Location Location Location: Survival of Antarctic biota requires the best real-estate ...
The origin of terrestrial biota in Antarctica has been debated since the discovery of springtails on the first historic voyages to the southern continent more than 120 years ago. A plausible explanation for the long-term persistence of life requiring ice-free land on continental Antarctica has, howe...
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Online Access: | https://dx.doi.org/10.5281/zenodo.7425717 https://zenodo.org/record/7425717 |
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ftdatacite:10.5281/zenodo.7425717 2023-11-05T03:36:15+01:00 Location Location Location: Survival of Antarctic biota requires the best real-estate ... Stevens, Mark Mackintosh, Andrew 2023 https://dx.doi.org/10.5281/zenodo.7425717 https://zenodo.org/record/7425717 unknown Zenodo https://zenodo.org/communities/dryad https://dx.doi.org/10.5061/dryad.zw3r228bx https://dx.doi.org/10.5281/zenodo.7425718 https://zenodo.org/communities/dryad Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess springtails ice-free glacial refuge cosmogenic dating Nunatak ice sheet article CreativeWork Other 2023 ftdatacite https://doi.org/10.5281/zenodo.742571710.5061/dryad.zw3r228bx10.5281/zenodo.7425718 2023-10-09T10:52:10Z The origin of terrestrial biota in Antarctica has been debated since the discovery of springtails on the first historic voyages to the southern continent more than 120 years ago. A plausible explanation for the long-term persistence of life requiring ice-free land on continental Antarctica has, however, remained elusive. The default glacial eradication scenario has dominated because hypotheses to date have failed to provide a mechanism for their widespread survival on the continent, particularly through the Last Glacial Maximum when geological evidence demonstrates that the ice sheet was more extensive than present. Here, we provide support for the alternative nunatak refuge hypothesis – that ice-free terrain with sufficient relief above the ice sheet provided refuges and was a source for terrestrial biota found today. This hypothesis is supported here by an increased understanding from the combination of biological and geological evidence, and we outline a mechanism for these refuges during successive ... : Full details are in the download file " README_Dataset-SurvivalAntarcticBiota.md" Software and file formats used. All maps were created using the Antarctic GIS package 'Quantarctica' (https://www.qgis.org/en/site/about/case_studies/antarctica.html) in QGIS ver. 3.22.7. The ACBRs shown in figure 1 and Supplementary figures S1-S7 are included in an 'Environmental management' layer within Quantarctica and colours were chosen to match those used previously. For the land topography of Antarctica we used the shapefiles from 'Bedmachine' (downloaded from NSIDC, https://nsidc.org/data/nsidc-0756/versions/2) in QGIS ver. 3.22.7. Each input data file was saved as .csv files and imported individually into QGIS for: (1) all individual springtail occurrences (separated into each species), (2) geothermal sites (separated into large and small), (3) geochronological dated sites (separated into high refuge support, and low refuge support), and (4) eDNA signals of springtails. These data were then used to create figures 1 and ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Springtail DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
springtails ice-free glacial refuge cosmogenic dating Nunatak ice sheet |
spellingShingle |
springtails ice-free glacial refuge cosmogenic dating Nunatak ice sheet Stevens, Mark Mackintosh, Andrew Location Location Location: Survival of Antarctic biota requires the best real-estate ... |
topic_facet |
springtails ice-free glacial refuge cosmogenic dating Nunatak ice sheet |
description |
The origin of terrestrial biota in Antarctica has been debated since the discovery of springtails on the first historic voyages to the southern continent more than 120 years ago. A plausible explanation for the long-term persistence of life requiring ice-free land on continental Antarctica has, however, remained elusive. The default glacial eradication scenario has dominated because hypotheses to date have failed to provide a mechanism for their widespread survival on the continent, particularly through the Last Glacial Maximum when geological evidence demonstrates that the ice sheet was more extensive than present. Here, we provide support for the alternative nunatak refuge hypothesis – that ice-free terrain with sufficient relief above the ice sheet provided refuges and was a source for terrestrial biota found today. This hypothesis is supported here by an increased understanding from the combination of biological and geological evidence, and we outline a mechanism for these refuges during successive ... : Full details are in the download file " README_Dataset-SurvivalAntarcticBiota.md" Software and file formats used. All maps were created using the Antarctic GIS package 'Quantarctica' (https://www.qgis.org/en/site/about/case_studies/antarctica.html) in QGIS ver. 3.22.7. The ACBRs shown in figure 1 and Supplementary figures S1-S7 are included in an 'Environmental management' layer within Quantarctica and colours were chosen to match those used previously. For the land topography of Antarctica we used the shapefiles from 'Bedmachine' (downloaded from NSIDC, https://nsidc.org/data/nsidc-0756/versions/2) in QGIS ver. 3.22.7. Each input data file was saved as .csv files and imported individually into QGIS for: (1) all individual springtail occurrences (separated into each species), (2) geothermal sites (separated into large and small), (3) geochronological dated sites (separated into high refuge support, and low refuge support), and (4) eDNA signals of springtails. These data were then used to create figures 1 and ... |
format |
Article in Journal/Newspaper |
author |
Stevens, Mark Mackintosh, Andrew |
author_facet |
Stevens, Mark Mackintosh, Andrew |
author_sort |
Stevens, Mark |
title |
Location Location Location: Survival of Antarctic biota requires the best real-estate ... |
title_short |
Location Location Location: Survival of Antarctic biota requires the best real-estate ... |
title_full |
Location Location Location: Survival of Antarctic biota requires the best real-estate ... |
title_fullStr |
Location Location Location: Survival of Antarctic biota requires the best real-estate ... |
title_full_unstemmed |
Location Location Location: Survival of Antarctic biota requires the best real-estate ... |
title_sort |
location location location: survival of antarctic biota requires the best real-estate ... |
publisher |
Zenodo |
publishDate |
2023 |
url |
https://dx.doi.org/10.5281/zenodo.7425717 https://zenodo.org/record/7425717 |
genre |
Antarc* Antarctic Antarctica Ice Sheet Springtail |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Springtail |
op_relation |
https://zenodo.org/communities/dryad https://dx.doi.org/10.5061/dryad.zw3r228bx https://dx.doi.org/10.5281/zenodo.7425718 https://zenodo.org/communities/dryad |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.742571710.5061/dryad.zw3r228bx10.5281/zenodo.7425718 |
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1781691001641893888 |