Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries.
Arctic fjords feature among some of the most climate-sensitive regions on the planet. The site of this study-Kongsfjorden-is one such fjord in which sedimentation and sediment geochemistry reflect climate-mediated changes in glacial melt and marine primary productivity. Here, we have shown that the...
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ftdoajarticles:oai:doaj.org/article:a8312ad21add4a5f9bf22a14e3b28287 2023-05-15T14:50:49+02:00 Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. Vikash Kumar Manish Tiwari R Rengarajan 2018-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0201456 https://doaj.org/article/a8312ad21add4a5f9bf22a14e3b28287 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC6093672?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0201456 https://doaj.org/article/a8312ad21add4a5f9bf22a14e3b28287 PLoS ONE, Vol 13, Iss 8, p e0201456 (2018) Medicine R Science Q article 2018 ftdoajarticles https://doi.org/10.1371/journal.pone.0201456 2022-12-31T16:09:29Z Arctic fjords feature among some of the most climate-sensitive regions on the planet. The site of this study-Kongsfjorden-is one such fjord in which sedimentation and sediment geochemistry reflect climate-mediated changes in glacial melt and marine primary productivity. Here, we have shown that the fjord is particularly sensitive to the changing melt dynamics of the surrounding glaciers which are a direct consequence of warming/cooling in the region and is reflected in the productivity at the fjord. Warming increases meltwater influx into the fjord leading to enhanced turbidity which results in lower productivity. A multi-proxy study (sedimentary organic matter content, carbon and nitrogen isotope ratios, and microfossil abundance) using a 21 cm long sediment core from the Kongsfjorden helped us reconstruct warming driven melt-dynamics history for the past two centuries. Proxy data show a general decreasing trend in productivity along with a few excursions over the last two centuries. Warming driven glacial-melt dynamics appears to be the dominant control on productivity throughout the span of the core. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden Directory of Open Access Journals: DOAJ Articles Arctic PLOS ONE 13 8 e0201456 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Vikash Kumar Manish Tiwari R Rengarajan Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. |
topic_facet |
Medicine R Science Q |
description |
Arctic fjords feature among some of the most climate-sensitive regions on the planet. The site of this study-Kongsfjorden-is one such fjord in which sedimentation and sediment geochemistry reflect climate-mediated changes in glacial melt and marine primary productivity. Here, we have shown that the fjord is particularly sensitive to the changing melt dynamics of the surrounding glaciers which are a direct consequence of warming/cooling in the region and is reflected in the productivity at the fjord. Warming increases meltwater influx into the fjord leading to enhanced turbidity which results in lower productivity. A multi-proxy study (sedimentary organic matter content, carbon and nitrogen isotope ratios, and microfossil abundance) using a 21 cm long sediment core from the Kongsfjorden helped us reconstruct warming driven melt-dynamics history for the past two centuries. Proxy data show a general decreasing trend in productivity along with a few excursions over the last two centuries. Warming driven glacial-melt dynamics appears to be the dominant control on productivity throughout the span of the core. |
format |
Article in Journal/Newspaper |
author |
Vikash Kumar Manish Tiwari R Rengarajan |
author_facet |
Vikash Kumar Manish Tiwari R Rengarajan |
author_sort |
Vikash Kumar |
title |
Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. |
title_short |
Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. |
title_full |
Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. |
title_fullStr |
Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. |
title_full_unstemmed |
Warming in the Arctic Captured by productivity variability at an Arctic Fjord over the past two centuries. |
title_sort |
warming in the arctic captured by productivity variability at an arctic fjord over the past two centuries. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2018 |
url |
https://doi.org/10.1371/journal.pone.0201456 https://doaj.org/article/a8312ad21add4a5f9bf22a14e3b28287 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Kongsfjord* Kongsfjorden |
genre_facet |
Arctic Kongsfjord* Kongsfjorden |
op_source |
PLoS ONE, Vol 13, Iss 8, p e0201456 (2018) |
op_relation |
http://europepmc.org/articles/PMC6093672?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0201456 https://doaj.org/article/a8312ad21add4a5f9bf22a14e3b28287 |
op_doi |
https://doi.org/10.1371/journal.pone.0201456 |
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PLOS ONE |
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13 |
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8 |
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e0201456 |
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1766321862075219968 |