Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen
We present a Holocene record of floristic diversity and environmental change for the central Varanger Peninsula, Finnmark, based on ancient DNA extracted from the sediments of a small lake (sedaDNA). The record covers the period ca. 10,700 to 3,300 cal. a BP and is complemented by pollen data. Measu...
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ftsouthampton:oai:eprints.soton.ac.uk:424240 2023-07-30T04:03:29+02:00 Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen Clarke, Charlotte Edwards, Mary Brown, Antony Gielly, Ludovic Lammers, Youri Heintzman, Peter Ancin-Murguzur, Xavier Bråthen, Kari-Anne Goslar, Tomasz Alsos, Inger 2018-10-30 text https://eprints.soton.ac.uk/424240/ https://eprints.soton.ac.uk/424240/1/Clarke_accepted_manuscript_plantDNA_BOREAS.docx https://eprints.soton.ac.uk/424240/2/Clarke_et_al_2018_Boreas.pdf en English eng https://eprints.soton.ac.uk/424240/1/Clarke_accepted_manuscript_plantDNA_BOREAS.docx https://eprints.soton.ac.uk/424240/2/Clarke_et_al_2018_Boreas.pdf Clarke, Charlotte, Edwards, Mary, Brown, Antony, Gielly, Ludovic, Lammers, Youri, Heintzman, Peter, Ancin-Murguzur, Xavier, Bråthen, Kari-Anne, Goslar, Tomasz and Alsos, Inger (2018) Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen. Boreas. (doi:10.1111/bor.12357 <http://dx.doi.org/10.1111/bor.12357>). cc_by_nc_nd_4 cc_by_4 Article PeerReviewed 2018 ftsouthampton https://doi.org/10.1111/bor.12357 2023-07-09T22:24:55Z We present a Holocene record of floristic diversity and environmental change for the central Varanger Peninsula, Finnmark, based on ancient DNA extracted from the sediments of a small lake (sedaDNA). The record covers the period ca. 10,700 to 3,300 cal. a BP and is complemented by pollen data. Measures of species richness, sample evenness, and beta-diversity were calculated based on sedaDNA sampling intervals and 1000-year time windows. We identified 101 vascular plant and 17 bryophyte taxa, a high proportion (86 %) of which are still growing within the region today. The high species richness (>60 taxa) observed in the early-Holocene, including representatives from all important plant functional groups, shows that modern shrub-tundra communities, and much of their species complement, were in place as early as ca. 10,700 cal. a BP. We infer that post-glacial colonisation of the area occurred prior to the Holocene, during the Younger Dryas stadial or earlier. Abundant DNA of the extra-limital aquatic plant Callitriche hermaphroditica suggests it expanded its range northward between ca. 10,200 and 9,600 cal. a BP, when summers were warmer than present. High values of Pinus DNA occur throughout the record, but we cannot say with certainty if they represent prior local presence; however, pollen influx values >500 grains/cm2/a-1 between ca. 8,000 and 7,300 cal. a BP strongly suggest the presence of pine woodland during this period. As the site lies beyond the modern tree limit of pine, it is likely that this expansion also reflects a response to warmer early-Holocene summers. Article in Journal/Newspaper Finnmark Tundra Varanger Finnmark University of Southampton: e-Prints Soton Norway Boreas 48 2 299 316 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
We present a Holocene record of floristic diversity and environmental change for the central Varanger Peninsula, Finnmark, based on ancient DNA extracted from the sediments of a small lake (sedaDNA). The record covers the period ca. 10,700 to 3,300 cal. a BP and is complemented by pollen data. Measures of species richness, sample evenness, and beta-diversity were calculated based on sedaDNA sampling intervals and 1000-year time windows. We identified 101 vascular plant and 17 bryophyte taxa, a high proportion (86 %) of which are still growing within the region today. The high species richness (>60 taxa) observed in the early-Holocene, including representatives from all important plant functional groups, shows that modern shrub-tundra communities, and much of their species complement, were in place as early as ca. 10,700 cal. a BP. We infer that post-glacial colonisation of the area occurred prior to the Holocene, during the Younger Dryas stadial or earlier. Abundant DNA of the extra-limital aquatic plant Callitriche hermaphroditica suggests it expanded its range northward between ca. 10,200 and 9,600 cal. a BP, when summers were warmer than present. High values of Pinus DNA occur throughout the record, but we cannot say with certainty if they represent prior local presence; however, pollen influx values >500 grains/cm2/a-1 between ca. 8,000 and 7,300 cal. a BP strongly suggest the presence of pine woodland during this period. As the site lies beyond the modern tree limit of pine, it is likely that this expansion also reflects a response to warmer early-Holocene summers. |
format |
Article in Journal/Newspaper |
author |
Clarke, Charlotte Edwards, Mary Brown, Antony Gielly, Ludovic Lammers, Youri Heintzman, Peter Ancin-Murguzur, Xavier Bråthen, Kari-Anne Goslar, Tomasz Alsos, Inger |
spellingShingle |
Clarke, Charlotte Edwards, Mary Brown, Antony Gielly, Ludovic Lammers, Youri Heintzman, Peter Ancin-Murguzur, Xavier Bråthen, Kari-Anne Goslar, Tomasz Alsos, Inger Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen |
author_facet |
Clarke, Charlotte Edwards, Mary Brown, Antony Gielly, Ludovic Lammers, Youri Heintzman, Peter Ancin-Murguzur, Xavier Bråthen, Kari-Anne Goslar, Tomasz Alsos, Inger |
author_sort |
Clarke, Charlotte |
title |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen |
title_short |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen |
title_full |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen |
title_fullStr |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen |
title_full_unstemmed |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen |
title_sort |
holocene floristic diversity and richness in northeast norway revealed by sedimentary ancient dna (sedadna) and pollen |
publishDate |
2018 |
url |
https://eprints.soton.ac.uk/424240/ https://eprints.soton.ac.uk/424240/1/Clarke_accepted_manuscript_plantDNA_BOREAS.docx https://eprints.soton.ac.uk/424240/2/Clarke_et_al_2018_Boreas.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Finnmark Tundra Varanger Finnmark |
genre_facet |
Finnmark Tundra Varanger Finnmark |
op_relation |
https://eprints.soton.ac.uk/424240/1/Clarke_accepted_manuscript_plantDNA_BOREAS.docx https://eprints.soton.ac.uk/424240/2/Clarke_et_al_2018_Boreas.pdf Clarke, Charlotte, Edwards, Mary, Brown, Antony, Gielly, Ludovic, Lammers, Youri, Heintzman, Peter, Ancin-Murguzur, Xavier, Bråthen, Kari-Anne, Goslar, Tomasz and Alsos, Inger (2018) Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen. Boreas. (doi:10.1111/bor.12357 <http://dx.doi.org/10.1111/bor.12357>). |
op_rights |
cc_by_nc_nd_4 cc_by_4 |
op_doi |
https://doi.org/10.1111/bor.12357 |
container_title |
Boreas |
container_volume |
48 |
container_issue |
2 |
container_start_page |
299 |
op_container_end_page |
316 |
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1772814497419886592 |