Migratory monarch butterfly populations have fallen into a tailspin in recent years. Scientists fear that in a classic case of good intentions gone awry, efforts to help the beleaguered butterflies may be inadvertently making matters worse by changing their behavior.
The San Francisco Bay Delta watershed is enormous. It has also been enormously altered. Volunteer, non-profit and government efforts have all done a great deal to restore the watershed. But according to Derek Hitchcock, an ecologist with The Watershed Project, “Cultural healing is needed before watershed healing.”
After more than 150 years on the California landscape, eucalyptus trees have iconic status for some Californians. But the stately trees may not only disrupt the native ecology, but seem to have evolved special adaptations that allow them to thrive after intense fires.