Colony-specific calcification and mortality under ocean acidification in the branching coral Montipora digitata

Ocean acidification (OA) threatens calcifying marine organisms including reef-building corals. In this study, we examined the OA responses of individual colonies of the branching scleractinian coral Montipora digitata. We exposed nubbins of unique colonies (n = 15) to ambient or elevated pCO2 under...

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Bibliographic Details
Main Authors: Kavousi, Javid, Tanaka, Yasuaki, Nishida, Kozue, Suzuki, Atsushi, Nojiri, Yukihiro, Nakamura, Takashi
Format: Dataset
Language:English
Published: PANGAEA 2016
Subjects:
Alkalinity
total
standard deviation
Animalia
Aragonite saturation state
Benthic animals
Benthos
Bicarbonate ion
Bise_OA
Calcification/Dissolution
Calcification rate
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
Cnidaria
Coast and continental shelf
Containers and aquaria (20-1000 L or < 1 m**2)
EXP
Experiment
Fugacity of carbon dioxide (water) at sea surface temperature (wet air)
Identification
Laboratory experiment
Montipora digitata
Mortality
Mortality/Survival
North Pacific
OA-ICC
Ocean Acidification International Coordination Centre
Partial pressure of carbon dioxide
Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)
pH
Registration number of species
Salinity
Ocean acidification
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.864505
https://doi.org/10.1594/PANGAEA.864505
Description
Summary:Ocean acidification (OA) threatens calcifying marine organisms including reef-building corals. In this study, we examined the OA responses of individual colonies of the branching scleractinian coral Montipora digitata. We exposed nubbins of unique colonies (n = 15) to ambient or elevated pCO2 under natural light and temperature regimes for 110 days. Although elevated pCO2 exposure on average reduced calcification, individual colonies showed unique responses ranging from declines in positive calcification to negative calcification (decalcification) to no change. Similarly, mortality was greater on average in elevated pCO2, but also showed colony-specific patterns. High variation in colony responses suggests the possibility that ongoing OA may lead to natural selection of OA-tolerant colonies within a coral population.

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