Galápagos coral reef persistence after ENSO warming across an acidification gradient
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| Main Authors: | , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2014
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| _version_ | 1867169105929306112 |
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| author | Manzello, Derek P Enochs, Ian C Bruckner, Andrew Renaud, Philip G Kolodziej, Graham Budd, David A Carlton, R Glynn, Peter W |
| author_facet | Manzello, Derek P Enochs, Ian C Bruckner, Andrew Renaud, Philip G Kolodziej, Graham Budd, David A Carlton, R Glynn, Peter W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Anthropogenic CO2 is causing warming and ocean acidification. Coral reefs are being severely impacted, yet confusion lingers regarding how reefs will respond to these stressors over this century. Since the 1982-1983 El Niño-Southern Oscillation warming event, the persistence of reefs around the Galápagos Islands has differed across an acidification gradient. Reefs disappeared where pH<8.0 and aragonite saturation state (Omega arag)<=3 and have not recovered, whereas one reef has persisted where pH>8.0 and Omega arag>3. Where upwelling is greatest, calcification by massive Porites is higher than predicted by a published relationship with temperature despite high CO2, possibly due to elevated nutrients. However, skeletal P/Ca, a proxy for phosphate exposure, negatively correlates with density (R=-0.822, p<0.0001). We propose that elevated nutrients have the potential to exacerbate acidification by depressing coral skeletal densities and further increasing bioerosion already accelerated by low pH. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_847762 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Galápagos coral reef persistence after ENSO warming across an acidification gradient Manzello, Derek P Enochs, Ian C Bruckner, Andrew Renaud, Philip G Kolodziej, Graham Budd, David A Carlton, R Glynn, Peter W Alkalinity, total; Aragonite saturation state; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate; Calcification rate, standard error; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Coulometric titration; Date/time end; Date/time start; Density; Density, standard error; DEPTH, water; Depth, water, standard error; Entire community; Extension rate; Extension rate, standard error; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, total scale; Phosphorus/Calcium ratio; Phosphorus/Calcium ratio, standard error; Potentiometric titration; Replicates; Rocky-shore community; Salinity; Site; South Pacific; Table; Temperature; Temperature, water; Tropical Anthropogenic CO2 is causing warming and ocean acidification. Coral reefs are being severely impacted, yet confusion lingers regarding how reefs will respond to these stressors over this century. Since the 1982-1983 El Niño-Southern Oscillation warming event, the persistence of reefs around the Galápagos Islands has differed across an acidification gradient. Reefs disappeared where pH<8.0 and aragonite saturation state (Omega arag)<=3 and have not recovered, whereas one reef has persisted where pH>8.0 and Omega arag>3. Where upwelling is greatest, calcification by massive Porites is higher than predicted by a published relationship with temperature despite high CO2, possibly due to elevated nutrients. However, skeletal P/Ca, a proxy for phosphate exposure, negatively correlates with density (R=-0.822, p<0.0001). We propose that elevated nutrients have the potential to exacerbate acidification by depressing coral skeletal densities and further increasing bioerosion already accelerated by low pH. |
| title | Galápagos coral reef persistence after ENSO warming across an acidification gradient |
| topic | Alkalinity, total; Aragonite saturation state; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate; Calcification rate, standard error; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Coulometric titration; Date/time end; Date/time start; Density; Density, standard error; DEPTH, water; Depth, water, standard error; Entire community; Extension rate; Extension rate, standard error; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, total scale; Phosphorus/Calcium ratio; Phosphorus/Calcium ratio, standard error; Potentiometric titration; Replicates; Rocky-shore community; Salinity; Site; South Pacific; Table; Temperature; Temperature, water; Tropical |
| url | https://doi.org/10.1594/PANGAEA.847762 |