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) plotted against the aggregation level of habitat 
(
) for situation A (a) and situation B (b).
The relationship between 
and 
was tested by a GLM with Poisson distributed errors (dotted line). Other parameters are for a: 
, 
(
and 
) and 
; for b: 
, 
(
and 
) and 
. The lattice environment was used.
