You are here

Keyword: chaparral

Chapter 7: Changing values of riparian ecosystems

Publications Posted on: June 12, 2009
Riparian ecosystems in the Central Arizona Highlands, and throughout the Southwest in general, provided the necessary water for humans, livestock, and agricultural crops during settlement by Europeans in the late 1800s. Other resources available in these moist environments included wildlife and fish, livestock and wildlife forage, and shade. Trees were often used for fuel, poles, and building materials.

Chapter 6: Creating a basis for watershed management in high elevation forests

Publications Posted on: June 12, 2009
Higher mountains and plateaus in the Central Arizona Highlands generally support southwestern mixed conifer forests, associated aspen and spruce-fir forests, and a small acreage of grasslands interspersed among the forested areas.

Chapter 5: Interdisciplinary land use along the Mogollon Rim

Publications Posted on: June 12, 2009
The amount of water stored in the Salt River Project reservoirs during the middle 1950s was low and, as a consequence, apprehension arose among some residents of the Salt River Valley that a serious water shortage would soon occur. Groundwater supplies in the Valley were also being rapidly depleted, and pumping costs were steadily rising.

Chapter 4: Managing chaparral in Yavapai County

Publications Posted on: June 12, 2009
Yavapai County in central Arizona supports extensive stands of chaparral in the Bradshaw Mountains, Mingus Mountain, and the Santa Maria Range. Chaparral occupies about 400,300 acres of the Prescott National Forest (Anderson 1986). These chaparral communities provide a wide range of benefits including watershed protection, grazing for wildlife and domestic animals, recreational opportunities, and wildlife habitat.

Chapter 3: Providing water and forage in the Salt-Verde River Basin

Publications Posted on: June 12, 2009
The Salt-Verde River Basin, covering about 8.4 million acres of the Central Arizona Highlands, supplies most of the water for the Salt River Valley in addition to providing other multiple use values. Mixed conifer, ponderosa pine forests, and a portion of the pinyon-juniper woodlands predominantly occupy the higher-elevation watersheds.

Chapter 2: Beginning of water studies in the Central Arizona Highlands

Publications Posted on: June 12, 2009
Water has been recognized as an important resource in central Arizona and has affected populations occupying the Salt River Valley for centuries. Water related activities have been documented since about 200 before the common era, when Hohokam Indians settled the Valley and constructed canals to irrigate their fields.

Chapter 1: Central Arizona Highlands

Publications Posted on: June 12, 2009
The Central Arizona Highlands are a distinct biogeographic, climatic, and physiographic province that forms a diverse ecotone between the larger Colorado Plateau to the north and the Sonoran Desert ecoregions to the south (figure 1). The Highlands coincide approximately with the Arizona Transition Zone identified by ecologists, geologists and others.

Fire and birds in the southwestern United States

Publications Posted on: July 26, 2006
Fire is an important ecological force in many southwestern ecosystems, but frequencies, sizes, and intensities of fire have been altered historically by grazing, logging, exotic vegetation, and suppression. Prescribed burning should be applied widely, but under experimental conditions that facilitate studying its impacts on birds and other components of biodiversity.

Use of ryegrass seeding as an emergency revegetation measure in chaparral ecosystems

Publications Posted on: June 13, 2006
Fire is a common occurrence in the California chaparral. Aside from brush removal through combustion, physical changes also take place in the soil during fire. These changes lead to accelerated erosion rates which begin almost immediately and continue through the next 5 to 10 years (Rowe and others 1954; Wells and Brown 1982).