Now one of the disturbing features of the pattern of defoliation which is not obvious at first from just recording the total amount of acreage defoliated, is the spatial pattern in which these areas are now distributed. They form a patchwork.
And you can clearly see on an aerial photograph the fact that these occur in long strips intermixed with strips of relatively good forest and not so much damage by spraying. What this does in effect is dissect a forest into small little islands of appropriate vegetation for animals. Forming little islands or pockets of habitat.
The problem is, each one of these little islands or pockets may be insufficient to really support a population of animals, particularly those that require large home ranges. Animals such as primates, some of the forest birds, etc. So in fact if you added up all the total area of good habitat remaining, it may not be sufficient to support the population of animals because of this dissected nature of it.
In fact, these animals, canopy animals, don't cross grassland to go to another piece of forest. They may as well be islands, and unoccupiable.