Combining Landsat ETM plus and Reef Check classifications for mapping coral reefs: A critical assessment from the southern Great Barrier Reef, Australia
While the remote-sensing community attempts to find measures of reef ‘‘health’’ able to be detected and mapped using satellite image data, internationally recognized field assessments are already in place to document benthic cover, among other parameters, as an indicator of coral reef status. Reef Check is one such program, designed in 1996 as a globally applicable, rapid, field-survey protocol for coral reef health monitoring by volunteer divers (Hodgson 1999). The protocol is designed to provide a measure of reef health based on indicator species or families for fish, invertebrates, and substrates. Data collected contribute to a global-scale database on coral reef status for use in management plans (Hodgson 1999).