Charles Van Riper, III, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 135
Influence of Riparian Tree Phenology on Lower Colorado River Spring-Migrating Birds: Implications of Flower Cueing Influence of Riparian Tree Phenology on Lower Colorado River Spring-Migrating Birds: Implications of Flower Cueing
Executive Summary Neotropical migrant birds make choices about which habitats are most likely to provide successful foraging locations during migration, but little is known about how these birds recognize and process environmental clues that indicate the presence of prey species. Aspects of tree phenology, notably flowering of trees along the lower Colorado River corridor, coincide with...
Authors
Laura J. McGrath, Charles van Riper
Control of Tamarix in the western United States: Implications for water salvage, wildlife use, and riparian restoration Control of Tamarix in the western United States: Implications for water salvage, wildlife use, and riparian restoration
Non-native shrub species in the genus Tamarix (saltcedar, tamarisk) have colonized hundreds of thousands of hectares of floodplains, reservoir margins, and other wetlands in western North America. Many resource managers seek to reduce saltcedar abundance and control its spread to increase the flow of water in streams that might otherwise be lost to evapotranspiration, to restore native...
Authors
P.B. Shafroth, J.R. Cleverly, T.L. Dudley, J.P. Taylor, Charles van Riper, E.P. Weeks, J.N. Stuart
Geography of spring landbird migration through riparian habitats in southwestern North America Geography of spring landbird migration through riparian habitats in southwestern North America
Migration stopover resources, particularly riparian habitats, are critically important to landbirds migrating across the arid southwestern region of North America. To explore the effects of species biogeography and habitat affinity on spring migration patterns, we synthesized existing bird abundance and capture data collected in riparian habitats of the borderlands region of the U.S. and...
Authors
S. K. Skagen, J.F. Kelly, Charles van Riper, R.L. Hutto, D.M. Finch, D.J. Krueper, Cynthia Melcher
The Colorado Plateau II: biophysical, socioeconomic, and cultural research The Colorado Plateau II: biophysical, socioeconomic, and cultural research
The publication of The Colorado Plateau: Cultural, Biological, and Physical Research in 2004 marked a timely summation of current research in the Four Corners states. This new volume, derived from the seventh Biennial Conference on the Colorado Plateau in 2003, complements the previous book by focusing on the integration of science into resource management issues. The 32 chapters range...
Authors
David J. Mattson
Brown-headed Cowbird parasitism of the Black-throated Sparrow in central Arizona Brown-headed Cowbird parasitism of the Black-throated Sparrow in central Arizona
From 1994-1996 we investigated effects of Brown-headed Cowbird (Molothrus ater) parasitism on Black-throated Sparrow (Amphispiza bilineata) nesting success in the Verde Valley of central Arizona. Of 56 Black-throated Sparrow nests, 52% were parasitized. Black-throated Sparrows appear to respond to natural parasitism by accepting the cowbird egg, deserting the nest, or burying the cowbird...
Authors
M. J. Johnson, Charles van Riper
Diets of insectivorous birds along the Colorado River in Grand Canyon, Arizona Diets of insectivorous birds along the Colorado River in Grand Canyon, Arizona
We examined diets of six insectivorous bird species (n = 202 individuals) from two vegetation zones along the Colorado River in Grand Canyon National Park, Arizona, 1994. All bird species consumed similar quantities of caterpillars and beetles, but use of other prey taxa varied. Non-native leafhoppers (Opsius stactagolus) specific to non-native tamarisk (Tamarix chinensis) substantially...
Authors
H.K. Yard, Charles van Riper, B.T. Brown, M.J. Kearsley
Science and Products
Filter Total Items: 135
Influence of Riparian Tree Phenology on Lower Colorado River Spring-Migrating Birds: Implications of Flower Cueing Influence of Riparian Tree Phenology on Lower Colorado River Spring-Migrating Birds: Implications of Flower Cueing
Executive Summary Neotropical migrant birds make choices about which habitats are most likely to provide successful foraging locations during migration, but little is known about how these birds recognize and process environmental clues that indicate the presence of prey species. Aspects of tree phenology, notably flowering of trees along the lower Colorado River corridor, coincide with...
Authors
Laura J. McGrath, Charles van Riper
Control of Tamarix in the western United States: Implications for water salvage, wildlife use, and riparian restoration Control of Tamarix in the western United States: Implications for water salvage, wildlife use, and riparian restoration
Non-native shrub species in the genus Tamarix (saltcedar, tamarisk) have colonized hundreds of thousands of hectares of floodplains, reservoir margins, and other wetlands in western North America. Many resource managers seek to reduce saltcedar abundance and control its spread to increase the flow of water in streams that might otherwise be lost to evapotranspiration, to restore native...
Authors
P.B. Shafroth, J.R. Cleverly, T.L. Dudley, J.P. Taylor, Charles van Riper, E.P. Weeks, J.N. Stuart
Geography of spring landbird migration through riparian habitats in southwestern North America Geography of spring landbird migration through riparian habitats in southwestern North America
Migration stopover resources, particularly riparian habitats, are critically important to landbirds migrating across the arid southwestern region of North America. To explore the effects of species biogeography and habitat affinity on spring migration patterns, we synthesized existing bird abundance and capture data collected in riparian habitats of the borderlands region of the U.S. and...
Authors
S. K. Skagen, J.F. Kelly, Charles van Riper, R.L. Hutto, D.M. Finch, D.J. Krueper, Cynthia Melcher
The Colorado Plateau II: biophysical, socioeconomic, and cultural research The Colorado Plateau II: biophysical, socioeconomic, and cultural research
The publication of The Colorado Plateau: Cultural, Biological, and Physical Research in 2004 marked a timely summation of current research in the Four Corners states. This new volume, derived from the seventh Biennial Conference on the Colorado Plateau in 2003, complements the previous book by focusing on the integration of science into resource management issues. The 32 chapters range...
Authors
David J. Mattson
Brown-headed Cowbird parasitism of the Black-throated Sparrow in central Arizona Brown-headed Cowbird parasitism of the Black-throated Sparrow in central Arizona
From 1994-1996 we investigated effects of Brown-headed Cowbird (Molothrus ater) parasitism on Black-throated Sparrow (Amphispiza bilineata) nesting success in the Verde Valley of central Arizona. Of 56 Black-throated Sparrow nests, 52% were parasitized. Black-throated Sparrows appear to respond to natural parasitism by accepting the cowbird egg, deserting the nest, or burying the cowbird...
Authors
M. J. Johnson, Charles van Riper
Diets of insectivorous birds along the Colorado River in Grand Canyon, Arizona Diets of insectivorous birds along the Colorado River in Grand Canyon, Arizona
We examined diets of six insectivorous bird species (n = 202 individuals) from two vegetation zones along the Colorado River in Grand Canyon National Park, Arizona, 1994. All bird species consumed similar quantities of caterpillars and beetles, but use of other prey taxa varied. Non-native leafhoppers (Opsius stactagolus) specific to non-native tamarisk (Tamarix chinensis) substantially...
Authors
H.K. Yard, Charles van Riper, B.T. Brown, M.J. Kearsley