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Roundtail Chub
The roundtail chub (''Gila robusta'') is a species of freshwater ray-finned fish belonging to the family Leuciscidae, which includes the daces, chubs, Eurasian minnows and related species. This species is found in southwestern North America. It is native to the Colorado River drainage basin, including the Gila River and other tributaries, and in several other rivers. It is part of the "''robusta'' complex", which includes the ''Gila robusta robusta'', ''G.r. grahami'', and ''G.r. seminuda''. Evolution A partial articulated fossil skeleton of a ''Gila'' chub, tentatively assigned to ''Gila robusta'', has been recovered from the middle Pliocene-aged Bidahochi Formation of Arizona. This suggests that the Colorado River had already developed its iconic swift-river habitat by this point in time. Description The body of the roundtail chub is significantly larger forward of the dorsal fin, and posteriorly it is tapered towards the tail. The forehead area is concave. The mouth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bidahochi Formation
The Pliocene to Late Neogene Bidahochi Formation lies at an elevation of about to at the southeast of the Colorado Plateau; the deposits are from Hopi Lake (also called Bidahochi Lake), and the deposits extend southwards to the region at the north perimeter of the White Mountains (Arizona), White Mountains of central-east Arizona. Bidahochi Lake is thought to have been a single "large lake, or several shallow, and ephemeral ones." Various fossil types are found; also bird fossil trackway, trackways. The Bidahochi Formation contains basalt flows that form an erosional protecting unit above the highly erodable Chinle Formation. The Bidahochi Formation extends approximately 112 miles north–south, or north-northwest by south-southeast, a length approximately equivalent to today's Great Salt Lake of Utah. The Bidahochi is possibly the only extensive nonvolcanic Neogene formation of the Colorado Plateau. It has been studied by geologists for clues to conditions on the plateau dur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species Act
The Endangered Species Act of 1973 (ESA; 16 U.S.C. § 1531 et seq.) is the primary law in the United States for protecting and conserving imperiled species. Designed to protect critically imperiled species from extinction as a "consequence of economic growth and development untempered by adequate concern and conservation", the ESA was signed into law by President Presidency of Richard Nixon#Environmental policy, Richard Nixon on December 28, 1973. The Supreme Court of the United States described it as "the most comprehensive legislation for the preservation of endangered species enacted by any nation"."Tennessee Valley Authority v. Hill" 437 U.S. 153 (1978) Retrieved 24 November 2015. The purposes of the ESA are two-fold: to prevent extinction and to recover species to the point wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Fish And Wildlife Service
The United States Fish and Wildlife Service (USFWS or FWS) is a List of federal agencies in the United States, U.S. federal government agency within the United States Department of the Interior which oversees the management of fish, wildlife, and natural habitats in the United States. The mission of the agency is "working with others to conserve, protect, and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people." Among the responsibilities of the USFWS are enforcing federal wildlife laws; protecting endangered species; managing migratory birds; restoring nationally significant fisheries; conserving and restoring wildlife habitats, such as wetlands; helping foreign governments in international conservation efforts; and distributing money to fish and wildlife agencies of U.S. states through the Wildlife Sport Fish and Restoration Program. The vast majority of fish and wildlife habitats are on U.S. state, state or private land not co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, invasive species, and climate change. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona Game And Fish Department
The Arizona Game and Fish Department is a state agency of Arizona, headquartered in Phoenix. The agency is tasked with conserving, enhancing, and restoring Arizona's diverse wildlife resources and habitats through protection and management programs. Operations The Arizona Game and Fish Department is funded primarily by revenues generated through the sale of hunting and fishing licenses, tags, and stamps, as well as the discretionary purchases of hunters and anglers; it does not receive tax funding through the Arizona State General Fund. Wildlife conservation The Arizona Game and Fish Department has developed a "Comprehensive Wildlife Conservation Strategy" (CWCS)—a 10-year vision for managing Arizona’s fish, wildlife and natural habitats, input and partnerships with various agency cooperators, sportsman and recreational groups, conservation organizations, special interest groups, Native American tribes, county and municipal governments, and the general public. Watchable wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt River (Arizona)
