Douglas Johnson (Former Employee)
Science and Products
Filter Total Items: 318
Effects of management practices on wetland birds: American Avocet Effects of management practices on wetland birds: American Avocet
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Jill A. Dechant, Amy L. Zimmerman, Douglas H. Johnson, Christopher M. Goldade, Brent E. Jamison, Betty R. Euliss
Effects of management practices on wetland birds: Virginia rail Effects of management practices on wetland birds: Virginia rail
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Amy L. Zimmerman, Jill A. Dechant, Brent E. Jamison, Douglas H. Johnson, Christopher M. Goldade, James O. Church, Betty R. Euliss
Effects of management practices on wetland birds: Yellow Rail Effects of management practices on wetland birds: Yellow Rail
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Christopher M. Goldade, Jill A. Dechant, Douglas H. Johnson, Amy L. Zimmerman, Brent E. Jamison, James O. Church, Betty R. Euliss
Toward better atlases: improving presence-absence information Toward better atlases: improving presence-absence information
No abstract available.
Authors
Douglas H. Johnson, G.A. Sargeant
Effects of management practices on wetland birds: Black tern Effects of management practices on wetland birds: Black tern
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Amy L. Zimmerman, Jill A. Dechant, Douglas A. Johnson, Christopher M. Goldade, Brent E. Jamison, Betty R. Euliss
Assemblages of breeding birds as indicators of grassland condition Assemblages of breeding birds as indicators of grassland condition
We developed a measure of biological integrity for grasslands (GI) based on the most influential habitat types in the Prairie Pothole Region of North Dakota. GI is based on proportions of habitat types and the relationships of these habitat types to breeding birds. Habitat types were identified by digital aerial photography, verified on the ground, and quantified using GIS. We then...
Authors
S.F. Browder, Douglas H. Johnson, I.J. Ball
Science and Products
Filter Total Items: 318
Effects of management practices on wetland birds: American Avocet Effects of management practices on wetland birds: American Avocet
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Jill A. Dechant, Amy L. Zimmerman, Douglas H. Johnson, Christopher M. Goldade, Brent E. Jamison, Betty R. Euliss
Effects of management practices on wetland birds: Virginia rail Effects of management practices on wetland birds: Virginia rail
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Amy L. Zimmerman, Jill A. Dechant, Brent E. Jamison, Douglas H. Johnson, Christopher M. Goldade, James O. Church, Betty R. Euliss
Effects of management practices on wetland birds: Yellow Rail Effects of management practices on wetland birds: Yellow Rail
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Christopher M. Goldade, Jill A. Dechant, Douglas H. Johnson, Amy L. Zimmerman, Brent E. Jamison, James O. Church, Betty R. Euliss
Toward better atlases: improving presence-absence information Toward better atlases: improving presence-absence information
No abstract available.
Authors
Douglas H. Johnson, G.A. Sargeant
Effects of management practices on wetland birds: Black tern Effects of management practices on wetland birds: Black tern
Information on the habitat requirements and effects of habitat management on wetland birds were summarized from information in more than 500 published and unpublished papers. A range map is provided to indicate the relative densities of the species in North America, based on Breeding Bird Survey (BBS) data. Although the BBS may not capture the presence of elusive waterbird species, the...
Authors
Amy L. Zimmerman, Jill A. Dechant, Douglas A. Johnson, Christopher M. Goldade, Brent E. Jamison, Betty R. Euliss
Assemblages of breeding birds as indicators of grassland condition Assemblages of breeding birds as indicators of grassland condition
We developed a measure of biological integrity for grasslands (GI) based on the most influential habitat types in the Prairie Pothole Region of North Dakota. GI is based on proportions of habitat types and the relationships of these habitat types to breeding birds. Habitat types were identified by digital aerial photography, verified on the ground, and quantified using GIS. We then...
Authors
S.F. Browder, Douglas H. Johnson, I.J. Ball