Douglas Johnson (Former Employee)
Science and Products
Conversion of CRP Grasslands to Cropland, Grazing Lands, or Hayland: Effects on Breeding Bird Abundances in the Northern Great Plains, 1996-2017, data release Conversion of CRP Grasslands to Cropland, Grazing Lands, or Hayland: Effects on Breeding Bird Abundances in the Northern Great Plains, 1996-2017, data release
The data set consists of bird abundance data collected in undisturbed grassland fields enrolled in the Conservation Reserve Program (CRP) and former CRP fields that were converted to cropland, grazing land, or hayland in nine counties in four states (Montana, North Dakota, South Dakota, and Minnesota) in the northern Great Plains. The study was initiated in 1990, but data were only...
The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota dataset The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota dataset
The data set consists of data collected in 1995, 1996, and 1997 in wetlands in the Prairie Pothole Region of North Dakota and South Dakota. The data were summarized and used in the analysis for a U.S. Geological Survey Open File Report entitled: The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota. The data...
Filter Total Items: 318
The effects of management practices on grassland birds—Field Sparrow (Spizella pusilla) The effects of management practices on grassland birds—Field Sparrow (Spizella pusilla)
Keys to Field Sparrow (Spizella pusilla) management include providing shrub-dominated edge habitat adjacent to grasslands or grasslands with a shrub component (both of which must include dense grass and moderately high litter cover) and avoiding disturbances that eliminate woody vegetation. Field Sparrows have been reported to use habitats with 16–134 centimeters (cm) vegetation height...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Betty R. Euliss
The effects of management practices on grassland birds—Loggerhead Shrike (Lanius ludovicianus) The effects of management practices on grassland birds—Loggerhead Shrike (Lanius ludovicianus)
The key to Loggerhead Shrike (Lanius ludovicianus) management is providing open grasslands with scattered trees and shrubs for foraging, nesting, and perching. Loggerhead Shrikes have been reported to use habitats with 20–266 centimeters (cm) vegetation height, greater than or equal to (≥) 10 percent grass cover, 3–48 percent forb cover, 2–25 percent shrub cover, 3–40 percent bare ground...
Authors
Lawrence D. Igl, Jill A. Shaffer, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Amy L. Zimmerman, Jason P. Thiele, Betty R. Euliss
The effects of management practices on grassland birds—Bobolink (Dolichonyx oryzivorus) The effects of management practices on grassland birds—Bobolink (Dolichonyx oryzivorus)
Keys to Bobolink (Dolichonyx oryzivorus) management are providing large areas of suitable habitat (for example, native or tame grasslands of moderate vegetative height and density, low shrub density, and moderate litter and forb cover), and protecting nesting habitat from disturbance during the breeding season. Bobolinks have been reported to use habitats with 10–166 centimeters (cm)...
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
Marshbird response to herbicide control of cattail in northwestern Minnesota Marshbird response to herbicide control of cattail in northwestern Minnesota
Wetlands provide essential habitat for a wide variety of wildlife species. In the once wetland-rich Prairie Pothole Region and adjacent areas of central North America, many wetlands have been converted to agricultural production. Many remaining wetlands experience ecological change via the invasion and spread of non-native plant species, such as non-native narrowleaf (Typha angustifolia)...
Authors
Nina M. Hill, Douglas H. Johnson, Thomas R. Cooper, Althea A. Archer, David E. Andersen
Converting CRP grasslands to cropland, grazing land, or hayland: Effects on breeding bird abundances in the northern Great Plains of the United States Converting CRP grasslands to cropland, grazing land, or hayland: Effects on breeding bird abundances in the northern Great Plains of the United States
Recent declines of grassland bird populations in North America are linked to habitat loss and fragmentation associated with agricultural practices. One tool used to conserve soil, water and wildlife habitat on agricultural fields is the U.S. Department of Agriculture’s Conservation Reserve Program (CRP), the largest agricultural conservation program in the United States. Managers and
Authors
Lawrence Igl, Deborah A. Buhl, Max Post van der Burg, Douglas H. Johnson
Application of habitat association models across regions: Useful explanatory power retained in wetland bird case study Application of habitat association models across regions: Useful explanatory power retained in wetland bird case study
Species often exhibit regionally specific habitat associations, so habitat association models developed in one region might not be accurate or even appropriate for other regions. Three programs to survey wetland-breeding birds covering (respectively) Great Lakes coastal wetlands, inland Great Lakes wetlands, and the Prairie Pothole Region offer an opportunity to test whether regionally...
