Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic?
Freshwater discharge from glaciers is increasing across the Arctic in response to anthropogenic climate change, which raises questions about the potential downstream effects in the marine environment. Whilst a combination of long-term monitoring programmes and intensive Arctic field campaigns have i...
Published in: | The Cryosphere |
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Main Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2020
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Online Access: | https://doi.org/10.5194/tc-14-1347-2020 https://www.the-cryosphere.net/14/1347/2020/tc-14-1347-2020.pdf https://doaj.org/article/858ce9160ecc47f48b3f3a765e47f819 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:858ce9160ecc47f48b3f3a765e47f819 2023-05-15T14:36:55+02:00 Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? M. J. Hopwood D. Carroll T. Dunse A. Hodson J. M. Holding J. L. Iriarte S. Ribeiro E. P. Achterberg C. Cantoni D. F. Carlson M. Chierici J. S. Clarke S. Cozzi A. Fransson T. Juul-Pedersen M. H. S. Winding L. Meire 2020-04-01 https://doi.org/10.5194/tc-14-1347-2020 https://www.the-cryosphere.net/14/1347/2020/tc-14-1347-2020.pdf https://doaj.org/article/858ce9160ecc47f48b3f3a765e47f819 en eng Copernicus Publications doi:10.5194/tc-14-1347-2020 1994-0416 1994-0424 https://www.the-cryosphere.net/14/1347/2020/tc-14-1347-2020.pdf https://doaj.org/article/858ce9160ecc47f48b3f3a765e47f819 undefined The Cryosphere, Vol 14, Pp 1347-1383 (2020) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/tc-14-1347-2020 2023-01-22T19:28:50Z Freshwater discharge from glaciers is increasing across the Arctic in response to anthropogenic climate change, which raises questions about the potential downstream effects in the marine environment. Whilst a combination of long-term monitoring programmes and intensive Arctic field campaigns have improved our knowledge of glacier–ocean interactions in recent years, especially with respect to fjord/ocean circulation, there are extensive knowledge gaps concerning how glaciers affect marine biogeochemistry and productivity. Following two cross-cutting disciplinary International Arctic Science Committee (IASC) workshops addressing the importance of glaciers for the marine ecosystem, here we review the state of the art concerning how freshwater discharge affects the marine environment with a specific focus on marine biogeochemistry and biological productivity. Using a series of Arctic case studies (Nuup Kangerlua/Godthåbsfjord, Kongsfjorden, Kangerluarsuup Sermia/Bowdoin Fjord, Young Sound and Sermilik Fjord), the interconnected effects of freshwater discharge on fjord–shelf exchange, nutrient availability, the carbonate system, the carbon cycle and the microbial food web are investigated. Key findings are that whether the effect of glacier discharge on marine primary production is positive or negative is highly dependent on a combination of factors. These include glacier type (marine- or land-terminating), fjord–glacier geometry and the limiting resource(s) for phytoplankton growth in a specific spatio-temporal region (light, macronutrients or micronutrients). Arctic glacier fjords therefore often exhibit distinct discharge–productivity relationships, and multiple case-studies must be considered in order to understand the net effects of glacier discharge on Arctic marine ecosystems. Article in Journal/Newspaper Arctic Climate change Godthåbsfjord IASC International Arctic Science Committee Kongsfjord* Kongsfjorden Phytoplankton Sermilik The Cryosphere Unknown Arctic Bowdoin ENVELOPE(-69.317,-69.317,77.683,77.683) Bowdoin Fjord ENVELOPE(-68.521,-68.521,77.598,77.598) The Cryosphere 14 4 1347 1383 |
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Open Polar |
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Unknown |
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fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo M. J. Hopwood D. Carroll T. Dunse A. Hodson J. M. Holding J. L. Iriarte S. Ribeiro E. P. Achterberg C. Cantoni D. F. Carlson M. Chierici J. S. Clarke S. Cozzi A. Fransson T. Juul-Pedersen M. H. S. Winding L. Meire Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? |
