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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2016
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| Online Access: | https://doi.org/10.1594/PANGAEA.869416 |
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| _version_ | 1867168179001753600 |
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| author | Meyer, Friedrich Wilhelm Vogel, Nikolas Diele, Karen Kunzmann, Andreas Uthicke, Sven Wild, Christian |
| author_facet | Meyer, Friedrich Wilhelm Vogel, Nikolas Diele, Karen Kunzmann, Andreas Uthicke, Sven Wild, Christian |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Coral reefs are facing major global and local threats due to climate change-induced increases in dissolved inorganic carbon (DIC) and because of land-derived increases in organic and inorganic nutrients. Recent research revealed that high availability of labile dissolved organic carbon (DOC) negatively affects scleractinian corals. Studies on the interplay of these factors, however, are lacking, but urgently needed to understand coral reef functioning under present and near future conditions. This experimental study investigated the individual and combined effects of ambient and high DIC (pCO2 403 µatm/ pHTotal 8.2 and 996 µatm/pHTotal 7.8) and DOC (added as Glucose 0 and 294 µmol/L, background DOC concentration of 83 µmol/L) availability on the physiology (net and gross photosynthesis, respiration, dark and light calcification, and growth) of the scleractinian coral Acropora millepora (Ehrenberg, 1834) from the Great Barrier Reef over a 16 day interval. High DIC availability did not affect photosynthesis, respiration and light calcification, but significantly reduced dark calcification and growth by 50 and 23%, respectively. High DOC availability reduced net and gross photosynthesis by 51% and 39%, respectively, but did not affect respiration. DOC addition did not influence calcification, but significantly increased growth by 42%. Combination of high DIC and high DOC availability did not affect photosynthesis, light calcification, respiration or growth, but significantly decreased dark calcification when compared to both controls and DIC treatments. On the ecosystem level, high DIC concentrations may lead to reduced accretion and growth of reefs dominated by Acropora that under elevated DOC concentrations will likely exhibit reduced primary production rates, ultimately leading to loss of hard substrate and reef erosion. It is therefore important to consider the potential impacts of elevated DOC and DIC simultaneously to assess real world scenarios, as multiple rather than single factors influence key physiological processes in coral reefs. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_869416 |
| institution | PANGAEA |
| language | en |
| publishDate | 2016 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Effects of high dissolved inorganic and organic carbon availability on the physiology of the hard coral Acropora millepora from the Great Barrier Reef Meyer, Friedrich Wilhelm Vogel, Nikolas Diele, Karen Kunzmann, Andreas Uthicke, Sven Wild, Christian Acropora millepora; Alkalinity, total; Alkalinity, total, standard deviation; Ammonium, flux; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biological oxygen demand; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, organic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chlorophyll a; Cnidaria; Coast and continental shelf; Dissolved organic carbon, flux; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross photosynthesis rate, oxygen; Growth/Morphology; Growth rate; Laboratory experiment; Maximum photochemical quantum yield of photosystem II; Net photosynthesis rate, oxygen; Nitrite and nitrate, flux; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other; Other metabolic rates; Oxygen saturation; Oxygen saturation, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelorus_Island; pH, standard deviation; pH, total scale; Phosphate, flux; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Protein per surface area; Registration number of species; Replicate; Respiration; Respiration rate, oxygen; Salinity; Salinity, standard deviation; Single species; South Pacific; Species; Temperature, water; Temperature, water, standard deviation; Time of day; Treatment; Tropical; Type; Uniform resource locator/link to reference Coral reefs are facing major global and local threats due to climate change-induced increases in dissolved inorganic carbon (DIC) and because of land-derived increases in organic and inorganic nutrients. Recent research revealed that high availability of labile dissolved organic carbon (DOC) negatively affects scleractinian corals. Studies on the interplay of these factors, however, are lacking, but urgently needed to understand coral reef functioning under present and near future conditions. This experimental study investigated the individual and combined effects of ambient and high DIC (pCO2 403 µatm/ pHTotal 8.2 and 996 µatm/pHTotal 7.8) and DOC (added as Glucose 0 and 294 µmol/L, background DOC concentration of 83 µmol/L) availability on the physiology (net and gross photosynthesis, respiration, dark and light calcification, and growth) of the scleractinian coral Acropora millepora (Ehrenberg, 1834) from the Great Barrier Reef over a 16 day interval. High DIC availability did not affect photosynthesis, respiration and light calcification, but significantly reduced dark calcification and growth by 50 and 23%, respectively. High DOC availability reduced net and gross photosynthesis by 51% and 39%, respectively, but did not affect respiration. DOC addition did not influence calcification, but significantly increased growth by 42%. Combination of high DIC and high DOC availability did not affect photosynthesis, light calcification, respiration or growth, but significantly decreased dark calcification when compared to both controls and DIC treatments. On the ecosystem level, high DIC concentrations may lead to reduced accretion and growth of reefs dominated by Acropora that under elevated DOC concentrations will likely exhibit reduced primary production rates, ultimately leading to loss of hard substrate and reef erosion. It is therefore important to consider the potential impacts of elevated DOC and DIC simultaneously to assess real world scenarios, as multiple rather than single factors influence key physiological processes in coral reefs. |
| title | Effects of high dissolved inorganic and organic carbon availability on the physiology of the hard coral Acropora millepora from the Great Barrier Reef |
| topic | Acropora millepora; Alkalinity, total; Alkalinity, total, standard deviation; Ammonium, flux; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biological oxygen demand; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, organic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chlorophyll a; Cnidaria; Coast and continental shelf; Dissolved organic carbon, flux; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross photosynthesis rate, oxygen; Growth/Morphology; Growth rate; Laboratory experiment; Maximum photochemical quantum yield of photosystem II; Net photosynthesis rate, oxygen; Nitrite and nitrate, flux; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other; Other metabolic rates; Oxygen saturation; Oxygen saturation, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelorus_Island; pH, standard deviation; pH, total scale; Phosphate, flux; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Protein per surface area; Registration number of species; Replicate; Respiration; Respiration rate, oxygen; Salinity; Salinity, standard deviation; Single species; South Pacific; Species; Temperature, water; Temperature, water, standard deviation; Time of day; Treatment; Tropical; Type; Uniform resource locator/link to reference |
| url | https://doi.org/10.1594/PANGAEA.869416 |