Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt
Despite scientific interest in the investigation of biogeochemical changes in meltwaters of the Antarctic Peninsula, we still lack an understanding of the seasonal dynamics and release of dissolved and particulate carbon, nutrients, as well as trace metals from Antarctic snowpacks. Harsh conditions,...
Published in: | Frontiers in Earth Science |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2589788 https://doi.org/10.3389/feart.2018.00201 |
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fthsvestlandet:oai:hvlopen.brage.unit.no:11250/2589788 2024-03-03T08:36:13+00:00 Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt Nowak, Aga Hodson, Andrew J. Turchyn, Alexandra V. Antarctica, Adelaide Island 2018 application/pdf http://hdl.handle.net/11250/2589788 https://doi.org/10.3389/feart.2018.00201 eng eng Frontiers Media S.A. Andre: Antarctic Science Scheme CASS-120 Andre: ERC StG 307582 Andre: Natural Environmental Research Council grant NE/H014446/1 Nowak, A., Hodson, A., & Turchyn, A. V. (2018). Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt. Frontiers in Earth Science, 6. urn:issn:2296-6463 http://hdl.handle.net/11250/2589788 https://doi.org/10.3389/feart.2018.00201 cristin:1683279 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright © 2018 Nowak, Hodson and Turchyn. 16 6 Frontiers in Earth Science Antarctic DOC Antarctic snow biogeochemistry Antarctic snowmelt enrichment iron enrichment in Antarctic meltwaters coastal fringe of Antarctic Peninsula snowmelt DOC nutrients in snowmelt VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Journal article Peer reviewed 2018 fthsvestlandet https://doi.org/10.3389/feart.2018.00201 2024-02-02T12:40:48Z Despite scientific interest in the investigation of biogeochemical changes in meltwaters of the Antarctic Peninsula, we still lack an understanding of the seasonal dynamics and release of dissolved and particulate carbon, nutrients, as well as trace metals from Antarctic snowpacks. Harsh conditions, lack of appreciation of the heterogeneity of the environment, as well as logistical constraints during fieldwork mean there is great demand for more detailed and comprehensive research. Therefore, a unique, comprehensive study of snowpack biogeochemistry was performed in the Ryder Bay area of the Antarctic Peninsula during the entire 2016/2017 melt season. Two-hundred snowpack and snowmelt samples were collected throughout the campaign, to quantify for the first time, seasonal dynamics and export of dissolved carbon, in-vivo chlorophyll, nutrient, and trace metals from Antarctic snowpack in various locations. Our study uncovered the importance of environmental heterogeneity with respect to the export of solutes and carbon. A distinctive split in the temporal dynamics of solute export was found, suggesting that some solutes are rapidly delivered to coastal environments early in the summer whilst others are delivered more gradually throughout it. Coastal, low elevation snowpacks were identified as “power plants” of microbial activity, playing an important role in the regulation of land-ocean fluxes of labile carbon and bio-limiting macro- and micro-nutrients. We also found that multiannual snow residing deep below the surface can further contribute to biogeochemical enrichment of coastal ecosystems. Additionally, inland snowpack have been identified as a store for nutrients, dissolved organic carbon and chlorophyll. Lastly, we show that a number of factors (environmental characteristics, geochemical heterogeneity, and internal biogeochemical processes in snow) make simple snowpack surveys insufficient for the prediction of biogeochemical fluxes carried by snowmelt runoff into the marine environment. A return to ... Article in Journal/Newspaper Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Høgskulen på Vestlandet: HVL Open Antarctic The Antarctic Antarctic Peninsula Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Bay ENVELOPE(-68.333,-68.333,-67.567,-67.567) Frontiers in Earth Science 6 |
institution |
Open Polar |
collection |
Høgskulen på Vestlandet: HVL Open |
op_collection_id |
fthsvestlandet |
language |
English |
topic |
Antarctic DOC Antarctic snow biogeochemistry Antarctic snowmelt enrichment iron enrichment in Antarctic meltwaters coastal fringe of Antarctic Peninsula snowmelt DOC nutrients in snowmelt VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 |
spellingShingle |