topic_facet |
envir geo |
description |
Freshwater discharge from glaciers is increasing across the Arctic in response to anthropogenic climate change, which raises questions about the potential downstream effects in the marine environment. Whilst a combination of long-term monitoring programmes and intensive Arctic field campaigns have improved our knowledge of glacier–ocean interactions in recent years, especially with respect to fjord/ocean circulation, there are extensive knowledge gaps concerning how glaciers affect marine biogeochemistry and productivity. Following two cross-cutting disciplinary International Arctic Science Committee (IASC) workshops addressing the importance of glaciers for the marine ecosystem, here we review the state of the art concerning how freshwater discharge affects the marine environment with a specific focus on marine biogeochemistry and biological productivity. Using a series of Arctic case studies (Nuup Kangerlua/Godthåbsfjord, Kongsfjorden, Kangerluarsuup Sermia/Bowdoin Fjord, Young Sound and Sermilik Fjord), the interconnected effects of freshwater discharge on fjord–shelf exchange, nutrient availability, the carbonate system, the carbon cycle and the microbial food web are investigated. Key findings are that whether the effect of glacier discharge on marine primary production is positive or negative is highly dependent on a combination of factors. These include glacier type (marine- or land-terminating), fjord–glacier geometry and the limiting resource(s) for phytoplankton growth in a specific spatio-temporal region (light, macronutrients or micronutrients). Arctic glacier fjords therefore often exhibit distinct discharge–productivity relationships, and multiple case-studies must be considered in order to understand the net effects of glacier discharge on Arctic marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
M. J. Hopwood D. Carroll T. Dunse A. Hodson J. M. Holding J. L. Iriarte S. Ribeiro E. P. Achterberg C. Cantoni D. F. Carlson M. Chierici J. S. Clarke S. Cozzi A. Fransson T. Juul-Pedersen M. H. S. Winding L. Meire |
author_facet |
M. J. Hopwood D. Carroll T. Dunse A. Hodson J. M. Holding J. L. Iriarte S. Ribeiro E. P. Achterberg C. Cantoni D. F. Carlson M. Chierici J. S. Clarke S. Cozzi A. Fransson T. Juul-Pedersen M. H. S. Winding L. Meire |
author_sort |
M. J. Hopwood |
title |
Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? |
title_short |
Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? |
title_full |
Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? |
title_fullStr |
Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? |
title_full_unstemmed |
Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic? |
title_sort |
review article: how does glacier discharge affect marine biogeochemistry and primary production in the arctic? |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-1347-2020 https://www.the-cryosphere.net/14/1347/2020/tc-14-1347-2020.pdf https://doaj.org/article/858ce9160ecc47f48b3f3a765e47f819 |
long_lat |
ENVELOPE(-69.317,-69.317,77.683,77.683) ENVELOPE(-68.521,-68.521,77.598,77.598) |
geographic |
Arctic Bowdoin Bowdoin Fjord |
geographic_facet |
Arctic Bowdoin Bowdoin Fjord |
genre |
Arctic Climate change Godthåbsfjord IASC International Arctic Science Committee Kongsfjord* Kongsfjorden Phytoplankton Sermilik The Cryosphere |
genre_facet |
Arctic Climate change Godthåbsfjord IASC International Arctic Science Committee Kongsfjord* Kongsfjorden Phytoplankton Sermilik The Cryosphere |
op_source |
The Cryosphere, Vol 14, Pp 1347-1383 (2020) |
op_relation |
doi:10.5194/tc-14-1347-2020 1994-0416 1994-0424 https://www.the-cryosphere.net/14/1347/2020/tc-14-1347-2020.pdf https://doaj.org/article/858ce9160ecc47f48b3f3a765e47f819 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-14-1347-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
4 |
container_start_page |
1347 |
op_container_end_page |
1383 |
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1766309447746977792 |