SBSC Fact Sheets
USGS Southwest Biological Science Center scientists produce fact sheets that summarize decades of research.
Related
Select the links below to access GCMRC Fact Sheets:
Filter Total Items: 27
Understanding the Habitat Needs of the Declining Western Yellow-Billed Cuckoo Understanding the Habitat Needs of the Declining Western Yellow-Billed Cuckoo
The western yellow-billed cuckoo, once common along the streams and rivers of the American West, is now a candidate for protection under the Endangered Species Act. Most of the remaining breeding pairs are found in Arizona, California, and New Mexico. Research to understand the cuckoos' habitat needs by U.S. Geological Survey (USGS) and Northern Arizona University scientists has shown...
Authors
Matthew J. Johnson
A neotropical migrant bird's dilemma: where to stop for a good meal A neotropical migrant bird's dilemma: where to stop for a good meal
To learn how migrating birds determine where to stop and find food, scientists from the U.S. Geological Survey, Northern Arizona University, and The University of Arizona studied the behavior of 28 species of neotropical migrant songbirds - warblers, flycatchers, tanagers, and vireos - along the lower Colorado River from 2001 to 2004. They found that, like interstate travelers greeted by
Authors
Joseph J. Fontaine, Charles van Riper
Status and Trends of Resources Below Glen Canyon Dam Update - 2009 Status and Trends of Resources Below Glen Canyon Dam Update - 2009
The protection of resources found in Glen Canyon National Recreation Area and Grand Canyon National Park, Arizona, emerged as a significant public concern in the decades following the completion of Glen Canyon Dam in 1963. The dam, which lies about 15 miles upstream from the park, altered the Colorado River's flow, temperature, and sediment-carrying capacity, resulting over time in beach...
Authors
John F. Hamill
Status and trends of the Grand Canyon population of Humpback Chub Status and trends of the Grand Canyon population of Humpback Chub
The Colorado River Basin supports one of the most distinctive fish communities in North America, including the federally endangered humpback chub (Gila cypha). One of only six remaining populations of this fish is found in Grand Canyon, Arizona. U.S. Geological Survey scientists and their cooperators are responsible for monitoring the Grand Canyon population. Analysis of recently...
Authors
Matthew E. Andersen
Grand Canyon Humpback Chub Population Improving Grand Canyon Humpback Chub Population Improving
The humpback chub (Gila cypha) is a long-lived, freshwater fish found only in the Colorado River Basin. Physical adaptations-large adult body size, large predorsal hump, and small eyes-appear to have helped humpback chub evolve in the historically turbulent Colorado River. A variety of factors, including habitat alterations and the introduction of nonnative fishes, likely prompted the...
Authors
Matthew E. Andersen
Research Furthers Conservation of Grand Canyon Sandbars Research Furthers Conservation of Grand Canyon Sandbars
Grand Canyon National Park lies approximately 25 km (15 mi) down-river from Glen Canyon Dam, which was built on the Colorado River just south of the Arizona-Utah border in Glen Canyon National Recreation Area. Before the dam began to regulate the Colorado River in 1963, the river carried such large quantities of red sediment, for which the Southwest is famous, that the Spanish named the...
Authors
Theodore S. Melis, David J. Topping, David M. Rubin, Scott Wright
Central Mojave Vegetation Database Central Mojave Vegetation Database
No abstract available.
Authors
Kathryn A. Thomas, Janet Franklin, Todd Keeler-Wolf, Peter Stine
Climatic fluctuations, drought, and flow of the Colorado River Climatic fluctuations, drought, and flow of the Colorado River
No abstract available.
Authors
Robert H. Webb, Gregory J. McCabe, Richard Hereford, Christopher D. Wilkowske
Precipitation history of the Colorado Plateau region, 1900-2000 Precipitation history of the Colorado Plateau region, 1900-2000
The Colorado Plateau covers 210,000 km 2 (130,000 mi 2) of Utah, Colorado, New Mexico, and Arizona. Management of this region?s resources requires an understanding of how its climate has varied in the past and may change in the near future. Recent studies by U.S. Geological Survey (USGS) and other scientists suggest that the region may become drier for the next 2 to 3 decades, in a...
Authors
Richard Hereford, Robert H. Webb, Scott Graham
Underwater microscope system Underwater microscope system
No abstract available.
Authors
Hank Chezar
Monitoring of coarse sediment inputs to the Colorado River In Grand Canyon Monitoring of coarse sediment inputs to the Colorado River In Grand Canyon
No abstract available.
Authors
Robert H. Webb, Peter G. Griffiths
Sediment delivery by ungaged tributaries of the Colorado River in Grand Canyon Sediment delivery by ungaged tributaries of the Colorado River in Grand Canyon
No abstract available.
