Biological impacts of enhanced alkalinity in Carcinus maenas

Further steps are needed to establish feasible alleviation strategies that are able to reduce the impacts of ocean acidification, whilst ensuring minimal biological side-effects in the process. Whilst there is a growing body of literature on the biological impacts of many other carbon dioxide reduct...

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Bibliographic Details
Main Authors: Cripps, Gemma, Widdicombe, Stephen, Spicer, John I, Findlay, Helen S
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
Acid-base regulation
Alkalinity
total
Animalia
Aragonite saturation state
Arthropoda
Benthic animals
Benthos
Bicarbonate ion
Bottles or small containers/Aquaria (<20 L)
Calcite saturation state
Calcium hydroxide
Calcium ion
standard deviation
Calculated using CO2SYS
Calculated using seacarb after Nisumaa et al. (2010)
Carbon
inorganic
dissolved
Carbonate ion
Carbonate system computation flag
Carbon dioxide
Carcinus maenas
Coast and continental shelf
EXP
Experiment
Fugacity of carbon dioxide (water) at sea surface temperature (wet air)
Haemolymph
partial pressure of carbon dioxide
pH
potassium ion
total carbon dioxide
Identification
Laboratory experiment
Magnesium ion
Mountbatten_Plymouth_Devon
North Atlantic
OA-ICC
Ocean Acidification International Coordination Centre
Osmolality
Ocean acidification
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.829880
https://doi.org/10.1594/PANGAEA.829880
Description
Summary:Further steps are needed to establish feasible alleviation strategies that are able to reduce the impacts of ocean acidification, whilst ensuring minimal biological side-effects in the process. Whilst there is a growing body of literature on the biological impacts of many other carbon dioxide reduction techniques, seemingly little is known about enhanced alkalinity. For this reason, we investigated the potential physiological impacts of using chemical sequestration as an alleviation strategy. In a controlled experiment, Carcinus maenas were acutely exposed to concentrations of Ca(OH)2 that would be required to reverse the decline in ocean surface pH and return it to pre-industrial levels. Acute exposure significantly affected all individuals' acid-base balance resulting in slight respiratory alkalosis and hyperkalemia, which was strongest in mature females. Although the trigger for both of these responses is currently unclear, this study has shown that alkalinity addition does alter acid-base balance in this comparatively robust crustacean species.

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