Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, 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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Taylor & Francis Group
2018
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Online Access: | https://doi.org/10.1080/15230430.2017.1414468 https://doaj.org/article/ec63ea26c29141c3a0ba3a3a3b834683 |
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ftdoajarticles:oai:doaj.org/article:ec63ea26c29141c3a0ba3a3a3b834683 2023-05-15T14:14:29+02:00 Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland Lars Chresten Lund-Hansen Ian Hawes Morten Holtegaard Nielsen Ingela Dahllöf Brian K Sorrell 2018-01-01T00:00:00Z https://doi.org/10.1080/15230430.2017.1414468 https://doaj.org/article/ec63ea26c29141c3a0ba3a3a3b834683 EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15230430.2017.1414468 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2017.1414468 https://doaj.org/article/ec63ea26c29141c3a0ba3a3a3b834683 Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018) arctic estuary melt water primary production sea ice Environmental sciences GE1-350 Ecology QH540-549.5 article 2018 ftdoajarticles https://doi.org/10.1080/15230430.2017.1414468 2022-12-31T07:37:05Z 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), Kd(PAR), Kd(λ), 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 Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Arctic, Antarctic, and Alpine Research 50 1 S100025 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic estuary melt water primary production sea ice Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
arctic estuary melt water primary production sea ice Environmental sciences GE1-350 Ecology QH540-549.5 Lars Chresten Lund-Hansen Ian Hawes Morten Holtegaard Nielsen Ingela Dahllöf Brian K Sorrell Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland |
topic_facet |
arctic estuary melt water primary production sea ice Environmental sciences GE1-350 Ecology QH540-549.5 |
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), Kd(PAR), Kd(λ), 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 |
Lars Chresten Lund-Hansen Ian Hawes Morten Holtegaard Nielsen Ingela Dahllöf Brian K Sorrell |
author_facet |
Lars Chresten Lund-Hansen Ian Hawes Morten Holtegaard Nielsen Ingela Dahllöf Brian K Sorrell |
author_sort |
Lars Chresten Lund-Hansen |
title |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland |
title_short |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland |
title_full |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland |
title_fullStr |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland |
title_full_unstemmed |
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangerlussuaq, west Greenland |
title_sort |
summer meltwater and spring sea ice primary production, light climate and nutrients in an arctic estuary, kangerlussuaq, west greenland |
publisher |
Taylor & Francis Group |
publishDate |
2018 |
url |
https://doi.org/10.1080/15230430.2017.1414468 https://doaj.org/article/ec63ea26c29141c3a0ba3a3a3b834683 |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Arctic Greenland Kangerlussuaq |
geographic_facet |
Arctic Greenland Kangerlussuaq |
genre |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Sea ice |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Sea ice |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018) |
op_relation |
http://dx.doi.org/10.1080/15230430.2017.1414468 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2017.1414468 https://doaj.org/article/ec63ea26c29141c3a0ba3a3a3b834683 |
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_ |
1766286923680186368 |