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Bibliographic Details
Main Authors: Diaz-Pulido, Guillermo, Gouezo, Marine, Tilbrook, Bronte, Dove, Sophie, Anthony, Kenneth R N
Format: Dataset Open Access
Language:en
Published: PANGAEA 2011
Subjects:
Acropora intermedia; Alkalinity, total; Alkalinity, total, standard deviation; Ammonium; Ammonium, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, organic, dissolved; Carbon, organic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; Chromista; Coast and continental shelf; Coulometric titration; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Identification; Laboratory experiment; Lobophora papenfussii; Macroalgae; Nitrate; Nitrate, standard deviation; Nitrite; Nitrite, standard deviation; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Ochrophyta; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, standard deviation; pH, total scale; pH meter (Mettler Toledo, USA); Phosphate; Phosphate, standard deviation; Potentiometric open-cell titration; Replicates; Salinity; Sample ID; South Pacific; Species; Species interaction; Temperature, water; Tropical
Online Access:https://doi.org/10.1594/PANGAEA.771295
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Table of Contents:
  • Space competition between corals and seaweeds is an important ecological process underlying coral-reef dynamics. Processes promoting seaweed growth and survival, such as herbivore overfishing and eutrophication, can lead to local reef degradation. Here, we present the case that increasing concentrations of atmospheric CO2 may be an additional process driving a shift from corals to seaweeds on reefs. Coral (Acropora intermedia) mortality in contact with a common coral-reef seaweed (Lobophora papenfussii) increased two- to threefold between background CO2 (400 ppm) and highest level projected for late 21st century (1140 ppm). The strong interaction between CO2 and seaweeds on coral mortality was most likely attributable to a chemical competitive mechanism, as control corals with algal mimics showed no mortality. Our results suggest that coral (Acropora) reefs may become increasingly susceptible to seaweed proliferation under ocean acidification, and processes regulating algal abundance (e.g. herbivory) will play an increasingly important role in maintaining coral abundance.

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