The Autecology of Eudiaptomus cf drieschi (Poppe & Mrazek 1895 ...

Total E. drieschi biomass ( mg / m 3 )
120
100
80
60
40
20
0
1994
Daily
P / B = 0.33
50
45
40
35
30
25
20
15
10
5
0
Net biomass Production (mg / m 3 /
d)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Total E. drieschi biomass ( mg / m 3 )
600
500
400
300
200
100
0
1996
Daily
P / B = 0.22
140
120
100
80
60
40
20
0
Net biomass Production (mg / m 3 /
d)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
450
80
Total E. drieschi biomass ( mg / m 3 )
400
350
300
250
200
150
100
50
1997
Daily
P / B = 0.20
70
60
50
40
30
20
10
Net biomass Production (mg / m 3 / d)
Total E. drieschi biomass ( mg / m 3 )
0
180
160
140
120
100
80
60
40
20
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1998
Daily
P / B = 0.12
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
40
35
30
25
20
15
10
5
0
0
Net biomass Production (mg / m 3 / d)
Figure 9: Seasonal Productivity / Biomass ratios (P/B) for E. drieschi in
L. Kinneret for the years 1994, 1996-1998.