Daniel Twedt, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 93
A spatially explicit decision support model for restoration of forest bird habitat A spatially explicit decision support model for restoration of forest bird habitat
The historical area of bottomland hardwood forest in the Mississippi Alluvial Valley has been reduced by >75%. Agricultural production was the primary motivator for deforestation; hence, clearing deliberately targeted higher and drier sites. Remaining forests are highly fragmented and hydrologically altered, with larger forest fragments subject to greater inundation, which has negatively...
Authors
D.J. Twedt, W.B. Uihlein, A.B. Elliott
Restoration of understory trees on bottomland hardwood sites (Mississippi) Restoration of understory trees on bottomland hardwood sites (Mississippi)
No abstract available.
Authors
J. A. Allen, J. Wessman, D.J. Twedt
Bird use of reforestation sites: Influence of location and vertical structure Bird use of reforestation sites: Influence of location and vertical structure
In the Lower Mississippi Valley, more than 300,000 acres of agricultural land have been reforested in the last 10 years. Planning decisions on how and where to restore forest are complex and usually reflect landowner objectives. However, initial planning decisions may have a large influence on the value of restored stands for birds and other wildlife. Reforestation of small, isolated...
Authors
Daniel J. Twedt, Robert Cooper
Waiting for trees to grow: nest survival, brood parasitism, and the impact of reforestation efforts Waiting for trees to grow: nest survival, brood parasitism, and the impact of reforestation efforts
Of the forested wetlands that once covered the Mississippi Alluvial Valley, only -25% remain due to large-scale conversion to agriculture. Reforestation efforts are currently underway, but tracts planted with slow-growing oaks maintain the structure of a grassland for 5 yr or longer, and will require at least 40 yr to resemble a mature forest. Nonetheless, it is hoped that reforestation...
Authors
K.R. Hazler, D.J. Twedt, R.J. Cooper
Winter status of White-eyed Vireos in northeastern Louisiana Winter status of White-eyed Vireos in northeastern Louisiana
In December 2004, February 2005, and June 2005, we recaptured a White-eyed Vireo (Vireo griseus) that was banded on 19 May 2004 at the same location on the Tensas River National Wildlife Refuge, Madison Parish, LA. This is the first documented permanent resident White-eyed Vireo outside of resident populations known from Florida and southern Texas. This individual appears to be resident...
Authors
S.G. Somershoe, D.J. Twedt
An objective method to determine an area's relative significance for avian conservation An objective method to determine an area's relative significance for avian conservation
Land managers are often concerned with providing habitat affords the 'best habitat for songbirds.' However, unless management simply is directed at rare species it may not be clear which habitats or management options are best. A standard, quantifiable measure to compare the significance of different tracts of land or competing management techniques for avian conservation would benefit...
Authors
D.J. Twedt
Science and Products
Filter Total Items: 93
A spatially explicit decision support model for restoration of forest bird habitat A spatially explicit decision support model for restoration of forest bird habitat
The historical area of bottomland hardwood forest in the Mississippi Alluvial Valley has been reduced by >75%. Agricultural production was the primary motivator for deforestation; hence, clearing deliberately targeted higher and drier sites. Remaining forests are highly fragmented and hydrologically altered, with larger forest fragments subject to greater inundation, which has negatively...
Authors
D.J. Twedt, W.B. Uihlein, A.B. Elliott
Restoration of understory trees on bottomland hardwood sites (Mississippi) Restoration of understory trees on bottomland hardwood sites (Mississippi)
No abstract available.
Authors
J. A. Allen, J. Wessman, D.J. Twedt
Bird use of reforestation sites: Influence of location and vertical structure Bird use of reforestation sites: Influence of location and vertical structure
In the Lower Mississippi Valley, more than 300,000 acres of agricultural land have been reforested in the last 10 years. Planning decisions on how and where to restore forest are complex and usually reflect landowner objectives. However, initial planning decisions may have a large influence on the value of restored stands for birds and other wildlife. Reforestation of small, isolated...
Authors
Daniel J. Twedt, Robert Cooper
Waiting for trees to grow: nest survival, brood parasitism, and the impact of reforestation efforts Waiting for trees to grow: nest survival, brood parasitism, and the impact of reforestation efforts
Of the forested wetlands that once covered the Mississippi Alluvial Valley, only -25% remain due to large-scale conversion to agriculture. Reforestation efforts are currently underway, but tracts planted with slow-growing oaks maintain the structure of a grassland for 5 yr or longer, and will require at least 40 yr to resemble a mature forest. Nonetheless, it is hoped that reforestation...
Authors
K.R. Hazler, D.J. Twedt, R.J. Cooper
Winter status of White-eyed Vireos in northeastern Louisiana Winter status of White-eyed Vireos in northeastern Louisiana
In December 2004, February 2005, and June 2005, we recaptured a White-eyed Vireo (Vireo griseus) that was banded on 19 May 2004 at the same location on the Tensas River National Wildlife Refuge, Madison Parish, LA. This is the first documented permanent resident White-eyed Vireo outside of resident populations known from Florida and southern Texas. This individual appears to be resident...
Authors
S.G. Somershoe, D.J. Twedt
An objective method to determine an area's relative significance for avian conservation An objective method to determine an area's relative significance for avian conservation
Land managers are often concerned with providing habitat affords the 'best habitat for songbirds.' However, unless management simply is directed at rare species it may not be clear which habitats or management options are best. A standard, quantifiable measure to compare the significance of different tracts of land or competing management techniques for avian conservation would benefit...
Authors
D.J. Twedt