Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures
Coralline algae are considered among the most sensitive species to near future ocean acidification. We tested the effects of elevated p CO 2 on the metabolism of the free‐living coralline alga L ithothamnion corallioides (“maerl”) and the interactions with changes in temperature. Specimens were coll...
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Online Access: | http://dx.doi.org/10.1111/jpy.12085 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.12085 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.12085 |
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crwiley:10.1111/jpy.12085 2024-10-13T14:10:03+00:00 Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures Noisette, Fanny Duong, Gwendoline Six, Christophe Davoult, Dominique Martin, Sophie Hurd, C. 2013 http://dx.doi.org/10.1111/jpy.12085 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.12085 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.12085 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 49, issue 4, page 746-757 ISSN 0022-3646 1529-8817 journal-article 2013 crwiley https://doi.org/10.1111/jpy.12085 2024-09-23T04:36:48Z Coralline algae are considered among the most sensitive species to near future ocean acidification. We tested the effects of elevated p CO 2 on the metabolism of the free‐living coralline alga L ithothamnion corallioides (“maerl”) and the interactions with changes in temperature. Specimens were collected in N orth B rittany ( F rance) and grown for 3 months at p CO 2 of 380 (ambient p CO 2 ), 550, 750, and 1000 μatm (elevated p CO 2 ) and at successive temperatures of 10°C (ambient temperature in winter), 16°C (ambient temperature in summer), and 19°C (ambient temperature in summer +3°C). At each temperature, gross primary production, respiration (oxygen flux), and calcification (alkalinity flux) rates were assessed in the light and dark. Pigments were determined by HPLC . Chl a , carotene, and zeaxanthin were the three major pigments found in L . corallioides thalli. Elevated p CO 2 did not affect pigment content while temperature slightly decreased zeaxanthin and carotene content at 10°C. Gross production was not affected by temperature but was significantly affected by p CO 2 with an increase between 380 and 550 μatm. Light, dark, and diel (24 h) calcification rates strongly decreased with increasing p CO 2 regardless of the temperature. Although elevated p CO 2 only slightly affected gross production in L . corallioides , diel net calcification was reduced by up to 80% under the 1,000 μatm treatment. Our findings suggested that near future levels of CO 2 will have profound consequences for carbon and carbonate budgets in rhodolith beds and for the sustainability of these habitats. Article in Journal/Newspaper Ocean acidification Wiley Online Library Journal of Phycology 49 4 746 757 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Coralline algae are considered among the most sensitive species to near future ocean acidification. We tested the effects of elevated p CO 2 on the metabolism of the free‐living coralline alga L ithothamnion corallioides (“maerl”) and the interactions with changes in temperature. Specimens were collected in N orth B rittany ( F rance) and grown for 3 months at p CO 2 of 380 (ambient p CO 2 ), 550, 750, and 1000 μatm (elevated p CO 2 ) and at successive temperatures of 10°C (ambient temperature in winter), 16°C (ambient temperature in summer), and 19°C (ambient temperature in summer +3°C). At each temperature, gross primary production, respiration (oxygen flux), and calcification (alkalinity flux) rates were assessed in the light and dark. Pigments were determined by HPLC . Chl a , carotene, and zeaxanthin were the three major pigments found in L . corallioides thalli. Elevated p CO 2 did not affect pigment content while temperature slightly decreased zeaxanthin and carotene content at 10°C. Gross production was not affected by temperature but was significantly affected by p CO 2 with an increase between 380 and 550 μatm. Light, dark, and diel (24 h) calcification rates strongly decreased with increasing p CO 2 regardless of the temperature. Although elevated p CO 2 only slightly affected gross production in L . corallioides , diel net calcification was reduced by up to 80% under the 1,000 μatm treatment. Our findings suggested that near future levels of CO 2 will have profound consequences for carbon and carbonate budgets in rhodolith beds and for the sustainability of these habitats. |
author2 |
Hurd, C. |
format |
Article in Journal/Newspaper |
author |
Noisette, Fanny Duong, Gwendoline Six, Christophe Davoult, Dominique Martin, Sophie |
spellingShingle |
Noisette, Fanny Duong, Gwendoline Six, Christophe Davoult, Dominique Martin, Sophie Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures |
author_facet |
Noisette, Fanny Duong, Gwendoline Six, Christophe Davoult, Dominique Martin, Sophie |
author_sort |
Noisette, Fanny |
title |
Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures |
title_short |
Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures |
title_full |
Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures |
title_fullStr |
Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures |
title_full_unstemmed |
Effects of elevated p CO 2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures |
title_sort |
effects of elevated p co 2 on the metabolism of a temperate rhodolith lithothamnion corallioides grown under different temperatures |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/jpy.12085 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.12085 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.12085 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Journal of Phycology volume 49, issue 4, page 746-757 ISSN 0022-3646 1529-8817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jpy.12085 |
container_title |
Journal of Phycology |
container_volume |
49 |
container_issue |
4 |
container_start_page |
746 |
op_container_end_page |
757 |
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1812817181551886336 |