Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification ...

• Main Authors: Tanaka, Yasuaki, Iguchi, Akira, Nishida, Kozue, Inoue, Mayuri, Nakamura, Takashi, Suzuki, Atsushi, Sakai, Kazuhiko
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Acropora digitifera; Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Laboratory experiment; Macro-nutrients; North Pacific; Primary production/Photosynthesis; Single species; Temperate; Species; Treatment; Calcification rate; Calcification rate, standard error; Chlorophyll a per cell; Chlorophyll a, standard error; Chlorophyll a; Symbiont cell density; Symbiont cell density, standard error; Net photosynthesis rate, oxygen; Net photosynthesis rate, oxygen, standard error; δ18O; δ18O, standard error; δ13C; δ13C, standard error; Salinity; Temperature, water; Temperature, water, standard deviation; pH; pH, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Alkalinity, total; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Carbon, inorganic, dissolved; Calcite saturation state; Experiment; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.837683; https://doi.pangaea.de/10.1594/PANGAEA.837683

The interactive effects of nutrient availability and ocean acidification on coral calcification were investigated using post-settlement juvenile corals of Acropora digitifera cultured in nutrient-sufficient or nutrient-depleted seawater for 4 d and then exposed to seawater with different partial pressure of carbon dioxide () conditions (38.8 or 92.5 Pa) for 10 d. After the nutrient pretreatment, corals in the high nutrient condition (HN corals) had a significantly higher abundance of endosymbiotic algae than did those in the low nutrient condition (LN corals). The high abundance of endosymbionts in HN corals was reduced as a result of subsequent seawater acidification, and the chlorophyll a per algal cell increased. The photosynthetic oxygen production rate by endosymbionts was enhanced by the acidified seawater regardless of the nutrient treatment, indicating that the reduction in endosymbiont density in HN corals due to acidification was compensated for by the increase in chlorophyll a per cell. Though the ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2014-10-31. ...