Lori Randall
Lori Randall is a biologist at the Wetland and Aquatic Research Center in Lafayette, LA.
Randall's current research focuses on studies of bird-habitat relations that include the use of weather radar to determine landscape-scale habitat needs of migrating and wintering birds. Previous research focused on the effects of nutria herbivory on primary production and plant stand structure in Gulf Coast wetlands.
Science and Products
Filter Total Items: 25
Modeling mechanisms of vegetation change due to fire in a semi-arid ecosystem
Vegetation growth and community composition in semi-arid environments is determined by water availability and carbon assimilation mechanisms specific to different plant types. Disturbance also impacts vegetation productivity and composition dependent on area affected, intensity, and frequency factors. In this study, a new spatially explicit ecosystem model is presented for the purpose of simulatin
Authors
J.D. White, K.J. Gutzwiller, W.C. Barrow, L.J. Randall, P. Swint
Cheniere forest as stopover habitat for migrant landbirds: Immediate effects of Hurricane Rita
It is not known whether en route fall migratory birds (August-October) are likely to suffer more from direct or secondary effects of hurricanes. On September 24, 2005, Hurricane Rita wreaked havoc on Louisiana's coast by toppling trees over vast areas and by stripping away microhabitats that harbor the invertebrates and produce the fruits upon which migrant landbirds depend (e.g., canopy foliage,
Authors
Wylie Barrow, Paul Chadwick, Brady R. Couvillion, Thomas Doyle, Stephen Faulkner, Clint Jeske, Tommy Michot, Lori Randall, Chris Wells, Scott Wilson
Broad-scale response of landbird migration to the immediate effects of Hurricane Katrina
It was the midst of songbird migration season when Hurricane Katrina hit the Louisiana coast in 2005. Typically these birds fatten up in Gulf Coast river bottomland forest for the long flight to Central and South America. After Katrina stripped plants of leaves, fruits, and insects in the fertile bottomlands of the Pearl River, weather radar indicated that migrant birds increased their use of adja
Authors
Wylie Barrow, J. Buler, Brady R. Couvillion, Robb Diehl, Stephen Faulkner, F. Moore, Lori Randall
Impacts of Hurricane Katrina on floodplain forests of the Pearl River
Floodplain forests are an important habitat for Neotropical migratory birds. Hurricane Katrina passed through the Pearl River flood plain shortly after making landfall. Field measurements on historical plots and remotely sensed data were used to assess the impact of Hurricane Katrina on the structure of floodplain forests of the Pearl River.
Authors
Stephen Faulkner, Wylie Barrow, Brady R. Couvillion, William Conner, Lori Randall, Michael Baldwin
Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative
Executive Summary
Understanding the factors affecting migratory bird and bat populations during all three phases of their life cycle—breeding, nonbreeding, and migration—is critical to species conservation planning. This includes the need for information about these species’ responses to natural challenges, as well as information about the effects of human activities and structures. Habitats and o
Authors
Janet M. Ruth, Albert Manville, Ron Larkin, Wylie C. Barrow, Lori Johnson-Randall, Deanna K. Dawson, Robert H. Diehl, Yufang Wang, Richard S. Sojda, Rafal Angryk, Robert W. Klaver, Reggie Mead, John Paxton, Patricia J. Heglund, Eileen Kirsch, Manuel J. Suarez, Larry Robinson, Sidney A. Gauthreaux, Carroll G. Belser, Steven J. Franke, Bruno Bruderer, Jeffrey J. Buler, Frank R. Moore, David S. Mizrahi, Robert Fogg, T. Adam Kelly, Paul M. Cryan, Tim Crum, Terry J. Schuur, Dave Krueper, Robb Diehl, Tom Will
Use of NEXRAD to study shorebird migration in the Prairie Pothole region: A feasibility study
An essential component of shorebird conservation is identifying, protecting, and managing high-priority stopover sites and migration habitats crucial to the long-term persistence of migrating shorebirds. Because of the tremendous variability in migrant shorebird occurrence patterns in the Prairie Pothole Region of the U.S. (Skagen 1997), it is labor- and cost-intensive to locate the majority of si
Authors
Cynthia P. Melcher, Susan K. Skagen, Lori Randall
Coastal forests of the Gulf of Mexico: A description and some thoughts on their conservation
Millions of Nearctic-Neotropical landbirds move through the coastal forests 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—they shift year to year and season to season according to prevailing wind patterns. Given the dynamic nature of migration routes, coastal forests around the Gulf of Mexico potentially
Authors
Wylie C. Barrow, Lori Johnson-Randall, M.S. Woodrey, J. Cox, E. Ruelas I., C. M. Riley, R.B. Hamilton, C. Eberly
Effects of managed impoundments and herbivory on wetland plant production and stand structure
Managed impoundments, a form of structural marsh management, have been used to enhance plant production in the rapidly-eroding marshes of coastal Louisiana, USA, yet few studies have quantified their effects by measuring plant production before and after impoundment construction. We tested the effects of structural marsh management on the annual aboveground production and plant stand structure (st
Authors
Lori A. Randall Johnson, A. Lee Foote
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
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
Modeling the effects of nutria (Myocastor coypus) on wetland loss
We created a model to study the process in which nutria (Myocastor coypus) feeding activities lead to erosion and loss of marsh area. This model ties together data on nutria population dynamics and feeding behavior from the literature with data from field studies on the phenology of Scirpus americanus and Spartina patens conducted in the Barataria Basin, Louisiana, USA in 1992. The complete model
