Wylie Barrow, Jr., Ph.D. (Former Employee)
Science and Products
Filter Total Items: 56
Nonlinear dynamics in ecosystem response to climatic change: Case studies and policy implications
Many biological, hydrological, and geological processes are interactively linked in ecosystems. These ecological phenomena normally vary within bounded ranges, but rapid, nonlinear changes to markedly different conditions can be triggered by even small differences if threshold values are exceeded. Intrinsic and extrinsic ecological thresholds can lead to effects that cascade among systems, preclud
Authors
Virginia R. Burkett, Douglas A. Wilcox, Robert Stottlemyer, Wylie Barrow, Dan Fagre, Jill Baron, Jeff Price, Jennifer L. Nielsen, Craig D. Allen, David L. Peterson, Greg Ruggerone, Thomas Doyle
Shorebird habitat availability assessment of agricultural fields using a digital aerial video system
Field and wetland conditions in the rice prairies of Louisiana and Texas are highly dynamic habitats. Rice prairies are important habitat for many species of migratory birds, including shorebirds, wading birds, and waterfowl. Ground sampling a variety of fields to assess habitat availability is very labor intensive, and accessibility to private lands makes statistical habitat sampling almost impos
Authors
Clinton W. Jeske, Scott A. Wilson, Paul C. Chadwick, Wylie Barrow
Advancing migratory bird conservation and management by using radar: An interagency collaboration
Migratory birds face many changes to the landscapes they traverse and the habitats they use. Wind turbines and communications towers, which pose hazards to birds and bats in flight, are being erected or proposed across the United States and offshore. Human activities can also destroy or threaten habitats critical to birds during migratory passage, and climate change appears to be altering migrator
Authors
Janet M. Ruth, Wylie C. Barrow, Richard S. Sojda, Deanna K. Dawson, Robert H. Diehl, Albert Manville, Michael T. Green, David J. Krueper, Scott Johnston
Perspective on eastern migration studies: Stopover ecology of migratory landbirds in the Gulf Coast region
Millions of Nearctic-Neotropical landbirds move through the coastal habitats of the Gulf of Mexico each spring and autumn as they migrate across and around the Gulf. Migration routes in the Gulf region are not static and they shift year to year and season to season according to prevailing wind patterns. Using data from field and radar studies, we mapped patterns of migration movement and landfall
Authors
W.C. Barrow, L.A. Johnson Randall
Influences of roads and development on bird communities in protected Chihuahuan Desert landscapes
Our objective was to improve knowledge about effects of broad-scale road and development variables on bird communities in protected desert landscapes. Bird species richness and the relative abundance or probability of occurrence of many species were significantly associated with total length of roads within each of two spatial extents (1- and 2-km radii), distance to the nearest road, distance to
Authors
K.J. Gutzwiller, W.C. Barrow
Bird communities, roads and development: Prospects and constraints of applying empirical models
Our objectives were to explain the prospects and constraints of applying empirical models that relate bird community metrics to broad-scale characteristics of roads and development. We explored the practical value of regression models that were derived for a large protected area in the Chihuahuan Desert. These models related bird species richness, relative abundance, or probability of occurrence t
Authors
K.J. Gutzwiller, W.C. Barrow
Does bird community structure vary with landscape patchiness? A Chihuahuan Desert perspective
During the springs of 1995-1997, we studied birds and landscapes at 70 sites in the Chihuahuan Desert to assess relations between bird community structure and landscape patchiness. Within each of two spatial extents (1-kin and 2-km-radius areas centered on each site), we measured the number of patches of individual land-cover types and the total number of patches of all land-cover types. Mean bird
Authors
K.J. Gutzwiller, W.C. Barrow
Generalized avian dispersal syndrome contributes to Chinese tallow tree (Sapium sebiferum, Euphorbiaceae) invasiveness