Authors
Robert H. Webb, Peter G. Griffiths
Related
Select the links below to access GCMRC Fact Sheets:
Filter Total Items: 27
Understanding the Habitat Needs of the Declining Western Yellow-Billed Cuckoo Understanding the Habitat Needs of the Declining Western Yellow-Billed Cuckoo
The western yellow-billed cuckoo, once common along the streams and rivers of the American West, is now a candidate for protection under the Endangered Species Act. Most of the remaining breeding pairs are found in Arizona, California, and New Mexico. Research to understand the cuckoos' habitat needs by U.S. Geological Survey (USGS) and Northern Arizona University scientists has shown...
Authors
Matthew J. Johnson
A neotropical migrant bird's dilemma: where to stop for a good meal A neotropical migrant bird's dilemma: where to stop for a good meal
To learn how migrating birds determine where to stop and find food, scientists from the U.S. Geological Survey, Northern Arizona University, and The University of Arizona studied the behavior of 28 species of neotropical migrant songbirds - warblers, flycatchers, tanagers, and vireos - along the lower Colorado River from 2001 to 2004. They found that, like interstate travelers greeted by
Authors
Joseph J. Fontaine, Charles van Riper
Status and Trends of Resources Below Glen Canyon Dam Update - 2009 Status and Trends of Resources Below Glen Canyon Dam Update - 2009
The protection of resources found in Glen Canyon National Recreation Area and Grand Canyon National Park, Arizona, emerged as a significant public concern in the decades following the completion of Glen Canyon Dam in 1963. The dam, which lies about 15 miles upstream from the park, altered the Colorado River's flow, temperature, and sediment-carrying capacity, resulting over time in beach...
Authors
John F. Hamill
Status and trends of the Grand Canyon population of Humpback Chub Status and trends of the Grand Canyon population of Humpback Chub
The Colorado River Basin supports one of the most distinctive fish communities in North America, including the federally endangered humpback chub (Gila cypha). One of only six remaining populations of this fish is found in Grand Canyon, Arizona. U.S. Geological Survey scientists and their cooperators are responsible for monitoring the Grand Canyon population. Analysis of recently...
Authors
Matthew E. Andersen
Grand Canyon Humpback Chub Population Improving Grand Canyon Humpback Chub Population Improving
The humpback chub (Gila cypha) is a long-lived, freshwater fish found only in the Colorado River Basin. Physical adaptations-large adult body size, large predorsal hump, and small eyes-appear to have helped humpback chub evolve in the historically turbulent Colorado River. A variety of factors, including habitat alterations and the introduction of nonnative fishes, likely prompted the...
Authors
Matthew E. Andersen
Research Furthers Conservation of Grand Canyon Sandbars Research Furthers Conservation of Grand Canyon Sandbars
Grand Canyon National Park lies approximately 25 km (15 mi) down-river from Glen Canyon Dam, which was built on the Colorado River just south of the Arizona-Utah border in Glen Canyon National Recreation Area. Before the dam began to regulate the Colorado River in 1963, the river carried such large quantities of red sediment, for which the Southwest is famous, that the Spanish named the...
Authors
Theodore S. Melis, David J. Topping, David M. Rubin, Scott Wright
Central Mojave Vegetation Database Central Mojave Vegetation Database
No abstract available.
Authors
Kathryn A. Thomas, Janet Franklin, Todd Keeler-Wolf, Peter Stine
Climatic fluctuations, drought, and flow of the Colorado River Climatic fluctuations, drought, and flow of the Colorado River
No abstract available.
Authors
Robert H. Webb, Gregory J. McCabe, Richard Hereford, Christopher D. Wilkowske
Precipitation history of the Colorado Plateau region, 1900-2000 Precipitation history of the Colorado Plateau region, 1900-2000
The Colorado Plateau covers 210,000 km 2 (130,000 mi 2) of Utah, Colorado, New Mexico, and Arizona. Management of this region?s resources requires an understanding of how its climate has varied in the past and may change in the near future. Recent studies by U.S. Geological Survey (USGS) and other scientists suggest that the region may become drier for the next 2 to 3 decades, in a...
Authors
Richard Hereford, Robert H. Webb, Scott Graham
Underwater microscope system Underwater microscope system
No abstract available.
Authors
Hank Chezar
Monitoring of coarse sediment inputs to the Colorado River In Grand Canyon Monitoring of coarse sediment inputs to the Colorado River In Grand Canyon
No abstract available.
Authors
Robert H. Webb, Peter G. Griffiths
Sediment delivery by ungaged tributaries of the Colorado River in Grand Canyon Sediment delivery by ungaged tributaries of the Colorado River in Grand Canyon
No abstract available.
Authors
Robert H. Webb, Peter G. Griffiths