Table 4.1.
Total number of bacteria (N) in reef bottom sediments, their biomass and production, calculated per I g of dry sediment
IJ:l
~
n
Location
Reefal zones
Sediments, sites
N,
Biomass
Production
(b
..,
109 g-l
j;;'
~
mgC (B) C
org , %
~gCg-lday-l
(P)
PIB
0
0..
a::
Coconut I.a
Reef flat
Coral sand among living corals
3.6
0.44
5.1
40
0.1
n'
..,
Hawaii
Coarse coral sand near reef edge
2.8
0.30
3.3
13
0.04
0
~
Detrital "regenerative" sediment
5.6
0.48
2.5
16
0.03
riQ
~
Lagoonal shallows
Silty-detrital coral sand among dead corals
9.7
1.82
8.0
14
0.05
(1)
Coral sand
0.3
0.008
0.3
0.8
0.1
S·
Fine coral sand among seaweeds
3.1
0.20
1.6
14
0.07
:;0
(1)
Majuro atoll," Windward flat
Coral sand
1.7
0.066
1.0
12
0.18
(1)
...,
Marshalls
Lagoonal coastal reef Coral sand among corals
1.6
0.040
1.5
7
0.18
IJ:l
;a
Lagoonal patch reefs Fine mucous coral sand under living corals 3.5
0.18
3.0
35
0.20
0
Fine detrital sand among seaweed
3.8
0.36
6.0
71
0.20
3
Detrital "regenerative" sediment
7.2
0.36
1.2
98
0.27
(/J
(1)
Davis reef,b
Reef flat
Coral sand
1.5
0.10
2.6
14
0.14
0..
GBR
Patch reefs
Coral sand
1.2
0.084
1.4
28
0.33
S·
(1)
Lagoon
Silted coral sand
1.8
0.133
3.4
24
0.18
:a
Lizard
I.e
Reef flat
Coral sand among rear-living corals
0.07
3.5
40
0.57
V>
GBR
Coral sand within the seagrass bed
0.12
2.8
40
0.33
a
After Sorokin (1978b).
b After Y.A. Hansen et at. (1987).
e After Moriarty et at. (1985b, 1990).
N
'D