Seawater carbonate chemistry and pteropod Limacina helicina antarctica shell dissolution during experiments, 2012

Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced...

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Bibliographic Details
Main Authors: Bednaršek, Nina, Tarling, Geraint A, Bakker, Dorothee C E, Fielding, Sophie, Cohen, Anne L, Kuzirian, Alan, McCorkle, Daniel C, Lézé, Bertrand, Montagna, Roberto
Format: Dataset
Language:English
Published: PANGAEA 2012
Subjects:
Alkalinity
total
standard deviation
Animalia
Antarctic
Aragonite saturation state
Bicarbonate ion
Bottles or small containers/Aquaria (<20 L)
Calcification/Dissolution
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
partial pressure
Coulometric titration
Dissolution rate
EPOCA
EUR-OCEANS
European network of excellence for Ocean Ecosystems Analysis
European Project on Ocean Acidification
Experimental treatment
Fugacity of carbon dioxide (water) at sea surface temperature (wet air)
Individuals
non-dissolving
standard-deviation
Laboratory experiment
Limacina helicina antarctica
Antarc*
Antarctica
Limacina helicina
Ocean acidification
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.779926
https://doi.org/10.1594/PANGAEA.779926
Description
Summary:Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2 enriched seawater for between 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels of dissolution showed a good correspondence to the incubation conditions, with the most severe damage found in specimens held for 14 d in undersaturated condition (Ohm ~ 0.8). This methodology enables the response of small pelagic calcifiers to acidified conditions to be detected at an early stage, thus making pteropods a valuable bioindicator of future ocean acidification.

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