Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen)
In Kongsfjorden (Spitsbergen), we quantified the zonation of visually dominant macroalgal taxa and of detached macroalgae from underwater videos taken in summer 2009 at six transects between 2 and 138 m water depth. For the first time, we provide information on the occurrence of deep water red algae...
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ftfuberlin:oai:refubium.fu-berlin.de:fub188/36096 2023-05-15T15:00:31+02:00 Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) Schimani, Katherina Zacher, Katharina Jerosch, Kerstin Pehlke, Hendrik Wiencke, Christian Bartsch, Inka 2022 15 Seiten application/pdf https://refubium.fu-berlin.de/handle/fub188/36096 https://doi.org/10.17169/refubium-35812 https://doi.org/10.1007/s00300-022-03072-x eng eng https://refubium.fu-berlin.de/handle/fub188/36096 http://dx.doi.org/10.17169/refubium-35812 doi:10.1007/s00300-022-03072-x https://creativecommons.org/licenses/by/4.0/ CC-BY Arctic fjord Detached macroalgae Lower macroalgal depth distribution Deep sea ddc:570 doc-type:article 2022 ftfuberlin https://doi.org/10.17169/refubium-35812 https://doi.org/10.1007/s00300-022-03072-x 2022-09-04T22:23:14Z In Kongsfjorden (Spitsbergen), we quantified the zonation of visually dominant macroalgal taxa and of detached macroalgae from underwater videos taken in summer 2009 at six transects between 2 and 138 m water depth. For the first time, we provide information on the occurrence of deep water red algae below the kelp forest and of detached macroalgae at water depth > 30 m. The presence and depth distribution of visually dominant red algae were especially pronounced at the outer fjord, decreased with proximity to the glacial front and they were absent at the innermost locations. Deepest crustose coralline red algae and foliose red algae were observed at 72 and 68 m, respectively. Brown algae were distributed along the entire fjord axis at 2–32 m. Green algae were only present at the middle to inner fjord and at areas influenced by physical disturbance at water depths of 2–26 m. With proximity to the inner fjord the depth distribution of all macroalgae became shallower and only extended to 18 m depth at the innermost location. Major recipients of detached macroalgae were sites at the shallower inner fjord and at the middle fjord below the photic zone at depths to 138 m. They may either fuel deep water secondary production, decompose or support carbon sequestration. Univariate and community analyses of macroalgal classes including detached macroalgae across transects and over depths reveal a considerable difference in community structure between the outermost sites, the central part and the inner fjord areas, reflecting the strong environmental gradients along glacial fjords. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden Spitsbergen Freie Universität Berlin: Refubium (FU Berlin) Arctic |
institution |
Open Polar |
collection |
Freie Universität Berlin: Refubium (FU Berlin) |
op_collection_id |
ftfuberlin |
language |
English |
topic |
Arctic fjord Detached macroalgae Lower macroalgal depth distribution Deep sea ddc:570 |
spellingShingle |
Arctic fjord Detached macroalgae Lower macroalgal depth distribution Deep sea ddc:570 Schimani, Katherina Zacher, Katharina Jerosch, Kerstin Pehlke, Hendrik Wiencke, Christian Bartsch, Inka Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) |
topic_facet |
Arctic fjord Detached macroalgae Lower macroalgal depth distribution Deep sea ddc:570 |
description |
In Kongsfjorden (Spitsbergen), we quantified the zonation of visually dominant macroalgal taxa and of detached macroalgae from underwater videos taken in summer 2009 at six transects between 2 and 138 m water depth. For the first time, we provide information on the occurrence of deep water red algae below the kelp forest and of detached macroalgae at water depth > 30 m. The presence and depth distribution of visually dominant red algae were especially pronounced at the outer fjord, decreased with proximity to the glacial front and they were absent at the innermost locations. Deepest crustose coralline red algae and foliose red algae were observed at 72 and 68 m, respectively. Brown algae were distributed along the entire fjord axis at 2–32 m. Green algae were only present at the middle to inner fjord and at areas influenced by physical disturbance at water depths of 2–26 m. With proximity to the inner fjord the depth distribution of all macroalgae became shallower and only extended to 18 m depth at the innermost location. Major recipients of detached macroalgae were sites at the shallower inner fjord and at the middle fjord below the photic zone at depths to 138 m. They may either fuel deep water secondary production, decompose or support carbon sequestration. Univariate and community analyses of macroalgal classes including detached macroalgae across transects and over depths reveal a considerable difference in community structure between the outermost sites, the central part and the inner fjord areas, reflecting the strong environmental gradients along glacial fjords. |
format |
Article in Journal/Newspaper |
author |
Schimani, Katherina Zacher, Katharina Jerosch, Kerstin Pehlke, Hendrik Wiencke, Christian Bartsch, Inka |
author_facet |
Schimani, Katherina Zacher, Katharina Jerosch, Kerstin Pehlke, Hendrik Wiencke, Christian Bartsch, Inka |
author_sort |
Schimani, Katherina |
title |
Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) |
title_short |
Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) |
title_full |
Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) |
title_fullStr |
Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) |
title_full_unstemmed |
Video survey of deep benthic macroalgae and macroalgal detritus along a glacial Arctic fjord: Kongsfjorden (Spitsbergen) |
title_sort |
video survey of deep benthic macroalgae and macroalgal detritus along a glacial arctic fjord: kongsfjorden (spitsbergen) |
publishDate |
2022 |
url |
https://refubium.fu-berlin.de/handle/fub188/36096 https://doi.org/10.17169/refubium-35812 https://doi.org/10.1007/s00300-022-03072-x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Kongsfjord* Kongsfjorden Spitsbergen |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Spitsbergen |
op_relation |
https://refubium.fu-berlin.de/handle/fub188/36096 http://dx.doi.org/10.17169/refubium-35812 doi:10.1007/s00300-022-03072-x |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17169/refubium-35812 https://doi.org/10.1007/s00300-022-03072-x |
_version_ |
1766332619293720576 |