The United States Forest Service (USFS) is an agency within the U.S. Department of Agriculture that administers the nation's 154 national forests and 20 national grasslands covering 193 million acres (780,000 km2) of land. The major divisions of the agency are the Chief's Office, National Forest System, State and Private Forestry, Business Operations, as well as Research and Development. The agency manages about 25% of federal lands and is the sole major national land management agency not part of the U.S. Department of the Interior.
Pima County is a county in the south central region of the U.S. state of Arizona. As of the 2020 census, the population was 1,043,433, making it Arizona's second-most populous county. The county seat is Tucson, where most of the population is centered. The county is named after the Pima Native Americans, also known as Tohono O'odham, who are indigenous to this area.
The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that includes Arizona and New Mexico, along with adjacent portions of California, Colorado, Nevada, Oklahoma, Texas, and Utah. The largest cities by metropolitan area are Phoenix, Las Vegas, El Paso, Albuquerque, and Tucson. Before 1848, in the historical region of Santa Fe de Nuevo México as well as parts of Alta California and Coahuila y Tejas, settlement was almost non-existent outside of Nuevo México's Pueblos and Spanish or Mexican municipalities. Much of the area had been a part of New Spain and Mexico until the United States acquired the area through the Treaty of Guadalupe Hidalgo in 1848 and the smaller Gadsden Purchase in 1854.
Rangelands are grasslands, shrublands, woodlands, wetlands, and deserts that are grazed by domestic livestock or wild animals. Types of rangelands include tallgrass and shortgrass prairies, desert grasslands and shrublands, woodlands, savannas, chaparrals, steppes, and tundras. Rangelands do not include forests lacking grazable understory vegetation, barren desert, farmland, or land covered by solid rock, concrete and/or glaciers.
The Santa Catalina Mountains, commonly referred to as the Catalina Mountains or the Catalinas, are north and northeast of Tucson in Arizona, United States, on Tucson's north perimeter. The mountain range is the most prominent in the Tucson area, with the highest average elevation. The highest point in the Catalinas is Mount Lemmon at an elevation of 9,157 feet (2,791 m) above sea level and receives 18 inches (46 cm) of precipitation annually.
The Tortolita Mountains are a modest mountain range northwest of Tucson, Arizona, USA, at the northern boundaries of Oro Valley and Marana, two suburbs of Tucson. Peak elevation is 4,696 feet. Much of the mountain range is protected within the Tortolita Mountain Park, established in 1986 by Pima County, which plans to expand its territory.
Mount Wrightson is a 9,456-foot (2,882 m) peak in the Santa Rita Mountains within the Coronado National Forest, in southern Arizona, United States.
Madera Canyon is a canyon in the northwestern face of the Santa Rita Mountains, twenty-five miles southeast of Tucson, Arizona. As part of the Coronado National Forest, Madera Canyon has campsites, picnic areas, and miles of hiking trails. The canyon is also used as a resting place for migrating birds, and it is thus known as a premier birdwatching area. Madera Canyon was originally named White House Canyon, after a prominent white adobe house was built there in the late 19th century. The canyon was renamed sometime in the early 1900s, although some locals still use the original name.
The Kanab ambersnail, formerly classified as Oxyloma haydeni kanabense or Oxyloma kanabense, is a small, air-breathing land snail belonging to the family Succineidae, the ambersnails. This terrestrial pulmonate gastropod mollusc was previously considered a critically endangered subspecies or species. In 2013, a scientific investigations report by the United States Geological Survey concluded that the Kanab ambersnail is not a genetically distinct species. In June 2021, the Fish and Wildlife Service removed the Kanab ambersnail from the United States Fish and Wildlife Service list of endangered mammals and birds and classified it with other common ambersnails within the same taxa, officially negating its status as a distinct subspecies.
National Ecological Observatory Network (NEON) is a large facility program operated by Battelle Memorial Institute and funded by the National Science Foundation. In full operation since 2019, NEON gathers and provides long-term, standardized data on ecological responses of the biosphere to changes in land use and climate, and on feedback with the geosphere, hydrosphere, and atmosphere. NEON is a continental-scale research platform for understanding how and why our ecosystems are changing.
The 3,848 acres (6.013 sq mi) Landels-Hill Big Creek Reserve located in the southern region of Big Sur, California is owned by the University of California Natural Reserve System. It is located off State Route 1 in 50 miles (80 km) south of Monterey and adjacent to the Big Creek State Marine Reserve and Big Creek State Marine Conservation Area. It is open only for approved research or educational purposes.
An experimental forest, or experimental range, as defined by the United States Forest Service, is "an area administered ... 'to provide for the research necessary for the management of the land.'"
Helvetia is a ghost town in Pima County, Arizona, United States that was settled in 1891 and abandoned in the early 1920s. Helvetia is an ancient name for Switzerland. Today, only the Ray Mine and cemetery are visitable, as the rest of the town has been fenced off due to active mining operations.
The Pajarito Mountains is a small mountain range of western Santa Cruz County, Arizona, United States, that extend south into Sonora, Mexico. The range is adjacent the Atascosa Mountains at its north, with both ranges in the center of a north-south sequence of ranges called the Tumacacori Highlands. The Highlands have the Tumacacori Mountains at the north, and south of the U.S.-Mexico border, the Sierra La Esmeralda range. The Tumacacori Highlands are part of a regional conservancy study of "travel corridors" for cats, called Cuatro Gatos, Four Cats, for mountain lions, ocelot, bobcat, and jaguar.
August Ludwig Hormay (1907–1999) developed and applied the concept of the rest-rotation grazing management system in areas of the Western United States. Rest-rotation rangeland management system uses deferred grazing to manage increased plant reproduction and maintenance, while providing grazing lands for both livestock and wildlife. Gus Hormay's rest-rotation management system was developed to increase a healthy plant community, watershed, soil and wildlife habitat, while at the same time increasing livestock production. It has been in use in various forms since the mid-1960s as a rangeland management tool.
Holistic Management in agriculture is an approach to managing resources that was originally developed by Allan Savory for grazing management., Holistic Management has been likened to "a permaculture approach to rangeland management". Holistic Management is a registered trademark of Holistic Management International. It has faced criticism from many researchers who argue it is unable to provide the benefits claimed.
Continental is a populated place located about 25 mi (40 km) south of Tucson, in Pima County, Arizona, United States, near the town of Sahuarita and the retirement community of Green Valley. Once a center for cotton production, Continental is now nearly surrounded by large pecan orchards and Green Valley subdivisions. It is also the closest town to Madera Canyon, a premier birdwatching area and tourist attraction located in the Santa Rita Mountains.
Rangeland management is a natural science that centers around the study of rangelands and the "conservation and sustainable management [of Arid-Lands] for the benefit of current societies and future generations". Range management is defined by Holechek et al. as the "manipulation of rangeland components to obtain optimum combination of goods and services for society on a sustained basis".
The Central Plains Biosphere Reserve was a UNESCO Biosphere Reserve located in the western central Great Plains in north-central Colorado in the shortgrass prairie. The 6,210 hectares (24.0 sq mi) reserve encompasses the Central Plains Experimental Range (CPER) administered by the United States Department of Agriculture's Agricultural Research Service.
Heterelmis stephani was a rare species of aquatic beetle known by the common name Stephan's riffle beetle. It was endemic to Arizona in the United States, where it occurred in the Santa Rita Mountains before being declared presumed extinct. It was brown in color with small black dots on its wings.
