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Grasslands comprise a small part of the Chihuahuan Desert but are vital to the biological diversity of the ecoregion. Characteristic grasses of the Chihuahuan Desert are tobosa (Pleuraphis mutica) and black grama (Bouteloua eriopoda) but other common species include alakali sacaton (Sporobolus airoides), big alkali sacaton (S. wrightii), mesa dropseed (S. flexuosus), blue grama (B. gracilis), sideoats grama (B. curtipendula ), hairy grama (B. hirsuta), slender grama (B. filiformis), chino grama (B. brevista), spruce top grama (B. chondrosioides), bush muhly (Muhlenbergia porteri), several three awns (Aristida spp.), and fluff grass (Dasyochloa pulchela) (Johnson 1974, Dinerstein et al. 2000). Many of the sites discussed...
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This file represents the final version of an assessment of the extent, condition, and distribution of grassland types in Arizona as indicated by expert interviews and field verification. Coverage includes the state of Arizona, Southwestern portions of the state of New Mexico, and the Northern portion of Sonora, Mexico.
What are current conditions for important park natural resources? What are the critical data and knowledge gaps? What are some of the factors that are influencing park resource conditions? Natural Resource Condition Assessments (NRCAs) evaluate and report on the above for a subset of important natural resources in national park units (hereafter, parks). Focal study resources and indicators are selected on a park-by-park basis, guided by use of structured resource assessment and reporting frameworks. Considerations include park resource setting and enabling legislation (what are this park's most important natural resources?) and presently available data and expertise (what can be evaluated at this time?). In addition...
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ARS scientists publish results of their research projects in many formats. Listed below are the publications from research projects conducted at this location. Clicking on a publication title will take you to more information on the publication. Clicking on the reprint icon will take you to the publication reprint.
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Welcome to the Wind and Wildlife Landscape Assessment Tool (LAT), a collaboration organized by the American Wind Wildlife Institute (AWWI) and The Nature Conservancy (TNC). The LAT is designed as a landscape-level planning tool to identify sensitive wildlife habitat and areas that are likely to have low wildlife risk where wind energy development could be prioritized. Although the siting of individual wind energy projects will require on-the-ground surveys to verify data shown here, our hope is that this tool will provide stakeholders with information that facilitates the siting of wind energy in areas with minimal impacts to wildlife, as well as the development of conservation plans, monitoring plans and mitigation...
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The National Forest Management Act (NFMA) of 1976 requires every national forest or grassland managed by the U.S. Forest Service to develop and maintain a Land and Resource Management Plan (often referred to as a forest plan). The forest plan is the principle long-range guidance document for each forest or grassland, providing direction for project and activity decision making. Forest plans articulate goals and objectives, the kinds of uses that are suitable for areas of a national forest, management standards and guidelines that apply to different kinds of activities, and the designation of special areas like Research Natural Areas. Forest plans are strategic in nature and do not compel any action or authorize...
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A battery of questions was developed and applied to different stakeholders immersed in knowledge of the condition and the use of grazing of grasslands. One hundred people were surveyed amongst livestock producers (both from private ranches and from communal ejidos), and students and researchers at regional institutions involved in agricultural sciences in different states of Mexico: Coahuila, Durango, San Luis Potosí, and Jalisco. The objective of the survey was to determine aspects of stakeholders’ interpretation of the condition of grasslands in their region under conditions of extensive grazing, such as soil condition, harvest efficiency, vegetation condition, openness to community organizing of grazing, capacity...
We investigated experimental warming and simulated grazing (clipping) effects on rangeland quality, as indicated by vegetation production and nutritive quality, in winter-grazed meadows and summer-grazed shrublands on the Tibetan Plateau, a rangeland system experiencing climatic and pastoral land use changes. Warming decreased total aboveground net primary productivity (ANPP) by 40 g.m?�.yr?� at the meadow habitats and decreased palatable ANPP (total ANPP minus non-palatable forb ANPP) by 10 g.m?�.yr?� at both habitats. The decreased production of the medicinal forb Gentiana straminea and the increased production of the non-palatable forb Stellera chamaejasme with warming also reduced rangeland quality. At the shrubland...
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This is an aggregate dataset for the DRECP 12 km buffer region, depicting the geographic boundaries of Grazing Allotments within BLM managed public lands. An allotment is an area of land designated and managed for grazing of livestock (43 CFR 4100.0-5). An allotment may include private, state, and public lands under the jurisdiction of the Bureau of Land Management and/or other federal agencies. An allotment may be subdivided into pastures. Range improvement projects are not depicted within this dataset.
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This data has been collected by the U.S. Bureau of Land Management (BLM) in New Mexico at both the New Mexico State Office and the various field offices. Collection began in the 1980's using the BLM's ADS software to digitize data m the original case files. In the mid to late 1990's the data was converted from ADS to ArcInfo software. Collection continued into the 1990s and has been updated regularly until June 2000 when it was merged into a statewide coverage. In this edition, all updates were made in the area managed by the Carlsbad Field Office. Allotments not included in the first edition were added using on-screen digitizing from case file maps at various scales. Corrections were also made to many allotment...
