Global Reef Expedition Final Report: French Polynesia

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RESULTS TUAMOTU ARCHIPELAGO

3.2 b

BENTHIC COVER ASSESSMENT Throughout all of the SCUBA survey sites visited in

Aratika, Rangiroa, Raraka, and Fakarava had nearly

the Tuamotu Archipelago, the primary substrate type was

identical coral cover, ranging from 33-38% overall live

hard bottom pavement, followed by live coral. Figure 17

coral. The atolls of Toau and Hao had slightly lower coral

shows the average percentage of the dominant benthic

cover with 18% (± 14% S.D.) and 24% (± 14% S.D.) coral

cover found at each island. As seen in Figure 17, the coral

cover recorded, respectively. The dominant corals in the

and algae cover was not highly variable by atoll.

Tuamotu Archipelago are the same as those found in the

Throughout all of the atolls sampled, between

Society Archipelago, with Pocillopora and Porites being the

46-54% of the overall live cover was algae, with CCA being

two most dominant coral genera. At Aratika, Rangiroa, and

the dominant algae type, except for Toau (Figure 18).

Hao, Pocillopora was the dominant coral genus recorded,

Toau was unique as it was dominated by fleshy macroalgae

covering 47% (± 22% S.D.), 42% (± 23% S.D.), and 24%

which measured 41% (± 29% S.D.) of the total algae recorded.

(± 25% S.D.) of the substrate respectively. The three

Figure 17 BENTHIC COVER (%) OF THE ISLANDS SURVEYED IN THE TUAMOTU ARCHIPELAGO. THE SUBSTRATE TYPES ARE BARE SUBSTRATE, ALGAE, LIVE CORAL, AND INVERTEBRATES.

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