Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland
The estuary is dominated by sea ice and snow cover from winter to spring, and a highly turbid meltwater plume during summer. The aims were to quantify the variability in optical conditions, inorganic nutrients, and primary production between these two extremes, and identify the drivers of variabilit...
Published in: | Arctic, Antarctic, and Alpine Research |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://pure.au.dk/portal/da/publications/summer-meltwater-and-spring-sea-ice-primary-production-light-climate-and-nutrients-in-an-arctic-estuary-kangedussuaq-west-greenland(823c0431-f472-44b2-a406-257f2f171c54).html https://doi.org/10.1080/15230430.2017.1414468 https://pure.au.dk/ws/files/130424496/Summer_meltwater_and_spring_sea_ice_primary_production_light_climate_and_nutrients_in_an_Arctic_estuary_Kangerlussuaq_west_Greenland.pdf |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/823c0431-f472-44b2-a406-257f2f171c54 2023-11-12T04:08:45+01:00 Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland Lund-Hansen, Lars Chresten Hawes, Ian Nielsen, Morten Holtegaard Dahllof, Ingela Sorrell, Brian K. 2018-03-01 application/pdf https://pure.au.dk/portal/da/publications/summer-meltwater-and-spring-sea-ice-primary-production-light-climate-and-nutrients-in-an-arctic-estuary-kangedussuaq-west-greenland(823c0431-f472-44b2-a406-257f2f171c54).html https://doi.org/10.1080/15230430.2017.1414468 https://pure.au.dk/ws/files/130424496/Summer_meltwater_and_spring_sea_ice_primary_production_light_climate_and_nutrients_in_an_Arctic_estuary_Kangerlussuaq_west_Greenland.pdf eng eng https://pure.au.dk/portal/da/publications/summer-meltwater-and-spring-sea-ice-primary-production-light-climate-and-nutrients-in-an-arctic-estuary-kangedussuaq-west-greenland(823c0431-f472-44b2-a406-257f2f171c54).html info:eu-repo/semantics/openAccess Lund-Hansen , L C , Hawes , I , Nielsen , M H , Dahllof , I & Sorrell , B K 2018 , ' Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland ' , Arctic, Antarctic, and Alpine Research , vol. 50 , no. 1 , 1414468 . https://doi.org/10.1080/15230430.2017.1414468 Arctic estuary melt water primary production sea ice PELAGIC PRIMARY PRODUCTION OPTICAL-PROPERTIES MARINE ECOSYSTEM SNOW COVER PHYTOPLANKTON KANGERLUSSUAQ FJORD SHEET ALGAE RIVER article 2018 ftuniaarhuspubl https://doi.org/10.1080/15230430.2017.1414468 2023-10-25T22:59:31Z The estuary is dominated by sea ice and snow cover from winter to spring, and a highly turbid meltwater plume during summer. The aims were to quantify the variability in optical conditions, inorganic nutrients, and primary production between these two extremes, and identify the drivers of variability. Data were obtained during a summer cruise along a transect in the estuary in August 2007, and a spring campaign on the ice in March 2011. The study comprises conductivity, temperature, and depth (CTD), K-d (PAR), K-d (A), PAR transmittance, photic depth, chl-a, nutrients (NO3, NO2, NH3 , PO4, and SiO2), primary production, and sediment concentrations. PAR transmittance varied between 5% below snow and ice and 85% in clear water with 44% in turbid meltwater. Primary production rates were similar below the ice in March (76.8 mg C m(-2) d(-1)) and in the highly turbid meltwater in August (94.8 mg C m(-2) d(-1)), but higher (246.6 mg C m(-2) d(-1)) at the mouth of the fjord. Meltwater inflow was the main driver of variability during summer and the snow and sea ice during spring. Under-ice primary production will increase three-fold with less snow on the sea ice, and the higher meltwater turbidity with increased melting of glacial ice and runoff will only reduce primary production slightly. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Phytoplankton Sea ice Aarhus University: Research Algae River ENVELOPE(100.817,100.817,-66.308,-66.308) Arctic Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Arctic, Antarctic, and Alpine Research 50 1 S100025 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic estuary melt water primary production sea ice PELAGIC PRIMARY PRODUCTION OPTICAL-PROPERTIES MARINE ECOSYSTEM SNOW COVER PHYTOPLANKTON KANGERLUSSUAQ FJORD SHEET ALGAE RIVER |
spellingShingle |