Antarctic DOC Antarctic snow biogeochemistry Antarctic snowmelt enrichment iron enrichment in Antarctic meltwaters coastal fringe of Antarctic Peninsula snowmelt DOC nutrients in snowmelt VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Nowak, Aga Hodson, Andrew J. Turchyn, Alexandra V. Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt |
topic_facet |
Antarctic DOC Antarctic snow biogeochemistry Antarctic snowmelt enrichment iron enrichment in Antarctic meltwaters coastal fringe of Antarctic Peninsula snowmelt DOC nutrients in snowmelt VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 |
description |
Despite scientific interest in the investigation of biogeochemical changes in meltwaters of the Antarctic Peninsula, we still lack an understanding of the seasonal dynamics and release of dissolved and particulate carbon, nutrients, as well as trace metals from Antarctic snowpacks. Harsh conditions, lack of appreciation of the heterogeneity of the environment, as well as logistical constraints during fieldwork mean there is great demand for more detailed and comprehensive research. Therefore, a unique, comprehensive study of snowpack biogeochemistry was performed in the Ryder Bay area of the Antarctic Peninsula during the entire 2016/2017 melt season. Two-hundred snowpack and snowmelt samples were collected throughout the campaign, to quantify for the first time, seasonal dynamics and export of dissolved carbon, in-vivo chlorophyll, nutrient, and trace metals from Antarctic snowpack in various locations. Our study uncovered the importance of environmental heterogeneity with respect to the export of solutes and carbon. A distinctive split in the temporal dynamics of solute export was found, suggesting that some solutes are rapidly delivered to coastal environments early in the summer whilst others are delivered more gradually throughout it. Coastal, low elevation snowpacks were identified as “power plants” of microbial activity, playing an important role in the regulation of land-ocean fluxes of labile carbon and bio-limiting macro- and micro-nutrients. We also found that multiannual snow residing deep below the surface can further contribute to biogeochemical enrichment of coastal ecosystems. Additionally, inland snowpack have been identified as a store for nutrients, dissolved organic carbon and chlorophyll. Lastly, we show that a number of factors (environmental characteristics, geochemical heterogeneity, and internal biogeochemical processes in snow) make simple snowpack surveys insufficient for the prediction of biogeochemical fluxes carried by snowmelt runoff into the marine environment. A return to ... |
format |
Article in Journal/Newspaper |
author |
Nowak, Aga Hodson, Andrew J. Turchyn, Alexandra V. |
author_facet |
Nowak, Aga Hodson, Andrew J. Turchyn, Alexandra V. |
author_sort |
Nowak, Aga |
title |
Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt |
title_short |
Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt |
title_full |
Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt |
title_fullStr |
Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt |
title_full_unstemmed |
Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt |
title_sort |
spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime antarctic snow and snowmelt |
publisher |
Frontiers Media S.A. |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2589788 https://doi.org/10.3389/feart.2018.00201 |
op_coverage |
Antarctica, Adelaide Island |
long_lat |
ENVELOPE(-68.914,-68.914,-67.762,-67.762) ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-68.333,-68.333,-67.567,-67.567) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Adelaide Island Ryder Ryder Bay |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Adelaide Island Ryder Ryder Bay |
genre |
Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica |
genre_facet |
Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica |
op_source |
16 6 Frontiers in Earth Science |
op_relation |
Andre: Antarctic Science Scheme CASS-120 Andre: ERC StG 307582 Andre: Natural Environmental Research Council grant NE/H014446/1 Nowak, A., Hodson, A., & Turchyn, A. V. (2018). Spatial and temporal dynamics of dissolved organic carbon, chlorophyll, nutrients, and trace metals in maritime Antarctic snow and snowmelt. Frontiers in Earth Science, 6. urn:issn:2296-6463 http://hdl.handle.net/11250/2589788 https://doi.org/10.3389/feart.2018.00201 cristin:1683279 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright © 2018 Nowak, Hodson and Turchyn. |
op_doi |
https://doi.org/10.3389/feart.2018.00201 |
container_title |
Frontiers in Earth Science |
container_volume |
6 |
_version_ |
1792495795191152640 |