Daniel Twedt, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 93
Landscape and vegetation effects on avian reproduction on bottomland forest restorations Landscape and vegetation effects on avian reproduction on bottomland forest restorations
Forest restoration has been undertaken on >200,000 ha of agricultural land in the Mississippi Alluvial Valley, USA, during the past few decades. Decisions on where and how to restore bottomland forests are complex and dependent upon landowner objectives, but for conservation of silvicolous (forest-dwelling) birds, ecologists have espoused restoration through planting a diverse mix of...
Authors
Daniel J. Twedt, Scott G. Somershoe, Kirsten R. Hazler, Robert J. Cooper
Change in avian abundance predicted from regional forest inventory data Change in avian abundance predicted from regional forest inventory data
An inability to predict population response to future habitat projections is a shortcoming in bird conservation planning. We sought to predict avian response to projections of future forest conditions that were developed from nationwide forest surveys within the Forest Inventory and Analysis (FIA) program. To accomplish this, we evaluated the historical relationship between silvicolous...
Authors
Daniel J. Twedt, John M. Tirpak, D. Todd Jones-Farrand, Frank R. Thompson, William B. Uihlein, Jane A. Fitzgerald
Effects of wildlife forestry on abundance of breeding birds in bottomland hardwood forests of Louisiana Effects of wildlife forestry on abundance of breeding birds in bottomland hardwood forests of Louisiana
Effects of silvicultural activities on birds are of increasing interest because of documented national declines in breeding bird populations for some species and the potential that these declines are in part due to changes in forest habitat. Silviculturally induced disturbances have been advocated as a means to achieve suitable forest conditions for priority wildlife species in...
Authors
Jennifer L. Norris, Michael J. Chamberlain, Daniel J. Twedt
Winter bird population studies and project prairie birds for surveying grassland birds Winter bird population studies and project prairie birds for surveying grassland birds
We compared 2 survey methods for assessing winter bird communities in temperate grasslands: Winter Bird Population Study surveys are area-searches that have long been used in a variety of habitats whereas Project Prairie Bird surveys employ active-flushing techniques on strip-transects and are intended for use in grasslands. We used both methods to survey birds on 14 herbaceous...
Authors
D.J. Twedt, P.B. Hamel, M.S. Woodrey
Bird response to silviculture induced change in forest structure within bottomland hardwood forests Bird response to silviculture induced change in forest structure within bottomland hardwood forests
Silvicultural treatments prescribed to encourage development of desired stand structure (i.e., wildlife-forestry) should result in increased abundance of many bird species of management concern, especially species using dense understory habitat. Desired forest conditions within bottomland vary among sites, but average 60-70% overstory canopy that is heterogeneously distributed with >5...
Authors
D.J. Twedt, S.G. Somershoe
Science and Products
Filter Total Items: 93
Landscape and vegetation effects on avian reproduction on bottomland forest restorations Landscape and vegetation effects on avian reproduction on bottomland forest restorations
Forest restoration has been undertaken on >200,000 ha of agricultural land in the Mississippi Alluvial Valley, USA, during the past few decades. Decisions on where and how to restore bottomland forests are complex and dependent upon landowner objectives, but for conservation of silvicolous (forest-dwelling) birds, ecologists have espoused restoration through planting a diverse mix of...
Authors
Daniel J. Twedt, Scott G. Somershoe, Kirsten R. Hazler, Robert J. Cooper
Change in avian abundance predicted from regional forest inventory data Change in avian abundance predicted from regional forest inventory data
An inability to predict population response to future habitat projections is a shortcoming in bird conservation planning. We sought to predict avian response to projections of future forest conditions that were developed from nationwide forest surveys within the Forest Inventory and Analysis (FIA) program. To accomplish this, we evaluated the historical relationship between silvicolous...
Authors
Daniel J. Twedt, John M. Tirpak, D. Todd Jones-Farrand, Frank R. Thompson, William B. Uihlein, Jane A. Fitzgerald
Effects of wildlife forestry on abundance of breeding birds in bottomland hardwood forests of Louisiana Effects of wildlife forestry on abundance of breeding birds in bottomland hardwood forests of Louisiana
Effects of silvicultural activities on birds are of increasing interest because of documented national declines in breeding bird populations for some species and the potential that these declines are in part due to changes in forest habitat. Silviculturally induced disturbances have been advocated as a means to achieve suitable forest conditions for priority wildlife species in...
Authors
Jennifer L. Norris, Michael J. Chamberlain, Daniel J. Twedt
Winter bird population studies and project prairie birds for surveying grassland birds Winter bird population studies and project prairie birds for surveying grassland birds
We compared 2 survey methods for assessing winter bird communities in temperate grasslands: Winter Bird Population Study surveys are area-searches that have long been used in a variety of habitats whereas Project Prairie Bird surveys employ active-flushing techniques on strip-transects and are intended for use in grasslands. We used both methods to survey birds on 14 herbaceous...
Authors
D.J. Twedt, P.B. Hamel, M.S. Woodrey
Bird response to silviculture induced change in forest structure within bottomland hardwood forests Bird response to silviculture induced change in forest structure within bottomland hardwood forests
Silvicultural treatments prescribed to encourage development of desired stand structure (i.e., wildlife-forestry) should result in increased abundance of many bird species of management concern, especially species using dense understory habitat. Desired forest conditions within bottomland vary among sites, but average 60-70% overstory canopy that is heterogeneously distributed with >5...
Authors
D.J. Twedt, S.G. Somershoe