Seawater carbonate chemistry and shell mineralogy, microstructure, and mechanical strength of four Mediterranean gastropod species near a CO2 seep

6533b883fe1ef96bd12dbe86

RESEARCH PRODUCT

Seawater carbonate chemistry and shell mineralogy, microstructure, and mechanical strength of four Mediterranean gastropod species near a CO2 seep

Ashley Duquette James B Mcclintock Charles D Amsler Alberto Pérez-huerta Marco Milazzo Jason M Hall-spencer

subject

Ocean Acidification International Coordination Centre (OA-ICC)Identification Registration number of species Salinity Temperate inorganic Alkalinity Experiment Temperature water Carbon inorganic dissolved Calculated using seacarb after Nisumaa et al 2010 Aragonite saturation state Alkalinity total Salinity standard error Patella caerulea total CO2 vent pH Calcite Temperature Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard error dissolved Carbonate ion Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard error Earth System Research Field observation Uniform resource locator link to reference Potentiometric titration Calcite saturation state Length Location Potentiometric water Growth Morphology Hexaplex trunculus Alkalinity total standard error Benthos Uniform resource locator/link to reference Osilinus turbinatus Other studied parameter or process Mediterranean Sea Ocean Acidification International Coordination Centre OA ICC Animalia Bicarbonate ion Type Temperature water standard error Calculated using seacarb after Nisumaa et al. (2010)Force Species pH standard error Calculated using CO2SYS Carbonate system computation flag Fugacity of carbon dioxide (water) at sea surface temperature (wet air)Carbon Elasticity Treatment Aragonite saturation state standard error Partial pressure of carbon dioxide water at sea surface temperature wet air Aragonite Carbon dioxide Mollusca Growth/Morphology Single species Benthic animals Fugacity of carbon dioxide water at sea surface temperature wet air Patella rustica Toughness Coast and continental shelf

description

Marine CO2 seeps allow the study of the long-term effects of elevated pCO2 (ocean acidification) on marine invertebrate biomineralization. We investigated the effects of ocean acidification on shell composition and structure in four ecologically important species of Mediterranean gastropods (two limpets, a top-shell snail, and a whelk). Individuals were sampled from three sites near a volcanic CO2 seep off Vulcano Island, Italy. The three sites represented ambient (8.15 pH), moderate (8.03 pH) and low (7.73 pH) seawater mean pH. Shell mineralogy, microstructure, and mechanical strength were examined in all four species. We found that the calcite/aragonite ratio could vary and increased significantly with reduced pH in shells of one of the two limpet species. Moreover, each of the four gastropods displayed reductions in either inner shell toughness or elasticity at the Low pH site. These results suggest that near-future ocean acidification could alter shell biomineralization and structure in these common gastropods.

year	journal	country	edition	language
2017-01-01

https://doi.org10.1594/pangaea.890582 https://doi.org/https://doi.org/10.1594/PANGAEA.890582