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

26
Rate of Change
0.300
0.200
0.100
0.000
-0.100
-0.200
-0.300
a).
b).
Instantaneous Birth rate
4.0
3.0
2.0
1.0
0.0
Jan-96
Apr-96
Jul-96
Oct-96
Jan-97
Apr-97
Jul-97
Oct-97
Jan-98
Apr-98
Jul-98
Oct-98
Jan-96
Apr-96
Jul-96
Oct-96
Jan-97
Apr-97
Jul-97
r = ln(N t - lnN 0 ) / t
Oct-97
Jan-98
Apr-98
Jul-98
Oct-98
Instantaneous Death Rate
3.0
d = b - r
1.5
0.0
Jan-96
Mar-96
May-96
Jul-96
Sep-96
Nov-96
Jan-97
Mar-97
May-97
Jul-97
Sep-97
Nov-97
Jan-98
Mar-98
May-98
Jul-98
Sep-98
Nov-98
b = ln (1 + B)
c).
Figure 8: a) Rate of change (r), b) Instantaneous death rate (d), c) Instantaneous
birth rate (b) for E. drieschi population in Lake Kinneret.