The next step in shallow coral reef monitoring: combining remote sensing and in situ approaches.
Most current coral reef management is supported by mapping and monitoring limited in record length and spatial extent. These deficiencies were addressed in a multidisciplinary study of cyclone impacts on Aboré Reef, New-Caledonia. Local knowledge, high thematic-resolution maps, and time-series satellite imagery complemented classical in situ monitoring methods. Field survey stations were selected from examination of pre- and post-cyclone images and their post-cyclone coral communities documented in terms of substrata, coral morphologies, live coral cover, and taxonomy. Time-series maps of hierarchically defined coral communities created at spatial scales documenting the variability among communities (29-45 classes) and suggesting the processes that affected them. The increased spatial coverage and repeatability of this approach significantly improved the recognition and interpretation of coral communities' spatio-temporal variability. It identified precise locations of impacted areas and those exhibiting coral recovery and resilience. The approach provides a comprehensive suite of information on which to base reef-scale conservation actions.
Scopélitis
Julie
J
Centre for Remote Sensing and Spatial Information Science, School of Geography, Planning and Environment Management, University of Queensland, Brisbane, QLD, Australia. j.scopelitis@uq.edu.au
Andréfouët
Serge
S
Phinn
Stuart
S
Arroyo
Lara
L
Dalleau
Mayeul
M
Cros
Annick
A
Chabanet
Pascale
P
D000818:Animals; D037421:Anthozoa; D057894:Coral Reefs; D055867:Cyclonic Storms; D004784:Environmental Monitoring / Q000379:methods*; D009510:New Caledonia; D011157:Population Dynamics; D058998:Remote Sensing Technology