REEF CHECK AT BORA BORA
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NEBB 2009 REEF CHECK AT BORA BORA NATURE AWARENESS BORA BORA MAY 2009
description
NATURE AWARENESS BORA BORA MAY 2009. REEF CHECK AT BORA BORA. MOTU HAAPITI SITE. MOTU HAAPITI. SITE CHARACTERISTICS Barrier reef Wild natural site Surveyed since 2006 Survey financed by the Bora Bora Pearl Beach Resort Survey period: May to November Depth: 1.00m/3 feet - PowerPoint PPT Presentation
Transcript of REEF CHECK AT BORA BORA
NEBB 2009
REEF CHECK AT BORA BORA
NATURE AWARENESS BORA BORA
MAY 2009
NEBB 2009
MOTU HAAPITI SITE
NEBB 2009
MOTU HAAPITI
SITE CHARACTERISTICSBarrier reef
Wild natural site
Surveyed since 2006
Survey financed by the Bora Bora Pearl Beach Resort
Survey period: May to November
Depth: 1.00m/3 feet
GPS: 16°27'421’’ S and 151°46'548’’ W
Damage observed: from both fishing activity and from natural tides.
Fishing practices: park, cages, spear guns and line fishing
Protection (public/ private): none
Reef-Check Agent: Francesca Kindle
NEBB 2009
MOTU HAAPITI
EVOLUTION OF BOTTOM COVERAGE
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OBSERVATION POINTS
LIVE CORALS RECENTLY DEAD CORALS ROCK ALGAE
MOTU HAAPITI
EVOLUTION OF BOTTOM COVERAGE
NEBB 2009
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nov-06 mai-07 nov-07 mai-08 nov-08 mai-09
en % LIVE CORALS DEAD CORALS
NEBB 2009
MOTU HAAPITI
EVOLUTION OF BIOLOGICAL FILTERING AGENTS: GIANT CLAMS
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nov-06 m a i-07 nov-07 m a i-08 nov-08 m a i-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF DETRIVORE AS BIOLOGICAL INDICATORS:
MULLET & SEA CUCUMBER
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NEBB 2009
MOTU HAAPITI
EVOLUTION OF SEA CUCUMBER POPULATIONS
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se pt-06 m a rs-07 se pt-07 m a rs-08 nov-08 m a rs-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF MULLETS POPULATIONS
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nov-06 m a i-07 nov-07 m a i-08 nov-08 m a i-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF HERBIVORES AS BIOLOGICAL INDICATORS
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nov-06 mai-07 nov-07 mai-08 nov-08 mai-09
SURGEON FISH TROCAS TRIPNEUSTES
NEBB 2009
MOTU HAAPITI
EVOLUTION OF TROCA POPULATIONS
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se pt-06 m a rs-07 se pt-07 m a rs-08 nov-08 m a rs-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF TRIPNEUSTE SEA URCHIN POPULATIONS
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NEBB 2009
MOTU HAAPITI
EVOLUTION OF SURGEON FISH POPULATIONS
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nov-06 m a i-07 nov-07 m a i-08 nov-08 m a i-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF STRICTLY CARNIVORES ANIMALSAS BIOLOGICAL INDICATORS
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nov-06 mai-07 nov-07 mai-08 nov-08 mai-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF CROWN OF THORNS STARFISH POPULATION
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nov.-06 m a i-07 nov.-07 m a i-08 nov.-08 m a i-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF GROUPER POPULATIONS
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NEBB 2009
MOTU HAAPITI
EVOLUTION OF OMNIVORES AS BIOLOGICAL INDICATORS
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nov-06 mai-07 nov-07 mai-08 nov-08 mai-09
DIADEM SEA URCHINS LONG SPINED URCHINS BUTTERFLY FISH PARROT FISH
NEBB 2009
MOTU HAAPITI
EVOLUTION OF DIADEM SEA URCHINS POPULATIONS
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nov-06 m a i-07 nov-07 m a i-08 nov-08 m a i-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF LONG SPINED SEA URCHIN POPULATIONS
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nov.-06 m a i-07 nov.-07 m a i-08 nov.-08 m a i-09
NEBB 2009
MOTU HAAPITI
EVOLUTION OF BUTTERFLY FISH POPULATIONS
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NEBB 2009
MOTU HAAPITI
EVOLUTION OF PARROT FISH POPULATIONS
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NEBB 2009
GENERAL COMMENTS ON THE EVOLUTION OVER TIME OF SUBSTRATES AND OF ANIMAL POPULATIONS.
MOTU HAAPITI - JUNE 2009.
1. Substrates. Surveyed for some 2,5 years, this site shows, on the one
hand, a certain stability in its living coral cover and, on the other hand, the recent appearance of macrophytic algae. The site is little frequented and so damage is slight even though it is situated in a « hoa » that generally attracts fishermen and hunters.
2. Animals. Detritivores are scarce since sedimentary pockets
themselves are almost totally absent. Herbivores have been more abundant over the last two surveys, which correlates with the appearance of macrophytic algae.
NEBB 2009
Carnivores principally confirm the arrival of crown of thorns starfish from the barrier reef itself and not just through the only pass of the island.
The populations of omnivores have exploded over two surveys, in particular the number of diadem sea urchins. The reason for this change is still unknown and it will be necessary to make at least two more surveys.
This site is likely to see significant changes in the coming months given the new presence of crown of thorns starfish. The final result for living corals could resemble that observed in the south of the island in 2002.
