Table
3.19. Zooplankton composition in waters over and in the vicinity of the Heron I.
reefs (data by the author)
Time of sampling;
No. of
Depth,
Fractions a
Biotopes b
Taxa c
Biomass,
tide phase
stations
m
mgm- 3
8
0.6
D70%, H 30%
r.c.
Decl. Mysl. Cop.
72
22-24h, 25 Sept;
9
1.0
D 80, H
20%
fl.p.r.
Decl. Gam.
Mys. Pol. Cop.
253
Middle ebb
10
1.5
D 100%
l.p.r.
Decl. Gam. Mys. Pol.
358
11
1.5
D 100%
fl.p.r.
Decl. Gam.
Mys. Pol.
312
12
0.7
D
100%
r.c.
Decl. Harp.
1150
7
26
H90%
o.s.
Cop. Ch.
490
19-21 h, 5 Oct;
8
2.0
H90%
r.c.
Cop.
Si.
240
High tide
9
3.2
H70%, D70%
fl.p.r.
Cop. Decl.
116
11
3.5
H50%, D50%
fl.p.r.
Cop. Ch. Decl. Mys.
266
1
1.2
H
100%
I.f.
Cop. Ch. Ap.
400
2
1.0
H>90%
I.f.
Ap. Si. Cop.
223
20-22h,9 Oct;
3
1.0
H>90%
I.f.
Cop. Ap.
500
Coming tide
4
1.5
H 80%, D 20%
I.f.
Ap. Cop.
138
5
2.0
H>90
H
Cop. Ap.
124
6
25.0
H 100%
o.s.
Ch. Cop. Ap.
835
a
Fractions: H - holoplankton; D - demersal zooplankton.
bBiotopes: o.s. - surrounding water outside off the reef; r.c. - reef crest; fl.p.r. - patch reefs on the reef flat; l.p.r. - patch reefs on outskirts
of lagoon; L. -
lagoon, I.f. -
leeward flat.
cCop - copepods; Harp - harpacticoids; Ap - appendicularians; Ch - chaetonaths;
Si - siphonophores; Decl - decapod larvae; Gam -
gammarids; Mysl - mysid larvae; Mys - mysides; Pol - polychaetes.
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