Abstract:
The present study was conducted· at Pantai Pasir Cina of Pulau
Bidong, Terengganu. The fluorescence values were measured in-situ
usmg Diving-PAM and underwater camera. Samples were collected
for zooxanthellae count and to measure chlorophyll a concentration.
According to the results, the chlorophyll a concentration was
different from species to species. However, the zooxanthellae
density was not significantly different from species to species. The
results showed that the fluorescence yield Ill the mormng was
significantly different from fluorescence yield lil the afternoon. The
maximum and rmrnmum fluorescence yields measured Ill the noon
were significantly different from depth to depth. The m1rumum and
maxlffium fluorescence yield Ill the noon can be uses to predict the
zooxanthellae density m Stylophora sp., whereas the Fv/Fm m the
afternoon can be uses to predict the zooxanthellae density m
branching Acropora sp. The photographic method suggested that this
method might only be suitable for corals with a flat and uniform
surface. Baseline data should be formed m order to have a better
understand on the reef of Pulau Bidong.
