Linking Isolated Habitats Said to Help Biodiversity

Around the world, once-giant ecosystems have been cut up into tiny fragments. Islands of habitat have been left on the land that can be wiped by a single storm.

Ecologists have said for years that fragments of this kind do better when they're reconnected by thin corridors -- strips of trees that lead rare plants and animals to other biodiversity "hotspots." Now there's evidence that this argument is true.