Hidden impacts of ocean acidification to live and dead coral framework


Cold-water corals, such as Lophelia pertusa, are key habitat-forming organisms found throughout the world's oceans to 3000 m deep. The complex three-dimensional framework made by these vulnerable marine ecosystems support high biodiversity and commercially important species. Given their importance, a key question is how both the living and the dead framework will fare under projected climate change. Here, we demonstrate that over 12 months L. pertusa can physiologically acclimate to increased CO2, showing sustained net calcification. However, their new skeletal structure changes and exhibits decreased crystallographic and molecular-scale bonding organization. Although physiological acclimatization was evident, we also demonstrate that there is a negative correlation between increasing CO2 levels and breaking strength of exposed framework (approx. 20-30% weaker after 12 months), meaning the exposed bases of reefs will be less effective 'load-bearers', and will become more susceptible to bioerosion and mechanical damage by 2100.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2016-05-16.

DOI https://doi.org/10.1594/PANGAEA.860558
Related Identifier https://doi.org/10.1098/rspb.2015.0990
Related Identifier https://doi.org/10.5285/13d58735-4252-109d-e053-6c86abc0bae4
Related Identifier https://cran.r-project.org/package=seacarb
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.860558
Creator Hennige, Sebastian J (ORCID: 0000-0002-3059-604X); Wicks, L C ORCID logo; Kamenos, N A ORCID logo; Perna, G ORCID logo; Findlay, Helen S; Roberts, J Murray ORCID logo
Publisher PANGAEA
Contributor Yang, Yan
Publication Year 2015
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 9135 data points
Discipline Earth System Research
Spatial Coverage (-7.376 LON, 56.823 LAT)
Temporal Coverage Begin 2011-07-01T00:00:00Z
Temporal Coverage End 2011-07-30T00:00:00Z