return to your last point in text by using the [previous] in the left upper corner of your browser

Table VIII-4.	Simulations of dispersal activity during 25 years in an area with 20 habitats, with asynchronously changing conditions of survival and reproduction A year is divided into two seasons, a reproductive season and a non-reproductive one during which the tenerals enter the population (to reproduce in the next year). Variation coefficient used with all mean values = 0.4. Survival chance from dispersal (I/E) = 0.8. See text for further explanation
Q1, Q2 =	survival in first and second season respectively
ten =	number of tenerals per adult
d1, d2 =	percentage of emigrating individuals in first and in the second generation respectively
0, 101,..,>104 =	mean number of populations after 25 years with sizes of 0, 1-101,101-102..,>104
Rg =	geometric mean of net reproduction values = (Pn/P0)/n), if P0 = starting size (= 20*500=10000), and n = last year the species was present in the area (n<26)
v.c.Rg =	variation coefficient of Rg
LR =	log(H) - log(L), if H and L are the highest and the lowest population size observed, respectively
B =	simulation of species B (no dispersal)
M =	simulation of species M (with dispersal)

1a.   Q1=0.05, Q2=0.20, ten=5.00
species	emigration		population size
	d1	d2	0	101	102	103	104	>104	Rg	v.c.Rg	LR
B	-	-	9.5	4.5	2.5	2.0	1.5	-	0.958	0.311	1.012
M	3	-	1.0	7.5	7.0	3.0	1.5	-	0.959	0.299	0.939
M	50	-	-	8.5	9.0	2.0	0.5	-	0.898	0.154	1.222
M	-	3	-	0.5	8.5	9.5	2.0	-	0.987	0.246	0.723
M	-	50	-	-	5.5	9.0	5.0	0.5	1.016	0.130	0.356
M	3	3	0	0	3	12	5	0	1.009	0.289	0.615
M	3	50	0	0	0	12	1	1	1.002	0.121	0.183
M	50	3	0	2	14	4	0	0	0.909	0.172	1.097
M	0	50	0	0	8	11	1	0	0.923	0.127	0.866
1b.   Q1=0.05, Q2=0.50, ten=2.00
species	emigration		population size
	d1	d2	0	101	102	103	104	>104	Rg	v.c.Rg	LR
B	-	-	9.5	4.0	3.0	1.5	2.0	-	0.973	0.308	0.906
M	3	-	-	4.5	8.0	5.0	2.5	-	0.986	0.269	0.770
M	50	-	-	1.0	8.010.0	1.0	-	0.952	0.145	0.667
M	-	3	1.0	9.5	7.5	2.0	-	0.979	0.259	0.766
M	-	50	19.5	0.5	-	-	-	-	0.687	0.080	4.000
M	3	3	0	0	4	11	5	0	1.002	0.297	0.807
M	3	50	20	0	0	0	0	0	0.653	0.130	4.000
M	50	3	0	0	9	9	2	0	0.942	0.165	0.753
M	0	50	20	0	0	0	0	0	0.582	0.140	4.000
2a.   Q1=0.50, Q2=0.20, ten=4.55
species	emigration		population size
	d1	d2	0	101	102	103	104	>104	Rg	v.c.Rg	LR
B	-	-	7.0	5.5	4.0	1.5	2.0	-	0.965	0.287	0.929
M	3	-	-	6.0	7.0	5.5	1.5	-	0.972	0.254	0.801
M	50	-	-	10.0	9.5	0.5	-	-	0.899	0.146	1.528
M	-	3	-	-	4.5	9.0	6.5	-	1.009	0.217	0.629
M	-	50	-	-	-	-	20.0	1.244	0.128	2.368
M	3	3	0	0	1	11	1	1	1.022	0.250	0.740
H	3	50	0	0	0	0	0	20	1.206	0.119	2.029
M	50	3	0	3	14	3	0	0	0.892	0.162	1.284
M	0	50	0	0	0	0	17	3	1.083	0.128	0.850
2b.   Q1=0.50, Q2=0.50, ten=1.50
species	emigration		population size
	d1	d2	0	101	102	103	104	>104	Rg	v.c.Rg	LR
B	-	-	6.0	5.5	5.0	1.5	2.0	-	0.964	0.270	0.926
M	3	-	-	6.5	8.5	4.0	1.0	-	0.958	0.224	0.806
M	50	-	-	7.5	12.5	-	-	-	0.893	0.154	1.564
M	-	3	-	1.0	8.5	8.0	2.5	-	0.975	0.211	0.710
M	-	50	-	17.0	2.5	0.5	-	0.916	0.122	1.958
M	3	3	0	0	1	10	3	0	0.976	0.231	0.685
M	3	50	0	17	3	0	0	0	0.805	0.109	2.357
M	50	3	0	11	9	0	0	0	0.849	0.148	1.775
M	50	50	20	0	0	0	0	0	0.662	0.134	4.000

return to your last point in text by using the [previous] in the left upper corner of your browser