Populations with a large dispersal distance were more negatively affected as road mortality increased.
This effect is related to the larger dispersal of the mass with the increasing of the column height.
The results showed that the number of paths among the fragments of forest patches exhibited radical increases for larger dispersal distances.
Next consider the limiting cases of large dispersal distance or home-range size (or equivalently, very small reserves).
For example, carnivores, that have probably larger home ranges and dispersal abilities than most rodents [29] produce communities with consistently larger mean covariances, and the bats, also with large dispersal capacities, present a peak of large mean covariance.
This support the Baas-Becking hypothesis "everything is everywhere, but, the environment selects" [6], which assumes large dispersal potential and low extinction rate for microbes.
We pointed out that females dispersed more than males (i.e. they left their section of origin more frequently than males did) but had not necessarily a larger dispersal distance (i.e. distance covered during the study).
For all species life-histories examined, persistence requires considerably larger total fraction in reserves and/or larger individual reserves for a given home range than for an equivalent larval dispersal distance (Figures 3a c), particularly in the limit of large dispersal distances or home-ranges discussed above (along vertical axes in Figures. 3).
For example, for the long-lived species with 25% natural per recruit egg production remaining in fished areas, persistence for large dispersal distances occurs if greater than 13% of habitat is in reserves, whereas for large home ranges persistence requires at least 31% in reserves.
Lack of speciation at larger dispersal distances is due to the breakdown of local adaptation (Hendry et al. 2001).
