Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard)
The Arctic Svalbard Archipelago hosts the world’s northernmost cold-water ‘carbonate factories’ thriving here despite of presumably unfavourable environmental conditions and extreme seasonality. Two contrasting sites of intense biogenic carbonate production, the rhodolith beds in Mosselbukta in the...
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2019
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Online Access: | https://doi.org/10.3389/fmars.2019.00667 https://doaj.org/article/9b9e2702bdf84e64ac607569f0868ae3 |
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ftdoajarticles:oai:doaj.org/article:9b9e2702bdf84e64ac607569f0868ae3 2023-05-15T15:16:22+02:00 Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) Max Wisshak Hermann Neumann Andres Rüggeberg Janina V. Büscher Peter Linke Jacek Raddatz 2019-11-01T00:00:00Z https://doi.org/10.3389/fmars.2019.00667 https://doaj.org/article/9b9e2702bdf84e64ac607569f0868ae3 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2019.00667/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00667 https://doaj.org/article/9b9e2702bdf84e64ac607569f0868ae3 Frontiers in Marine Science, Vol 6 (2019) carbonate factories polar environments nutrient regime aqueous carbonate system stable isotopes macrobenthos biodiversity Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2019 ftdoajarticles https://doi.org/10.3389/fmars.2019.00667 2022-12-31T04:13:34Z The Arctic Svalbard Archipelago hosts the world’s northernmost cold-water ‘carbonate factories’ thriving here despite of presumably unfavourable environmental conditions and extreme seasonality. Two contrasting sites of intense biogenic carbonate production, the rhodolith beds in Mosselbukta in the north of the archipelago and the barnacle-mollusc dominated carbonate sediments accumulating in the strong hydrodynamic regime of the Bjørnøy-Banken south of Spitsbergen, were the targets of the RV Maria S. Merian cruise 55 in June 2016. By integrating data from physical oceanography, marine biology, and marine geology, the present contribution characterises the environmental setting and biosedimentary dynamics of these two polar carbonate factories. Repetitive CTD profiling in concert with autonomous temperature/salinity loggers on a long-term settlement platform identified spatiotemporal patterns in the involved Atlantic and Polar water masses, whereas short-term deployments of a lander revealed fluctuations of environmental variables in the rhodolith beds in Mosselbukta and at same depth (46 m) at Bjørnøy-Banken. At both sites, dissolved inorganic nutrients in the water column were found depleted (except for elevated ammonium concentrations) and show an overall increase in concentration and N:P ratios toward deeper waters. This indicates that a recycling system was fuelling primary production after the phytoplankton spring bloom at the time of sampling in June 2016. Accordingly, oxygen levels were found elevated and carbon dioxide concentrations (pCO2) markedly reduced, on average only half the expected equilibrium values. Backed up by seawater stable carbon and oxygen isotope signatures, this is interpreted as an effect of limited air-sea gas exchange during seasonal ice cover in combination with a boost in community photosynthesis during the spring phytoplankton bloom. The observed trends are enhanced by the onset of rhodophyte photosynthesis in the rhodolith beds during the polar day upon retreat of sea-ice. ... Article in Journal/Newspaper Arctic Phytoplankton Sea ice Svalbard Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Svalbard Archipelago Banken ENVELOPE(25.108,25.108,70.963,70.963) Mosselbukta ENVELOPE(15.955,15.955,79.891,79.891) Bjørnøy ENVELOPE(18.167,18.167,69.767,69.767) Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
carbonate factories polar environments nutrient regime aqueous carbonate system stable isotopes macrobenthos biodiversity Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
carbonate factories polar environments nutrient regime aqueous carbonate system stable isotopes macrobenthos biodiversity Science Q General. Including nature conservation geographical distribution QH1-199.5 Max Wisshak Hermann Neumann Andres Rüggeberg Janina V. Büscher Peter Linke Jacek Raddatz Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) |
topic_facet |
carbonate factories polar environments nutrient regime aqueous carbonate system stable isotopes macrobenthos biodiversity Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The Arctic Svalbard Archipelago hosts the world’s northernmost cold-water ‘carbonate factories’ thriving here despite of presumably unfavourable environmental conditions and extreme seasonality. Two contrasting sites of intense biogenic carbonate production, the rhodolith beds in Mosselbukta in the north of the archipelago and the barnacle-mollusc dominated carbonate sediments accumulating in the strong hydrodynamic regime of the Bjørnøy-Banken south of Spitsbergen, were the targets of the RV Maria S. Merian cruise 55 in June 2016. By integrating data from physical oceanography, marine biology, and marine geology, the present contribution characterises the environmental setting and biosedimentary dynamics of these two polar carbonate factories. Repetitive CTD profiling in concert with autonomous temperature/salinity loggers on a long-term settlement platform identified spatiotemporal patterns in the involved Atlantic and Polar water masses, whereas short-term deployments of a lander revealed fluctuations of environmental variables in the rhodolith beds in Mosselbukta and at same depth (46 m) at Bjørnøy-Banken. At both sites, dissolved inorganic nutrients in the water column were found depleted (except for elevated ammonium concentrations) and show an overall increase in concentration and N:P ratios toward deeper waters. This indicates that a recycling system was fuelling primary production after the phytoplankton spring bloom at the time of sampling in June 2016. Accordingly, oxygen levels were found elevated and carbon dioxide concentrations (pCO2) markedly reduced, on average only half the expected equilibrium values. Backed up by seawater stable carbon and oxygen isotope signatures, this is interpreted as an effect of limited air-sea gas exchange during seasonal ice cover in combination with a boost in community photosynthesis during the spring phytoplankton bloom. The observed trends are enhanced by the onset of rhodophyte photosynthesis in the rhodolith beds during the polar day upon retreat of sea-ice. ... |
format |
Article in Journal/Newspaper |
author |
Max Wisshak Hermann Neumann Andres Rüggeberg Janina V. Büscher Peter Linke Jacek Raddatz |
author_facet |
Max Wisshak Hermann Neumann Andres Rüggeberg Janina V. Büscher Peter Linke Jacek Raddatz |
author_sort |
Max Wisshak |
title |
Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) |
title_short |
Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) |
title_full |
Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) |
title_fullStr |
Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) |
title_full_unstemmed |
Epibenthos Dynamics and Environmental Fluctuations in Two Contrasting Polar Carbonate Factories (Mosselbukta and Bjørnøy-Banken, Svalbard) |
title_sort |
epibenthos dynamics and environmental fluctuations in two contrasting polar carbonate factories (mosselbukta and bjørnøy-banken, svalbard) |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmars.2019.00667 https://doaj.org/article/9b9e2702bdf84e64ac607569f0868ae3 |
long_lat |
ENVELOPE(25.108,25.108,70.963,70.963) ENVELOPE(15.955,15.955,79.891,79.891) ENVELOPE(18.167,18.167,69.767,69.767) |
geographic |
Arctic Svalbard Svalbard Archipelago Banken Mosselbukta Bjørnøy |
geographic_facet |
Arctic Svalbard Svalbard Archipelago Banken Mosselbukta Bjørnøy |
genre |
Arctic Phytoplankton Sea ice Svalbard Spitsbergen |
genre_facet |
Arctic Phytoplankton Sea ice Svalbard Spitsbergen |
op_source |
Frontiers in Marine Science, Vol 6 (2019) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2019.00667/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00667 https://doaj.org/article/9b9e2702bdf84e64ac607569f0868ae3 |
op_doi |
https://doi.org/10.3389/fmars.2019.00667 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
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1766346650366771200 |