262 Chapter 7 Chaetognaths
day
night
+
X
o
•
o •
o •
o .
o e
o
0 .1 -1
1-10
10-100
100-1000
>1000
75' 30' W
73' 30'W
PACIFIC AREA
F o
0 1
10
T 5
13
15
o
·100
-200
-300
f
5 -400
J:
1a.
·500
w
o
-€00
-100
-€00
F
-900 o 10 10' 10 3 10' 10'
Ind. 100 m·'
E
J:
1a.
w
o
Depth range of occurrence : O - 400 m
Population core : 150 - 200
Temperature (T): 8.20 - 9.80 OC
Oxygen: 348.4 - 437.2 J.Jmol dm· 3
Chl fluorescence (F): 0.04 - 0.39
PAT AGONIA
71' 30' w
CENTRAL AREA
F o
0 1
. 1
10
T 5
11
13
15
o
-100
-200
TIERRA DEL FUEGO
69' 30'W
F o
T 5
o
ATLANTIC AREA
.0 1
.1
11
1
1
r
1
54" 45' s
67' 30' W
10
15
J:
-50
ll
a.
-300
w
o
1
-400
! F
T
-500 o 10 10 2 10 3 10' 10'
Ind. 100 m-3
Depth range of occurrence: O - 500 m
Population core: 150 - 200
Temperature (T): 6.70 - 9 .01 o c
Oxygen: 346.1 - 407.3 J.Jmol dm· 3
Chl fluorescence (F): 0.05 - 0.27
-
T ! F
-100
1
O
10
10 2 10'
10'
10 5
Ind . 100 m· 3
Depth range of occurrence: O - 80 m
Population c o re: 60 - 80 m
Temperature (T): 8.68 - 9.02 o c
Oxygen: 390.4 - 410.9 J.Jmol dm· 3
Chl fluorescence (F): 0.16 - 0.44
Fig. 7.4.4. Sagitta tasmanica. Distribution in the Straits of Magellan in February-March 1991