Publication Date:
2024-03-15
Description:
This study investigates the effects of long-term exposure to OA on skeletal parameters of four tropical zooxanthellate corals naturally living at CO2 seeps and adjacent control sites from two locations (Dobu and Upa Upasina) in the Papua New Guinea underwater volcanic vent system. The seeps are characterized by seawater pH values ranging from 8.0 to about 7.7. The skeletal porosity of Galaxea fascicularis, Acropora millepora, massive Porites, and Pocillopora damicornis was higher (up to ~ 40%, depending on the species) at the seep sites compared to the control sites. Pocillopora damicornis also showed a decrease of micro-density (up to 7%). Thus, further investigations conducted on this species showed an increase of the volume fraction of the larger pores (up to 7%), a decrease of the intraskeletal organic matrix content (up to 15%), and an increase of the intraskeletal water content (up to 59%) at the seep sites. The organic matrix related strain and crystallite size did not vary between seep and control sites. This multi-species study showed a common phenotypic response among different zooxanthellate corals subjected to the same environmental pressures, leading to the development of a more porous skeletal phenotype under OA.
Keywords:
Acropora millepora; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; CO2 vent; Coast and continental shelf; Density; Density, standard deviation; Field observation; Fraction; Fraction, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Galaxea fascicularis; Growth/Morphology; Location; OA-ICC; Ocean Acidification International Coordination Centre; Organic matrix; Organic matrix, standard deviation; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Pocillopora damicornis; Porites sp.; Porosity; Porosity, standard deviation; Registration number of species; Replicates; Salinity; Salinity, standard deviation; Single species; Site; South Pacific; Species; Temperature, water; Temperature, water, standard deviation; Tropical; Type; Uniform resource locator/link to reference; Water; Water, standard deviation
Type:
Dataset
Format:
text/tab-separated-values, 772 data points
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