Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot"
Andøya on the NW coast of Norway is a key site for understanding the Last Glacial Maximum (LGM) in northern Europe. Controversy has arisen concerning the local conditions, especially about the timing and extent of local glacial cover, maximum July temperatures and whether pine and/or spruce could ha...
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ftzenodo:oai:zenodo.org:3962362 2023-05-15T13:16:24+02:00 Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" Alsos, Inger Sjögren, Per Brown, Antony Gielly, Ludovic Merkel, Marie Paus, Aage Lammers, Youri Edwards, Mary Alm, Torbjørn Leng, Melanie Goslar, Tomasz Langdon, Catherine Bakke, Jostein van der Bilt, Willem 2020-07-06 https://zenodo.org/record/3962362 https://doi.org/10.5061/dryad.zw3r2285q unknown doi:10.1016/j.quascirev.2020.106364 https://zenodo.org/communities/dryad https://zenodo.org/record/3962362 https://doi.org/10.5061/dryad.zw3r2285q oai:zenodo.org:3962362 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode info:eu-repo/semantics/other dataset 2020 ftzenodo https://doi.org/10.5061/dryad.zw3r2285q10.1016/j.quascirev.2020.106364 2023-03-10T16:31:53Z Andøya on the NW coast of Norway is a key site for understanding the Last Glacial Maximum (LGM) in northern Europe. Controversy has arisen concerning the local conditions, especially about the timing and extent of local glacial cover, maximum July temperatures and whether pine and/or spruce could have grown there. We reviewed all existing data and add newly analysed ancient sedimentary DNA, pollen, macrofossils, geochemistry and stable isotopes from three lake sediment cores from Øvre Æråsvatnet. A total of 23 new dates and age-depth modelling suggests the lake has been ice-free since GI2 (<22.8 k cal. BP) and possibly GS3 (<27.4 k cal. BP). Pinus and Picea sedimentary ancient DNA (sedaDNA) was found in all three cores but at such low frequencies that it could not be distinguished from background contamination. LGM samples have an exceptionally high organic matter content, with isotopic values indicating that carbon and nitrogen derives from a marine source. Along with finds of bones of the little auk (Alle alle), this indicates that the lake received guano from an adjacent bird colony. DNA, pollen and macrofossil assemblages were dominated by Poaceae, Brassicaceae and Papaver, but scattered occurrence of species currently restricted to the Low Arctic Tundra Zone (July temperature of 8-9°C) such as Apiaceae (DNA, 8-9°C), and Alchemilla alpina (macrofossil, 8-9°C) were also recorded. The review showed 94 recorded vascular plant taxa, of which 38% have a northern limit in Shrub Tundra or more southern vegetation zones. This unusual assemblage likely stems from a combination of proximity to ice-free water in summer, geographical isolation linked with stochastic long- distance dispersal events, and the presence of bird-fertilized habitats. The environmental reconstruction based on all records from the area does not preclude local growth of tree species, as the local climate combined with high nutrient input may have led to periodically suitable environmental 'hotspot' conditions. This dataset includes two ... Dataset Alle alle Andøya Arctic little auk Northern Norway Tundra Zenodo Arctic Norway Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Andøya ENVELOPE(13.982,13.982,68.185,68.185) Øvre ENVELOPE(14.991,14.991,67.750,67.750) øvre Æråsvatnet ENVELOPE(16.035,16.035,69.256,69.256) |
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ftzenodo |
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unknown |
description |
Andøya on the NW coast of Norway is a key site for understanding the Last Glacial Maximum (LGM) in northern Europe. Controversy has arisen concerning the local conditions, especially about the timing and extent of local glacial cover, maximum July temperatures and whether pine and/or spruce could have grown there. We reviewed all existing data and add newly analysed ancient sedimentary DNA, pollen, macrofossils, geochemistry and stable isotopes from three lake sediment cores from Øvre Æråsvatnet. A total of 23 new dates and age-depth modelling suggests the lake has been ice-free since GI2 (<22.8 k cal. BP) and possibly GS3 (<27.4 k cal. BP). Pinus and Picea sedimentary ancient DNA (sedaDNA) was found in all three cores but at such low frequencies that it could not be distinguished from background contamination. LGM samples have an exceptionally high organic matter content, with isotopic values indicating that carbon and nitrogen derives from a marine source. Along with finds of bones of the little auk (Alle alle), this indicates that the lake received guano from an adjacent bird colony. DNA, pollen and macrofossil assemblages were dominated by Poaceae, Brassicaceae and Papaver, but scattered occurrence of species currently restricted to the Low Arctic Tundra Zone (July temperature of 8-9°C) such as Apiaceae (DNA, 8-9°C), and Alchemilla alpina (macrofossil, 8-9°C) were also recorded. The review showed 94 recorded vascular plant taxa, of which 38% have a northern limit in Shrub Tundra or more southern vegetation zones. This unusual assemblage likely stems from a combination of proximity to ice-free water in summer, geographical isolation linked with stochastic long- distance dispersal events, and the presence of bird-fertilized habitats. The environmental reconstruction based on all records from the area does not preclude local growth of tree species, as the local climate combined with high nutrient input may have led to periodically suitable environmental 'hotspot' conditions. This dataset includes two ... |
format |
Dataset |
author |
Alsos, Inger Sjögren, Per Brown, Antony Gielly, Ludovic Merkel, Marie Paus, Aage Lammers, Youri Edwards, Mary Alm, Torbjørn Leng, Melanie Goslar, Tomasz Langdon, Catherine Bakke, Jostein van der Bilt, Willem |
spellingShingle |
Alsos, Inger Sjögren, Per Brown, Antony Gielly, Ludovic Merkel, Marie Paus, Aage Lammers, Youri Edwards, Mary Alm, Torbjørn Leng, Melanie Goslar, Tomasz Langdon, Catherine Bakke, Jostein van der Bilt, Willem Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" |
author_facet |
Alsos, Inger Sjögren, Per Brown, Antony Gielly, Ludovic Merkel, Marie Paus, Aage Lammers, Youri Edwards, Mary Alm, Torbjørn Leng, Melanie Goslar, Tomasz Langdon, Catherine Bakke, Jostein van der Bilt, Willem |
author_sort |
Alsos, Inger |
title |
Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" |
title_short |
Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" |
title_full |
Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" |
title_fullStr |
Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" |
title_full_unstemmed |
Data from: Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological "hotspot" |
title_sort |
data from: last glacial maximum environmental conditions at andøya, northern norway; evidence for a northern ice-edge ecological "hotspot" |
publishDate |
2020 |
url |
https://zenodo.org/record/3962362 https://doi.org/10.5061/dryad.zw3r2285q |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(13.982,13.982,68.185,68.185) ENVELOPE(14.991,14.991,67.750,67.750) ENVELOPE(16.035,16.035,69.256,69.256) |
geographic |
Arctic Norway Guano Andøya Øvre øvre Æråsvatnet |
geographic_facet |
Arctic Norway Guano Andøya Øvre øvre Æråsvatnet |
genre |
Alle alle Andøya Arctic little auk Northern Norway Tundra |
genre_facet |
Alle alle Andøya Arctic little auk Northern Norway Tundra |
op_relation |
doi:10.1016/j.quascirev.2020.106364 https://zenodo.org/communities/dryad https://zenodo.org/record/3962362 https://doi.org/10.5061/dryad.zw3r2285q oai:zenodo.org:3962362 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.zw3r2285q10.1016/j.quascirev.2020.106364 |
_version_ |
1766273814050635776 |