Douglas Johnson (Former Employee)
Science and Products
Filter Total Items: 318
Some Bayesian statistical techniques useful in estimating frequency and density Some Bayesian statistical techniques useful in estimating frequency and density
No abstract available.
Authors
Douglas H. Johnson
Impact of red fox predation on the sex ratio of prairie mallards Impact of red fox predation on the sex ratio of prairie mallards
No abstract available.
Authors
Douglas H. Johnson, Alan B. Sargeant
Impact of red fox predation on the sex ratio of prairie mallards Impact of red fox predation on the sex ratio of prairie mallards
No abstract available.
Authors
Douglas H. Johnson, A.B. Sargeant
Early little blue heron in Meeker County Early little blue heron in Meeker County
Abstract has not been submitted
Authors
Douglas H. Johnson
Breeding bird populations of selected grasslands in east central North Dakota -- 1976 - Kentucky blue grass prairie and mixed prairie I-V Breeding bird populations of selected grasslands in east central North Dakota -- 1976 - Kentucky blue grass prairie and mixed prairie I-V
Abstract has not been submitted
Authors
Douglas H. Johnson
Book Review: Minnesota's birds: where, when and how many by Janet C. Green and Robert B. Janssen Book Review: Minnesota's birds: where, when and how many by Janet C. Green and Robert B. Janssen
No abstract available.
Authors
Douglas H. Johnson
[Book review] One Time Harvest: Reflections on Coal and our Future, by Mike Jacobs [Book review] One Time Harvest: Reflections on Coal and our Future, by Mike Jacobs
Review of: One time harvest: reflections on coal and our future. Mike Jacobs. 1975. Indiana University. 300 p.
Authors
Douglas H. Johnson
Cardinal and mockingbird in Jamestown, North Dakota Cardinal and mockingbird in Jamestown, North Dakota
Abstract has not been submitted
Authors
Douglas H. Johnson, J.E. Johnson
Age determination of female redhead ducks Age determination of female redhead ducks
Eighty-seven fall-collected wings from female redhead ducks (Aythya americana) were assigned to the adult or juvenile group based on 'tertial' and 'tertial covert' shape and wear. To obtain spring age-related characters from these fall-collected groupings, we considered parameters of flight feathers retained until after the first breeding season. Parameters measured included: markings on...
Authors
C.W. Dane, Douglas H. Johnson
Fitting Richards' curve to data of diverse origins Fitting Richards' curve to data of diverse origins
Published techniques for fitting data to nonlinear growth curves are briefly reviewed, most techniques require knowledge of the shape of the curve. A flexible growth curve developed by Richards (1959) is discussed as an alternative when the shape is unknown. The shape of this curve is governed by a specific parameter which can be estimated from the data. We describe in detail the fitting...
Authors
Douglas H. Johnson, A.B. Sargeant, S.H. Allen
Migration of birds in North Dakota during fall 1974 Migration of birds in North Dakota during fall 1974
Abstract has not been submitted
Authors
J. T. Lokemoen, Douglas H. Johnson
Breeding bird populations of selected grasslands in east-central North Dakota -- 1975 - Kentucky blue grass prairie and mixed prairie I-V Breeding bird populations of selected grasslands in east-central North Dakota -- 1975 - Kentucky blue grass prairie and mixed prairie I-V
Abstract has not been submitted
Authors
Douglas H. Johnson
Science and Products
Filter Total Items: 318
Some Bayesian statistical techniques useful in estimating frequency and density Some Bayesian statistical techniques useful in estimating frequency and density
No abstract available.
Authors
Douglas H. Johnson
Impact of red fox predation on the sex ratio of prairie mallards Impact of red fox predation on the sex ratio of prairie mallards
No abstract available.
Authors
Douglas H. Johnson, Alan B. Sargeant
Impact of red fox predation on the sex ratio of prairie mallards Impact of red fox predation on the sex ratio of prairie mallards
No abstract available.
Authors
Douglas H. Johnson, A.B. Sargeant
Early little blue heron in Meeker County Early little blue heron in Meeker County
Abstract has not been submitted
Authors
Douglas H. Johnson
Breeding bird populations of selected grasslands in east central North Dakota -- 1976 - Kentucky blue grass prairie and mixed prairie I-V Breeding bird populations of selected grasslands in east central North Dakota -- 1976 - Kentucky blue grass prairie and mixed prairie I-V
Abstract has not been submitted
Authors
Douglas H. Johnson
Book Review: Minnesota's birds: where, when and how many by Janet C. Green and Robert B. Janssen Book Review: Minnesota's birds: where, when and how many by Janet C. Green and Robert B. Janssen
No abstract available.
Authors
Douglas H. Johnson
[Book review] One Time Harvest: Reflections on Coal and our Future, by Mike Jacobs [Book review] One Time Harvest: Reflections on Coal and our Future, by Mike Jacobs
Review of: One time harvest: reflections on coal and our future. Mike Jacobs. 1975. Indiana University. 300 p.
Authors
Douglas H. Johnson
Cardinal and mockingbird in Jamestown, North Dakota Cardinal and mockingbird in Jamestown, North Dakota
Abstract has not been submitted
Authors
Douglas H. Johnson, J.E. Johnson
Age determination of female redhead ducks Age determination of female redhead ducks
Eighty-seven fall-collected wings from female redhead ducks (Aythya americana) were assigned to the adult or juvenile group based on 'tertial' and 'tertial covert' shape and wear. To obtain spring age-related characters from these fall-collected groupings, we considered parameters of flight feathers retained until after the first breeding season. Parameters measured included: markings on...
Authors
C.W. Dane, Douglas H. Johnson
Fitting Richards' curve to data of diverse origins Fitting Richards' curve to data of diverse origins
Published techniques for fitting data to nonlinear growth curves are briefly reviewed, most techniques require knowledge of the shape of the curve. A flexible growth curve developed by Richards (1959) is discussed as an alternative when the shape is unknown. The shape of this curve is governed by a specific parameter which can be estimated from the data. We describe in detail the fitting...
Authors
Douglas H. Johnson, A.B. Sargeant, S.H. Allen
Migration of birds in North Dakota during fall 1974 Migration of birds in North Dakota during fall 1974
Abstract has not been submitted
Authors
J. T. Lokemoen, Douglas H. Johnson
Breeding bird populations of selected grasslands in east-central North Dakota -- 1975 - Kentucky blue grass prairie and mixed prairie I-V Breeding bird populations of selected grasslands in east-central North Dakota -- 1975 - Kentucky blue grass prairie and mixed prairie I-V
Abstract has not been submitted
Authors
Douglas H. Johnson