Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) 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 ( sed a DNA ). The record covers the period c . 10 700 to 3300 cal. a BP and is complemented by pollen data. Me...
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crwiley:10.1111/bor.12357 2024-09-15T18:06:14+00:00 Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen Clarke, Charlotte L. Edwards, Mary E. Brown, Antony G. Gielly, Ludovic Lammers, Youri Heintzman, Peter D. Ancin‐Murguzur, Francisco Javier Bråthen, Kari‐Anne Goslar, Tomasz Alsos, Inger G. Natural Environment Research Council Norges Forskningsråd 2018 http://dx.doi.org/10.1111/bor.12357 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12357 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12357 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12357 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Boreas volume 48, issue 2, page 299-316 ISSN 0300-9483 1502-3885 journal-article 2018 crwiley https://doi.org/10.1111/bor.12357 2024-07-18T04:22:54Z 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 ( sed a DNA ). The record covers the period c . 10 700 to 3300 cal. a BP and is complemented by pollen data. Measures of species richness, sample evenness and beta diversity were calculated based on sed a DNA 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 c . 10 700 cal. a BP . We infer that postglacial colonization of the area occurred prior to the full Holocene, during the Pleistocene‐Holocene transition, Younger Dryas stadial or earlier. Abundant DNA of the extra‐limital aquatic plant Callitriche hermaphroditica suggests it expanded its range northward between c . 10 200 and 9600 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 cm −2 a −1 between c . 8000 and 7300 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 Wiley Online Library Boreas 48 2 299 316 |
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Wiley Online Library |
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crwiley |
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 ( sed a DNA ). The record covers the period c . 10 700 to 3300 cal. a BP and is complemented by pollen data. Measures of species richness, sample evenness and beta diversity were calculated based on sed a DNA 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 c . 10 700 cal. a BP . We infer that postglacial colonization of the area occurred prior to the full Holocene, during the Pleistocene‐Holocene transition, Younger Dryas stadial or earlier. Abundant DNA of the extra‐limital aquatic plant Callitriche hermaphroditica suggests it expanded its range northward between c . 10 200 and 9600 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 cm −2 a −1 between c . 8000 and 7300 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. |
author2 |
Natural Environment Research Council Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Clarke, Charlotte L. Edwards, Mary E. Brown, Antony G. Gielly, Ludovic Lammers, Youri Heintzman, Peter D. Ancin‐Murguzur, Francisco Javier Bråthen, Kari‐Anne Goslar, Tomasz Alsos, Inger G. |
spellingShingle |
Clarke, Charlotte L. Edwards, Mary E. Brown, Antony G. Gielly, Ludovic Lammers, Youri Heintzman, Peter D. Ancin‐Murguzur, Francisco Javier Bråthen, Kari‐Anne Goslar, Tomasz Alsos, Inger G. Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen |
author_facet |
Clarke, Charlotte L. Edwards, Mary E. Brown, Antony G. Gielly, Ludovic Lammers, Youri Heintzman, Peter D. Ancin‐Murguzur, Francisco Javier Bråthen, Kari‐Anne Goslar, Tomasz Alsos, Inger G. |
author_sort |
Clarke, Charlotte L. |
title |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen |
title_short |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen |
title_full |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen |
title_fullStr |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen |
title_full_unstemmed |
Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (seda DNA) and pollen |
title_sort |
holocene floristic diversity and richness in northeast norway revealed by sedimentary ancient dna (seda dna) and pollen |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/bor.12357 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12357 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12357 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12357 |
genre |
Finnmark Tundra Varanger Finnmark |
genre_facet |
Finnmark Tundra Varanger Finnmark |
op_source |
Boreas volume 48, issue 2, page 299-316 ISSN 0300-9483 1502-3885 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/bor.12357 |
container_title |
Boreas |
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48 |
container_issue |
2 |
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299 |
op_container_end_page |
316 |
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1810443718012960768 |