Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate
Disentangling the effects of glaciers and climate on vegetation is complicated by the confounding role that climate plays in both systems. We reconstructed changes in vegetation occurring over the Holocene at Jøkelvatnet, a lake located directly downstream from the Langfjordjøkel glacier in northern...
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Online Access: | https://hdl.handle.net/11250/3061916 https://doi.org/10.3390/quat6010007 |
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ftunivbergen:oai:bora.uib.no:11250/3061916 2023-05-15T15:09:24+02:00 Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate Elliott, Lucas Dane Rijal, Dilli Prasad Brown, Antony Bakke, Jostein Topstad, Lasse Heintzman, Peter D. Alsos, Inger Greve 2023 application/pdf https://hdl.handle.net/11250/3061916 https://doi.org/10.3390/quat6010007 eng eng MDPI urn:issn:2571-550X https://hdl.handle.net/11250/3061916 https://doi.org/10.3390/quat6010007 cristin:2128635 Quaternary. 2023, 6, 7. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) 7 Quaternary 6 Journal article Peer reviewed 2023 ftunivbergen https://doi.org/10.3390/quat6010007 2023-04-05T23:05:47Z Disentangling the effects of glaciers and climate on vegetation is complicated by the confounding role that climate plays in both systems. We reconstructed changes in vegetation occurring over the Holocene at Jøkelvatnet, a lake located directly downstream from the Langfjordjøkel glacier in northern Norway. We used a sedimentary ancient DNA (sedaDNA) metabarcoding dataset of 38 samples from a lake sediment core spanning 10,400 years using primers targeting the P6 loop of the trnL (UAA) intron. A total of 193 plant taxa were identified revealing a pattern of continually increasing richness over the time period. Vegetation surveys conducted around Jøkelvatnet show a high concordance with the taxa identified through sedaDNA metabarcoding. We identified four distinct vegetation assemblage zones with transitions at ca. 9.7, 8.4 and 4.3 ka with the first and last mirroring climatic shifts recorded by the Langfjordjøkel glacier. Soil disturbance trait values of the vegetation increased with glacial activity, suggesting that the glacier had a direct impact on plants growing in the catchment. Temperature optimum and moisture trait values correlated with both glacial activity and reconstructed climatic variables showing direct and indirect effects of climate change on the vegetation. In contrast to other catchments without an active glacier, the vegetation at Jøkelvatnet has displayed an increased sensitivity to climate change throughout the Middle and Late Holocene. Beyond the direct impact of climate change on arctic and alpine vegetation, our results suggest the ongoing disappearance of glaciers will have an additional effect on plant communities. publishedVersion Article in Journal/Newspaper Arctic Climate change glacier Northern Norway University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Norway Quaternary 6 1 7 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Disentangling the effects of glaciers and climate on vegetation is complicated by the confounding role that climate plays in both systems. We reconstructed changes in vegetation occurring over the Holocene at Jøkelvatnet, a lake located directly downstream from the Langfjordjøkel glacier in northern Norway. We used a sedimentary ancient DNA (sedaDNA) metabarcoding dataset of 38 samples from a lake sediment core spanning 10,400 years using primers targeting the P6 loop of the trnL (UAA) intron. A total of 193 plant taxa were identified revealing a pattern of continually increasing richness over the time period. Vegetation surveys conducted around Jøkelvatnet show a high concordance with the taxa identified through sedaDNA metabarcoding. We identified four distinct vegetation assemblage zones with transitions at ca. 9.7, 8.4 and 4.3 ka with the first and last mirroring climatic shifts recorded by the Langfjordjøkel glacier. Soil disturbance trait values of the vegetation increased with glacial activity, suggesting that the glacier had a direct impact on plants growing in the catchment. Temperature optimum and moisture trait values correlated with both glacial activity and reconstructed climatic variables showing direct and indirect effects of climate change on the vegetation. In contrast to other catchments without an active glacier, the vegetation at Jøkelvatnet has displayed an increased sensitivity to climate change throughout the Middle and Late Holocene. Beyond the direct impact of climate change on arctic and alpine vegetation, our results suggest the ongoing disappearance of glaciers will have an additional effect on plant communities. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Elliott, Lucas Dane Rijal, Dilli Prasad Brown, Antony Bakke, Jostein Topstad, Lasse Heintzman, Peter D. Alsos, Inger Greve |
spellingShingle |
Elliott, Lucas Dane Rijal, Dilli Prasad Brown, Antony Bakke, Jostein Topstad, Lasse Heintzman, Peter D. Alsos, Inger Greve Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate |
author_facet |
Elliott, Lucas Dane Rijal, Dilli Prasad Brown, Antony Bakke, Jostein Topstad, Lasse Heintzman, Peter D. Alsos, Inger Greve |
author_sort |
Elliott, Lucas Dane |
title |
Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate |
title_short |
Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate |
title_full |
Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate |
title_fullStr |
Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate |
title_full_unstemmed |
Sedimentary ancient DNA reveals local vegetation changes driven by glacial activity and climate |
title_sort |
sedimentary ancient dna reveals local vegetation changes driven by glacial activity and climate |
publisher |
MDPI |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3061916 https://doi.org/10.3390/quat6010007 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Climate change glacier Northern Norway |
genre_facet |
Arctic Climate change glacier Northern Norway |
op_source |
7 Quaternary 6 |
op_relation |
urn:issn:2571-550X https://hdl.handle.net/11250/3061916 https://doi.org/10.3390/quat6010007 cristin:2128635 Quaternary. 2023, 6, 7. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) |
op_doi |
https://doi.org/10.3390/quat6010007 |
container_title |
Quaternary |
container_volume |
6 |
container_issue |
1 |
container_start_page |
7 |
_version_ |
1766340598993780736 |