Table
4.2. Contents of organic carbon (Corg), total number of bacteria (N, 10 9
g-l), their biomass and production per day (P) in coral sands of
reefs, depending on their cover of living corals
Features of reefs
Location
Corg
N
B
P
mgCg- 1
%
ofCorg Ilg
C g- 1
P/B
Dense cover of living
Scott reefs (Indian Ocean)
0.80 4.20
0.63
7.9
43
0.Q7
corals
Bili-Bili I., New Guinea
0.65 2.20 0.54
8.3
39
0.Q7
Barrier reef off Panarora Louisiada (rich coral growth)
0.45 2.80 0.39
8.6
45
0.12
Lizard I., GBR"
0.48
0.34
7.1
92
0.27
Average coral cover
Conflict atoll, Louisiada
0.27 0.81 0.074
2.7
12
0.16
Funafuti atoll, Tuvalu
0.81 0.31
0.080
1.0
12
0.15
Poor coral growth
Lizard I., GBR, bare reef flat"
0.43
0.12
2.8
30
0.25
Vekai atoll, Lau archipelago
0.37 0.37 0.056
1.5
7
0.12
Fringing reef off the Pentacost I., New Hebrides
0.16 0.37 0.Q18
1.1
0.9
0.05
Degrading algal reefs,
Katafang atoll, Lau
0.66 0.41 0.026
0.4
3
0.12
living corals absent
Reef absent, rare corals Lopevi I., active volcano, New Hebrides
0.06 0.04 0.0015
0.25
0.2
0.13
on lava rocks
"Data by Moriarty et at. (1985b); Other data by Sorokin (1986b).
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