The biogeochemical impact of glacial meltwater from Southwest Greenland
Biogeochemical cycling in high-latitude regions has a disproportionate impact on global nutrient budgets. Here, we introduce a holistic, multi-disciplinary framework for elucidating the influence of glacial meltwaters, shelf currents, and biological production on biogeochemical cycling in high-latit...
Published in: | Progress in Oceanography |
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/124100/ https://doi.org/10.1016/j.pocean.2019.102126 https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:124100 2023-08-27T04:09:47+02:00 The biogeochemical impact of glacial meltwater from Southwest Greenland Hendry, Katharine R. Huvenne, Veerle A.I. Robinson, Laura F. Annett, Amber Badger, Marcus Jacobel, Allison W. Ng, Hong Chin Opher, Jacob Pickering, Rebecca A. Taylor, Michelle L. Bates, Stephanie L. Cooper, Adam Cushman, Grace G. Goodwin, Claire Hoy, Shannon Rowland, George Samperiz Vizcaino, Ana Williams, James A. Achterberg, Eric P. Arrowsmith, Carol Alexander Brearley, J. Henley, Sian F. Krause, Jeffrey W. Leng, Melanie J. Li, Tao McManus, Jerry F. Meredith, Michael P. Perkins, Rupert Woodward, E. Malcolm S. 2019-09-30 application/pdf https://orca.cardiff.ac.uk/id/eprint/124100/ https://doi.org/10.1016/j.pocean.2019.102126 https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf en eng Elsevier https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf Hendry, Katharine R., Huvenne, Veerle A.I., Robinson, Laura F., Annett, Amber, Badger, Marcus, Jacobel, Allison W., Ng, Hong Chin, Opher, Jacob, Pickering, Rebecca A., Taylor, Michelle L., Bates, Stephanie L., Cooper, Adam, Cushman, Grace G., Goodwin, Claire, Hoy, Shannon, Rowland, George, Samperiz Vizcaino, Ana https://orca.cardiff.ac.uk/view/cardiffauthors/A2381374R.html orcid:0000-0002-9553-1124 orcid:0000-0002-9553-1124, Williams, James A., Achterberg, Eric P., Arrowsmith, Carol, Alexander Brearley, J., Henley, Sian F., Krause, Jeffrey W., Leng, Melanie J., Li, Tao, McManus, Jerry F., Meredith, Michael P., Perkins, Rupert https://orca.cardiff.ac.uk/view/cardiffauthors/A0101677.html orcid:0000-0002-0810-2656 orcid:0000-0002-0810-2656 and Woodward, E. Malcolm S. 2019. The biogeochemical impact of glacial meltwater from Southwest Greenland. Progress in Oceanography 176 , 102126. 10.1016/j.pocean.2019.102126 https://doi.org/10.1016/j.pocean.2019.102126 file https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf doi:10.1016/j.pocean.2019.102126 cc_by_nc_nd Article PeerReviewed 2019 ftunivcardiff https://doi.org/10.1016/j.pocean.2019.102126 2023-08-10T22:35:14Z Biogeochemical cycling in high-latitude regions has a disproportionate impact on global nutrient budgets. Here, we introduce a holistic, multi-disciplinary framework for elucidating the influence of glacial meltwaters, shelf currents, and biological production on biogeochemical cycling in high-latitude continental margins, with a focus on the silica cycle. Our findings highlight the impact of significant glacial discharge on nutrient supply to shelf and slope waters, as well as surface and benthic production in these regions, over a range of timescales from days to thousands of years. Whilst biological uptake in fjords and strong diatom activity in coastal waters maintains low dissolved silicon concentrations in surface waters, we find important but spatially heterogeneous additions of particulates into the system, which are transported rapidly away from the shore. We expect the glacially-derived particles – together with biogenic silica tests – to be cycled rapidly through shallow sediments, resulting in a strong benthic flux of dissolved silicon. Entrainment of this benthic silicon into boundary currents may supply an important source of this key nutrient into the Labrador Sea, and is also likely to recirculate back into the deep fjords inshore. This study illustrates how geochemical and oceanographic analyses can be used together to probe further into modern nutrient cycling in this region, as well as the palaeoclimatological approaches to investigating changes in glacial meltwater discharge through time, especially during periods of rapid climatic change in the Late Quaternary. Article in Journal/Newspaper Greenland Labrador Sea Cardiff University: ORCA (Online Research @ Cardiff) Greenland Progress in Oceanography 176 102126 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
description |
