Summary report of coral reefs in Spartly Islands in April 2005 potx

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
Lat. 11
o
50786 11
o
42628 11
o
43182 11
o
45081 11
o
45238 11
o
44714
Long. 114
o
64916 114
o
32514 114
o
33580 114
o

35895 114
o
36218 114
o
35152
Transect
orient
180
o
180
o
210
o
240
o
240
o
240
o

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
S.W
Pugad
W
Parola E Parola
N.E
Parola
S.W
No. of
species
55 75 61 68 52 79
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