Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change
Reconstructing past vegetation and species diversity from arctic lake sediments can be challenging because of low pollen and plant macrofossil concentrations. Information may be enhanced by metabarcoding of sedimentary ancient DNA ( sedaDNA). We developed a Holocene record from Lake Skartjørna, Sval...
Published in: | The Holocene |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1177/0959683615612563 https://journals.sagepub.com/doi/pdf/10.1177/0959683615612563 https://journals.sagepub.com/doi/full-xml/10.1177/0959683615612563 |
id |
crsagepubl:10.1177/0959683615612563 |
---|---|
record_format |
openpolar |
spelling |
crsagepubl:10.1177/0959683615612563 2024-10-13T14:05:13+00:00 Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change Alsos, Inger Greve Sjögren, Per Edwards, Mary E Landvik, Jon Y Gielly, Ludovic Forwick, Matthias Coissac, Eric Brown, Antony G Jakobsen, Leif V Føreid, Marie K Pedersen, Mikkel W 2015 http://dx.doi.org/10.1177/0959683615612563 https://journals.sagepub.com/doi/pdf/10.1177/0959683615612563 https://journals.sagepub.com/doi/full-xml/10.1177/0959683615612563 en eng SAGE Publications https://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 26, issue 4, page 627-642 ISSN 0959-6836 1477-0911 journal-article 2015 crsagepubl https://doi.org/10.1177/0959683615612563 2024-09-24T04:14:53Z Reconstructing past vegetation and species diversity from arctic lake sediments can be challenging because of low pollen and plant macrofossil concentrations. Information may be enhanced by metabarcoding of sedimentary ancient DNA ( sedaDNA). We developed a Holocene record from Lake Skartjørna, Svalbard, using sedaDNA, plant macrofossils and sediment properties, and compared it with published records. All but two genera of vascular plants identified as macrofossils in this or a previous study were identified with sedaDNA. Six additional vascular taxa were found, plus two algal and 12 bryophyte taxa, by sedaDNA analysis, which also detected more species per sample than macrofossil analysis. A shift from Salix polaris-dominated vegetation, with Koenigia islandica, Ranunculaceae and the relatively thermophilic species Arabis alpina and Betula, to Dryas octopetala-dominated vegetation ~6600–5500 cal. BP suggests a transition from moist conditions 1–2°C warmer than today to colder/drier conditions. This coincides with a decrease in runoff, inferred from core lithology, and an independent record of declining lacustrine productivity. This mid-Holocene change in terrestrial vegetation is broadly coincident with changes in records from marine sediments off the west coast of Svalbard. Over the Holocene sedaDNA records little floristic change, and it clearly shows species persisted near the lake during time intervals when they are not detected as macrofossils. The flora has shown resilience in the presence of a changing climate, and, if future warming is limited to 2°C or less, we might expect only minor floristic changes in this region. However, the Holocene record provides no analogues for greater warming. Article in Journal/Newspaper Arctic Climate change Dryas octopetala Salix polaris Svalbard SAGE Publications Arctic Svalbard Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Skartjørna ENVELOPE(6.661,6.661,62.539,62.539) The Holocene 26 4 627 642 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
description |
Reconstructing past vegetation and species diversity from arctic lake sediments can be challenging because of low pollen and plant macrofossil concentrations. Information may be enhanced by metabarcoding of sedimentary ancient DNA ( sedaDNA). We developed a Holocene record from Lake Skartjørna, Svalbard, using sedaDNA, plant macrofossils and sediment properties, and compared it with published records. All but two genera of vascular plants identified as macrofossils in this or a previous study were identified with sedaDNA. Six additional vascular taxa were found, plus two algal and 12 bryophyte taxa, by sedaDNA analysis, which also detected more species per sample than macrofossil analysis. A shift from Salix polaris-dominated vegetation, with Koenigia islandica, Ranunculaceae and the relatively thermophilic species Arabis alpina and Betula, to Dryas octopetala-dominated vegetation ~6600–5500 cal. BP suggests a transition from moist conditions 1–2°C warmer than today to colder/drier conditions. This coincides with a decrease in runoff, inferred from core lithology, and an independent record of declining lacustrine productivity. This mid-Holocene change in terrestrial vegetation is broadly coincident with changes in records from marine sediments off the west coast of Svalbard. Over the Holocene sedaDNA records little floristic change, and it clearly shows species persisted near the lake during time intervals when they are not detected as macrofossils. The flora has shown resilience in the presence of a changing climate, and, if future warming is limited to 2°C or less, we might expect only minor floristic changes in this region. However, the Holocene record provides no analogues for greater warming. |
format |
Article in Journal/Newspaper |
author |
Alsos, Inger Greve Sjögren, Per Edwards, Mary E Landvik, Jon Y Gielly, Ludovic Forwick, Matthias Coissac, Eric Brown, Antony G Jakobsen, Leif V Føreid, Marie K Pedersen, Mikkel W |
spellingShingle |
Alsos, Inger Greve Sjögren, Per Edwards, Mary E Landvik, Jon Y Gielly, Ludovic Forwick, Matthias Coissac, Eric Brown, Antony G Jakobsen, Leif V Føreid, Marie K Pedersen, Mikkel W Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change |
author_facet |
Alsos, Inger Greve Sjögren, Per Edwards, Mary E Landvik, Jon Y Gielly, Ludovic Forwick, Matthias Coissac, Eric Brown, Antony G Jakobsen, Leif V Føreid, Marie K Pedersen, Mikkel W |
author_sort |
Alsos, Inger Greve |
title |
Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change |
title_short |
Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change |
title_full |
Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change |
title_fullStr |
Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change |
title_full_unstemmed |
Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change |
title_sort |
sedimentary ancient dna from lake skartjørna, svalbard: assessing the resilience of arctic flora to holocene climate change |
publisher |
SAGE Publications |
publishDate |
2015 |
url |
http://dx.doi.org/10.1177/0959683615612563 https://journals.sagepub.com/doi/pdf/10.1177/0959683615612563 https://journals.sagepub.com/doi/full-xml/10.1177/0959683615612563 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(6.661,6.661,62.539,62.539) |
geographic |
Arctic Svalbard Arctic Lake Skartjørna |
geographic_facet |
Arctic Svalbard Arctic Lake Skartjørna |
genre |
Arctic Climate change Dryas octopetala Salix polaris Svalbard |
genre_facet |
Arctic Climate change Dryas octopetala Salix polaris Svalbard |
op_source |
The Holocene volume 26, issue 4, page 627-642 ISSN 0959-6836 1477-0911 |
op_rights |
https://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683615612563 |
container_title |
The Holocene |
container_volume |
26 |
container_issue |
4 |
container_start_page |
627 |
op_container_end_page |
642 |
_version_ |
1812811283194445824 |