Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway)
Polar coralline red algae (Corallinales, Rhodophyta) that form rhodoliths have received little attention concerning their potential as ecosystem engineers and carbonate factories; although, recent findings revealed that they are much more widespread in polar waters than previously thought. The prese...
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Online Access: | https://biblio.ugent.be/publication/2974912 http://hdl.handle.net/1854/LU-2974912 https://doi.org/10.2216/11-76.1 https://biblio.ugent.be/publication/2974912/file/2974923 |
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ftunivgent:oai:archive.ugent.be:2974912 2023-10-01T03:53:48+02:00 Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) Teichert, Sebastian Woelkerling, William Rüggeberg, Andres Wisshak, Max Piepenburg, Dieter Meyerhöfer, Michael Form, Armin Büdenbender, Jan Freiwald, André 2012 application/pdf https://biblio.ugent.be/publication/2974912 http://hdl.handle.net/1854/LU-2974912 https://doi.org/10.2216/11-76.1 https://biblio.ugent.be/publication/2974912/file/2974923 eng eng https://biblio.ugent.be/publication/2974912 http://hdl.handle.net/1854/LU-2974912 http://dx.doi.org/10.2216/11-76.1 https://biblio.ugent.be/publication/2974912/file/2974923 No license (in copyright) info:eu-repo/semantics/restrictedAccess PHYCOLOGIA ISSN: 0031-8884 Earth and Environmental Sciences Lithothamnion glaciale Nordkappbukta Phymatolithon tenue Polar carbonate factory Rhodolith community Svalbard NORTH-ATLANTIC ARCTIC FJORD RED ALGAE PHYMATOLITHON-CALCAREUM OCEAN ACIDIFICATION CRUSTOSE CORALLINES COMMUNITY STRUCTURE PACIFIC COAST GROWTH-RATES SEA-ICE journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftunivgent https://doi.org/10.2216/11-76.1 2023-09-06T22:32:12Z Polar coralline red algae (Corallinales, Rhodophyta) that form rhodoliths have received little attention concerning their potential as ecosystem engineers and carbonate factories; although, recent findings revealed that they are much more widespread in polar waters than previously thought. The present study deals with the northernmost rhodolith communities currently known, discovered in 2006 at 80°31'N in Nordkappbukta (North Cape Bay) at Nordaustlandet, Svalbard. These perennial coralline algae must be adapted to extreme seasonality in terms of light regime (c. 4 months winter darkness), sea ice coverage, nutrient supply, turbidity of the water column, temperature and salinity. The rhodolith communities and their environment were investigated using multibeam swath bathymetry, CTD measurements, recordings of the photosynthetic active radiation (PAR) and determination of the water chemistry, seabed imaging and targeted sampling by means of the manned submersible JAGO as well as benthic collections with a dredge. The coralline flora was composed mainly of Lithothamnion glaciale, with a lesser amount of Phymatolithon tenue. Based on their distribution and development at different depth levels, a facies model was developed. Rhodoliths occurred between 30 and 51 m, while coralline algae attached to cobbles were present as deep as 78 m. Measurements of the PAR indicated their adaptation to extreme low light levels. Ambient waters were always saturated with reference to calcite and aragonite for the whole area. The rhodolith-associated macrobenthic fauna samples yielded 59 species, only one of which was typically Arctic, and the concomitant appearance of corallines and grazers kept the corallines free from epiphytes and coequally provided feeding grounds for the grazers. Overall, L. glaciale and P. tenue appeared to be well adapted to the extreme environment of the Arctic. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic Nordaustlandet North Atlantic North Cape Ocean acidification Sea ice Svalbard Ghent University Academic Bibliography Arctic Svalbard Svalbard Archipelago Pacific Norway North Cape ENVELOPE(165.700,165.700,-70.650,-70.650) Nordaustlandet ENVELOPE(22.400,22.400,79.800,79.800) Phycologia 51 4 371 390 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences Lithothamnion glaciale Nordkappbukta Phymatolithon tenue Polar carbonate factory Rhodolith community Svalbard NORTH-ATLANTIC ARCTIC FJORD RED ALGAE PHYMATOLITHON-CALCAREUM OCEAN ACIDIFICATION CRUSTOSE CORALLINES COMMUNITY STRUCTURE PACIFIC COAST GROWTH-RATES SEA-ICE |
spellingShingle |
Earth and Environmental Sciences Lithothamnion glaciale Nordkappbukta Phymatolithon tenue Polar carbonate factory Rhodolith community Svalbard NORTH-ATLANTIC ARCTIC FJORD RED ALGAE PHYMATOLITHON-CALCAREUM OCEAN ACIDIFICATION CRUSTOSE CORALLINES COMMUNITY STRUCTURE PACIFIC COAST GROWTH-RATES SEA-ICE Teichert, Sebastian Woelkerling, William Rüggeberg, Andres Wisshak, Max Piepenburg, Dieter Meyerhöfer, Michael Form, Armin Büdenbender, Jan Freiwald, André Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) |
