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Keyword: southwestern United States

Climate variability, carbon, drought and fire, in arid-semi-arid ecosystems

Science Spotlights Posted on: August 01, 2019
Using the best available science and tools, we can project the effects of today’s management actions on tomorrow’s non-forest vegetation assemblage, carbon, and productivity while considering changing climates. 

Birds of Southwestern grasslands: Status, conservation, and management

Publications Posted on: May 12, 2016
In the Southwestern United States, the grassland avifauna is collectively composed of a mixture of species found primarily in desert grasslands, shortgrass steppe, wet meadows, and alpine tundra (as used here, desert grasslands incorporate both arid grasslands and desert shrub grasslands). Of these habitats, desert grasslands and shortgrass steppe are the most extensive and support the greatest number of grassland bird species.

Biodiversity, functional processes, and the ecological consequences of fragmentation in Southwestern grasslands

Publications Posted on: May 12, 2016
Concern over accelerating extinction rates and loss of species diversity on a global scale was the subject of E.O. Wilson's seminal volume Biodiversity (Wilson 1988). This work essentially transformed the term "biodiversity" into a household word as a short-hand for species diversity--or more simply, the full array and variety of living organisms on Earth.

Connecting mountain islands and desert seas: Biodiversity and management of the Madrean Archipelago II

Publications Posted on: May 12, 2016
The Madrean Archipelago, or Sky Island, region of the southwestern United States and northern Mexico is recognized for its great biological diversity and natural beauty. This conference brought together scientists, managers, and other interested parties to share their knowledge about the region and to identify needs and possible solutions for existing and emerging problems.

Large native ungulates

Publications Posted on: May 12, 2016
This chapter addresses the large native ungulates (American bison (Bos bison), elk (Cervus elaphus), white-tailed deer (Odocoileus virginianus), mule deer (Odocoileus hemionus), and pronghorn (Antilocapra americana) of the grasslands. The information presented includes historical background, description of the species’ biology and ecology, and management in relation to domestic animals.

Assessment of grassland ecosystem conditions in the Southwestern United States. Vol. 1

Publications Posted on: May 12, 2016
This report is volume 1 of a two-volume ecological assessment of grassland ecosystems in the Southwestern United States. Broadscale assessments are syntheses of current scientific knowledge, including a description of uncertainties and assumptions, to provide a characterization and comprehensive description of ecological, social, and economic components within an assessment area.

Assessment of grassland ecosystem conditions in the Southwestern United States: Wildlife and fish. Vol. 2

Publications Posted on: May 12, 2016
This report is volume 2 of a two-volume ecological assessment of grassland ecosystems in the Southwestern United States. Broad-scale assessments are syntheses of current scientific knowledge, including a description of uncertainties and assumptions, to provide a characterization and comprehensive description of ecological, social, and economic components within an assessment area.

Fishes of Southwestern Grasslands: Ecology, Conservation, and Management

Publications Posted on: May 12, 2016
The world possesses an amazing number and variety of freshwater fishes. Fish, the most diverse taxon on Earth, exhibit more species than all vertebrate taxa combined (Hocutt and Wiley 1986, May 1988, Nelson 1994, Matthews 1998) (table 5-1). Worldwide, an estimated 28,500 fish species are in 57 orders and 482 families (Nelson 1994).

Small Mammals, Reptiles, and Amphibians

Publications Posted on: May 12, 2016
This chapter focuses on small mammals, reptiles, and amphibians that inhabit the grasslands within the Southwestern Region of the USDA Forest Service. The chapter is not intended to be an all inclusive list of species, but rather to address the species that play important roles in grassland ecosystems and that often are associated with the management of grasslands. Among the larger rodents discussed here are prairie dogs and pocket gophers.

Southwestern Grassland Ecology

Publications Posted on: May 12, 2016
This chapter provides a brief overview, and selected in-depth coverage, of the factors and processes that have formed, and continue to shape, our Southwestern grasslands. In general, this chapter looks at how distributions of grasslands are regulated by soils and climate, and modified by disturbance (natural and/or anthropogenic).

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