Reconstructing skeletal fiber arrangement and growth mode in the coral Porites lutea (Cnidaria, Scleractinia): a confocal Raman microscopy study

Wall, Marlene and Nehrke, G. (2012) Reconstructing skeletal fiber arrangement and growth mode in the coral Porites lutea (Cnidaria, Scleractinia): a confocal Raman microscopy study Biogeosciences (BG), 9 (11). pp. 4885-4895. DOI 10.5194/bg-9-4885-2012.

[img]
Preview
Text
bg-9-4885-2012.pdf - Published Version
Available under License Creative Commons Attribution.

Download (9Mb) | Preview

Supplementary data:

Abstract

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.

Document Type: Article
Funder compliance: info:eu-repo/grantAgreement/EC/FP7/211384
Additional Information: WOS:000312667300051
Keywords: SPATIAL-DISTRIBUTION; BIOGENIC CARBONATES; CALCIUM-CARBONATE; PORCELLIO-SCABER; RESOLUTION; BIOMINERALIZATION; SPECTROSCOPY; DIAGENESIS; CUTICLE; SR/CA
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
Refereed: Yes
DOI etc.: 10.5194/bg-9-4885-2012
ISSN: 1726-4170
Projects: EPOCA, BIOACID, MedSeA, CalMarO
Date Deposited: 24 Jan 2013 10:26
Last Modified: 24 Jan 2013 10:26
URI: http://oceanrep.geomar.de/id/eprint/20191

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...