topic_facet |
Earth and Environmental Sciences Lithothamnion glaciale Nordkappbukta Phymatolithon tenue Polar carbonate factory Rhodolith community Svalbard NORTH-ATLANTIC ARCTIC FJORD RED ALGAE PHYMATOLITHON-CALCAREUM OCEAN ACIDIFICATION CRUSTOSE CORALLINES COMMUNITY STRUCTURE PACIFIC COAST GROWTH-RATES SEA-ICE |
description |
Polar coralline red algae (Corallinales, Rhodophyta) that form rhodoliths have received little attention concerning their potential as ecosystem engineers and carbonate factories; although, recent findings revealed that they are much more widespread in polar waters than previously thought. The present study deals with the northernmost rhodolith communities currently known, discovered in 2006 at 80°31'N in Nordkappbukta (North Cape Bay) at Nordaustlandet, Svalbard. These perennial coralline algae must be adapted to extreme seasonality in terms of light regime (c. 4 months winter darkness), sea ice coverage, nutrient supply, turbidity of the water column, temperature and salinity. The rhodolith communities and their environment were investigated using multibeam swath bathymetry, CTD measurements, recordings of the photosynthetic active radiation (PAR) and determination of the water chemistry, seabed imaging and targeted sampling by means of the manned submersible JAGO as well as benthic collections with a dredge. The coralline flora was composed mainly of Lithothamnion glaciale, with a lesser amount of Phymatolithon tenue. Based on their distribution and development at different depth levels, a facies model was developed. Rhodoliths occurred between 30 and 51 m, while coralline algae attached to cobbles were present as deep as 78 m. Measurements of the PAR indicated their adaptation to extreme low light levels. Ambient waters were always saturated with reference to calcite and aragonite for the whole area. The rhodolith-associated macrobenthic fauna samples yielded 59 species, only one of which was typically Arctic, and the concomitant appearance of corallines and grazers kept the corallines free from epiphytes and coequally provided feeding grounds for the grazers. Overall, L. glaciale and P. tenue appeared to be well adapted to the extreme environment of the Arctic. |
format |
Article in Journal/Newspaper |
author |
Teichert, Sebastian Woelkerling, William Rüggeberg, Andres Wisshak, Max Piepenburg, Dieter Meyerhöfer, Michael Form, Armin Büdenbender, Jan Freiwald, André |
author_facet |
Teichert, Sebastian Woelkerling, William Rüggeberg, Andres Wisshak, Max Piepenburg, Dieter Meyerhöfer, Michael Form, Armin Büdenbender, Jan Freiwald, André |
author_sort |
Teichert, Sebastian |
title |
Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) |
title_short |
Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) |
title_full |
Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) |
title_fullStr |
Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) |
title_full_unstemmed |
Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80°31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway) |
title_sort |
rhodolith beds (corallinales, rhodophyta) and their physical and biological environment at 80°31'n in nordkappbukta (nordaustlandet, svalbard archipelago, norway) |
publishDate |
2012 |
url |
https://biblio.ugent.be/publication/2974912 http://hdl.handle.net/1854/LU-2974912 https://doi.org/10.2216/11-76.1 https://biblio.ugent.be/publication/2974912/file/2974923 |
long_lat |
ENVELOPE(165.700,165.700,-70.650,-70.650) ENVELOPE(22.400,22.400,79.800,79.800) |
geographic |
Arctic Svalbard Svalbard Archipelago Pacific Norway North Cape Nordaustlandet |
geographic_facet |
Arctic Svalbard Svalbard Archipelago Pacific Norway North Cape Nordaustlandet |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Nordaustlandet North Atlantic North Cape Ocean acidification Sea ice Svalbard |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Nordaustlandet North Atlantic North Cape Ocean acidification Sea ice Svalbard |
op_source |
PHYCOLOGIA ISSN: 0031-8884 |
op_relation |
https://biblio.ugent.be/publication/2974912 http://hdl.handle.net/1854/LU-2974912 http://dx.doi.org/10.2216/11-76.1 https://biblio.ugent.be/publication/2974912/file/2974923 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.2216/11-76.1 |
container_title |
Phycologia |
container_volume |
51 |
container_issue |
4 |
container_start_page |
371 |
op_container_end_page |
390 |
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1778520755287359488 |