A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard
Arctic hotspots, local areas of high biodiversity, are potential key sites for conservation of Arctic biodiversity. However, there is a need for improved understanding of their long-term resilience. The Arctic hotspot of Ringhorndalen has the highest registered diversity of vascular plants in the Sv...
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Online Access: | https://hdl.handle.net/10037/18119 https://doi.org/10.1016/j.quascirev.2020.106207 |
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ftunivtroemsoe:oai:munin.uit.no:10037/18119 2023-05-15T14:27:27+02:00 A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard Voldstad, Linn H. Alsos, Inger Greve Farnsworth, Wesley Randall Heintzman, Peter D. Håkansson, Lena Kjellman, Sofia Elisabeth Rouillard, Alexandra Schomacker, Anders Eidesen, Pernille Bronken 2020-03-09 https://hdl.handle.net/10037/18119 https://doi.org/10.1016/j.quascirev.2020.106207 eng eng Elsevier Quaternary Science Reviews info:eu-repo/grantAgreement/RCN/FRIMEDBIO/250963/Norway/ECOGEN - Ecosystem change and species persistence over time: a genome-based approach/ECOGEN/ Voldstad, Alsos IGA, Farnsworth W, Heintzman PD, Håkansson L, Kjellman SE, Rouillard A, Schomacker A, Eidesen PB. A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard. Quaternary Science Reviews. 2020;234 FRIDAID 1803614 doi:10.1016/j.quascirev.2020.106207 0277-3791 1873-457X https://hdl.handle.net/10037/18119 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.quascirev.2020.106207 2021-06-25T17:57:20Z Arctic hotspots, local areas of high biodiversity, are potential key sites for conservation of Arctic biodiversity. However, there is a need for improved understanding of their long-term resilience. The Arctic hotspot of Ringhorndalen has the highest registered diversity of vascular plants in the Svalbard archipelago, including several remarkable and isolated plant populations located far north of their normal distribution range. Here we analyze a lake sediment core from Ringhorndalen for sedimentary ancient DNA ( seda DNA) and geochemical proxies to detect changes in local vegetation and climate. Half of the plant taxa appeared already before 10,600 cal. yr BP, indicating rapid colonization as the ice retreated. Thermophilous species had a reoccurring presence throughout the Holocene record, but stronger signal in the early than Late Holocene period. Thus, thermophilous Arctic plant species had broader distribution ranges during the Early Holocene thermal maximum c . 10,000 cal. yr BP than today. Most of these thermophilous species are currently not recorded in the catchment area of the studied lake, but occur locally in favourable areas further into the valley. For example, Empetrum nigrum was found in >40% of the seda DNA samples, whereas its current distribution in Ringhorndalen is highly restricted and outside the catchment area of the lake. Our findings support the hypothesis of isolated relict populations in Ringhorndalen. The findings are also consistent with main Holocene climatic shifts in Svalbard identified by previous studies and indicate an early warm and species-rich postglacial period until c . 6500 cal. yr BP, followed by fluctuating cool and warm periods throughout the later Holocene. Article in Journal/Newspaper Arctic Arctic biodiversity Arctic Empetrum nigrum Svalbard University of Tromsø: Munin Open Research Archive Arctic Svalbard Svalbard Archipelago Quaternary Science Reviews 234 106207 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Voldstad, Linn H. Alsos, Inger Greve Farnsworth, Wesley Randall Heintzman, Peter D. Håkansson, Lena Kjellman, Sofia Elisabeth Rouillard, Alexandra Schomacker, Anders Eidesen, Pernille Bronken A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
Arctic hotspots, local areas of high biodiversity, are potential key sites for conservation of Arctic biodiversity. However, there is a need for improved understanding of their long-term resilience. The Arctic hotspot of Ringhorndalen has the highest registered diversity of vascular plants in the Svalbard archipelago, including several remarkable and isolated plant populations located far north of their normal distribution range. Here we analyze a lake sediment core from Ringhorndalen for sedimentary ancient DNA ( seda DNA) and geochemical proxies to detect changes in local vegetation and climate. Half of the plant taxa appeared already before 10,600 cal. yr BP, indicating rapid colonization as the ice retreated. Thermophilous species had a reoccurring presence throughout the Holocene record, but stronger signal in the early than Late Holocene period. Thus, thermophilous Arctic plant species had broader distribution ranges during the Early Holocene thermal maximum c . 10,000 cal. yr BP than today. Most of these thermophilous species are currently not recorded in the catchment area of the studied lake, but occur locally in favourable areas further into the valley. For example, Empetrum nigrum was found in >40% of the seda DNA samples, whereas its current distribution in Ringhorndalen is highly restricted and outside the catchment area of the lake. Our findings support the hypothesis of isolated relict populations in Ringhorndalen. The findings are also consistent with main Holocene climatic shifts in Svalbard identified by previous studies and indicate an early warm and species-rich postglacial period until c . 6500 cal. yr BP, followed by fluctuating cool and warm periods throughout the later Holocene. |
format |
Article in Journal/Newspaper |
author |
Voldstad, Linn H. Alsos, Inger Greve Farnsworth, Wesley Randall Heintzman, Peter D. Håkansson, Lena Kjellman, Sofia Elisabeth Rouillard, Alexandra Schomacker, Anders Eidesen, Pernille Bronken |
author_facet |
Voldstad, Linn H. Alsos, Inger Greve Farnsworth, Wesley Randall Heintzman, Peter D. Håkansson, Lena Kjellman, Sofia Elisabeth Rouillard, Alexandra Schomacker, Anders Eidesen, Pernille Bronken |
author_sort |
Voldstad, Linn H. |
title |
A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard |
title_short |
A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard |
title_full |
A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard |
title_fullStr |
A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard |
title_full_unstemmed |
A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard |
title_sort |
complete holocene lake sediment ancient dna record reveals long-standing high arctic plant diversity hotspot in northern svalbard |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/18119 https://doi.org/10.1016/j.quascirev.2020.106207 |
geographic |
Arctic Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Svalbard Svalbard Archipelago |
genre |
Arctic Arctic biodiversity Arctic Empetrum nigrum Svalbard |
genre_facet |
Arctic Arctic biodiversity Arctic Empetrum nigrum Svalbard |
op_relation |
Quaternary Science Reviews info:eu-repo/grantAgreement/RCN/FRIMEDBIO/250963/Norway/ECOGEN - Ecosystem change and species persistence over time: a genome-based approach/ECOGEN/ Voldstad, Alsos IGA, Farnsworth W, Heintzman PD, Håkansson L, Kjellman SE, Rouillard A, Schomacker A, Eidesen PB. A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard. Quaternary Science Reviews. 2020;234 FRIDAID 1803614 doi:10.1016/j.quascirev.2020.106207 0277-3791 1873-457X https://hdl.handle.net/10037/18119 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106207 |
container_title |
Quaternary Science Reviews |
container_volume |
234 |
container_start_page |
106207 |
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1766301197271040000 |