~
ro a.
"'
Q)
2
a;
0
MNji+@@1% .!!à- -
Mt.!::!.!.I -
1987
1988
B
A
Thalassiosira levanderi
Plagiogramma sp.
Chaetoceros sp.
Thalassiosira fallax
Leptocylindrus minimus
Chaetoceros sp.
Skeletonema sp.
Chaetoceros sp.
-
Diatomées
Dinoflagellés
1989
1990
1991
1987
1988
1989
1990
1991
Skeletonema costatum
Rhizosolenia delicatula
Chaetoceros curvisetum + C. debil
Rhizosolenia delicatula
autres
Phytoplancton : autres
10:r -
10
Q)
~ 10'
"' a.
g) 3
;; 10
~10+
100 Ll _ _ __.__.._
1987
1988
1989
1990
1991
106
MMMflfl IP·
~
(ij
a.
(/)
~
~
(ii
u
E
T
105 ~
104
10 3 -
102
1 0
•
1
1
0 ------1987
A
G
- 1988 ............
1989
N
F
................ ....---1990
1991
N
0
R
D