Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica
The coasts of the West Antarctic Peninsula are strongly influenced by glacier meltwater discharge. The spatial structure and biogeochemical composition of inshore habitats are shaped by large quantities of terrigenous particulate material deposited in the vicinity of the coast, which impacts the pel...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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crroyalsociety:10.1098/rsta.2017.0178 2024-09-15T17:47:07+00:00 Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica Jerosch, Kerstin Pehlke, Hendrik Monien, Patrick Scharf, Frauke Weber, Lukas Kuhn, Gerhard Braun, Matthias H. Abele, Doris German Research Foundation SSP 1158 Priority Program Antarctic Research, DFG Marie Curie Action IRSES AWI, DFG SSP 1158 Marie Curie Action FP 7 IRSES ICBM, DFG SSP 1158 2018 http://dx.doi.org/10.1098/rsta.2017.0178 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2017.0178 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2017.0178 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 376, issue 2122, page 20170178 ISSN 1364-503X 1471-2962 journal-article 2018 crroyalsociety https://doi.org/10.1098/rsta.2017.0178 2024-07-08T04:26:39Z The coasts of the West Antarctic Peninsula are strongly influenced by glacier meltwater discharge. The spatial structure and biogeochemical composition of inshore habitats are shaped by large quantities of terrigenous particulate material deposited in the vicinity of the coast, which impacts the pelagic and benthic ecosystems. We used a multitude of geochemical and environmental variables to identify the radius extension of the meltwater impact from the Fourcade Glacier into the fjord system of Potter Cove, King George Island. The k -means cluster algorithm, canonical correspondence analysis, variance analysis and Tukey's post hoc multiple comparison tests were applied to define and cluster coastal meltwater habitats. A minimum of 10 clusters were needed to classify the 8 km 2 study area into meltwater fjord habitats (MFHs), fjord habitats and marine habitats. Strontium content in surface sediments is the main geochemical indicator for lithogenic creek discharge in Potter Cove. Furthermore, bathymetry, glacier distance and geomorphic positioning are the essential habitats explaining variables. The mean and maximum MFH extent amounted to 1 km and 2 km, respectively. Extrapolation of the identified meltwater impact ranges to King George Island coastlines, which are presently ice-covered bays and fjord areas, indicated an overall coverage of 200–400 km 2 MFH, underpinning the importance of better understanding the biology and biogeochemistry in terrestrial marine transition zones. This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica King George Island The Royal Society Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376 2122 20170178 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
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English |
description |
The coasts of the West Antarctic Peninsula are strongly influenced by glacier meltwater discharge. The spatial structure and biogeochemical composition of inshore habitats are shaped by large quantities of terrigenous particulate material deposited in the vicinity of the coast, which impacts the pelagic and benthic ecosystems. We used a multitude of geochemical and environmental variables to identify the radius extension of the meltwater impact from the Fourcade Glacier into the fjord system of Potter Cove, King George Island. The k -means cluster algorithm, canonical correspondence analysis, variance analysis and Tukey's post hoc multiple comparison tests were applied to define and cluster coastal meltwater habitats. A minimum of 10 clusters were needed to classify the 8 km 2 study area into meltwater fjord habitats (MFHs), fjord habitats and marine habitats. Strontium content in surface sediments is the main geochemical indicator for lithogenic creek discharge in Potter Cove. Furthermore, bathymetry, glacier distance and geomorphic positioning are the essential habitats explaining variables. The mean and maximum MFH extent amounted to 1 km and 2 km, respectively. Extrapolation of the identified meltwater impact ranges to King George Island coastlines, which are presently ice-covered bays and fjord areas, indicated an overall coverage of 200–400 km 2 MFH, underpinning the importance of better understanding the biology and biogeochemistry in terrestrial marine transition zones. This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’. |
author2 |
German Research Foundation SSP 1158 Priority Program Antarctic Research, DFG Marie Curie Action IRSES AWI, DFG SSP 1158 Marie Curie Action FP 7 IRSES ICBM, DFG SSP 1158 |
format |
Article in Journal/Newspaper |
author |
Jerosch, Kerstin Pehlke, Hendrik Monien, Patrick Scharf, Frauke Weber, Lukas Kuhn, Gerhard Braun, Matthias H. Abele, Doris |
spellingShingle |
Jerosch, Kerstin Pehlke, Hendrik Monien, Patrick Scharf, Frauke Weber, Lukas Kuhn, Gerhard Braun, Matthias H. Abele, Doris Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica |
author_facet |
Jerosch, Kerstin Pehlke, Hendrik Monien, Patrick Scharf, Frauke Weber, Lukas Kuhn, Gerhard Braun, Matthias H. Abele, Doris |
author_sort |
Jerosch, Kerstin |
title |
Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica |
title_short |
Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica |
title_full |
Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica |
title_fullStr |
Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica |
title_full_unstemmed |
Benthic meltwater fjord habitats formed by rapid glacier recession on King George Island, Antarctica |
title_sort |
benthic meltwater fjord habitats formed by rapid glacier recession on king george island, antarctica |
publisher |
The Royal Society |
publishDate |
2018 |
url |
http://dx.doi.org/10.1098/rsta.2017.0178 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2017.0178 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2017.0178 |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 376, issue 2122, page 20170178 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2017.0178 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
376 |
container_issue |
2122 |
container_start_page |
20170178 |
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1810495747373662208 |