Plants possessing generalized dispersal syndromes are likely to be more invasive than those relying on specialist dispersal agents. To address this issue on a local and regional scale, avian seed dispersal of the invasive alien Chinese tallow tree (Sapium sebiferum (L.) Roxb.) was assessed in forests and spoil areas of South Carolina and along forest edges in Louisiana during the 1997-99 fruiting
Authors
I.J. Renne, W.C. Barrow, Lori A. Randall Johnson, W.C. Bridges
Bird-landscape relations in the Chihuahuan Desert: Coping with uncertainties about predictive models
During the springs of 1995–1997, we studied birds and landscapes in the Chihuahuan Desert along part of the Texas–Mexico border. Our objectives were to assess bird–landscape relations and their interannual consistency and to identify ways to cope with associated uncertainties that undermine confidence in using such relations in conservation decision processes. Bird distributions were often signifi
Authors
K.J. Gutzwiller, W.C. Barrow
Disruption and restoration of en route habitat, a case study: The Chenier Plain
Cheniers (relict beach ridges) and other habitats adjacent to ecological barriers may be critical linkages in the migratory pathways of long-distance migratory birds. It is important that these wooded habitats provide enough food and cover at the right time to support these birds’ requirements. To date, little attention has been given to the conservation of coastal woodlands, habitats in which en
Authors
Wylie C. Barrow, Chao-Chieh Chen, Robert B. Hamilton, Keith Ouchley, Terry J. Spengler
Response of bird communities to natural disturbance
No abstract available.
Authors
Michael P. Guilfoyle, Wylie C. Barrow, Paul B. Hamel, James S. Wakely, Sammy L. King, T. J. Antrobus
Bird community composition
Neotropical migrants are birds that breed in North America and winter primarily in Central and South America. Long-term population studies of birds in the Eastern United States indicated declines of some forest-dwelling birds, many of which winter in the Neotropics (Peterjohn and others 1995). These declines were attributed to loss of wintering and breeding habitat due to deforestation and fragmen
Authors
T. J. Antrobus, M.P. Guilfoyle, W.C. Barrow, P.B. Hamel, J.S. Wakeley
Science and Products
Filter Total Items: 56
Nonlinear dynamics in ecosystem response to climatic change: Case studies and policy implications
Many biological, hydrological, and geological processes are interactively linked in ecosystems. These ecological phenomena normally vary within bounded ranges, but rapid, nonlinear changes to markedly different conditions can be triggered by even small differences if threshold values are exceeded. Intrinsic and extrinsic ecological thresholds can lead to effects that cascade among systems, preclud
Authors
Virginia R. Burkett, Douglas A. Wilcox, Robert Stottlemyer, Wylie Barrow, Dan Fagre, Jill Baron, Jeff Price, Jennifer L. Nielsen, Craig D. Allen, David L. Peterson, Greg Ruggerone, Thomas Doyle
Shorebird habitat availability assessment of agricultural fields using a digital aerial video system
Field and wetland conditions in the rice prairies of Louisiana and Texas are highly dynamic habitats. Rice prairies are important habitat for many species of migratory birds, including shorebirds, wading birds, and waterfowl. Ground sampling a variety of fields to assess habitat availability is very labor intensive, and accessibility to private lands makes statistical habitat sampling almost impos
Authors
Clinton W. Jeske, Scott A. Wilson, Paul C. Chadwick, Wylie Barrow
Advancing migratory bird conservation and management by using radar: An interagency collaboration
Migratory birds face many changes to the landscapes they traverse and the habitats they use. Wind turbines and communications towers, which pose hazards to birds and bats in flight, are being erected or proposed across the United States and offshore. Human activities can also destroy or threaten habitats critical to birds during migratory passage, and climate change appears to be altering migrator
Authors
Janet M. Ruth, Wylie C. Barrow, Richard S. Sojda, Deanna K. Dawson, Robert H. Diehl, Albert Manville, Michael T. Green, David J. Krueper, Scott Johnston
Perspective on eastern migration studies: Stopover ecology of migratory landbirds in the Gulf Coast region