The Salt River (Spanish language, Spanish: , O'odham language, O'odham [Pima]: , Yavapai language, Yavapai: or , Maricopa language: Va Shly'ay) is a river in Gila County, Arizona, Gila and Maricopa County, Arizona, Maricopa counties in Arizona, United States, that is the largest tributary of the Gila River. The river is about 200 miles (320 km) long.Calculated with Google Maps and Google Earth Its drainage basin covers about 13,700 square miles (35,000 km2). The longest of the Salt River's many tributaries is the 195-mile (314 km) Verde River. The Salt's headwaters tributaries, the Black River and East Fork, increase the river's total length to about 300 miles (480 km). The name Salt River comes from the river's course over large salt deposits shortly after the merging of the White and Black Rivers. Variant names According to the Geographic Names Information System, the Salt River has also been known as: * Assumption * Black River * Blau Fluss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as '' Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' ( Modern French '). The word has been modified to "crayfish" by association with "fish" ( French language">Modern French '). The word has been modified to "crayfish" by association with "fish" ( American variant "crawfish" is similarly derived. Some kinds of crayfish are known lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rio Yaqui
The Yaqui River (Río Yaqui in Spanish) (Hiak Vatwe in the Yaqui or Yoreme language) is a river in the state of Sonora in northwestern Mexico. It was formerly known as the Rio del Norte. Being the largest river system in the state of Sonora, the Yaqui river is used for irrigation, especially in the Valle del Yaqui. The Rio Yaqui originates in the Sierra Madre Occidental at the junction of the Rio Bavispe and the Rio Aros at Lat. 29.529887 Long. −109.228377. It is approximately 320 km (200 mi) in length, and flows south and southwest into the Gulf of California near the city of Obregon. Its course is interrupted by several reservoirs like Plutarco Elías Calles (El Novillo), Lázaro Cárdenas (Angostura), or Álvaro Obregón (El Oviáchic, Lake Ouiachic), which provides the water resource for the intensively irrigated region of Ciudad Obregón. Human history As early as the 6th century AD, native inhabitants known as the Yoeme or Yaqui were living in f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verde River
The Verde River ( Yavapai: Haka'he:la) is a major tributary of the Salt River in the U.S. state of Arizona. It is about long and carries a mean flow of at its mouth. It is one of the largest perennial streams in Arizona. Description The river begins below the dam at Sullivan Lake, fed by Big Chino Wash and Williamson Valley Wash in Yavapai County. The Verde flows freely for through private, state, tribal and United States Forest Service lands, specifically the Prescott National Forest, Coconino National Forest and Tonto National Forest, before encountering the first of two dams that make Horseshoe Lake and Bartlett Lake. The cities of Camp Verde, Clarkdale and Cottonwood are the main population centers along the river. The Verde River and the Salt River converge on the Salt River Pima-Maricopa Indian Community. The Salt River flows into the Gila River west of Phoenix. In 1984, the United States Congress designated of the Verde River as Wild and Scenic through the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Maria River (Arizona)
The Santa Maria River is an intermittent stream located in western Arizona. It is a primary tributary of the Bill Williams River and one of the main sources of inflow for Alamo Lake. The river forms a portion of the boundary between Mohave and La Paz counties. Course The Santa Maria River is formed by the confluence of the Sycamore and Kirkland Creeks, about east of the community of Bagdad. From the confluence, the river flows in a generally southwesterly direction through the rugged Arrastra Mountain Wilderness area ( Poachie Range– Black Mountains). The river accepts a number of smaller, intermittent streams throughout its length. The river joins the Big Sandy River to form the Bill Williams River just upstream of Alamo Lake. During periods of heavy rainfall, the lake may extend beyond the confluence point, during which period the Santa Maria empties directly into the lake rather than joining the Big Sandy River. The total length of the river is approximately , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Sandy River (Arizona)
The Big Sandy River is both an intermittent and perennial stream in Mohave and La Paz counties in northwestern Arizona in the United States. It begins where Cottonwood Wash and Trout Creek converge in the Hualapai Indian Reservation east of U.S. Route 93 then flows past Wikieup south of Kingman. The Big Sandy River then passes the Signal Ghost Town Site, meanders through the Arrastra Mountain Wilderness, and joins the Santa Maria River in Southern Mohave County to form the Bill Williams River. The Bill Williams River then empties into Alamo Lake State Park. The Big Sandy River is long. The Big Sandy drainage basin covers approximately in Mohave, La Paz, and Yavapai counties. The Hualapai Mountains are west of the river, and the Aquarius and Mohon Mountains lie to the east and southeast, the Juniper Mountains further east, and the Peacock Mountains and Cottonwood Mountains to the north. Hualapai Peak at is the highest point in the basin. The river flows through the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
