1. Monitoring long term changes in coral and fish communities in the central South Pacific thierry.lison@criobe.pf CRIOBE (Centre de Recherches Insulaires Observatoire de l'Environnement) UMS 3278 CNRS - EPHE - Université de Perpignan IRCP (Institut des Récifs Coralliens du Pacifique) Moorea - French Polynesia T. LISON DE LOMA, Y. CHANCERELLE, S. PLANES

2. Tiahura area 3 areas - Fringing reef 3 areas - Fringing reef - Barrier reef - Barrier reef - Outer slope - Outer slope Twice a year (Spring and Fall) Twice a year (Spring and Fall) Number of species Number of species Number of individuals Number of individuals 100 m 2 % of substrate cover % of substrate cover Water temperature records Water temperature records Catastrophic events: Catastrophic events: - Acanthaster - Acanthaster - Hurricane - Bleaching Human impacts Human impacts Reef scape/remote sensing mappingReef scape/remote sensing mapping Fish communities Other data / Moorea/Tiahura Data records : 1987 to 2010 (23 years)

3. Temporal increase in total density and SR, BUT… decrease in density of commercial fishes in all habitats.

4. Polynesia Mana Network Coral surveys at different scales: -permanent 1 m2 quadrats -landscape photography (> 10 m) -manta tow (> 100 m) Fish surveys: - 200 m2 transects -total fish fauna -density -size estimates

5. Polynesia Mana Network Tahiti pass, Tetiaroa Tahiti jetty, Tahiti Faaa, Marutea, Rangiroa Tikehau, Mataiva, Aratika Bora Bora, Takapoto, Nengo Nengo, Tubuai

6. Monitoring coral reef fish in MPAs Other confounding effects: habitat disturbances Monitoring inside MPAs eliminates confounding effects due to fishing only after stabilization of fish density/biomass

7. A. planci outbreaks in French Polynesia - - minor coral loss and community change with climate-induced disturbances - 96.1 ± 2.0 % decrease in coral cover due to COTS outbreak  ‘natural’ predation far more devastating than climate-induced recurrent bleaching… so far. - habitat structure intact