Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2
Ocean acidification reduces the concentration of carbonate ions and increases those of bicarbonate ions in seawater compared with the present oceanic conditions. This altered composition of inorganic carbon species may, by interacting with ultraviolet radiation (UVR), affect the physiology of macroa...
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2013
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Online Access: | https://oceanrep.geomar.de/id/eprint/20951/ https://oceanrep.geomar.de/id/eprint/20951/1/Yildiz_etal_2013_BotMar-1.pdf https://doi.org/10.1515/bot-2012-0216 |
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ftoceanrep:oai:oceanrep.geomar.de:20951 2023-05-15T17:49:36+02:00 Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 Yildiz, Gamze Hofmann, Laurie C. Bischof, Kai Dere, Sükran 2013 text https://oceanrep.geomar.de/id/eprint/20951/ https://oceanrep.geomar.de/id/eprint/20951/1/Yildiz_etal_2013_BotMar-1.pdf https://doi.org/10.1515/bot-2012-0216 en eng de Gruyter https://oceanrep.geomar.de/id/eprint/20951/1/Yildiz_etal_2013_BotMar-1.pdf Yildiz, G., Hofmann, L. C., Bischof, K. and Dere, S. (2013) Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2. Botanica Marina, 56 (2). pp. 161-168. DOI 10.1515/bot-2012-0216 <https://doi.org/10.1515/bot-2012-0216>. doi:10.1515/bot-2012-0216 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.1515/bot-2012-0216 2023-04-07T15:08:47Z Ocean acidification reduces the concentration of carbonate ions and increases those of bicarbonate ions in seawater compared with the present oceanic conditions. This altered composition of inorganic carbon species may, by interacting with ultraviolet radiation (UVR), affect the physiology of macroalgal species. However, very little is known about how calcareous algae respond to UVR and ocean acidification. Therefore, we conducted an experiment to determine the effects of UVR and ocean acidification on the calcified rhodophyte Corallina officinalis using CO2-enriched cultures with and without UVR exposure. Low pH increased the relative electron transport rates (rETR) but decreased the CaCO3 content and had a miniscule effect on growth. However, UVA (4.25 W m-2) and a moderate level of UVB (0.5 W m-2) increased the rETR and growth rates in C. officinalis, and there was a significant interactive effect of pH and UVR on UVR-absorbing compound concentrations. Thus, at low irradiance, pH and UVR interact in a way that affects the multiple physiological responses of C. officinalis differently. In particular, changes in the skeletal content induced by low pH may affect how C. officinalis absorbs and uses light. Therefore, the light quality used in ocean acidification experiments will affect the predictions of how calcified macroalgae will respond to elevated CO2. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Botanica Marina 56 2 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Ocean acidification reduces the concentration of carbonate ions and increases those of bicarbonate ions in seawater compared with the present oceanic conditions. This altered composition of inorganic carbon species may, by interacting with ultraviolet radiation (UVR), affect the physiology of macroalgal species. However, very little is known about how calcareous algae respond to UVR and ocean acidification. Therefore, we conducted an experiment to determine the effects of UVR and ocean acidification on the calcified rhodophyte Corallina officinalis using CO2-enriched cultures with and without UVR exposure. Low pH increased the relative electron transport rates (rETR) but decreased the CaCO3 content and had a miniscule effect on growth. However, UVA (4.25 W m-2) and a moderate level of UVB (0.5 W m-2) increased the rETR and growth rates in C. officinalis, and there was a significant interactive effect of pH and UVR on UVR-absorbing compound concentrations. Thus, at low irradiance, pH and UVR interact in a way that affects the multiple physiological responses of C. officinalis differently. In particular, changes in the skeletal content induced by low pH may affect how C. officinalis absorbs and uses light. Therefore, the light quality used in ocean acidification experiments will affect the predictions of how calcified macroalgae will respond to elevated CO2. |
format |
Article in Journal/Newspaper |
author |
Yildiz, Gamze Hofmann, Laurie C. Bischof, Kai Dere, Sükran |
spellingShingle |
Yildiz, Gamze Hofmann, Laurie C. Bischof, Kai Dere, Sükran Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 |
author_facet |
Yildiz, Gamze Hofmann, Laurie C. Bischof, Kai Dere, Sükran |
author_sort |
Yildiz, Gamze |
title |
Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 |
title_short |
Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 |
title_full |
Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 |
title_fullStr |
Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 |
title_full_unstemmed |
Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2 |
title_sort |
ultraviolet radiation modulates the physiological responses of the calcified rhodophyte corallina officinalis to elevated co2 |
publisher |
de Gruyter |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/20951/ https://oceanrep.geomar.de/id/eprint/20951/1/Yildiz_etal_2013_BotMar-1.pdf https://doi.org/10.1515/bot-2012-0216 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/20951/1/Yildiz_etal_2013_BotMar-1.pdf Yildiz, G., Hofmann, L. C., Bischof, K. and Dere, S. (2013) Ultraviolet radiation modulates the physiological responses of the calcified rhodophyte Corallina officinalis to elevated CO2. Botanica Marina, 56 (2). pp. 161-168. DOI 10.1515/bot-2012-0216 <https://doi.org/10.1515/bot-2012-0216>. doi:10.1515/bot-2012-0216 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1515/bot-2012-0216 |
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Botanica Marina |
container_volume |
56 |
container_issue |
2 |
_version_ |
1766155995704197120 |