Table VIII-7. | The effects of dispersal. |
(a): | no dispersal |
(b): | occuring randomly |
(c): | as density-dependent reaction (carrying capacity) |
(d): | ) as a reaction to adverse conditions: adverse conditions: 1.5% emigr: emigration from 10% of the habitats 100% emigr: from 20% of the habitats 50% emigr: from 50% of the habitats |
For further explanation, see text, Table VIII-4 and Table VIII-6. |
dispersal | population sizes after 25 years (% of number of populaitons) | ||||||||
---|---|---|---|---|---|---|---|---|---|
0 | 101 | 102 | 103 | 104 | >104 | Rg | v.c.Rg | LR | |
(a) no dispersal | 79.00 | 7.00 | 4.00 | 4.00 | 5.00 | 1.00 | 0.974 | 0.621 | 1.385 |
(b) random dispersal | |||||||||
1.5 % emigr | 0.00 | 2.50 | 35.00 | 40.00 | 19.00 | 3.50 | 1.018 | 0.439 | 1.237 |
30.0 % emigr | 0.00 | 0.00 | 25.00 | 70.50 | 4.50 | 0.00 | 0.970 | 0.199 | 0.608 |
(c) carrying capacity | |||||||||
1.5 % emigr | 0.00 | 1.00 | 11.00 | 43.50 | 44.50 | 0.00 | 1.043 | 0.306 | 0.766 |
30.0 % emigr | 0.00 | 0.00 | 0.00 | 22.00 | 78.00 | 0.00 | 1.050 | 0.205 | 0.783 |
(d) adverse cond. | |||||||||
1.5 % emigr | 6.00 | 27.00 | 32.50 | 23.00 | 8.50 | 3.00 | 0.998 | 0.486 | 1.381 |
100.0 % emigr | 0.00 | 2.00 | 11.00 | 29.00 | 41.50 | 16.50 | 1.072 | 0.324 | 1.525 |
50.0 % emigr | 0.00 | 0.00 | 25.00 | 63.00 | 12.00 | 0.00 | 0.983 | 0.255 | 0.708 |