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Lookup NU author(s): Dr Peter Mumby
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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.
Author(s): Clark CD, Mumby PJ, Chisholm JRM, Jaubert J, Andrefouet S
Publication type: Article
Publication status: Published
Journal: International Journal of Remote Sensing
Year: 2000
Volume: 21
Issue: 11
Pages: 2321-2327
Print publication date: 01/01/2000
ISSN (print): 0143-1161
ISSN (electronic): 1366-5901
Publisher: Taylor & Francis Ltd
URL: http://dx.doi.org/10.1080/01431160050029602
DOI: 10.1080/01431160050029602
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