Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG
Given the current rate of Arctic warming, the associated ecological changes need to be put into a longer-term context of natural variability. Palaeolimnology offers tools to explore archives stored in the sediments of Arctic lakes and ponds. The interpretation of these archives requires a sound know...
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ftfrontimediafig:oai:figshare.com:article/22792253 2024-09-09T19:20:01+00:00 Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG Kaarina Weckström Jan Weckström Juliane Wischnewski Thomas A. Davidson Torben L. Lauridsen Frank Landkildehus Kirsten S. Christoffersen Erik Jeppesen 2023-05-10T04:37:30Z https://doi.org/10.3389/fevo.2023.1177638.s002 https://figshare.com/articles/figure/Image_2_Unlocking_environmental_archives_in_the_Arctic_insights_from_modern_diatom-environment_relationships_in_lakes_and_ponds_across_Greenland_JPEG/22792253 unknown doi:10.3389/fevo.2023.1177638.s002 https://figshare.com/articles/figure/Image_2_Unlocking_environmental_archives_in_the_Arctic_insights_from_modern_diatom-environment_relationships_in_lakes_and_ponds_across_Greenland_JPEG/22792253 CC BY 4.0 Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology palaeolimnology diatoms diversity dispersal lakes and ponds climate change Greenland Image Figure 2023 ftfrontimediafig https://doi.org/10.3389/fevo.2023.1177638.s002 2024-08-19T06:19:56Z Given the current rate of Arctic warming, the associated ecological changes need to be put into a longer-term context of natural variability. Palaeolimnology offers tools to explore archives stored in the sediments of Arctic lakes and ponds. The interpretation of these archives requires a sound knowledge of the ecology and distribution of the sedimentary proxy organisms used. Here we explored the relationship between diatoms, a widely used proxy group of siliceous algae, and the environmental drivers defining their assemblages and diversity in 115 lakes and ponds in Greenland, a markedly understudied arctic region covering extensive climate and environmental gradients. The main environmental drivers of diatom communities were related to climate and lake ontogeny, including both measured and unmeasured (spatially structured) environmental variables. The lakes and ponds in the northern study regions showed a distinctive dominance of small benthic fragilarioid species, while diatom communities in the South(west) of Greenland were more varied, including many epiphytes, owing to the longer growing season and higher habitat diversity of these lakes and ponds. The newly established lakes in the Ilulissat region host markedly different communities compared to all other sites. Species diversity followed an overall clear latitudinal decline towards the North. Despite the large distances between our study regions, diatom dispersal appeared not to be limited. Based on our results, diatoms are an excellent proxy for climate-mediated lake ecosystem change in the Arctic and thus a valuable tool for climate reconstructions in the region. Particular consideration should be given to often unmeasured climate-related drivers, such as in-lake habitat availability, due to their apparent importance in defining Arctic diatom communities. Still Image Arctic Climate change Greenland Ilulissat Frontiers: Figshare Arctic Greenland Ilulissat ENVELOPE(-51.099,-51.099,69.220,69.220) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology palaeolimnology diatoms diversity dispersal lakes and ponds climate change Greenland |
spellingShingle |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology palaeolimnology diatoms diversity dispersal lakes and ponds climate change Greenland Kaarina Weckström Jan Weckström Juliane Wischnewski Thomas A. Davidson Torben L. Lauridsen Frank Landkildehus Kirsten S. Christoffersen Erik Jeppesen Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG |
topic_facet |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology palaeolimnology diatoms diversity dispersal lakes and ponds climate change Greenland |
description |
Given the current rate of Arctic warming, the associated ecological changes need to be put into a longer-term context of natural variability. Palaeolimnology offers tools to explore archives stored in the sediments of Arctic lakes and ponds. The interpretation of these archives requires a sound knowledge of the ecology and distribution of the sedimentary proxy organisms used. Here we explored the relationship between diatoms, a widely used proxy group of siliceous algae, and the environmental drivers defining their assemblages and diversity in 115 lakes and ponds in Greenland, a markedly understudied arctic region covering extensive climate and environmental gradients. The main environmental drivers of diatom communities were related to climate and lake ontogeny, including both measured and unmeasured (spatially structured) environmental variables. The lakes and ponds in the northern study regions showed a distinctive dominance of small benthic fragilarioid species, while diatom communities in the South(west) of Greenland were more varied, including many epiphytes, owing to the longer growing season and higher habitat diversity of these lakes and ponds. The newly established lakes in the Ilulissat region host markedly different communities compared to all other sites. Species diversity followed an overall clear latitudinal decline towards the North. Despite the large distances between our study regions, diatom dispersal appeared not to be limited. Based on our results, diatoms are an excellent proxy for climate-mediated lake ecosystem change in the Arctic and thus a valuable tool for climate reconstructions in the region. Particular consideration should be given to often unmeasured climate-related drivers, such as in-lake habitat availability, due to their apparent importance in defining Arctic diatom communities. |
format |
Still Image |
author |
Kaarina Weckström Jan Weckström Juliane Wischnewski Thomas A. Davidson Torben L. Lauridsen Frank Landkildehus Kirsten S. Christoffersen Erik Jeppesen |
author_facet |
Kaarina Weckström Jan Weckström Juliane Wischnewski Thomas A. Davidson Torben L. Lauridsen Frank Landkildehus Kirsten S. Christoffersen Erik Jeppesen |
author_sort |
Kaarina Weckström |
title |
Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG |
title_short |
Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG |
title_full |
Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG |
title_fullStr |
Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG |
title_full_unstemmed |
Image_2_Unlocking environmental archives in the Arctic—insights from modern diatom-environment relationships in lakes and ponds across Greenland.JPEG |
title_sort |
image_2_unlocking environmental archives in the arctic—insights from modern diatom-environment relationships in lakes and ponds across greenland.jpeg |
publishDate |
2023 |
url |
https://doi.org/10.3389/fevo.2023.1177638.s002 https://figshare.com/articles/figure/Image_2_Unlocking_environmental_archives_in_the_Arctic_insights_from_modern_diatom-environment_relationships_in_lakes_and_ponds_across_Greenland_JPEG/22792253 |
long_lat |
ENVELOPE(-51.099,-51.099,69.220,69.220) |
geographic |
Arctic Greenland Ilulissat |
geographic_facet |
Arctic Greenland Ilulissat |
genre |
Arctic Climate change Greenland Ilulissat |
genre_facet |
Arctic Climate change Greenland Ilulissat |
op_relation |
doi:10.3389/fevo.2023.1177638.s002 https://figshare.com/articles/figure/Image_2_Unlocking_environmental_archives_in_the_Arctic_insights_from_modern_diatom-environment_relationships_in_lakes_and_ponds_across_Greenland_JPEG/22792253 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fevo.2023.1177638.s002 |
_version_ |
1809760120288051200 |