Spectral discrimination of coral mortality states following a severe bleaching event

Clark, C. D., Mumby, P. J., Chisholm, J. R. M., Jaubert, J. and Andrefouet, S. (2000) Spectral discrimination of coral mortality states following a severe bleaching event. International Journal of Remote Sensing, 21 11: 2321-2327. doi:10.1080/01431160050029602


Author Clark, C. D.
Mumby, P. J.
Chisholm, J. R. M.
Jaubert, J.
Andrefouet, S.
Title Spectral discrimination of coral mortality states following a severe bleaching event
Journal name International Journal of Remote Sensing   Check publisher's open access policy
ISSN 0143-1161
1366-5901
Publication date 2000-07
Sub-type Article (original research)
DOI 10.1080/01431160050029602
Volume 21
Issue 11
Start page 2321
End page 2327
Total pages 7
Place of publication Colchester, Essex, United Kingdom
Publisher Taylor & Francis
Language eng
Abstract Although relatively easy to distinguish the spectra of bleached and living coral, once corals have died their skeletons remained bleached (white) for only a short period. Rapid colonisation by algae can give rise to pigmentation that may be similar to that of living coral. Thus, by the time remotely sensed imagery has been acquired, discrimination of live and dead corals is no longer facile. Field measurements of spectral reflectance of live and algal-colonised dead corals (arising from different mortality events) were made in French Polynesia. Derivative analysis revealed wavelengths and slope characteristics that could be used to discriminate between mortality states with an accuracy of ~85%. These results encourage application of hyperspectral remote sensing to quantitatively assess the extent of coral bleaching events.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Tue, 23 Nov 2010, 14:31:00 EST