Douglas Johnson (Former Employee)
Science and Products
Filter Total Items: 318
The effects of management practices on grassland birds—Swainson’s Hawk (Buteo swainsoni) The effects of management practices on grassland birds—Swainson’s Hawk (Buteo swainsoni)
The key to Swainson's Hawk (Buteo swainsoni) management is providing open grasslands that contain patches of trees for nesting and perching, sometimes near cultivated areas.
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Meghan F. Dinkins, Christopher M. Goldade, Travis L. Wooten, Betty R. Euliss
The effects of management practices on grassland birds—Northern Harrier (Circus hudsonius) The effects of management practices on grassland birds—Northern Harrier (Circus hudsonius)
The key to Northern Harrier (Circus hudsonius) management is providing tall, dense vegetation in extensive mesic or xeric grasslands or in wetlands. Northern Harriers have been reported to use habitats with 15–106 centimeter (cm) average vegetation height, 28–75 cm visual obstruction reading, 24–53 percent grass cover, 18–25 percent forb cover, less than or equal to 2 percent shrub cover...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Jason P. Thiele, Betty R. Euliss
The effects of management practices on grassland birds—Marbled Godwit (Limosa fedoa) The effects of management practices on grassland birds—Marbled Godwit (Limosa fedoa)
Keys to Marbled Godwit (Limosa fedoa) management include providing large expanses of short, sparsely to moderately vegetated landscapes that include native grasslands and wetland complexes. Optimal wetland complexes should contain a diversity of wetland classes and sizes, such as ephemeral, temporary, seasonal, semipermanent, permanent, and alkali wetlands, as well as intermittent...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss
The effects of management practices on grassland birds—American Bittern (Botaurus lentiginosus) The effects of management practices on grassland birds—American Bittern (Botaurus lentiginosus)
Keys to American Bittern (Botaurus lentiginosus) management include protecting wetlands and adjacent uplands and maintaining idle upland habitat. American Bitterns have been reported to use habitats with 30–203 centimeters (cm) average vegetation height, 44–99 cm visual obstruction reading, and less than 91 cm water depth.
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Amy L. Zimmerman, Travis L. Wooten, Betty R. Euliss
The effects of management practices on grassland birds—Wilson’s Phalarope (Phalaropus tricolor) The effects of management practices on grassland birds—Wilson’s Phalarope (Phalaropus tricolor)
The key to Wilson’s Phalarope (Phalaropus tricolor) management is providing wetland complexes containing suitable wetland characteristics (that is, open water, emergent vegetation, and open shoreline) and upland habitat (native grassland or tame hayland) throughout the breeding season. Wilson’s Phalaropes have been reported to use habitats with 15–32 centimeters (cm) average vegetation...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Christopher M. Goldade, Amy L. Zimmerman, Betty R. Euliss
The effects of management practices on grassland birds—Willet (Tringa semipalmata inornata) The effects of management practices on grassland birds—Willet (Tringa semipalmata inornata)
Keys to Willet (Tringa semipalmata inornata) management include providing large expanses of native grasslands and wetland complexes. Wetland complexes should contain a diversity of wetland sizes and classes, such as ephemeral, temporary, seasonal, semipermanent, and permanent wetlands, as well as intermittent streams. Willets use wetlands of various salinities. Willets require short...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Jason P. Thiele, Betty R. Euliss
Science and Products
Filter Total Items: 318
The effects of management practices on grassland birds—Swainson’s Hawk (Buteo swainsoni) The effects of management practices on grassland birds—Swainson’s Hawk (Buteo swainsoni)
The key to Swainson's Hawk (Buteo swainsoni) management is providing open grasslands that contain patches of trees for nesting and perching, sometimes near cultivated areas.
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Meghan F. Dinkins, Christopher M. Goldade, Travis L. Wooten, Betty R. Euliss
The effects of management practices on grassland birds—Northern Harrier (Circus hudsonius) The effects of management practices on grassland birds—Northern Harrier (Circus hudsonius)
The key to Northern Harrier (Circus hudsonius) management is providing tall, dense vegetation in extensive mesic or xeric grasslands or in wetlands. Northern Harriers have been reported to use habitats with 15–106 centimeter (cm) average vegetation height, 28–75 cm visual obstruction reading, 24–53 percent grass cover, 18–25 percent forb cover, less than or equal to 2 percent shrub cover...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Jason P. Thiele, Betty R. Euliss
The effects of management practices on grassland birds—Marbled Godwit (Limosa fedoa) The effects of management practices on grassland birds—Marbled Godwit (Limosa fedoa)
Keys to Marbled Godwit (Limosa fedoa) management include providing large expanses of short, sparsely to moderately vegetated landscapes that include native grasslands and wetland complexes. Optimal wetland complexes should contain a diversity of wetland classes and sizes, such as ephemeral, temporary, seasonal, semipermanent, permanent, and alkali wetlands, as well as intermittent...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss
The effects of management practices on grassland birds—American Bittern (Botaurus lentiginosus) The effects of management practices on grassland birds—American Bittern (Botaurus lentiginosus)
Keys to American Bittern (Botaurus lentiginosus) management include protecting wetlands and adjacent uplands and maintaining idle upland habitat. American Bitterns have been reported to use habitats with 30–203 centimeters (cm) average vegetation height, 44–99 cm visual obstruction reading, and less than 91 cm water depth.
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Amy L. Zimmerman, Travis L. Wooten, Betty R. Euliss
The effects of management practices on grassland birds—Wilson’s Phalarope (Phalaropus tricolor) The effects of management practices on grassland birds—Wilson’s Phalarope (Phalaropus tricolor)
The key to Wilson’s Phalarope (Phalaropus tricolor) management is providing wetland complexes containing suitable wetland characteristics (that is, open water, emergent vegetation, and open shoreline) and upland habitat (native grassland or tame hayland) throughout the breeding season. Wilson’s Phalaropes have been reported to use habitats with 15–32 centimeters (cm) average vegetation...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Christopher M. Goldade, Amy L. Zimmerman, Betty R. Euliss
The effects of management practices on grassland birds—Willet (Tringa semipalmata inornata) The effects of management practices on grassland birds—Willet (Tringa semipalmata inornata)
Keys to Willet (Tringa semipalmata inornata) management include providing large expanses of native grasslands and wetland complexes. Wetland complexes should contain a diversity of wetland sizes and classes, such as ephemeral, temporary, seasonal, semipermanent, and permanent wetlands, as well as intermittent streams. Willets use wetlands of various salinities. Willets require short...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Jason P. Thiele, Betty R. Euliss