Table VIII-8. | Mean values and variation coefficients of field variables used in the simulations concering the effects of flight activities of whirligig beetles. Given are mean values and variation coefficients (between brackets) per month |
ten/fem = | number of tenerals per female |
surv f., surv m. = | survival chance of females and males respectively |
flight f., flight m. = | fraction of females resp. males that fly away |
I/E = | fraction of emigrants that immigrate elsewhere in the area. |
month | ten/fem | surv m. | surv f. | fliqht f. | fliqht m. | I/E |
---|---|---|---|---|---|---|
1 Apri1 | 9.0 (0.54) | 0.66 (0.04) | 0.60 (0.05) | 0.009 (1.40) | 0.015 (0.70) | 0.40 (0.70) |
2 May | 9.0 (0.54) | 0.66 (0.04) | 0.60 (0.05) | 0.05B (1.40) | 0.100 (0.70) | 0.40 (0.70) |
3 June | 9.0 (0.54) | 0.66 (0.04) | 0.60 (0.05) | 0.100 (1.40) | 0.160 (0.70) | 0.40 (0.70) |
4 July | 7.5 (0.32) | 0.57 (0.05) | 0.52 (0.06) | 0.100 (1.40) | 0.160 (0.70) | 0.40 (0.70) |
5 August | 5.0 (0.32) | 0.57 (0.05) | 0.52 (0.06) | 0.058 (1.40) | 0.100 (0.70) | 0.40 (0.70) |
6 September | - | 0.34 (0.09) | 0.32 (0.07) | 0.058 (1.40) | 0.100 (0.70) | 0.40 (0.70) |
7 October | - | 0.34 (0.09) | 0.32 (0.07) | 0.058 (1.40) | 0.100 (0.70) | 0.40 (0.70) |
8 winter | - | 0.32 (0.73) | 0.35 (0.82) | - | - | - |