Daniel Twedt, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 93
Breeding bird census: Planted cottonwood forest -outside levee Breeding bird census: Planted cottonwood forest -outside levee
No abstract available.
Authors
Daniel J. Twedt
A land manager's guide to point counts of birds in the Southeast A land manager's guide to point counts of birds in the Southeast
Current widespread concern for the status of neotropical migratory birds has sparked interest in techniques for inventorying and monitoring populations of these and other birds in southeastern forest habitats. The present guide gives detailed instructions for conducting point counts of birds. It further presents a detailed methodology for the design and conduct of inventorial and...
Authors
P.B. Hamel, W.P. Smith, D.J. Twedt, J.R. Woehr, E. Morris, R.B. Hamilton, R.J. Cooper
Seed deterioration in flooded agricultural fields during winter Seed deterioration in flooded agricultural fields during winter
We determined rate of seed deterioration for 3 crops (corn, rice, and soybean) and 8 weeds commonly found in agricultural fields and moist-soil management units in the Mississippi Alluvial Valley (MAV). The weeds were broadleaf signalgrass (Brachiaria platyphylla), junglerice barnyardgrass (Echinochloa colonum), morningglory (Ipomoea sp.), panic grass (Panicum sp.), bull paspalum...
Authors
C.O. Nelms, D.J. Twedt
Breeding bird census: Coppiced cottonwood forest I & II Breeding bird census: Coppiced cottonwood forest I & II
No abstract available.
Authors
Daniel J. Twedt
Breeding bird census: Planted cottonwood forest -inside levee Breeding bird census: Planted cottonwood forest -inside levee
No abstract available.
Authors
Daniel J. Twedt
Age-class separation of blue-winged ducks Age-class separation of blue-winged ducks
Accurate determination of age is of fundamental importance to population and life history studies of waterfowl and their management. Therefore, we developed quantitative methods that separate adult and immature blue-winged teal (Anas discors), cinnamon teal (A. cyanoptera), and northern shovelers (A. clypeata) during spring and summer. To assess suitability of discriminant models using 9...
Authors
William L. Hohman, Joseph L. Moore, Daniel J. Twedt, John G. Mensik, E. Logerwell
Science and Products
Filter Total Items: 93
Breeding bird census: Planted cottonwood forest -outside levee Breeding bird census: Planted cottonwood forest -outside levee
No abstract available.
Authors
Daniel J. Twedt
A land manager's guide to point counts of birds in the Southeast A land manager's guide to point counts of birds in the Southeast
Current widespread concern for the status of neotropical migratory birds has sparked interest in techniques for inventorying and monitoring populations of these and other birds in southeastern forest habitats. The present guide gives detailed instructions for conducting point counts of birds. It further presents a detailed methodology for the design and conduct of inventorial and...
Authors
P.B. Hamel, W.P. Smith, D.J. Twedt, J.R. Woehr, E. Morris, R.B. Hamilton, R.J. Cooper
Seed deterioration in flooded agricultural fields during winter Seed deterioration in flooded agricultural fields during winter
We determined rate of seed deterioration for 3 crops (corn, rice, and soybean) and 8 weeds commonly found in agricultural fields and moist-soil management units in the Mississippi Alluvial Valley (MAV). The weeds were broadleaf signalgrass (Brachiaria platyphylla), junglerice barnyardgrass (Echinochloa colonum), morningglory (Ipomoea sp.), panic grass (Panicum sp.), bull paspalum...
Authors
C.O. Nelms, D.J. Twedt
Breeding bird census: Coppiced cottonwood forest I & II Breeding bird census: Coppiced cottonwood forest I & II
No abstract available.
Authors
Daniel J. Twedt
Breeding bird census: Planted cottonwood forest -inside levee Breeding bird census: Planted cottonwood forest -inside levee
No abstract available.
Authors
Daniel J. Twedt
Age-class separation of blue-winged ducks Age-class separation of blue-winged ducks
Accurate determination of age is of fundamental importance to population and life history studies of waterfowl and their management. Therefore, we developed quantitative methods that separate adult and immature blue-winged teal (Anas discors), cinnamon teal (A. cyanoptera), and northern shovelers (A. clypeata) during spring and summer. To assess suitability of discriminant models using 9...
Authors
William L. Hohman, Joseph L. Moore, Daniel J. Twedt, John G. Mensik, E. Logerwell