HEAR bibliography
People, Land & Water: The employee news magazine of the U.S. Department of the Interior
U.S. Geological Survey. (2000)

Invasive plants have created biological wastelands of more than 100 million acres in the United States. An area twice the size of Delaware is lost to invasive plants each year. Exotic animals and microbes add to this silent invasion that costs the nation more than a hundred billion dollars annually in lost resources and productivity and robs America of its biological heritage. Interior scientists and land managers are counter attacking, leveraging scarce resources in myriad partnerships to develop a coordinated national strategy to fight one of the most serious ecological battles of the 21st century. Articles include: Invasive Species Threaten America's Biological Heritage (Chip Groat, Director U.S. Geological Survey); Bugging Purple Loosestrife (Bureau of Reclamation); Cogongrass, Chinese Tallow Tree Invade Coastal Prairie Habitats (Gaye Farris, U.S. Geological Survey); Exotic Crayfish Prey on Rare Southwestern Fishes (U.S. Geological Survey); Exotic Mussels Expand Range (Amy J. Benson, U.S. Geological Survey); Hawaii: A Model for Addressing Invasive Species (Lloyd Loope & Joan Canfield, U.S. Geological Survey); Leafy Spurge Costs Great Plains $100 Million (Diane Larson, U.S. Geological Survey); Mapping Invasive Plants (Kathryn Thomas, U.S. Geological Survey); Non-native Grasses and Fire Create Double Jeopardy (Todd C. Esque and Cecil Schwalbe, U.S. Geological Survey); Pepperweed: A Growing Threat to Western Wildlife Habitat (David S. Gilmer, U.S. Geological Survey); Prescribed Fire and Grazing Impact Sierran Forests (Jon E. Keely, U.S. Geological Survey); Saltcedar, Russian-olive Invade Western Riparian Ecosystems (Jonathan Friedman, U.S. Geological Survey); Spring Brings Hope for Native Plants (Dick Hammerschlag, U.S. Geological Survey & Susan Salmons, National Park Service).