Millions of Nearctic-Neotropical landbirds move through the coastal habitats of the Gulf of Mexico each spring and autumn as they migrate across and around the Gulf. Migration routes in the Gulf region are not static and they shift year to year and season to season according to prevailing wind patterns. Using data from field and radar studies, we mapped patterns of migration movement and landfall
Authors
W.C. Barrow, L.A. Johnson Randall
Influences of roads and development on bird communities in protected Chihuahuan Desert landscapes
Our objective was to improve knowledge about effects of broad-scale road and development variables on bird communities in protected desert landscapes. Bird species richness and the relative abundance or probability of occurrence of many species were significantly associated with total length of roads within each of two spatial extents (1- and 2-km radii), distance to the nearest road, distance to
Authors
K.J. Gutzwiller, W.C. Barrow
Bird communities, roads and development: Prospects and constraints of applying empirical models
Our objectives were to explain the prospects and constraints of applying empirical models that relate bird community metrics to broad-scale characteristics of roads and development. We explored the practical value of regression models that were derived for a large protected area in the Chihuahuan Desert. These models related bird species richness, relative abundance, or probability of occurrence t
Authors
K.J. Gutzwiller, W.C. Barrow
Does bird community structure vary with landscape patchiness? A Chihuahuan Desert perspective
During the springs of 1995-1997, we studied birds and landscapes at 70 sites in the Chihuahuan Desert to assess relations between bird community structure and landscape patchiness. Within each of two spatial extents (1-kin and 2-km-radius areas centered on each site), we measured the number of patches of individual land-cover types and the total number of patches of all land-cover types. Mean bird
Authors
K.J. Gutzwiller, W.C. Barrow
Generalized avian dispersal syndrome contributes to Chinese tallow tree (Sapium sebiferum, Euphorbiaceae) invasiveness
Plants possessing generalized dispersal syndromes are likely to be more invasive than those relying on specialist dispersal agents. To address this issue on a local and regional scale, avian seed dispersal of the invasive alien Chinese tallow tree (Sapium sebiferum (L.) Roxb.) was assessed in forests and spoil areas of South Carolina and along forest edges in Louisiana during the 1997-99 fruiting
Authors
I.J. Renne, W.C. Barrow, Lori A. Randall Johnson, W.C. Bridges
Bird-landscape relations in the Chihuahuan Desert: Coping with uncertainties about predictive models
During the springs of 1995–1997, we studied birds and landscapes in the Chihuahuan Desert along part of the Texas–Mexico border. Our objectives were to assess bird–landscape relations and their interannual consistency and to identify ways to cope with associated uncertainties that undermine confidence in using such relations in conservation decision processes. Bird distributions were often signifi
Authors
K.J. Gutzwiller, W.C. Barrow
Disruption and restoration of en route habitat, a case study: The Chenier Plain
Cheniers (relict beach ridges) and other habitats adjacent to ecological barriers may be critical linkages in the migratory pathways of long-distance migratory birds. It is important that these wooded habitats provide enough food and cover at the right time to support these birds’ requirements. To date, little attention has been given to the conservation of coastal woodlands, habitats in which en
Authors
Wylie C. Barrow, Chao-Chieh Chen, Robert B. Hamilton, Keith Ouchley, Terry J. Spengler
Response of bird communities to natural disturbance
No abstract available.
Authors
Michael P. Guilfoyle, Wylie C. Barrow, Paul B. Hamel, James S. Wakely, Sammy L. King, T. J. Antrobus
Bird community composition
Neotropical migrants are birds that breed in North America and winter primarily in Central and South America. Long-term population studies of birds in the Eastern United States indicated declines of some forest-dwelling birds, many of which winter in the Neotropics (Peterjohn and others 1995). These declines were attributed to loss of wintering and breeding habitat due to deforestation and fragmen
Authors
T. J. Antrobus, M.P. Guilfoyle, W.C. Barrow, P.B. Hamel, J.S. Wakeley