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The RMU_UNIT feature class depicts the boundaries of the range allotments, general resource areas, and wild horse and burro territories on the Prescott National Forest and is part of the USFS Southwestern Region Core Data Project. This project is designed to generate and maintain 15 vertically integrated resource data layers which are standardized across the Southwestern Region. These 15 layers are derived from a Master Arc coverage which maintains vertical integration.The RMU_UNIT feature class depicts the boundaries of the range allotments, general resource areas, and wild horse and burro territories on the Prescott National Forest and is part of the USFS Southwestern Region Core Data Project. This project is...
Tags: grazing, range
The distribution of the greater sage-grouse (hereafter sage-grouse; Centrocercus urophasianus) has declined to 56% of its pre-settlement distribution (Schroeder et al. 2004) and abundance of males attending leks has decreased substantially over the past 50 years throughout the species’ range (Garton et al. 2011, Garton et al. 2015, WAFWA 2015). Livestock grazing is a common land use within sage-grouse habitat, and livestock grazing has been implicated by some experts as one of numerous factors contributing to sage-grouse population declines (Beck and Mitchell 2000, Schroeder et al. 2004). However, there are also numerous mechanisms by which livestock grazing might benefit sage-grouse (Beck and Mitchell 2000, Crawford...
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Historical disturbance regimes are often considered a critical element in maintaining native plant communities. However, the response of plant communities to disturbance may be fundamentally altered as a consequence of invasive plants, climate change, or prior disturbances. The appropriateness of historical disturbance patterns under modern conditions and the interactions among disturbances are issues that ecologists must address to protect and restore native plant communities. We evaluated the response of Artemisia tridentata ssp. wyomingensis (Beetle & A. Young) S.L. Welsh plant communities to their historical disturbance regime compared to other disturbance regimes. The historical disturbance regime of these...
INTERIOR COLUMBIA RIVER BASIN MANAGEMENT PROJECT; ADA, ADAMS, BANNOCK, BENEWAH, BINGHAM, BLAINE, BOISE, BONNER, BONNEVILLE, BOUNDARY, BUTTE, CAMAS, CANYON, CARIBOU, CASSIA, CLARK, CLEARWATER, CUSTER, ELMORE, FREMONT, GEM, GOODING, IDAHO, JEFFERSON, JEROME, KOOTENAI, LATAH, LEMHI, LEWIS, LINCOLN, MADISON, MINIDOKA, NEZ PERCE, ONEIDA, OWYHEE, PAYETTE, POWER, SHOSHONE, TETON, TWIN FALLS, VALLEY, AND WASHINGTON COUNTIES, IDAHO; DEER LODGE, FLATHEAD, GRANITE, LAKE, LEWIS AND CLARK, LINCOLN, MINERAL, MISSOULA, POWELL, RAVALLI, SANDERS, AND SILVER BOW COUNTIES, MONTANA; BAKER, CROOK, DESCHUTES, GILLIAM, GRANT, HARNEY, HOOD RIVER, JEFFERSON, KLAMATH, LAKE, MALHEUR, MORROW, SHERMAN, UMATILLA, UNION, WALLOWA, WASCO, AND WHEELER COUNTIES, OREGON; AND ADAMS, ASOTIN, BENTON, CHELAN, COLUMBIA, DOUGLAS, FERRY, FRANKLIN, GARFIELD, GRANT, KITTITAS, KLICKITAT, LINCOLN, OKANOGAN, PEND OREILLE, SPOKANE, STEVENS, WALLA WALLA, WHITMAN, AND YAKIMA COUNTIES, WASHINGTON (DRAFT SUPPLEMENT TO THE DRAFT ENVIRONME


map background search result map search result map Interaction of historical and nonhistorical disturbances maintains native plant communities BLM Grazing Allotments, DRECP Grazing Allotments on the Prescott National Forest Bureau of Land Management (BLM) Grazing Allotments in New Mexico Wind and Wildlife Assessment Tool Extent and Condition of Grasslands in Arizona, Northern Mexico, and Southwestern New Mexico Natural Resource Condition Assessments Status and Distribution of Chihuahuan Desert Grasslands in the United States and Mexico Southwest Watershed Research Publications United States Department of Agriculture Forest Service Southwestern Region Plan Revision Perceptions of the condition of semiarid grasslands under grazing regimes in Mexico/ Percepción de la condición del pastizal  bajo pastoreo, en México semiárido Interaction of historical and nonhistorical disturbances maintains native plant communities Grazing Allotments on the Prescott National Forest BLM Grazing Allotments, DRECP Bureau of Land Management (BLM) Grazing Allotments in New Mexico Extent and Condition of Grasslands in Arizona, Northern Mexico, and Southwestern New Mexico United States Department of Agriculture Forest Service Southwestern Region Plan Revision Status and Distribution of Chihuahuan Desert Grasslands in the United States and Mexico Perceptions of the condition of semiarid grasslands under grazing regimes in Mexico/ Percepción de la condición del pastizal  bajo pastoreo, en México semiárido Wind and Wildlife Assessment Tool Southwest Watershed Research Publications Natural Resource Condition Assessments