land preservation and ecological management firm located in New Jersey

provides increased access to data and information on America's biological resources

dedicated to the conservation of fish, wildlife, plants, and the habitat on which they depend by creating partnerships between public and private sectors and investing in sustainable use of natural resources

dedicated to ending commercial logging on US National Forests and all federal public lands

provides comprehensive information on emerging and ongoing droughts, and enhances the nation's drought preparedness

U.S. Department of the Interior cares for national parks, a network of nearly 400 natural, cultural and recreational sites across the nation

vigilantly monitors US National Parks for signs of deterioration, seeks to prevent damage to particular parks and demands that Congress preserve park resources for future generations.

fights to safeguard the scenic beauty, wildlife, and historical and cultural treasures of America's park system by battling abuse and neglect, education, promoting restoration, and fostering better management

the U.S. Fish and Wildlife Service produces information on the characteristics, extent, and status of America's wetlands and deepwater habitats

seeks harmony between people and the land by helping people conserve, maintain, and improve our natural resources and environment

protecting, conserving, and restoring Maine's environment

photos and links to species information for birds, butterflies, and mammals

the US National Park Service's natural resource website; includes information on the biology, geology, water and air in National Parks

dedicated to conserving grasslands and associated grassland biome ecosystems in the American tropics

taking a step toward a sustainable future by providing access to resources, opportunities for networking, and inspiration on the topic of sustainable communities - focusing on the Twin Cities, Minnesota

helps build a healthy and productive future for the Northern Forest in the United States by building public consensus to conserve and enhance its cultural, civic, economic, and ecological wealth

provides the scientific information needed to conserve and manage the nation's biological resources, with an emphasis on the species and ecosystems of the nation's interior

a group from Michigan's Upper Peninsula that seeks to preserve and restore native forests of the North Woods, and address root causes of forest decline

the US Environmental Protection Agency works to protect America's water resources

seeks to aggressively protect and restore Oregon's wild lands, wildlife, and waters as an enduring legacy

conducts scientific research in the fields of ecology, conservation biology and natural resource management in the Pacific region

works in the US for permanent protection for wildlands, improved management of public lands, protect wildlife in national parks, and reduce wood consumption and damaging forestry practices

dedicated to promoting and protecting the Virginia Piedmont's rural economy, natural resources, history and beauty

works to protect wildlife and restore the quality of California’s environment through legislative and administrative action

a single source of standardized information about plants focusing on vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories