Douglas Johnson (Former Employee)
Science and Products
Filter Total Items: 318
Estimating survival rates from banding of adult and juvenile birds Estimating survival rates from banding of adult and juvenile birds
The restrictive assumptions required by most available methods for estimating survival probabilities render them unsuitable for analyzing real banding data. A model is proposed which allows survival rates and recovery rates to vary with the calendar year, and also allows juveniles to have rates different from adults. In addition to survival rates and recovery rates, the differential...
Authors
Douglas H. Johnson
Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII
Abstract has not been submitted
Authors
Douglas H. Johnson
A preliminary classification of wetland plant communities in north-central Minnesota A preliminary classification of wetland plant communities in north-central Minnesota
A classification of wetland plant communities was developed for a study area in north-central Minnesota in order to analyze data on waterfowl use of habitat that were gathered by radio telemetry. The classification employs features of several earlier classifications in addition to new classes for bogs and lakeshore communities. Brief descriptions are given for each community, and the...
Authors
L.M. Cowardin, Douglas H. Johnson
Thirty-seventh breeding bird census - mixed prairie Thirty-seventh breeding bird census - mixed prairie
Abstract has not been submitted
Authors
Douglas H. Johnson, Gary L. Krapu
Racial composition of migrant populations of sandhill cranes in the northern plains states Racial composition of migrant populations of sandhill cranes in the northern plains states
Abstract has not been submitted
Authors
Douglas H. Johnson, R. E. Stewart
The age distribution of environmental periodicals The age distribution of environmental periodicals
Abstract has not been submitted
Authors
Douglas H. Johnson
Science and Products
Filter Total Items: 318
Estimating survival rates from banding of adult and juvenile birds Estimating survival rates from banding of adult and juvenile birds
The restrictive assumptions required by most available methods for estimating survival probabilities render them unsuitable for analyzing real banding data. A model is proposed which allows survival rates and recovery rates to vary with the calendar year, and also allows juveniles to have rates different from adults. In addition to survival rates and recovery rates, the differential...
Authors
Douglas H. Johnson
Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII
Abstract has not been submitted
Authors
Douglas H. Johnson
A preliminary classification of wetland plant communities in north-central Minnesota A preliminary classification of wetland plant communities in north-central Minnesota
A classification of wetland plant communities was developed for a study area in north-central Minnesota in order to analyze data on waterfowl use of habitat that were gathered by radio telemetry. The classification employs features of several earlier classifications in addition to new classes for bogs and lakeshore communities. Brief descriptions are given for each community, and the...
Authors
L.M. Cowardin, Douglas H. Johnson
Thirty-seventh breeding bird census - mixed prairie Thirty-seventh breeding bird census - mixed prairie
Abstract has not been submitted
Authors
Douglas H. Johnson, Gary L. Krapu
Racial composition of migrant populations of sandhill cranes in the northern plains states Racial composition of migrant populations of sandhill cranes in the northern plains states
Abstract has not been submitted
Authors
Douglas H. Johnson, R. E. Stewart
The age distribution of environmental periodicals The age distribution of environmental periodicals
Abstract has not been submitted
Authors
Douglas H. Johnson