Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples
We evaluated the role of microzooplankton (sensu latto, grazers <500 µm) in determining the fate of phytoplankton production (PP) along a glacier-to-open sea transect in the Greenland subarctic fjord, Godthabfjord. Based on the distribution of size fractionated chlorophyll a (chl a) concentration...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808238 2024-09-15T17:50:49+00:00 Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples Calbet, Albert Riisgaard, Karen Saiz, Enric Zamora, Sara Stedmon, Colin A Nielsen, Torkel Gissel MEDIAN LATITUDE: 64.366621 * MEDIAN LONGITUDE: -51.338185 * SOUTH-BOUND LATITUDE: 63.898330 * WEST-BOUND LONGITUDE: -53.245000 * NORTH-BOUND LATITUDE: 64.683330 * EAST-BOUND LONGITUDE: -50.318330 * DATE/TIME START: 2010-06-08T00:00:00 * DATE/TIME END: 2010-06-21T00:00:00 2011 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.808238 https://doi.org/10.1594/PANGAEA.808238 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.808238 https://doi.org/10.1594/PANGAEA.808238 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Calbet, Albert; Riisgaard, Karen; Saiz, Enric; Zamora, Sara; Stedmon, Colin A; Nielsen, Torkel Gissel (2011): Phytoplankton growth and microzooplankton grazing along a sub-Arctic fjord (Godthabsfjord, west Greenland). Marine Ecology Progress Series, 442, 11-22, https://doi.org/10.3354/meps09343 International Polar Year (2007-2008) IPY dataset publication series 2011 ftpangaea https://doi.org/10.1594/PANGAEA.80823810.3354/meps09343 2024-07-24T02:31:21Z We evaluated the role of microzooplankton (sensu latto, grazers <500 µm) in determining the fate of phytoplankton production (PP) along a glacier-to-open sea transect in the Greenland subarctic fjord, Godthabfjord. Based on the distribution of size fractionated chlorophyll a (chl a) concentrations we established 4 zones: (1) Fyllas Bank, characterized by deep chl a maxima (ca. 30 to 40 m) consisting of large cells, (2) the mouth and main branch of the fjord, where phytoplankton was relatively homogeneously distributed in the upper 30 m layer, (3) inner waters influenced by glacial melt water and upwelling, with high chl a concentrations (up to 12 µg/l) in the >10 µm fraction within a narrow (2 m) subsurface layer, and (4) the Kapisigdlit branch of the fjord, ice-free, and characterized with a thick and deep chl a maximum layer. Overall, microzooplankton grazing impact on primary production was variable and seldom significant in the Fyllas Bank and mouth of the fjord, quite intensive (up to >100% potential PP consumed daily) in the middle part of the main and Kapisigdlit branches of the fjord, and rather low and unable to control the fast growing phytoplankton population inhabiting the nutrient rich waters in the upwelling area in the vicinity of the glacier. Most of the grazing impact was on the <10 µm phytoplankton fraction, and the major grazers of the system seem to be >20 µm microzooplankton, as deducted from additional dilution experiments removing this size fraction. Overall, little or no export of phytoplankton out of the fjord to the Fyllas Bank can be determined from our data. Other/Unknown Material Arctic glacier Greenland International Polar Year IPY Subarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-53.245000,-50.318330,64.683330,63.898330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Calbet, Albert Riisgaard, Karen Saiz, Enric Zamora, Sara Stedmon, Colin A Nielsen, Torkel Gissel Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
We evaluated the role of microzooplankton (sensu latto, grazers <500 µm) in determining the fate of phytoplankton production (PP) along a glacier-to-open sea transect in the Greenland subarctic fjord, Godthabfjord. Based on the distribution of size fractionated chlorophyll a (chl a) concentrations we established 4 zones: (1) Fyllas Bank, characterized by deep chl a maxima (ca. 30 to 40 m) consisting of large cells, (2) the mouth and main branch of the fjord, where phytoplankton was relatively homogeneously distributed in the upper 30 m layer, (3) inner waters influenced by glacial melt water and upwelling, with high chl a concentrations (up to 12 µg/l) in the >10 µm fraction within a narrow (2 m) subsurface layer, and (4) the Kapisigdlit branch of the fjord, ice-free, and characterized with a thick and deep chl a maximum layer. Overall, microzooplankton grazing impact on primary production was variable and seldom significant in the Fyllas Bank and mouth of the fjord, quite intensive (up to >100% potential PP consumed daily) in the middle part of the main and Kapisigdlit branches of the fjord, and rather low and unable to control the fast growing phytoplankton population inhabiting the nutrient rich waters in the upwelling area in the vicinity of the glacier. Most of the grazing impact was on the <10 µm phytoplankton fraction, and the major grazers of the system seem to be >20 µm microzooplankton, as deducted from additional dilution experiments removing this size fraction. Overall, little or no export of phytoplankton out of the fjord to the Fyllas Bank can be determined from our data. |
format |
Other/Unknown Material |
author |
Calbet, Albert Riisgaard, Karen Saiz, Enric Zamora, Sara Stedmon, Colin A Nielsen, Torkel Gissel |
author_facet |
Calbet, Albert Riisgaard, Karen Saiz, Enric Zamora, Sara Stedmon, Colin A Nielsen, Torkel Gissel |
author_sort |
Calbet, Albert |
title |
Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples |
title_short |
Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples |
title_full |
Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples |
title_fullStr |
Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples |
title_full_unstemmed |
Chlorophyll a content, protist biomass and experimental plankton growth and mortality in West Greenland water samples |
title_sort |
chlorophyll a content, protist biomass and experimental plankton growth and mortality in west greenland water samples |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.808238 https://doi.org/10.1594/PANGAEA.808238 |
op_coverage |
MEDIAN LATITUDE: 64.366621 * MEDIAN LONGITUDE: -51.338185 * SOUTH-BOUND LATITUDE: 63.898330 * WEST-BOUND LONGITUDE: -53.245000 * NORTH-BOUND LATITUDE: 64.683330 * EAST-BOUND LONGITUDE: -50.318330 * DATE/TIME START: 2010-06-08T00:00:00 * DATE/TIME END: 2010-06-21T00:00:00 |
long_lat |
ENVELOPE(-53.245000,-50.318330,64.683330,63.898330) |
genre |
Arctic glacier Greenland International Polar Year IPY Subarctic |
genre_facet |
Arctic glacier Greenland International Polar Year IPY Subarctic |
op_source |
Supplement to: Calbet, Albert; Riisgaard, Karen; Saiz, Enric; Zamora, Sara; Stedmon, Colin A; Nielsen, Torkel Gissel (2011): Phytoplankton growth and microzooplankton grazing along a sub-Arctic fjord (Godthabsfjord, west Greenland). Marine Ecology Progress Series, 442, 11-22, https://doi.org/10.3354/meps09343 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.808238 https://doi.org/10.1594/PANGAEA.808238 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80823810.3354/meps09343 |
_version_ |
1810292612733599744 |