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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2017
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| Materias: | |
| Acceso en línea: | https://doi.org/10.1594/PANGAEA.875262 |
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| _version_ | 1867170998745300992 |
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| author | Cornwall, Christopher Edward Comeau, Steeve McCulloch, Malcolm T |
| author_facet | Cornwall, Christopher Edward Comeau, Steeve McCulloch, Malcolm T |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Coralline algae provide important ecosystem services but are susceptible to the impacts of ocean acidification. However, the mechanisms are uncertain, and the magnitude is species specific. Here, we assess whether species-specific responses to ocean acidification of coralline algae are related to differences in pH at the site of calcification within the calcifying fluid/medium (pHcf) using delta 11B as a proxy. Declines in delta 11B for all three species are consistent with shifts in delta 11B expected if B(OH)4- was incorporated during precipitation. In particular, the delta11B ratio in Amphiroa anceps was too low to allow for reasonable pHcf values if B(OH)3 rather than B(OH)4- was directly incorporated from the calcifying fluid. This points towards delta 11B being a reliable proxy for pHcf for coralline algal calcite and that if B(OH)3 is present in detectable proportions, it can be attributed to secondary postincorporation transformation of B(OH)4-. We thus show that pHcf is elevated during calcification and that the extent is species specific. The net calcification of two species of coralline algae (Sporolithon durum, and Amphiroa anceps) declined under elevated CO2, as did their pHcf. Neogoniolithon sp. had the highest pHcf, and most constant calcification rates, with the decrease in pHcf being 1/4 that of seawater pH in the treatments, demonstrating a control of coralline algae on carbonate chemistry at their site of calcification. The discovery that coralline algae upregulate pHcf under ocean acidification is physiologically important and should be included in future models involving calcification. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_875262 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and pH at the site of calcification within the calcifying fluid/medium of coralline algae in laboratory experiment Cornwall, Christopher Edward Comeau, Steeve McCulloch, Malcolm T Acid-base regulation; Alkalinity, total; Alkalinity, total, standard error; Amphiroa anceps; Aragonite saturation state; Benthos; Bicarbonate ion; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcifying fluid, pH; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Difference; EXP; Experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Identification; Indian Ocean; Laboratory experiment; Macroalgae; Neogoniolithon sp.; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH, standard error; pH, total scale; Plantae; Registration number of species; Rhodophyta; Rottnest_Island; Salinity; Single species; Species; Sporolithon durum; Temperate; Temperature, water; Treatment; Type; Uniform resource locator/link to reference; δ11B Coralline algae provide important ecosystem services but are susceptible to the impacts of ocean acidification. However, the mechanisms are uncertain, and the magnitude is species specific. Here, we assess whether species-specific responses to ocean acidification of coralline algae are related to differences in pH at the site of calcification within the calcifying fluid/medium (pHcf) using delta 11B as a proxy. Declines in delta 11B for all three species are consistent with shifts in delta 11B expected if B(OH)4- was incorporated during precipitation. In particular, the delta11B ratio in Amphiroa anceps was too low to allow for reasonable pHcf values if B(OH)3 rather than B(OH)4- was directly incorporated from the calcifying fluid. This points towards delta 11B being a reliable proxy for pHcf for coralline algal calcite and that if B(OH)3 is present in detectable proportions, it can be attributed to secondary postincorporation transformation of B(OH)4-. We thus show that pHcf is elevated during calcification and that the extent is species specific. The net calcification of two species of coralline algae (Sporolithon durum, and Amphiroa anceps) declined under elevated CO2, as did their pHcf. Neogoniolithon sp. had the highest pHcf, and most constant calcification rates, with the decrease in pHcf being 1/4 that of seawater pH in the treatments, demonstrating a control of coralline algae on carbonate chemistry at their site of calcification. The discovery that coralline algae upregulate pHcf under ocean acidification is physiologically important and should be included in future models involving calcification. |
| title | Seawater carbonate chemistry and pH at the site of calcification within the calcifying fluid/medium of coralline algae in laboratory experiment |
| topic | Acid-base regulation; Alkalinity, total; Alkalinity, total, standard error; Amphiroa anceps; Aragonite saturation state; Benthos; Bicarbonate ion; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcifying fluid, pH; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Difference; EXP; Experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Identification; Indian Ocean; Laboratory experiment; Macroalgae; Neogoniolithon sp.; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH, standard error; pH, total scale; Plantae; Registration number of species; Rhodophyta; Rottnest_Island; Salinity; Single species; Species; Sporolithon durum; Temperate; Temperature, water; Treatment; Type; Uniform resource locator/link to reference; δ11B |
| url | https://doi.org/10.1594/PANGAEA.875262 |