Recent climate warming drives ecological change in a remote high-Arctic lake
The high Arctic is the fastest warming region on Earth, evidenced by extreme near-surface temperature increase in non-summer seasons, recent rapid sea ice decline and permafrost melting since the early 1990’s. Understanding the impact of climate change on the sensitive Arctic ecosystem to climate ch...
Main Authors: | , , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
CU Scholar
2018
|
Subjects: | |
Online Access: | https://scholar.colorado.edu/libr_oafund/90 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1091&context=libr_oafund |
id |
ftunicolboulder:oai:scholar.colorado.edu:libr_oafund-1091 |
---|---|
record_format |
openpolar |
spelling |
ftunicolboulder:oai:scholar.colorado.edu:libr_oafund-1091 2023-05-15T14:36:26+02:00 Recent climate warming drives ecological change in a remote high-Arctic lake Woelders, Lineke Lenaerts, Jan Hagemans, Kimberley Akkerman, Keechy van Hoof, Thomas B. Hoek, Wim Z. 2018-05-01T07:00:00Z application/pdf https://scholar.colorado.edu/libr_oafund/90 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1091&context=libr_oafund unknown CU Scholar https://scholar.colorado.edu/libr_oafund/90 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1091&context=libr_oafund University Libraries Open Access Fund Supported Publications Biogeochemistry Climate Fresh Water Studies Geochemistry Meteorology Terrestrial and Aquatic Ecology text 2018 ftunicolboulder 2019-05-03T23:29:23Z The high Arctic is the fastest warming region on Earth, evidenced by extreme near-surface temperature increase in non-summer seasons, recent rapid sea ice decline and permafrost melting since the early 1990’s. Understanding the impact of climate change on the sensitive Arctic ecosystem to climate change has so far been hampered by the lack of time-constrained, high-resolution records and by implicit climate data analyses. Here, we show evidence of sharp growth in freshwater green algae as well as distinct diatom assemblage changes since ~1995, retrieved from a high-Arctic (80 °N) lake sediment record on Barentsøya (Svalbard). The proxy record approaches an annual to biennial resolution. Combining remotesensing and in-situ climate data, we show that this ecological change is concurrent with, and is likely driven by, the atmospheric warming and a sharp decrease in the length of the sea ice covered period in the region, and throughout the Arctic. Moreover, this research demonstrates the value of palaeoclimate records in pristine environments for supporting and extending instrumental records. Our results reinforce and extend observations from other sites that the high Arctic has already undergone rapid ecological changes in response to on-going climate change, and will continue to do so in the future. Text Arctic Barentsøya Climate change Ice permafrost Sea ice Svalbard University of Colorado, Boulder: CU Scholar Arctic Svalbard Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Barentsøya ENVELOPE(21.250,21.250,78.450,78.450) |
institution |
Open Polar |
collection |
University of Colorado, Boulder: CU Scholar |
op_collection_id |
ftunicolboulder |
language |
unknown |
topic |
Biogeochemistry Climate Fresh Water Studies Geochemistry Meteorology Terrestrial and Aquatic Ecology |
spellingShingle |
Biogeochemistry Climate Fresh Water Studies Geochemistry Meteorology Terrestrial and Aquatic Ecology Woelders, Lineke Lenaerts, Jan Hagemans, Kimberley Akkerman, Keechy van Hoof, Thomas B. Hoek, Wim Z. Recent climate warming drives ecological change in a remote high-Arctic lake |
topic_facet |
Biogeochemistry Climate Fresh Water Studies Geochemistry Meteorology Terrestrial and Aquatic Ecology |
description |
The high Arctic is the fastest warming region on Earth, evidenced by extreme near-surface temperature increase in non-summer seasons, recent rapid sea ice decline and permafrost melting since the early 1990’s. Understanding the impact of climate change on the sensitive Arctic ecosystem to climate change has so far been hampered by the lack of time-constrained, high-resolution records and by implicit climate data analyses. Here, we show evidence of sharp growth in freshwater green algae as well as distinct diatom assemblage changes since ~1995, retrieved from a high-Arctic (80 °N) lake sediment record on Barentsøya (Svalbard). The proxy record approaches an annual to biennial resolution. Combining remotesensing and in-situ climate data, we show that this ecological change is concurrent with, and is likely driven by, the atmospheric warming and a sharp decrease in the length of the sea ice covered period in the region, and throughout the Arctic. Moreover, this research demonstrates the value of palaeoclimate records in pristine environments for supporting and extending instrumental records. Our results reinforce and extend observations from other sites that the high Arctic has already undergone rapid ecological changes in response to on-going climate change, and will continue to do so in the future. |
format |
Text |
author |
Woelders, Lineke Lenaerts, Jan Hagemans, Kimberley Akkerman, Keechy van Hoof, Thomas B. Hoek, Wim Z. |
author_facet |
Woelders, Lineke Lenaerts, Jan Hagemans, Kimberley Akkerman, Keechy van Hoof, Thomas B. Hoek, Wim Z. |
author_sort |
Woelders, Lineke |
title |
Recent climate warming drives ecological change in a remote high-Arctic lake |
title_short |
Recent climate warming drives ecological change in a remote high-Arctic lake |
title_full |
Recent climate warming drives ecological change in a remote high-Arctic lake |
title_fullStr |
Recent climate warming drives ecological change in a remote high-Arctic lake |
title_full_unstemmed |
Recent climate warming drives ecological change in a remote high-Arctic lake |
title_sort |
recent climate warming drives ecological change in a remote high-arctic lake |
publisher |
CU Scholar |
publishDate |
2018 |
url |
https://scholar.colorado.edu/libr_oafund/90 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1091&context=libr_oafund |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(21.250,21.250,78.450,78.450) |
geographic |
Arctic Svalbard Arctic Lake Barentsøya |
geographic_facet |
Arctic Svalbard Arctic Lake Barentsøya |
genre |
Arctic Barentsøya Climate change Ice permafrost Sea ice Svalbard |
genre_facet |
Arctic Barentsøya Climate change Ice permafrost Sea ice Svalbard |
op_source |
University Libraries Open Access Fund Supported Publications |
op_relation |
https://scholar.colorado.edu/libr_oafund/90 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1091&context=libr_oafund |
_version_ |
1766309057423998976 |