Seawater carbonate chemistry and gross photosynthesis, respiration, calcification of coralline algae
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2021
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| _version_ | 1867170110981013504 |
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| author | Schubert, Nadine Hofmann, Laurie C Almeida Saá, Antonella C Moreira, Anderson Camargo Arenhart, Rafael Güntzel Fernandes, Celso Peres de Beer, Dirk Horta, Paulo Antunes Silva, João |
| author_facet | Schubert, Nadine Hofmann, Laurie C Almeida Saá, Antonella C Moreira, Anderson Camargo Arenhart, Rafael Güntzel Fernandes, Celso Peres de Beer, Dirk Horta, Paulo Antunes Silva, João |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Rhodolith beds built by free-living coralline algae are important ecosystems for marine biodiversity and carbonate production. Yet, our mechanistic understanding regarding rhodolith physiology and its drivers is still limited. Using three rhodolith species with different branching morphologies, we investigated the role of morphology in species' physiology and the implications for their susceptibility to ocean acidification (OA). For this, we determined the effects of thallus topography on diffusive boundary layer (DBL) thickness, the associated microscale oxygen and pH dynamics and their relationship with species' metabolic and light and dark calcification rates, as well as species' responses to short-term OA exposure. Our results show that rhodolith branching creates low-flow microenvironments that exhibit increasing DBL thickness with increasing branch length. This, together with species' metabolic rates, determined the light-dependent pH dynamics at the algal surface, which in turn dictated species' calcification rates. While these differences did not translate in species-specific responses to short-term OA exposure, the differences in the magnitude of diurnal pH fluctuations ( 0.1–1.2 pH units) between species suggest potential differences in phenotypic plasticity to OA that may result in different susceptibilities to long-term OA exposure, supporting the general view that species' ecomechanical characteristics must be considered for predicting OA responses. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_937216 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and gross photosynthesis, respiration, calcification of coralline algae Schubert, Nadine Hofmann, Laurie C Almeida Saá, Antonella C Moreira, Anderson Camargo Arenhart, Rafael Güntzel Fernandes, Celso Peres de Beer, Dirk Horta, Paulo Antunes Silva, João Alkalinity, total; Aragonite saturation state; Arvoredo_Marine_Biological_Reserve; Benthos; Bicarbonate ion; Calcification/Dissolution; Calcification rate, standard error; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross photosynthesis rate, oxygen; Gross photosynthesis rate, oxygen, standard error; Laboratory experiment; Lithophyllum atlanticum; Lithothamnion crispatum; Macroalgae; Melyvonnea erubescens; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, NBS scale; pH, total scale; Plantae; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Registration number of species; Respiration; Respiration rate, oxygen; Respiration rate, oxygen, standard error; Rhodophyta; Salinity; Single species; South Atlantic; Species; Temperate; Temperature, water; Treatment; Type; Uniform resource locator/link to reference Rhodolith beds built by free-living coralline algae are important ecosystems for marine biodiversity and carbonate production. Yet, our mechanistic understanding regarding rhodolith physiology and its drivers is still limited. Using three rhodolith species with different branching morphologies, we investigated the role of morphology in species' physiology and the implications for their susceptibility to ocean acidification (OA). For this, we determined the effects of thallus topography on diffusive boundary layer (DBL) thickness, the associated microscale oxygen and pH dynamics and their relationship with species' metabolic and light and dark calcification rates, as well as species' responses to short-term OA exposure. Our results show that rhodolith branching creates low-flow microenvironments that exhibit increasing DBL thickness with increasing branch length. This, together with species' metabolic rates, determined the light-dependent pH dynamics at the algal surface, which in turn dictated species' calcification rates. While these differences did not translate in species-specific responses to short-term OA exposure, the differences in the magnitude of diurnal pH fluctuations ( 0.1–1.2 pH units) between species suggest potential differences in phenotypic plasticity to OA that may result in different susceptibilities to long-term OA exposure, supporting the general view that species' ecomechanical characteristics must be considered for predicting OA responses. |
| title | Seawater carbonate chemistry and gross photosynthesis, respiration, calcification of coralline algae |
| topic | Alkalinity, total; Aragonite saturation state; Arvoredo_Marine_Biological_Reserve; Benthos; Bicarbonate ion; Calcification/Dissolution; Calcification rate, standard error; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross photosynthesis rate, oxygen; Gross photosynthesis rate, oxygen, standard error; Laboratory experiment; Lithophyllum atlanticum; Lithothamnion crispatum; Macroalgae; Melyvonnea erubescens; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, NBS scale; pH, total scale; Plantae; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Registration number of species; Respiration; Respiration rate, oxygen; Respiration rate, oxygen, standard error; Rhodophyta; Salinity; Single species; South Atlantic; Species; Temperate; Temperature, water; Treatment; Type; Uniform resource locator/link to reference |
| url | https://doi.org/10.1594/PANGAEA.937216 |