Summary report of coral reefs in Spartly Islands in April 2005

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The percentage of hard substratum cover will be using the Points Intercept method (Hodgson and Waddell,1996) on the 6 replicate of the transect 150 m total long The data was collected including by hard coral, soft coral (to the specific of genus and living growth of form. For example ACB: Acropora branching coral), dead coral, dead coral with algae, sea weed, sponge, gravel, sand, rock, silt/clay and other organism living in the coral reef. (English et al 1997).

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Nội dung Text: Summary report of coral reefs in Spartly Islands in April 2005

Summary report of coral reefs in Spartly Islands in April 2005 Phan Kim Hoang Nhatrang Oceanography Institute
Materials and methods • The percentage of hard substratum cover will be using the Points Intercept method (Hodgson and Waddell,1996) on the 6 replicate of the transect 150 m total long • The data was collected including by hard coral, soft coral (to the specific of genus and living growth of form. For example ACB: Acropora branching coral), dead coral, dead coral with algae, sea weed, sponge, gravel, sand, rock, silt/clay and other organism living in the coral reef. (English et al 1997).
• Survey locations were recorded with a portable GPS unit (WGS84), at each location one transect was surveyed independently of reef slope site ca: 8 – 12m deep.
• Stony (hard) corals - species wherever possible (Veron and Pichon 1976, 1980, 1982, Veron, Pichon and Wijsman-Best 1977, Veron and Wallace 1984, Veron 1986, 1990, 2000, otherwise genus and growth form (e.g. Porites sp. of massive growth-form)
Results Name Trident Pugat S.W Pugat W Parola E Parola N. E Parola S.W Date 17.Apr.2005 18.Apr.2005 21.Apr.2005 20.Apr.2005 20.Apr.2005 21.Apr.2005 o o o o o o Lat. 11 50786 11 42628 11 43182 11 45081 11 45238 11 44714 o o o o o o Long. 114 64916 114 32514 114 33580 114 35895 114 36218 114 35152 Transect o o o o o o 180 180 210 240 240 240 orient Depth min 20 feet 25 feet 25 feet 25 feet 20 feet 20 feet Depth max 22 feet 30 feet 30 feet 30 feet 22 feet 22 feet No. Of transect 5 5 5 5 5 5
In total, some 164 reef-building coral species in 44 genera from 16 families recorded range among the 6 sites One coral species are new distribution records for Vietnam: Acropora fastigata and a further 1 species have been recently recorded from Vietnamese waters was Stylophora subseriata for the first time which species had found in Nhatrang bay in february 2005
The list of hard coral species in the survey sites • Name Trident Pugad Pugad Parola E Parola Parola S.W W N.E S.W No. of 55 75 61 68 52 79 species Total of species in 6 locations: 164 species
Some images of coral species Fungia scutaria Acropora cf. nana Acropora cf cuneata. Calastrea cf tumida
Stylophora modax
A new record Acropora fastigata Photo by Brian Stockwel
Fungia horiida
Isis hipputis
Stylophora subseriata