Insects, pollen, seeds travel wildlife corridors

In an unusual test of a conservation strategy called wildlife corridors, strips of habitat boosted insect movement, plant pollination, and seed dispersal among patches of the same ecosystem.

CONNECTIONS. A corridor (shown linking patches in this aerial view) encouraged movement of butterflies, pollen, and seeds. Forest Service

Theory predicts that adding such corridors enhances the benefits of otherwise isolated preserves, says Joshua Tewksbury of the University of Washington in Seattle.