Raman spectra obtained at different skeletal region of the tropical coral Porites sp.


Confocal Raman microscopy (CRM) mapping was used to investigate the microstructural arrangement and organic matrix distribution within the skeleton of the coral Porites lutea. Relative changes in the crystallographic orientation of crystals within the fibrous fan-system could be mapped, without the need to prepare thin sections, as required if this information is obtained by polarized light microscopy. Simultaneously, incremental growth lines can be visualized without the necessity of etching and hence alteration of sample surface. Using these methods two types of growth lines could be identified: one corresponds to the well-known incremental growth layers, whereas the second type of growth lines resemble denticle finger-like structures (most likely traces of former spines or skeletal surfaces). We hypothesize that these lines represent the outer skeletal surface before another growth cycle of elongation, infilling and thickening of skeletal areas continues. We show that CRM mapping with high spatial resolution can significantly improve our understanding of the micro-structural arrangement and growth patterns in coral skeletons.

CalMarO - Calcification by marine organisms, PEOPLE-2007-1-1-ITN Marie Curie Action: 215157BioAcid - German Ministry for Education and Research Project (BMBF), Grant number 03F0608B, Bioacid 3.2.3, Coral Calcification in marginal reefsEPOCA - European Commission EU FP7 through grant 211384MedSeA - European Community's FP7 under grant agreement 265103

Supplement to: Wall, Marlene; Nehrke, Gernot (2012): Reconstructing skeletal fiber arrangement and growth mode in the coral Porites lutea (Cnidaria, Scleractinia): a confocal Raman microscopy study. Biogeosciences, 9(11), 4885-4895

DOI https://doi.org/10.1594/PANGAEA.842759
Related Identifier https://doi.org/10.5194/bg-9-4885-2012
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.842759
Creator Wall, Marlene ORCID logo; Nehrke, Gernot ORCID logo
Publisher PANGAEA
Publication Year 2015
Funding Reference Seventh Framework Programme https://doi.org/10.13039/100011102 Crossref Funder ID 211384 https://cordis.europa.eu/project/id/211384 European Project on Ocean Acidification; Seventh Framework Programme https://doi.org/10.13039/100011102 Crossref Funder ID 265103 https://cordis.europa.eu/project/id/265103 Mediterranean Sea Acidification in a Changing Climate
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 40431 data points
Discipline Earth System Research
Spatial Coverage (97.470W, 7.580S, 98.370E, 9.560N); Burma Sea, Andaman Sea