Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland
We investigated the microalgal community in sea ice and in the water column of Kobbefjord, west Greenland, through an entire sea ice season, Temporal variation in physical (photosynthetically active radiation [PAR), temperature, brine volume) and chemical (salinity, nutrient concentration) propertie...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | https://portal.findresearcher.sdu.dk/da/publications/86080605-a086-46f3-9a50-2825fe97e87d |
id |
ftsydanskunivpub:oai:sdu.dk:publications/86080605-a086-46f3-9a50-2825fe97e87d |
---|---|
record_format |
openpolar |
spelling |
ftsydanskunivpub:oai:sdu.dk:publications/86080605-a086-46f3-9a50-2825fe97e87d 2023-05-15T14:24:01+02:00 Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland Mikkelsen, Ditte Marie Rysgaard, Søren Glud, Ronnie N. 2008 https://portal.findresearcher.sdu.dk/da/publications/86080605-a086-46f3-9a50-2825fe97e87d eng eng info:eu-repo/semantics/restrictedAccess Mikkelsen , D M , Rysgaard , S & Glud , R N 2008 , ' Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland ' , Marine Ecology - Progress Series , vol. 368 , pp. 65-74 . article 2008 ftsydanskunivpub 2022-08-14T08:24:37Z We investigated the microalgal community in sea ice and in the water column of Kobbefjord, west Greenland, through an entire sea ice season, Temporal variation in physical (photosynthetically active radiation [PAR), temperature, brine volume) and chemical (salinity, nutrient concentration) properties confirmed that sea ice is a very dynamic habitat. Nevertheless, a viable sea ice algal comuunity was present throughout the year, with a species succession from flagellate dominance (dinoflagellates and cryptophytes) in December to February, followed by Chaetoceros simplex (a centric diatom) in March and pennate diatoms in May. Sea ice algal composition, biomass and productivity were influenced by PAR and brine volume, with colonization (enhanced by large brine volume) apparent during sea ice melt. Sea ice chlorophyll levels were generally low (< 0.5 mu g chl l(-1)), with 2 distinct blooms (maxima of 1.8 and 2.6 mu g chl](-1) in March and May, respectively). Primary production mirrored biomass dynamic, which had 2 seasonal peaks of ca. 21 and 15 mg Cm-2 d(-1). Integrated primary production over 7 mo was 0.8 g Cm-2 in sea ice and 94.4 g C m(-2) in the water column, with the vast majority of the pelagic production occurring just after sea ice melt (when primary production peaked at 4.2 g C m-2 d(-1)). There was no conclusive evidence of algal seeding. Sea ice algae contributed 30% of total (sympagic plus pelagic) primary production during the sea ice season, but less than 1 %, annually. Article in Journal/Newspaper Arctic Arctic Greenland ice algae Sea ice University of Southern Denmark Research Portal Arctic Greenland Kobbefjord ENVELOPE(-51.527,-51.527,64.177,64.177) |
institution |
Open Polar |
collection |
University of Southern Denmark Research Portal |
op_collection_id |
ftsydanskunivpub |
language |
English |
description |
We investigated the microalgal community in sea ice and in the water column of Kobbefjord, west Greenland, through an entire sea ice season, Temporal variation in physical (photosynthetically active radiation [PAR), temperature, brine volume) and chemical (salinity, nutrient concentration) properties confirmed that sea ice is a very dynamic habitat. Nevertheless, a viable sea ice algal comuunity was present throughout the year, with a species succession from flagellate dominance (dinoflagellates and cryptophytes) in December to February, followed by Chaetoceros simplex (a centric diatom) in March and pennate diatoms in May. Sea ice algal composition, biomass and productivity were influenced by PAR and brine volume, with colonization (enhanced by large brine volume) apparent during sea ice melt. Sea ice chlorophyll levels were generally low (< 0.5 mu g chl l(-1)), with 2 distinct blooms (maxima of 1.8 and 2.6 mu g chl](-1) in March and May, respectively). Primary production mirrored biomass dynamic, which had 2 seasonal peaks of ca. 21 and 15 mg Cm-2 d(-1). Integrated primary production over 7 mo was 0.8 g Cm-2 in sea ice and 94.4 g C m(-2) in the water column, with the vast majority of the pelagic production occurring just after sea ice melt (when primary production peaked at 4.2 g C m-2 d(-1)). There was no conclusive evidence of algal seeding. Sea ice algae contributed 30% of total (sympagic plus pelagic) primary production during the sea ice season, but less than 1 %, annually. |
format |
Article in Journal/Newspaper |
author |
Mikkelsen, Ditte Marie Rysgaard, Søren Glud, Ronnie N. |
spellingShingle |
Mikkelsen, Ditte Marie Rysgaard, Søren Glud, Ronnie N. Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland |
author_facet |
Mikkelsen, Ditte Marie Rysgaard, Søren Glud, Ronnie N. |
author_sort |
Mikkelsen, Ditte Marie |
title |
Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland |
title_short |
Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland |
title_full |
Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland |
title_fullStr |
Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland |
title_full_unstemmed |
Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland |
title_sort |
microalgal composition and primary production in arctic sea ice: a seasonal study from kobbeijord (kangerluarsunnguaq), west greenland |
publishDate |
2008 |
url |
https://portal.findresearcher.sdu.dk/da/publications/86080605-a086-46f3-9a50-2825fe97e87d |
long_lat |
ENVELOPE(-51.527,-51.527,64.177,64.177) |
geographic |
Arctic Greenland Kobbefjord |
geographic_facet |
Arctic Greenland Kobbefjord |
genre |
Arctic Arctic Greenland ice algae Sea ice |
genre_facet |
Arctic Arctic Greenland ice algae Sea ice |
op_source |
Mikkelsen , D M , Rysgaard , S & Glud , R N 2008 , ' Microalgal composition and primary production in Arctic sea ice: a seasonal study from Kobbeijord (Kangerluarsunnguaq), West Greenland ' , Marine Ecology - Progress Series , vol. 368 , pp. 65-74 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766296487671627776 |