Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep
Ocean acidification is leading to changes in the oceanic carbonate system. As a result, calcium carbonate saturation horizon is shallowing, especially at high latitudes. Biogenic high magnesium-calcites could be particularly vulnerable, since their solubility is either similar or greater than that o...
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ftvliz:oai:oma.vliz.be:238369 2023-05-15T13:54:14+02:00 Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep Catarino, A.I. Guibourt, V. Moureaux, C. De Ridder, C. Compère, P. Dubois, P. 2013 application/pdf https://www.vliz.be/imisdocs/publications/257895.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000326954200024 https://www.vliz.be/imisdocs/publications/257895.pdf info:eu-repo/semantics/openAccess iCah.+Biol.+Mar.+544i+649-655 Ctenocidaris speciosa info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftvliz 2022-05-01T10:15:24Z Ocean acidification is leading to changes in the oceanic carbonate system. As a result, calcium carbonate saturation horizon is shallowing, especially at high latitudes. Biogenic high magnesium-calcites could be particularly vulnerable, since their solubility is either similar or greater than that of aragonite. Cidaroid urchins have magnesium-calcite spines covered by a polycrystalline cortex which becomes exposed to seawater when mature (not covered by an epidermis). However, deep species live at low calcium carbonate saturation states, especially at high latitudes. We describe here the morphology and the magnesium content of Ctenocidaris speciosa spines collected at different depths from the Weddell Sea (Antarctica) and relate the features with seawater calcium carbonate saturation. We observed that the spines cortex of C. speciosa presented a thicker inner cortex layer and a lower [Mg 2+ ] below the aragonite saturation horizon. We suggest that the cortex of cidaroid spines is able to resist to low calcium carbonate saturation state. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ocean acidification Weddell Sea Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic Weddell Weddell Sea |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
topic |
Ctenocidaris speciosa |
spellingShingle |
Ctenocidaris speciosa Catarino, A.I. Guibourt, V. Moureaux, C. De Ridder, C. Compère, P. Dubois, P. Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
topic_facet |
Ctenocidaris speciosa |
description |
Ocean acidification is leading to changes in the oceanic carbonate system. As a result, calcium carbonate saturation horizon is shallowing, especially at high latitudes. Biogenic high magnesium-calcites could be particularly vulnerable, since their solubility is either similar or greater than that of aragonite. Cidaroid urchins have magnesium-calcite spines covered by a polycrystalline cortex which becomes exposed to seawater when mature (not covered by an epidermis). However, deep species live at low calcium carbonate saturation states, especially at high latitudes. We describe here the morphology and the magnesium content of Ctenocidaris speciosa spines collected at different depths from the Weddell Sea (Antarctica) and relate the features with seawater calcium carbonate saturation. We observed that the spines cortex of C. speciosa presented a thicker inner cortex layer and a lower [Mg 2+ ] below the aragonite saturation horizon. We suggest that the cortex of cidaroid spines is able to resist to low calcium carbonate saturation state. |
format |
Article in Journal/Newspaper |
author |
Catarino, A.I. Guibourt, V. Moureaux, C. De Ridder, C. Compère, P. Dubois, P. |
author_facet |
Catarino, A.I. Guibourt, V. Moureaux, C. De Ridder, C. Compère, P. Dubois, P. |
author_sort |
Catarino, A.I. |
title |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_short |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_full |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_fullStr |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_full_unstemmed |
Antarctic urchin Ctenocidaris speciosa spines: lessons from the deep |
title_sort |
antarctic urchin ctenocidaris speciosa spines: lessons from the deep |
publishDate |
2013 |
url |
https://www.vliz.be/imisdocs/publications/257895.pdf |
geographic |
Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Ocean acidification Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Ocean acidification Weddell Sea |
op_source |
iCah.+Biol.+Mar.+544i+649-655 |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000326954200024 https://www.vliz.be/imisdocs/publications/257895.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766259919696166912 |