B 2(}8(}
!500
.mil
!lUU
_2
gOO
oUO
SOO
17
St. f{ II.m
~--~---------------------,Q
'I
8
~ ______ ~~~~~~~~72
o
lt70
21717
JUt7 L,
Iy yyl I
~1T 1"""1 m- Bnr
Fig. 3.15. Biomass of zooplankton (8, mgm - 3 ) in the daytime (1) and in the nocturnal
(2) samples collected up the north reef off Chuoong I. (Namsu I. Vietnam) . Positions of
stations, cf. profile below the graph. Biotopes: I living corals ; II rubble; III reef-fiat rocks;
IV coral sand; L distance from the shore, m; H depth
N
J(}(}t7 Bi
A
20flO
!
!OOO
217 22 241 17 {}J {}/i (}5 (}t!
flours
N
fJ
20.
7.f1l
J
IO{)
\
2
.fll
",...,..,--tl 15 18 20 22 2'1 0 (}2 (F! U5 (}8
/lours
Fig. 3.16A-B. Diurnal changes in the number (N, 1- 1) and biomass (8i, mgm- 3 ) of
zooplankton, caught by net tows in the lagoon of the atoll Takapoto (Tuakapoto) A Total
zooplankton ; B most common holoplankters Acartia fossae (1) and Sagitta oceania (2) .
(Modified from Renon 1977)