Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica
Marine biogenic skeletal production is the prevalent source of Ca-carbonate in today’s Antarctic seas. Most information, however, derives from the post-mortem legacy of calcifying organisms. Prior imagery and evaluation of Antarctic habitats hosting calcifying benthic organisms are poorly present in...
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Online Access: | http://hdl.handle.net/11577/3396605 https://doi.org/10.3390/min11080833 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/3396605 2024-04-14T08:04:38+00:00 Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica Castellan, Giorgio Angeletti, Lorenzo Canese, Simonepietro Mazzoli, Claudio Montagna, Paolo Schiaparelli, Stefano Taviani, Marco Castellan, Giorgio Angeletti, Lorenzo Canese, Simonepietro Mazzoli, Claudio Montagna, Paolo Schiaparelli, Stefano Taviani, Marco 2021 ELETTRONICO http://hdl.handle.net/11577/3396605 https://doi.org/10.3390/min11080833 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000690649100001 volume:11 issue:8 firstpage:1 lastpage:20 numberofpages:20 journal:MINERALS http://hdl.handle.net/11577/3396605 doi:10.3390/min11080833 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85111603570 Antarctica Ross Sea region MPA remotely operated vehicles carbonate factories benthos carbonate polymorphs info:eu-repo/semantics/article 2021 ftunivpadovairis https://doi.org/10.3390/min11080833 2024-03-21T19:45:28Z Marine biogenic skeletal production is the prevalent source of Ca-carbonate in today’s Antarctic seas. Most information, however, derives from the post-mortem legacy of calcifying organisms. Prior imagery and evaluation of Antarctic habitats hosting calcifying benthic organisms are poorly present in the literature, therefore, a Remotely Operated Vehicle survey was carried out in the Ross Sea region Marine Protected Area during the 2013–2014 austral summer. Two video surveys of the seafloor were conducted along transects between 30 and 120 m (Adelie Cove) and 230 and 260 m (Terra Nova Bay “Canyon”), respectively. We quantified the relative abundance of calcifiers vs non-calcifiers in the macro- and mega-epibenthos. Furthermore, we considered the typology of the carbonate polymorphs represented by the skeletonized organisms. The combined evidence from the two sites reveals the widespread existence of carbonate-mixed factories in the area, with an overwhelming abundance of both low-Mg and (especially) high-Mg calcite calcifiers. Echinoids, serpulids, bryozoans, pectinid bivalves and octocorals prove to be the most abundant animal producers in terms of abundance. The shallower Adelie Cove site also showed evidence of seabed coverage by coralline algae. Our results will help in refining paleoenvironmental analyses since many of the megabenthic calcifiers occur in the Quaternary record of Antarctica. We set a baseline to monitor the future response of these polar biota in a rapidly changing ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Austral Ross Sea Terra Nova Bay Minerals 11 8 833 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Antarctica Ross Sea region MPA remotely operated vehicles carbonate factories benthos carbonate polymorphs |
spellingShingle |
Antarctica Ross Sea region MPA remotely operated vehicles carbonate factories benthos carbonate polymorphs Castellan, Giorgio Angeletti, Lorenzo Canese, Simonepietro Mazzoli, Claudio Montagna, Paolo Schiaparelli, Stefano Taviani, Marco Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica |
topic_facet |
Antarctica Ross Sea region MPA remotely operated vehicles carbonate factories benthos carbonate polymorphs |
description |
Marine biogenic skeletal production is the prevalent source of Ca-carbonate in today’s Antarctic seas. Most information, however, derives from the post-mortem legacy of calcifying organisms. Prior imagery and evaluation of Antarctic habitats hosting calcifying benthic organisms are poorly present in the literature, therefore, a Remotely Operated Vehicle survey was carried out in the Ross Sea region Marine Protected Area during the 2013–2014 austral summer. Two video surveys of the seafloor were conducted along transects between 30 and 120 m (Adelie Cove) and 230 and 260 m (Terra Nova Bay “Canyon”), respectively. We quantified the relative abundance of calcifiers vs non-calcifiers in the macro- and mega-epibenthos. Furthermore, we considered the typology of the carbonate polymorphs represented by the skeletonized organisms. The combined evidence from the two sites reveals the widespread existence of carbonate-mixed factories in the area, with an overwhelming abundance of both low-Mg and (especially) high-Mg calcite calcifiers. Echinoids, serpulids, bryozoans, pectinid bivalves and octocorals prove to be the most abundant animal producers in terms of abundance. The shallower Adelie Cove site also showed evidence of seabed coverage by coralline algae. Our results will help in refining paleoenvironmental analyses since many of the megabenthic calcifiers occur in the Quaternary record of Antarctica. We set a baseline to monitor the future response of these polar biota in a rapidly changing ocean. |
author2 |
Castellan, Giorgio Angeletti, Lorenzo Canese, Simonepietro Mazzoli, Claudio Montagna, Paolo Schiaparelli, Stefano Taviani, Marco |
format |
Article in Journal/Newspaper |
author |
Castellan, Giorgio Angeletti, Lorenzo Canese, Simonepietro Mazzoli, Claudio Montagna, Paolo Schiaparelli, Stefano Taviani, Marco |
author_facet |
Castellan, Giorgio Angeletti, Lorenzo Canese, Simonepietro Mazzoli, Claudio Montagna, Paolo Schiaparelli, Stefano Taviani, Marco |
author_sort |
Castellan, Giorgio |
title |
Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica |
title_short |
Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica |
title_full |
Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica |
title_fullStr |
Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica |
title_full_unstemmed |
Visual Imaging of Benthic Carbonate-Mixed Factories in the Ross Sea Region Marine Protected Area, Antarctica |
title_sort |
visual imaging of benthic carbonate-mixed factories in the ross sea region marine protected area, antarctica |
publishDate |
2021 |
url |
http://hdl.handle.net/11577/3396605 https://doi.org/10.3390/min11080833 |
geographic |
Antarctic Austral Ross Sea Terra Nova Bay |
geographic_facet |
Antarctic Austral Ross Sea Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000690649100001 volume:11 issue:8 firstpage:1 lastpage:20 numberofpages:20 journal:MINERALS http://hdl.handle.net/11577/3396605 doi:10.3390/min11080833 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85111603570 |
op_doi |
https://doi.org/10.3390/min11080833 |
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Minerals |
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11 |
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8 |
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833 |
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