Distribution of Sage-Grouse in North America

Author:

Schroeder Michael A.1,Aldridge Cameron L.2,Apa Anthony D.3,Bohne Joseph R.4,Braun Clait E.5,Bunnell S. Dwight6,Connelly John W.7,Deibert Pat A.8,Gardner Scott C.9,Hilliard Mark A.10,Kobriger Gerald D.11,McAdam Susan M.12,McCarthy Clinton W.13,McCarthy John J.14,Mitchell Dean L.15,Rickerson Eric V.16,Stiver San J.17

Affiliation:

1. Washington Department of Fish and Wildlife, P.O. Box 1077, Bridgeport, WA 98813

2. Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada

3. Colorado Division of Wildlife, 711 Independent Avenue, Grand Junction, CO 81505

4. Wyoming Game and Fish Department, P.O. Box 67, Jackson, WY 83001

5. Grouse Inc., 5572 North Ventana Vista Road, Tucson, AZ 85750

6. National Sage-Grouse Conservation Planning Framework Team, 88 West, 350 South, Midway, UT 84049

7. Idaho Department of Fish and Game, 1345 Barton Road, Pocatello, ID 83204

8. U.S. Fish and Wildlife Service, 4000 Airport Parkway, Cheyenne, WY 82001

9. California Department of Fish and Game, 1812 Ninth Street, Sacramento, CA 95814

10. U.S. Bureau of Land Management, 1849 C Street NW, Washington, DC 20240

11. North Dakota Game and Fish Department, 225 30th Avenue SW, Dickinson, ND 58601

12. Saskatchewan Environment, 350 Cheadle Street West, Swift Current, SK S9H 4G3, Canada

13. U.S. Forest Service, 5048 S. Shawnee, Ogden, UT 84403

14. Montana Fish, Wildlife and Parks, P.O. Box 200701, Helena, MT 59601

15. Utah Division of Wildlife Resources, 1594 W N. Temple, Salt Lake City, UT 84114

16. Oregon Department of Fish and Wildlife, 3406 Cherry Ave. NE, Salem, OR 97303

17. Nevada Division of Wildlife, 1100 Valley Road, Reno, NV 89512

Abstract

Abstract We revised distribution maps of potential presettlement habitat and current populations for Greater Sage-Grouse (Centrocercus urophasianus) and Gunnison Sage- Grouse (C. minimus) in North America. The revised map of potential presettlement habitat included some areas omitted from previously published maps such as the San Luis Valley of Colorado and Jackson area of Wyoming. Areas excluded from the revised maps were those dominated by barren, alpine, and forest habitats. The resulting presettlement distribution of potential habitat for Greater Sage-Grouse encompassed 1 200 483 km2, with the species' current range 668 412 km2. The distribution of potential Gunnison Sage-Grouse habitat encompassed 46 521 km2, with the current range 4787 km2. The dramatic differences between the potential presettlement and current distributions appear related to habitat alteration and degradation, including the adverse effects of cultivation, fragmentation, reduction of sagebrush and native herbaceous cover, development, introduction and expansion of invasive plant species, encroachment by trees, and issues related to livestock grazing. Distribución de Centrocercus spp. en América del Norte Resumen. Revisamos los mapas de distribución potencial precolombino y de poblaciones actuales de Centrocerus urophasianus y C. minimus en América del Norte. El mapa modificado de hábitat potencial precolombino incluyó algunas áreas omitidas de mapas anteriormente publicados, como el Valle San Luis de Colorado y el área de Jackson, Wyoming. Las áreas excluídas de los mapas modificados fueron las dominadas por hábitats forestales, alpinos y estériles. La distribución precolombina resultante para C. urophasianus abarcó 1 200 483 km2, con un territorio actual de 668 412 km2. La distribución de habitat potencial para C. minimus abarcó 46 521 km2, con un territorio actual de 4787 km2. Estos contrastes tan marcados parecen estar relacionados con la modificación y degradación del hábitat, incluyendo los efectos nocivos de la agricultura, la fragmentación de hábitat, la disminución de Artemisia spp. y otras coberturas herbáceas nativas, el desarollo, la introducción y la expansión de especies de plantas invasoras, la invasión de árboles y cuestiones relacionadas con pastoreo de ganado.

Publisher

Oxford University Press (OUP)

Subject

Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

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