Antarctic echinoids and climate change: a major impact on brooding forms

Ocean acidification (OA) and the accompanying changes to carbonate concentrations are predicted to have especially negative impacts in the Southern Ocean where, as a result of colder temperatures, there will be shallowing of both the aragonite (ASH) and calcite saturation horizons (CSH). Echinoids a...

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Main Authors: Mary A. Sewell, Gretchen E. Hofmannw
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2011
Subjects:
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.8293
http://hofmannlab.msi.ucsb.edu/publications/Sewell-Hofmann_2011_AntarcticEchnoidsAndClimateChange_AMajorImpactOnTheBroodingForms.pdf
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spelling ftciteseerx:oai:CiteSeerX.psu:10.1.1.378.8293 2023-05-15T13:36:48+02:00 Antarctic echinoids and climate change: a major impact on brooding forms Mary A. Sewell Gretchen E. Hofmannw The Pennsylvania State University CiteSeerX Archives 2011 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.8293 http://hofmannlab.msi.ucsb.edu/publications/Sewell-Hofmann_2011_AntarcticEchnoidsAndClimateChange_AMajorImpactOnTheBroodingForms.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.8293 http://hofmannlab.msi.ucsb.edu/publications/Sewell-Hofmann_2011_AntarcticEchnoidsAndClimateChange_AMajorImpactOnTheBroodingForms.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hofmannlab.msi.ucsb.edu/publications/Sewell-Hofmann_2011_AntarcticEchnoidsAndClimateChange_AMajorImpactOnTheBroodingForms.pdf Antarctic brooding climate change echinoid ocean acidification text 2011 ftciteseerx 2016-09-18T00:14:36Z Ocean acidification (OA) and the accompanying changes to carbonate concentrations are predicted to have especially negative impacts in the Southern Ocean where, as a result of colder temperatures, there will be shallowing of both the aragonite (ASH) and calcite saturation horizons (CSH). Echinoids are a dominant group of the Antarctic macrofauna which, because of their high-Mg calcite skeleton, are particularly susceptible to changes in the ASH. Using published information on the bathymetric distributions of Antarctic echinoids, we show that the majority of heavily calcified echinoids have their lower bathymetric limit above a depth of ca. 3000 m, approximately the current depth of the CSH. Echinoids whose depth range extends below 3000 m generally have thin, weakly calcified tests and include species from the Order Holasteroida, and the Families Cidaridae and Schizasteridae. Examination of the reproductive mode of Antarctic echinoids shows that brooding, where calcification of the young occurs in the same CaCO3 environment as the mother, is primarily found at a depth above 3000 m. The predicted shallowing of the ASH and CSH under OA conditions is likely to negatively impact growth and reproduction of heavily calcified brooders in the Family Cidaridae, which may result in changes to bathymetric ranges, local population extinction, and associated losses in macrofaunal biodiversity. As with other calcified deep sea invertebrates, echinoids may be particularly vulnerable to the impacts of increased CO2 and OA in the Southern Ocean. Text Antarc* Antarctic Ocean acidification Southern Ocean Unknown Antarctic Southern Ocean The Antarctic
institution Open Polar
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op_collection_id ftciteseerx
language English
topic Antarctic
brooding
climate change
echinoid
ocean acidification
spellingShingle Antarctic
brooding
climate change
echinoid
ocean acidification
Mary A. Sewell
Gretchen E. Hofmannw
Antarctic echinoids and climate change: a major impact on brooding forms
topic_facet Antarctic
brooding
climate change
echinoid
ocean acidification
description Ocean acidification (OA) and the accompanying changes to carbonate concentrations are predicted to have especially negative impacts in the Southern Ocean where, as a result of colder temperatures, there will be shallowing of both the aragonite (ASH) and calcite saturation horizons (CSH). Echinoids are a dominant group of the Antarctic macrofauna which, because of their high-Mg calcite skeleton, are particularly susceptible to changes in the ASH. Using published information on the bathymetric distributions of Antarctic echinoids, we show that the majority of heavily calcified echinoids have their lower bathymetric limit above a depth of ca. 3000 m, approximately the current depth of the CSH. Echinoids whose depth range extends below 3000 m generally have thin, weakly calcified tests and include species from the Order Holasteroida, and the Families Cidaridae and Schizasteridae. Examination of the reproductive mode of Antarctic echinoids shows that brooding, where calcification of the young occurs in the same CaCO3 environment as the mother, is primarily found at a depth above 3000 m. The predicted shallowing of the ASH and CSH under OA conditions is likely to negatively impact growth and reproduction of heavily calcified brooders in the Family Cidaridae, which may result in changes to bathymetric ranges, local population extinction, and associated losses in macrofaunal biodiversity. As with other calcified deep sea invertebrates, echinoids may be particularly vulnerable to the impacts of increased CO2 and OA in the Southern Ocean.
author2 The Pennsylvania State University CiteSeerX Archives
format Text
author Mary A. Sewell
Gretchen E. Hofmannw
author_facet Mary A. Sewell
Gretchen E. Hofmannw
author_sort Mary A. Sewell
title Antarctic echinoids and climate change: a major impact on brooding forms
title_short Antarctic echinoids and climate change: a major impact on brooding forms
title_full Antarctic echinoids and climate change: a major impact on brooding forms
title_fullStr Antarctic echinoids and climate change: a major impact on brooding forms
title_full_unstemmed Antarctic echinoids and climate change: a major impact on brooding forms
title_sort antarctic echinoids and climate change: a major impact on brooding forms
publishDate 2011
url http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.8293
http://hofmannlab.msi.ucsb.edu/publications/Sewell-Hofmann_2011_AntarcticEchnoidsAndClimateChange_AMajorImpactOnTheBroodingForms.pdf
geographic Antarctic
Southern Ocean
The Antarctic
geographic_facet Antarctic
Southern Ocean
The Antarctic
genre Antarc*
Antarctic
Ocean acidification
Southern Ocean
genre_facet Antarc*
Antarctic
Ocean acidification
Southern Ocean
op_source http://hofmannlab.msi.ucsb.edu/publications/Sewell-Hofmann_2011_AntarcticEchnoidsAndClimateChange_AMajorImpactOnTheBroodingForms.pdf
op_relation http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.8293
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