Arctic estuary melt water primary production sea ice PELAGIC PRIMARY PRODUCTION OPTICAL-PROPERTIES MARINE ECOSYSTEM SNOW COVER PHYTOPLANKTON KANGERLUSSUAQ FJORD SHEET ALGAE RIVER Lund-Hansen, Lars Chresten Hawes, Ian Nielsen, Morten Holtegaard Dahllof, Ingela Sorrell, Brian K. Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland |
topic_facet |
Arctic estuary melt water primary production sea ice PELAGIC PRIMARY PRODUCTION OPTICAL-PROPERTIES MARINE ECOSYSTEM SNOW COVER PHYTOPLANKTON KANGERLUSSUAQ FJORD SHEET ALGAE RIVER |
description |
The estuary is dominated by sea ice and snow cover from winter to spring, and a highly turbid meltwater plume during summer. The aims were to quantify the variability in optical conditions, inorganic nutrients, and primary production between these two extremes, and identify the drivers of variability. Data were obtained during a summer cruise along a transect in the estuary in August 2007, and a spring campaign on the ice in March 2011. The study comprises conductivity, temperature, and depth (CTD), K-d (PAR), K-d (A), PAR transmittance, photic depth, chl-a, nutrients (NO3, NO2, NH3 , PO4, and SiO2), primary production, and sediment concentrations. PAR transmittance varied between 5% below snow and ice and 85% in clear water with 44% in turbid meltwater. Primary production rates were similar below the ice in March (76.8 mg C m(-2) d(-1)) and in the highly turbid meltwater in August (94.8 mg C m(-2) d(-1)), but higher (246.6 mg C m(-2) d(-1)) at the mouth of the fjord. Meltwater inflow was the main driver of variability during summer and the snow and sea ice during spring. Under-ice primary production will increase three-fold with less snow on the sea ice, and the higher meltwater turbidity with increased melting of glacial ice and runoff will only reduce primary production slightly. |
format |
Article in Journal/Newspaper |
author |
Lund-Hansen, Lars Chresten Hawes, Ian Nielsen, Morten Holtegaard Dahllof, Ingela Sorrell, Brian K. |
author_facet |
Lund-Hansen, Lars Chresten Hawes, Ian Nielsen, Morten Holtegaard Dahllof, Ingela Sorrell, Brian K. |
author_sort |
Lund-Hansen, Lars Chresten |
title |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland |
title_short |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland |
title_full |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland |
title_fullStr |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland |
title_full_unstemmed |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland |
title_sort |
summer meltwater and spring sea ice primary production, light climate and nutrients in an arctic estuary, kangedussuaq, west greenland |
publishDate |
2018 |
url |
https://pure.au.dk/portal/da/publications/summer-meltwater-and-spring-sea-ice-primary-production-light-climate-and-nutrients-in-an-arctic-estuary-kangedussuaq-west-greenland(823c0431-f472-44b2-a406-257f2f171c54).html https://doi.org/10.1080/15230430.2017.1414468 https://pure.au.dk/ws/files/130424496/Summer_meltwater_and_spring_sea_ice_primary_production_light_climate_and_nutrients_in_an_Arctic_estuary_Kangerlussuaq_west_Greenland.pdf |
long_lat |
ENVELOPE(100.817,100.817,-66.308,-66.308) ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Algae River Arctic Greenland Kangerlussuaq |
geographic_facet |
Algae River Arctic Greenland Kangerlussuaq |
genre |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Phytoplankton Sea ice |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Phytoplankton Sea ice |
op_source |
Lund-Hansen , L C , Hawes , I , Nielsen , M H , Dahllof , I & Sorrell , B K 2018 , ' Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland ' , Arctic, Antarctic, and Alpine Research , vol. 50 , no. 1 , 1414468 . https://doi.org/10.1080/15230430.2017.1414468 |
op_relation |
https://pure.au.dk/portal/da/publications/summer-meltwater-and-spring-sea-ice-primary-production-light-climate-and-nutrients-in-an-arctic-estuary-kangedussuaq-west-greenland(823c0431-f472-44b2-a406-257f2f171c54).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/15230430.2017.1414468 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
50 |
container_issue |
1 |
container_start_page |
S100025 |
_version_ |
1782328947576406016 |