Biogeochemical cycling in high-latitude regions has a disproportionate impact on global nutrient budgets. Here, we introduce a holistic, multi-disciplinary framework for elucidating the influence of glacial meltwaters, shelf currents, and biological production on biogeochemical cycling in high-latitude continental margins, with a focus on the silica cycle. Our findings highlight the impact of significant glacial discharge on nutrient supply to shelf and slope waters, as well as surface and benthic production in these regions, over a range of timescales from days to thousands of years. Whilst biological uptake in fjords and strong diatom activity in coastal waters maintains low dissolved silicon concentrations in surface waters, we find important but spatially heterogeneous additions of particulates into the system, which are transported rapidly away from the shore. We expect the glacially-derived particles – together with biogenic silica tests – to be cycled rapidly through shallow sediments, resulting in a strong benthic flux of dissolved silicon. Entrainment of this benthic silicon into boundary currents may supply an important source of this key nutrient into the Labrador Sea, and is also likely to recirculate back into the deep fjords inshore. This study illustrates how geochemical and oceanographic analyses can be used together to probe further into modern nutrient cycling in this region, as well as the palaeoclimatological approaches to investigating changes in glacial meltwater discharge through time, especially during periods of rapid climatic change in the Late Quaternary. |
format |
Article in Journal/Newspaper |
author |
Hendry, Katharine R. Huvenne, Veerle A.I. Robinson, Laura F. Annett, Amber Badger, Marcus Jacobel, Allison W. Ng, Hong Chin Opher, Jacob Pickering, Rebecca A. Taylor, Michelle L. Bates, Stephanie L. Cooper, Adam Cushman, Grace G. Goodwin, Claire Hoy, Shannon Rowland, George Samperiz Vizcaino, Ana Williams, James A. Achterberg, Eric P. Arrowsmith, Carol Alexander Brearley, J. Henley, Sian F. Krause, Jeffrey W. Leng, Melanie J. Li, Tao McManus, Jerry F. Meredith, Michael P. Perkins, Rupert Woodward, E. Malcolm S. |
spellingShingle |
Hendry, Katharine R. Huvenne, Veerle A.I. Robinson, Laura F. Annett, Amber Badger, Marcus Jacobel, Allison W. Ng, Hong Chin Opher, Jacob Pickering, Rebecca A. Taylor, Michelle L. Bates, Stephanie L. Cooper, Adam Cushman, Grace G. Goodwin, Claire Hoy, Shannon Rowland, George Samperiz Vizcaino, Ana Williams, James A. Achterberg, Eric P. Arrowsmith, Carol Alexander Brearley, J. Henley, Sian F. Krause, Jeffrey W. Leng, Melanie J. Li, Tao McManus, Jerry F. Meredith, Michael P. Perkins, Rupert Woodward, E. Malcolm S. The biogeochemical impact of glacial meltwater from Southwest Greenland |
author_facet |
Hendry, Katharine R. Huvenne, Veerle A.I. Robinson, Laura F. Annett, Amber Badger, Marcus Jacobel, Allison W. Ng, Hong Chin Opher, Jacob Pickering, Rebecca A. Taylor, Michelle L. Bates, Stephanie L. Cooper, Adam Cushman, Grace G. Goodwin, Claire Hoy, Shannon Rowland, George Samperiz Vizcaino, Ana Williams, James A. Achterberg, Eric P. Arrowsmith, Carol Alexander Brearley, J. Henley, Sian F. Krause, Jeffrey W. Leng, Melanie J. Li, Tao McManus, Jerry F. Meredith, Michael P. Perkins, Rupert Woodward, E. Malcolm S. |
author_sort |
Hendry, Katharine R. |
title |
The biogeochemical impact of glacial meltwater from Southwest Greenland |
title_short |
The biogeochemical impact of glacial meltwater from Southwest Greenland |
title_full |
The biogeochemical impact of glacial meltwater from Southwest Greenland |
title_fullStr |
The biogeochemical impact of glacial meltwater from Southwest Greenland |
title_full_unstemmed |
The biogeochemical impact of glacial meltwater from Southwest Greenland |
title_sort |
biogeochemical impact of glacial meltwater from southwest greenland |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://orca.cardiff.ac.uk/id/eprint/124100/ https://doi.org/10.1016/j.pocean.2019.102126 https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Labrador Sea |
genre_facet |
Greenland Labrador Sea |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf Hendry, Katharine R., Huvenne, Veerle A.I., Robinson, Laura F., Annett, Amber, Badger, Marcus, Jacobel, Allison W., Ng, Hong Chin, Opher, Jacob, Pickering, Rebecca A., Taylor, Michelle L., Bates, Stephanie L., Cooper, Adam, Cushman, Grace G., Goodwin, Claire, Hoy, Shannon, Rowland, George, Samperiz Vizcaino, Ana https://orca.cardiff.ac.uk/view/cardiffauthors/A2381374R.html orcid:0000-0002-9553-1124 orcid:0000-0002-9553-1124, Williams, James A., Achterberg, Eric P., Arrowsmith, Carol, Alexander Brearley, J., Henley, Sian F., Krause, Jeffrey W., Leng, Melanie J., Li, Tao, McManus, Jerry F., Meredith, Michael P., Perkins, Rupert https://orca.cardiff.ac.uk/view/cardiffauthors/A0101677.html orcid:0000-0002-0810-2656 orcid:0000-0002-0810-2656 and Woodward, E. Malcolm S. 2019. The biogeochemical impact of glacial meltwater from Southwest Greenland. Progress in Oceanography 176 , 102126. 10.1016/j.pocean.2019.102126 https://doi.org/10.1016/j.pocean.2019.102126 file https://orca.cardiff.ac.uk/id/eprint/124100/1/Hendry-2019-author-formatted-FINAL.pdf doi:10.1016/j.pocean.2019.102126 |
op_rights |
cc_by_nc_nd |
op_doi |
https://doi.org/10.1016/j.pocean.2019.102126 |
container_title |
Progress in Oceanography |
container_volume |
176 |
container_start_page |
102126 |
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1775351367971373056 |