Wall, Marlene; Nehrke, Gernot (2015): Raman spectra obtained at different skeletal region of the tropical coral Porites sp. PANGAEA, https://doi.org/10.1594/PANGAEA.842759, Supplement to: Wall, M; Nehrke, G (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, https://doi.org/10.5194/bg-9-4885-2012
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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.
Project(s):
Coverage:
Median Latitude: 8.570000 * Median Longitude: 97.920000 * South-bound Latitude: 7.580000 * West-bound Longitude: 97.470000 * North-bound Latitude: 9.560000 * East-bound Longitude: 98.370000
Date/Time Start: 2010-05-01T00:00:00 * Date/Time End: 2010-05-01T00:00:00
Minimum Elevation: -15.0 m * Maximum Elevation: -15.0 m
Event(s):
Comment:
CalMarO - Calcification by marine organisms, PEOPLE-2007-1-1-ITN Marie Curie Action: 215157
BioAcid - German Ministry for Education and Research Project (BMBF), Grant number 03F0608B, Bioacid 3.2.3, Coral Calcification in marginal reefs
EPOCA - European Commission EU FP7 through grant 211384
MedSeA - European Community's FP7 under grant agreement 265103
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Figure | Fig | Wall, Marlene | |||
| 3 | Sample code/label | Sample label | Wall, Marlene | |||
| 4 | Wave number | W no | 1/cm | Wall, Marlene | Raman shift | |
| 5 | Counts | Counts | # | Wall, Marlene | Intensity counts |
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