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Table VIII-6. Simulation of exchange between habitats under different spatial conditions: the influence of the number of habitats, the variability between habitats and the distance between habitats upon the population-dynamic effects of dispersal.
The table gives the mean results of 10 simulations per situation.
(a):20 habitats. exchange between habitats random. variation coefficient v.c.=0.5
(b): as (a). but only 5 habitats
(c):as (a). but exchange between habitats related to the distances between them
(d):as (a). but values for reproduction. survival and dispersal synchronized between the habitats (see text)
(e):as (a). low variability v.c= 0.3 (see text)
dispersal:
- =no dispersal activity
1.5 =1.5% emigration. I/E = 0.5
30 =30% emigration. I/E = 0.70.
For further explanation. see Table VIII-4.
Numbers of populations per size group are given as percentages.
dispersalpopulation sizes after 25 years
 101102103104>104Rgv.c.RgLR
(a)  20 habitats
-79.007.004.004.005.001.000.9740.6211.385
1.50.002.5035.0040.0019.003.501.0180.4391.237
30.00.000.0025.0070.504.500.000.9700.1990.608
(b)   5 habitats
-90.000.004.004.002.000.000.6950.7112.436
1.516.0022.0030.0024.008.000.000.9010.5631.597
30.00.0022.0026.0050.002.000.000.9210.3650.966
(c)   distance
-80.008.754.582.502.921.670.9500.6392.314
1.50.007.5028.7538.7516.258.751.0470.4562.902
30.00.0019.5068.0012.500.000.000.8980.2531.202
(d)   synchronized
-100.000.000.000.000.000.000.2601.4354.997
1.5100.000.000.000.000.000.000.2931.5095.203
30.0100.000.000.000.000.000.000.3081.4935.207
(e)   low variation
-5.508.5020.5033.0018.5014.001.1090.2991.399
1.50.000.000.0024.5061.5014.001.0970.2071.222
30.00.000.004.5066.0029.500.001.0100.1660.412


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