Table 31. Shannon Weiner index of species diversity for scleractinian corals and hydrocorals
yed within video transects at a depth of 30 m, SW Wall Reef, Isla Desecheo
during 2004
surve
.
Video
No. of Species
No. Colonies
Species Diversity
Station Transect
(H')
30 m
1
8
11
1.97
2
8
26
1.82
3
7
10
1.74
4
6
11
1.64
5
6
21
1.67
6
6
24
1.26
MEAN
6.8
17.1
1.68
Abiotic categories, mostly comprised by fine and coarse coralline sand with some coral
rubble presented an average substrate cover of 25.5 % (range: 17.6 – 38.2 %) at a
depth of 30 meters on the SW Wall reef. Evidently, there is substantial transport of
from the upper terrace of Puerto Canoas reef down this slope (Plate 18). A cor
sand deposit has accumulated at the base of the wall (40 – 45 m depth) separating th
wall reef from a deep reef system established at depths between 46 – 70 meters. The
relatively high substrate cover by sand is probably an important factor limiting the
recruitment of coral colonies on the wall.
sand
alline
e
Plate 18
109
yed within video transects at a depth of 30 m, SW Wall Reef, Isla Desecheo
during 2004
surve
.
Video
No. of Species
No. Colonies
Species Diversity
Station Transect
(H')
30 m
1
8
11
1.97
2
8
26
1.82
3
7
10
1.74
4
6
11
1.64
5
6
21
1.67
6
6
24
1.26
MEAN
6.8
17.1
1.68
Abiotic categories, mostly comprised by fine and coarse coralline sand with some coral
rubble presented an average substrate cover of 25.5 % (range: 17.6 – 38.2 %) at a
depth of 30 meters on the SW Wall reef. Evidently, there is substantial transport of
from the upper terrace of Puerto Canoas reef down this slope (Plate 18). A cor
sand deposit has accumulated at the base of the wall (40 – 45 m depth) separating th
wall reef from a deep reef system established at depths between 46 – 70 meters. The
relatively high substrate cover by sand is probably an important factor limiting the
recruitment of coral colonies on the wall.
sand
alline
e
Plate 18
109