Authors
Lisa H. Elliott, Annie M. Bracey, Gerald J. Niemi, Douglas H. Johnson, Thomas M. Gehring, Erin E. Gnass Giese, Giuseppe E. Fiorino, Robert W. Howe, Gregory A. Lawrence, Christopher J. Norment, Douglas C. Tozer, Lawrence Igl
Science and Products
Conversion of CRP Grasslands to Cropland, Grazing Lands, or Hayland: Effects on Breeding Bird Abundances in the Northern Great Plains, 1996-2017, data release Conversion of CRP Grasslands to Cropland, Grazing Lands, or Hayland: Effects on Breeding Bird Abundances in the Northern Great Plains, 1996-2017, data release
The data set consists of bird abundance data collected in undisturbed grassland fields enrolled in the Conservation Reserve Program (CRP) and former CRP fields that were converted to cropland, grazing land, or hayland in nine counties in four states (Montana, North Dakota, South Dakota, and Minnesota) in the northern Great Plains. The study was initiated in 1990, but data were only...
The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota dataset The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota dataset
The data set consists of data collected in 1995, 1996, and 1997 in wetlands in the Prairie Pothole Region of North Dakota and South Dakota. The data were summarized and used in the analysis for a U.S. Geological Survey Open File Report entitled: The influence of local- and landscape-level factors on wetland breeding birds in the Prairie Pothole Region of North and South Dakota. The data...
Filter Total Items: 318
The effects of management practices on grassland birds—Field Sparrow (Spizella pusilla) The effects of management practices on grassland birds—Field Sparrow (Spizella pusilla)
Keys to Field Sparrow (Spizella pusilla) management include providing shrub-dominated edge habitat adjacent to grasslands or grasslands with a shrub component (both of which must include dense grass and moderately high litter cover) and avoiding disturbances that eliminate woody vegetation. Field Sparrows have been reported to use habitats with 16–134 centimeters (cm) vegetation height...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Betty R. Euliss
The effects of management practices on grassland birds—Loggerhead Shrike (Lanius ludovicianus) The effects of management practices on grassland birds—Loggerhead Shrike (Lanius ludovicianus)
The key to Loggerhead Shrike (Lanius ludovicianus) management is providing open grasslands with scattered trees and shrubs for foraging, nesting, and perching. Loggerhead Shrikes have been reported to use habitats with 20–266 centimeters (cm) vegetation height, greater than or equal to (≥) 10 percent grass cover, 3–48 percent forb cover, 2–25 percent shrub cover, 3–40 percent bare ground...
Authors
Lawrence D. Igl, Jill A. Shaffer, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Amy L. Zimmerman, Jason P. Thiele, Betty R. Euliss
The effects of management practices on grassland birds—Bobolink (Dolichonyx oryzivorus) The effects of management practices on grassland birds—Bobolink (Dolichonyx oryzivorus)
Keys to Bobolink (Dolichonyx oryzivorus) management are providing large areas of suitable habitat (for example, native or tame grasslands of moderate vegetative height and density, low shrub density, and moderate litter and forb cover), and protecting nesting habitat from disturbance during the breeding season. Bobolinks have been reported to use habitats with 10–166 centimeters (cm)...
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
Marshbird response to herbicide control of cattail in northwestern Minnesota Marshbird response to herbicide control of cattail in northwestern Minnesota
Wetlands provide essential habitat for a wide variety of wildlife species. In the once wetland-rich Prairie Pothole Region and adjacent areas of central North America, many wetlands have been converted to agricultural production. Many remaining wetlands experience ecological change via the invasion and spread of non-native plant species, such as non-native narrowleaf (Typha angustifolia)...
Authors
Nina M. Hill, Douglas H. Johnson, Thomas R. Cooper, Althea A. Archer, David E. Andersen
Converting CRP grasslands to cropland, grazing land, or hayland: Effects on breeding bird abundances in the northern Great Plains of the United States Converting CRP grasslands to cropland, grazing land, or hayland: Effects on breeding bird abundances in the northern Great Plains of the United States
Recent declines of grassland bird populations in North America are linked to habitat loss and fragmentation associated with agricultural practices. One tool used to conserve soil, water and wildlife habitat on agricultural fields is the U.S. Department of Agriculture’s Conservation Reserve Program (CRP), the largest agricultural conservation program in the United States. Managers and
Authors
Lawrence Igl, Deborah A. Buhl, Max Post van der Burg, Douglas H. Johnson
Application of habitat association models across regions: Useful explanatory power retained in wetland bird case study Application of habitat association models across regions: Useful explanatory power retained in wetland bird case study
Species often exhibit regionally specific habitat associations, so habitat association models developed in one region might not be accurate or even appropriate for other regions. Three programs to survey wetland-breeding birds covering (respectively) Great Lakes coastal wetlands, inland Great Lakes wetlands, and the Prairie Pothole Region offer an opportunity to test whether regionally...
Authors
Lisa H. Elliott, Annie M. Bracey, Gerald J. Niemi, Douglas H. Johnson, Thomas M. Gehring, Erin E. Gnass Giese, Giuseppe E. Fiorino, Robert W. Howe, Gregory A. Lawrence, Christopher J. Norment, Douglas C. Tozer, Lawrence Igl