Seawater carbonate chemistry and carbon sources of mussel shell carbonate

6533b882fe1ef96bd12d9e0c

RESEARCH PRODUCT

Seawater carbonate chemistry and carbon sources of mussel shell carbonate

Yanan Lu Li Wang Liangshu Wang Y Cong Guojun Yang Liqiang Zhao

subject

Ocean Acidification International Coordination Centre (OA-ICC)Temperate Registration number of species Salinity Mytilus edulis inorganic Alkalinity Experiment Temperature water Carbon inorganic dissolved hemic and lymphatic diseases Calculated using seacarb after Nisumaa et al 2010 Percentage Aragonite saturation state North Pacific δ13C dissolved inorganic carbon standard deviation Alkalinity total Salinity standard error total pH Temperature Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard error dissolved Laboratory experiment Carbonate ion Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard error Containers and aquaria 20 1000 L or 1 m 2 δ13C dissolved inorganic carbon Earth System Research δ13C Containers and aquaria (20-1000 L or < 1 m**2)standard deviation Uniform resource locator link to reference circulatory and respiratory physiology Calcite saturation state water Containers and aquaria (20-1000 L or < 1 m**2)Benthos Alkalinity total standard error Uniform resource locator/link to reference Ocean Acidification International Coordination Centre OA ICC Animalia Type Bicarbonate ion Temperature water standard error Calculated using seacarb after Nisumaa et al. (2010)Species pH standard error Calcite saturation state standard error Carbonate system computation flag dissolved inorganic carbon Fugacity of carbon dioxide (water) at sea surface temperature (wet air)Carbon Biomass/Abundance/Elemental composition Partial pressure of carbon dioxide water at sea surface temperature wet air Carbon dioxide Mollusca Single species Fugacity of carbon dioxide water at sea surface temperature wet air Benthic animals δ13C standard deviation Biomass Abundance Elemental composition Coast and continental shelf

description

Ocean acidification and warming is widely reported to affect the ability of marine bivalves to calcify, but little is known about the underlying mechanisms. In particular, the response of their calcifying fluid carbonate chemistry to changing seawater carbonate chemistry remains poorly understood. The present study deciphers sources of the dissolved inorganic carbon (DIC) in the calcifying fluid of the blue mussel (Mytilus edulis) reared at two pH (8.1 and 7.7) and temperature (16 and 22 °C) levels for five weeks. Stable carbon isotopic ratios of seawater DIC, mussel soft tissues and shells were measured to determine the relative contribution of seawater DIC and metabolically generated carbon to the internal calcifying DIC pool. At pH 8.1, the percentage of seawater DIC synthesized into shell carbonate decreases slightly from 83.8% to 80.3% as temperature increases from 16 to 22 °C. Under acidified conditions, estimates of percent seawater DIC incorporation decreases clearly to 65.6% at 16 °C and to 62.3% at 22 °C, respectively. These findings indicate that ongoing ocean acidification and warming may interfere with the calcification physiology of M. edulis through interfering with its ability to efficiently extract seawater DIC to the calcifying front.

year	journal	country	edition	language
2018-01-01

https://dx.doi.org/10.1594/pangaea.907827