Environmental sciences GE1-350 Environmental engineering TA170-171 article 2019 ftdoajarticles https://doi.org/10.1139/as-2018-0012 2022-12-31T07:55:57Z Shifts in the extent of the boreal forest during past warm intervals and correlations between climate and the position of the forest–tundra ecotone suggest that recent temperature increases will facilitate forest expansion into tundra ecosystems. In this study, we used a unique set of high-resolution repeat photographs to characterize white spruce (Picea glauca (Moench) Voss) populations in 1980 and 2015 at 52 sites across the forest–tundra transition in the Northwest Territories, Canada. We also conducted field inventories at eight sites to examine mapping accuracy, construct age distributions, and assess cone production and seed viability. Our analysis shows that stand density in the forest–tundra has increased significantly since 1980 but that the density of spruce at sites in the tundra has not changed. Age distributions constructed from field sampling also indicate that recent recruitment has occurred in the forest–tundra but not at tundra sites. The nonlinear relationship between summer temperature and seed viability suggests that recent warming has facilitated recruitment in the northern Subarctic but that cold temperatures still limit recruitment at higher latitude tundra sites. Additional research to determine the extent of changes in forest density across the northern Subarctic should be conducted to determine if similar changes are occurring across this ecotone. Article in Journal/Newspaper Arctic Arctic Climate change Northwest Territories Subarctic Tundra Directory of Open Access Journals: DOAJ Articles Arctic Canada Northwest Territories Arctic Science 5 4 167 184 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
treeline vegetation change air photographs climate change arctic boreal subarctic tundra Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
treeline vegetation change air photographs climate change arctic boreal subarctic tundra Environmental sciences GE1-350 Environmental engineering TA170-171 Trevor C. Lantz Nina D. Moffat Robert H. Fraser Xanthe Walker Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone |
topic_facet |
treeline vegetation change air photographs climate change arctic boreal subarctic tundra Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Shifts in the extent of the boreal forest during past warm intervals and correlations between climate and the position of the forest–tundra ecotone suggest that recent temperature increases will facilitate forest expansion into tundra ecosystems. In this study, we used a unique set of high-resolution repeat photographs to characterize white spruce (Picea glauca (Moench) Voss) populations in 1980 and 2015 at 52 sites across the forest–tundra transition in the Northwest Territories, Canada. We also conducted field inventories at eight sites to examine mapping accuracy, construct age distributions, and assess cone production and seed viability. Our analysis shows that stand density in the forest–tundra has increased significantly since 1980 but that the density of spruce at sites in the tundra has not changed. Age distributions constructed from field sampling also indicate that recent recruitment has occurred in the forest–tundra but not at tundra sites. The nonlinear relationship between summer temperature and seed viability suggests that recent warming has facilitated recruitment in the northern Subarctic but that cold temperatures still limit recruitment at higher latitude tundra sites. Additional research to determine the extent of changes in forest density across the northern Subarctic should be conducted to determine if similar changes are occurring across this ecotone. |
format |
Article in Journal/Newspaper |
author |
Trevor C. Lantz Nina D. Moffat Robert H. Fraser Xanthe Walker |
author_facet |
Trevor C. Lantz Nina D. Moffat Robert H. Fraser Xanthe Walker |
author_sort |
Trevor C. Lantz |
title |
Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone |
title_short |
Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone |
title_full |
Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone |
title_fullStr |
Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone |
title_full_unstemmed |
Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone |
title_sort |
reproductive limitation mediates the response of white spruce (picea glauca) to climate warming across the forest–tundra ecotone |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
https://doi.org/10.1139/as-2018-0012 https://doaj.org/article/b9569e567685432d97dcaac71709e94c |
geographic |
Arctic Canada Northwest Territories |
geographic_facet |
Arctic Canada Northwest Territories |
genre |
Arctic Arctic Climate change Northwest Territories Subarctic Tundra |
genre_facet |
Arctic Arctic Climate change Northwest Territories Subarctic Tundra |
op_source |
Arctic Science, Vol 5, Iss 4, Pp 167-184 (2019) |
op_relation |
https://doi.org/10.1139/as-2018-0012 https://doaj.org/toc/2368-7460 doi:10.1139/as-2018-0012 2368-7460 https://doaj.org/article/b9569e567685432d97dcaac71709e94c |
op_doi |
https://doi.org/10.1139/as-2018-0012 |
container_title |
Arctic Science |
container_volume |
5 |
container_issue |
4 |
container_start_page |
167 |
op_container_end_page |
184 |
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1766296194336686080 |