Effects of CO2 enrichment on cockle shell growth interpreted with a Dynamic Energy Budget model

The increase in human induced atmospheric CO2 level leads to an increase in ocean acidification (OA). Mitigation of this increase by storage of CO2 in abandoned marine oil and gas reservoirs is seen as an interesting cost effective solution. However, this involves a risk of CO2 loss causing localise...

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Bibliographic Details
Published in:Journal of Sea Research
Main Authors: Klok, T.C., Wijsman, J.W.M., Kaag, N.H.B.M., Foekema, E.M.
Format: Article in Journal/Newspaper
Language:English
Published: 2014
Subjects:
cerastoderma-edule
consequences
early-life stages
elevated-temperature
exposure
impact
mytilus-edulis
ocean acidification
population-level
reproduction
Ocean acidification
Online Access:https://research.wur.nl/en/publications/effects-of-co2-enrichment-on-cockle-shell-growth-interpreted-with
https://doi.org/10.1016/j.seares.2014.01.011
Description
Summary:The increase in human induced atmospheric CO2 level leads to an increase in ocean acidification (OA). Mitigation of this increase by storage of CO2 in abandoned marine oil and gas reservoirs is seen as an interesting cost effective solution. However, this involves a risk of CO2 loss causing localised reductions in seawater pH. In this paper we report on the effects of CO2 enhancement on the growth of the bivalve Cerastoderma edule in mesocosms. The experiments show significant reductions in shell length, shell weight and cockle flesh dry weight at increased CO2 level suggesting both direct (shell erosion) and indirect (metabolic) effects. Indirect effects were analysed and interpreted using a Dynamic Energy Budget model by describing changes in 3 metabolic processes: assimilation, maintenance, and growth. Based on cockle size data only we could not differentiate between these processes, however, by using variability of DEB parameter values in 11 bivalve species, we showed growth to be the least relevant process.

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