Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins
Continuous anthropogenic CO2 emissions to the atmosphere and uptake by the oceans will cause a reduction of seawater pH and saturation state (U) of CaCO3 minerals from which marine calcifiers build their shells and skeletons. Sea urchins use the most soluble form of calcium carbonate, high-magnesium...
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Online Access: | http://hdl.handle.net/11567/654779 https://doi.org/10.1016/j.marenvres.2013.08.005 |
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ftunivgenova:oai:iris.unige.it:11567/654779 2024-04-14T08:17:46+00:00 Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins ASNAGHI, VALENTINA MANGIALAJO, LUISA Gattuso J. P. Francour P. PRIVITERA, DAVIDE CHIANTORE, MARIACHIARA Asnaghi, Valentina Mangialajo, Luisa Gattuso, J. P. Francour, P. Privitera, Davide Chiantore, Mariachiara 2014 STAMPA http://hdl.handle.net/11567/654779 https://doi.org/10.1016/j.marenvres.2013.08.005 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000330919000011 volume:93 firstpage:78 lastpage:84 journal:MARINE ENVIRONMENTAL RESEARCH http://hdl.handle.net/11567/654779 doi:10.1016/j.marenvres.2013.08.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84892513213 info:eu-repo/semantics/article 2014 ftunivgenova https://doi.org/10.1016/j.marenvres.2013.08.005 2024-03-21T02:23:53Z Continuous anthropogenic CO2 emissions to the atmosphere and uptake by the oceans will cause a reduction of seawater pH and saturation state (U) of CaCO3 minerals from which marine calcifiers build their shells and skeletons. Sea urchins use the most soluble form of calcium carbonate, high-magnesium calcite, to build their skeleton, spines and grazing apparatus. In order to highlight the effects of increased pCO2 on the test thickness and carbonate elemental composition of juvenile sea urchins and potential differences in their responses linked to the diet, we performed a laboratory experiment on juvenile Paracentrotus lividus, grazing on calcifying (Corallina elongata) and non-calcifying (Cystoseira amentacea, Dictyota dichotoma) macroalgae, under different pH (corresponding to pCO2 values of 390, 550, 750 and 1000 matm). Results highlighted the importance of the diet in determining sea urchin size irrespectively of the pCO2 level, and the relevance of macroalgal diet in modulating urchin Mg/Ca ratio. The present study provides relevant clues both in terms of the mechanism of mineral incorporation and in terms of bottom-up processes (algal diet) affecting top-down ones (fish predation) in rocky subtidal communities. Article in Journal/Newspaper Ocean acidification Università degli Studi di Genova: CINECA IRIS Marine Environmental Research 93 78 84 |
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Università degli Studi di Genova: CINECA IRIS |
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ftunivgenova |
language |
English |
description |
Continuous anthropogenic CO2 emissions to the atmosphere and uptake by the oceans will cause a reduction of seawater pH and saturation state (U) of CaCO3 minerals from which marine calcifiers build their shells and skeletons. Sea urchins use the most soluble form of calcium carbonate, high-magnesium calcite, to build their skeleton, spines and grazing apparatus. In order to highlight the effects of increased pCO2 on the test thickness and carbonate elemental composition of juvenile sea urchins and potential differences in their responses linked to the diet, we performed a laboratory experiment on juvenile Paracentrotus lividus, grazing on calcifying (Corallina elongata) and non-calcifying (Cystoseira amentacea, Dictyota dichotoma) macroalgae, under different pH (corresponding to pCO2 values of 390, 550, 750 and 1000 matm). Results highlighted the importance of the diet in determining sea urchin size irrespectively of the pCO2 level, and the relevance of macroalgal diet in modulating urchin Mg/Ca ratio. The present study provides relevant clues both in terms of the mechanism of mineral incorporation and in terms of bottom-up processes (algal diet) affecting top-down ones (fish predation) in rocky subtidal communities. |
author2 |
Asnaghi, Valentina Mangialajo, Luisa Gattuso, J. P. Francour, P. Privitera, Davide Chiantore, Mariachiara |
format |
Article in Journal/Newspaper |
author |
ASNAGHI, VALENTINA MANGIALAJO, LUISA Gattuso J. P. Francour P. PRIVITERA, DAVIDE CHIANTORE, MARIACHIARA |
spellingShingle |
ASNAGHI, VALENTINA MANGIALAJO, LUISA Gattuso J. P. Francour P. PRIVITERA, DAVIDE CHIANTORE, MARIACHIARA Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
author_facet |
ASNAGHI, VALENTINA MANGIALAJO, LUISA Gattuso J. P. Francour P. PRIVITERA, DAVIDE CHIANTORE, MARIACHIARA |
author_sort |
ASNAGHI, VALENTINA |
title |
Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
title_short |
Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
title_full |
Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
title_fullStr |
Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
title_full_unstemmed |
Effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
title_sort |
effects of ocean acidification and diet on thickness and carbonate elemental composition of the test of juvenile sea urchins |
publishDate |
2014 |
url |
http://hdl.handle.net/11567/654779 https://doi.org/10.1016/j.marenvres.2013.08.005 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000330919000011 volume:93 firstpage:78 lastpage:84 journal:MARINE ENVIRONMENTAL RESEARCH http://hdl.handle.net/11567/654779 doi:10.1016/j.marenvres.2013.08.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84892513213 |
op_doi |
https://doi.org/10.1016/j.marenvres.2013.08.005 |
container_title |
Marine Environmental Research |
container_volume |
93 |
container_start_page |
78 |
op_container_end_page |
84 |
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1796317044158758912 |