Skip to Main Content
Criterion 1: Conservation of biological diversity - Indicator 6: The number of forest dependent speciesAuthor(s): Curtis H. Flather; Taylor H. Ricketts; Carolyn Hull Sieg; Michael S. Knowles; John P. Fay; Jason McNees
Source: In: Darr, David R., coordinator. Data Report: A Supplement to the National Report on Sustainable Forests -- 2003. FS-766A. Washington, DC: USDA Forest Service, Research & Development. Online: http://www.fs.fed.us/research/sustain/
Publication Series: Other
Station: Rocky Mountain Research Station
PDF: View PDF (679.65 KB)
DescriptionThis indicator monitors the number of native species that are associated with forest habitats. Because one of the more general sign of ecosystem stress is a reduction in the variety of organisms inhabiting a given locale, species counts are often used in assessing ecosystem wellbeing. Data on the distribution of 689 tree and 1,486 terrestrial animal species associated with forest habitats (including 227 mammals, 417 birds, 176 amphibians, 191 reptiles, and 475 butterflies) were analyzed. Species richness (number of species) is highest in the Southeast and in the arid ecoregions of the Southwest. Since the mid-1970s, trends in forest bird richness have been mixed. Ecoregions where forest bird richness has increased the greatest are found in the West and include the Great Basin, northern Rocky Mountains, northern mixed grasslands, and southwestern deserts. Declining forest bird richness has primarily occurred in the East, with notable areas of decline in the Mississippi lowland forests, the southeastern coastal plain, northern New England, southern and eastern Great Lake forests, and central tallgrass prairie. Because monitoring species richness over large geographic areas is logistically difficult, we lack systematic inventories that permit the estimation of species richness over time for most taxonomic groups.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationFlather, Curtis H.; Ricketts, Taylor H.; Sieg, Carolyn Hull; Knowles, Michael S.; Fay, John P.; McNees, Jason. 2003. Criterion 1: Conservation of biological diversity - Indicator 6: The number of forest dependent species. In: Darr, David R., coordinator. Data Report: A Supplement to the National Report on Sustainable Forests -- 2003. FS-766A. Washington, DC: USDA Forest Service, Research & Development. Online: http://www.fs.fed.us/research/sustain/
Keywordsspecies richness, bird richness trends, richness hotspots, sustainability indicators, sustainable forest management
- Land-cover change and avian diversity in the conterminous United States
- Criterion 1: Conservation of biological diversity - Indicator 9: Population levels of representative species from diverse habitats monitored across their range
- Criterion 1: Conservation of biological diversity - Indicator 7: The status (threatened, rare, vulnerable, endangered, or extinct) of forest dependent species at risk of not maintaining viable breeding populations, as determined by legislation or scientific assessment
XML: View XML