Authors
J. Carter, A.L. Foote, L. A. Johnson-Randall
Science and Products
Filter Total Items: 25
Modeling mechanisms of vegetation change due to fire in a semi-arid ecosystem
Vegetation growth and community composition in semi-arid environments is determined by water availability and carbon assimilation mechanisms specific to different plant types. Disturbance also impacts vegetation productivity and composition dependent on area affected, intensity, and frequency factors. In this study, a new spatially explicit ecosystem model is presented for the purpose of simulatin
Authors
J.D. White, K.J. Gutzwiller, W.C. Barrow, L.J. Randall, P. Swint
Cheniere forest as stopover habitat for migrant landbirds: Immediate effects of Hurricane Rita
It is not known whether en route fall migratory birds (August-October) are likely to suffer more from direct or secondary effects of hurricanes. On September 24, 2005, Hurricane Rita wreaked havoc on Louisiana's coast by toppling trees over vast areas and by stripping away microhabitats that harbor the invertebrates and produce the fruits upon which migrant landbirds depend (e.g., canopy foliage,
Authors
Wylie Barrow, Paul Chadwick, Brady R. Couvillion, Thomas Doyle, Stephen Faulkner, Clint Jeske, Tommy Michot, Lori Randall, Chris Wells, Scott Wilson
Broad-scale response of landbird migration to the immediate effects of Hurricane Katrina
It was the midst of songbird migration season when Hurricane Katrina hit the Louisiana coast in 2005. Typically these birds fatten up in Gulf Coast river bottomland forest for the long flight to Central and South America. After Katrina stripped plants of leaves, fruits, and insects in the fertile bottomlands of the Pearl River, weather radar indicated that migrant birds increased their use of adja
Authors
Wylie Barrow, J. Buler, Brady R. Couvillion, Robb Diehl, Stephen Faulkner, F. Moore, Lori Randall
Impacts of Hurricane Katrina on floodplain forests of the Pearl River
Floodplain forests are an important habitat for Neotropical migratory birds. Hurricane Katrina passed through the Pearl River flood plain shortly after making landfall. Field measurements on historical plots and remotely sensed data were used to assess the impact of Hurricane Katrina on the structure of floodplain forests of the Pearl River.
Authors
Stephen Faulkner, Wylie Barrow, Brady R. Couvillion, William Conner, Lori Randall, Michael Baldwin
Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative
Executive Summary
Understanding the factors affecting migratory bird and bat populations during all three phases of their life cycle—breeding, nonbreeding, and migration—is critical to species conservation planning. This includes the need for information about these species’ responses to natural challenges, as well as information about the effects of human activities and structures. Habitats and o
Authors
Janet M. Ruth, Albert Manville, Ron Larkin, Wylie C. Barrow, Lori Johnson-Randall, Deanna K. Dawson, Robert H. Diehl, Yufang Wang, Richard S. Sojda, Rafal Angryk, Robert W. Klaver, Reggie Mead, John Paxton, Patricia J. Heglund, Eileen Kirsch, Manuel J. Suarez, Larry Robinson, Sidney A. Gauthreaux, Carroll G. Belser, Steven J. Franke, Bruno Bruderer, Jeffrey J. Buler, Frank R. Moore, David S. Mizrahi, Robert Fogg, T. Adam Kelly, Paul M. Cryan, Tim Crum, Terry J. Schuur, Dave Krueper, Robb Diehl, Tom Will
Use of NEXRAD to study shorebird migration in the Prairie Pothole region: A feasibility study
An essential component of shorebird conservation is identifying, protecting, and managing high-priority stopover sites and migration habitats crucial to the long-term persistence of migrating shorebirds. Because of the tremendous variability in migrant shorebird occurrence patterns in the Prairie Pothole Region of the U.S. (Skagen 1997), it is labor- and cost-intensive to locate the majority of si
Authors
Cynthia P. Melcher, Susan K. Skagen, Lori Randall
Coastal forests of the Gulf of Mexico: A description and some thoughts on their conservation
Millions of Nearctic-Neotropical landbirds move through the coastal forests 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—they shift year to year and season to season according to prevailing wind patterns. Given the dynamic nature of migration routes, coastal forests around the Gulf of Mexico potentially
Authors
Wylie C. Barrow, Lori Johnson-Randall, M.S. Woodrey, J. Cox, E. Ruelas I., C. M. Riley, R.B. Hamilton, C. Eberly
Effects of managed impoundments and herbivory on wetland plant production and stand structure
Managed impoundments, a form of structural marsh management, have been used to enhance plant production in the rapidly-eroding marshes of coastal Louisiana, USA, yet few studies have quantified their effects by measuring plant production before and after impoundment construction. We tested the effects of structural marsh management on the annual aboveground production and plant stand structure (st
Authors
Lori A. Randall Johnson, A. Lee Foote
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
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
Modeling the effects of nutria (Myocastor coypus) on wetland loss
We created a model to study the process in which nutria (Myocastor coypus) feeding activities lead to erosion and loss of marsh area. This model ties together data on nutria population dynamics and feeding behavior from the literature with data from field studies on the phenology of Scirpus americanus and Spartina patens conducted in the Barataria Basin, Louisiana, USA in 1992. The complete model
Authors
J. Carter, A.L. Foote, L. A. Johnson-Randall