Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic
Rhodoliths are nodules of non-geniculate coralline algae that occur in shallow waters (<150 m depth) subjected to episodic disturbance. Rhodolith beds stand with kelp beds, seagrass meadows, and coralline algal reefs as one of the world's four largest macrophyte-dominated benthic communities...
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-617 https://doi.org/10.1371/journal.pone.0035171 |
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ftncar:oai:drupal-site.org:articles_11869 2023-09-05T13:21:38+02:00 Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic Amado-Filho, Gilberto (author) Moura, Rodrigo (author) Bastos, Alex (author) Salgado, Leonardo (author) Sumida, Paulo (author) Guth, Arthur (author) Francini-Filho, Ronaldo (author) Pereira-Filho, Guilherme (author) Abrantes, Douglas (author) Brasileiro, Poliana (author) Bahia, Ricardo (author) Leal, Rachel (author) Kaufman, Les (author) Kleypas, Joanie (author) Farina, Marcos (author) Thompson, Fabiano (author) 2012-04-20 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-617 https://doi.org/10.1371/journal.pone.0035171 en eng Public Library of Science PLoS One http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-617 doi:10.1371/journal.pone.0035171 ark:/85065/d7jd4xg6 Copyright 2012 Public Library of Science. Benthic surveys Abrolhos Shelf Text article 2012 ftncar https://doi.org/10.1371/journal.pone.0035171 2023-08-14T18:40:26Z Rhodoliths are nodules of non-geniculate coralline algae that occur in shallow waters (<150 m depth) subjected to episodic disturbance. Rhodolith beds stand with kelp beds, seagrass meadows, and coralline algal reefs as one of the world's four largest macrophyte-dominated benthic communities. Geographic distribution of rhodolith beds is discontinuous, with large concentrations off Japan, Australia and the Gulf of California, as well as in the Mediterranean, North Atlantic, eastern Caribbean and Brazil. Although there are major gaps in terms of seabed habitat mapping, the largest rhodolith beds are purported to occur off Brazil, where these communities are recorded across a wide latitudinal range (2°N - 27°S). To quantify their extent, we carried out an inter-reefal seabed habitat survey on the Abrolhos Shelf (16°50' - 19°45'S) off eastern Brazil, and confirmed the most expansive and contiguous rhodolith bed in the world, covering about 20,900 km². Distribution, extent, composition and structure of this bed were assessed with side scan sonar, remotely operated vehicles, and SCUBA. The mean rate of CaCO₃ production was estimated from in situ growth assays at 1.07 kg m⁻² yr⁻¹, with a total production rate of 0.025 Gt yr⁻¹, comparable to those of the world's largest biogenic CaCO₃ deposits. These gigantic rhodolith beds, of areal extent equivalent to the Great Barrier Reef, Australia, are a critical, yet poorly understood component of the tropical South Atlantic Ocean. Based on the relatively high vulnerability of coralline algae to ocean acidification, these beds are likely to experience a profound restructuring in the coming decades. Article in Journal/Newspaper North Atlantic Ocean acidification South Atlantic Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) PLoS ONE 7 4 e35171 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Benthic surveys Abrolhos Shelf |
spellingShingle |
Benthic surveys Abrolhos Shelf Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic |
topic_facet |
Benthic surveys Abrolhos Shelf |
description |
Rhodoliths are nodules of non-geniculate coralline algae that occur in shallow waters (<150 m depth) subjected to episodic disturbance. Rhodolith beds stand with kelp beds, seagrass meadows, and coralline algal reefs as one of the world's four largest macrophyte-dominated benthic communities. Geographic distribution of rhodolith beds is discontinuous, with large concentrations off Japan, Australia and the Gulf of California, as well as in the Mediterranean, North Atlantic, eastern Caribbean and Brazil. Although there are major gaps in terms of seabed habitat mapping, the largest rhodolith beds are purported to occur off Brazil, where these communities are recorded across a wide latitudinal range (2°N - 27°S). To quantify their extent, we carried out an inter-reefal seabed habitat survey on the Abrolhos Shelf (16°50' - 19°45'S) off eastern Brazil, and confirmed the most expansive and contiguous rhodolith bed in the world, covering about 20,900 km². Distribution, extent, composition and structure of this bed were assessed with side scan sonar, remotely operated vehicles, and SCUBA. The mean rate of CaCO₃ production was estimated from in situ growth assays at 1.07 kg m⁻² yr⁻¹, with a total production rate of 0.025 Gt yr⁻¹, comparable to those of the world's largest biogenic CaCO₃ deposits. These gigantic rhodolith beds, of areal extent equivalent to the Great Barrier Reef, Australia, are a critical, yet poorly understood component of the tropical South Atlantic Ocean. Based on the relatively high vulnerability of coralline algae to ocean acidification, these beds are likely to experience a profound restructuring in the coming decades. |
author2 |
Amado-Filho, Gilberto (author) Moura, Rodrigo (author) Bastos, Alex (author) Salgado, Leonardo (author) Sumida, Paulo (author) Guth, Arthur (author) Francini-Filho, Ronaldo (author) Pereira-Filho, Guilherme (author) Abrantes, Douglas (author) Brasileiro, Poliana (author) Bahia, Ricardo (author) Leal, Rachel (author) Kaufman, Les (author) Kleypas, Joanie (author) Farina, Marcos (author) Thompson, Fabiano (author) |
format |
Article in Journal/Newspaper |
title |
Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic |
title_short |
Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic |
title_full |
Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic |
title_fullStr |
Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic |
title_full_unstemmed |
Rhodolith beds are major CaCO₃ bio-factories in the tropical south west Atlantic |
title_sort |
rhodolith beds are major caco₃ bio-factories in the tropical south west atlantic |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-617 https://doi.org/10.1371/journal.pone.0035171 |
genre |
North Atlantic Ocean acidification South Atlantic Ocean |
genre_facet |
North Atlantic Ocean acidification South Atlantic Ocean |
op_relation |
PLoS One http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-617 doi:10.1371/journal.pone.0035171 ark:/85065/d7jd4xg6 |
op_rights |
Copyright 2012 Public Library of Science. |
op_doi |
https://doi.org/10.1371/journal.pone.0035171 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
4 |
container_start_page |
e35171 |
_version_ |
1776202235782365184 |