About the bristlecone pine, with a particular focus on the White Mountains of Inyo and Mono Counties.

Extensive catalog of environmental information for the bioregion, including watersheds, biodiversity, maps, photos and satellite imagery, reports.

Includes photographs and information on wildlife of the region.

An assessment of the Sierra Nevada ecoregion which was requested by Congress in 1992. This website contains the full report, and also offers options for purchasing a CD-ROM or hard copy.