For specialist species, what factor can outweigh the fragment's size or isolation?

Answer

The quality of the remaining patch.

The comparison of monkey species shows a critical nuance that for specialists, patch quality—like canopy density or food availability—can be more important than the fragment's size or how isolated it is from neighbors.

For specialist species, what factor can outweigh the fragment's size or isolation?
Ecologyhabitatbiodiversityfragmentationeffect