Deanna Dawson
Deanna is a emeritus with the Eastern Ecological Science Center located at Laurel, MD.
An experienced field ornithologist, her current research uses remote sensing techniques to sample the spatiotemporal distribution of birds, primarily during migration periods. She collaborates in research that analyzes data from weather surveillance radars to map the densities of nocturnal migrants at daytime stopover sites, and uses acoustic data to quantify and model the abundance of migrants aloft. She also works on methods to estimate animal densities from sounds recorded on microphone arrays, applying them to recordings of bird song made across the Patuxent Research Refuge during the nesting season.
Science and Products
Filter Total Items: 48
Migration banding data: A source of information on bird population trends?
No abstract available.
Authors
D.K. Dawson
Waterbird use of high saltmarsh ponds created for open marsh water management (mosquito control)
The excavation of small (1 ha) natural ponds or pannes or adjacent tidal creeks. Recent modifications in pond construction in Delaware and New Jersey allow for shallower, more sloping basins which should enhance use by waterfowl and shorebirds while still ensuring a water reservoir to support fish populations.
Authors
R.M. Erwin, M.A. Howe, D.K. Dawson
Atlas de aves: Un metodo para documentar distribucion y seguir poblaciones
Los Atlas de Aves son proyectos nacionales o regionalies para trazar en mapas la distribucion en reproduccion de cada especie de ave. Ese procedimiento se esta usando en Europa, Australia, Nueva Zelanda, Norteamerica, y partes de Africa. El tama?o de los cuadrados varia de medio grado de latitud y Iongitud hasta 5 x 5 km. El trabajo de campo de cada proyecto exige aproxlmadamente cinco a?os, pero
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson
Comparisons of winter bird populations in extensive neotropical forest and in isolated fragments
No abstract available.
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson, R. Coates-Estrada, J. Colon, F. Espinoza, J. Rodriguez, R. Sutton, T. Vargas, Dieter Weyer
Comparison of neotropical winter bird populations in isolated patches versus extensive forest
Wintering birds were captured with mist nets at 12 pairs of forested sites in the New World tropics in 1984 and 1985 to compare populations in small isolated woodlands (generally 5-50 ha) with those in extensive forests (> 1,000 ha). Net-hours of effort were similar in large and small sites, as were total birds captured and banded, but species composition was very different. Members of the Todida
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson, J. Colon, F. Espinoza, J. Rodriguez, R. Sutton, T. Vargas
A search for stability gradients in North American breeding bird communities
To search for the existence of stability gradients in North American breeding land bird communities we operationally defined stability (after Jarvinen 1979) as year-to-year persistence in species composition and distribution of species abundances. From the census data for 174 study plots we derived nine indices that estimate the annual variability of species composition, the species abundance dist
Authors
B.R. Noon, D.K. Dawson, J.P. Kelly
Brewer's sparrow (Spizella breweri)
Many of the known recoverable coal reserves in the Western United States occur within the breeding and wintering range of the Brewer's sparrow. Although the species is common throughout much of its breeding range, local and regional populations may be adversely affected due to mining-related disturbances and habitat loss. The species may serve as a valuable indicator of the impacts of surface-mini
Authors
D.K. Dawson
Sampling in rugged terrain
Work in rugged terrain poses some unique problems that should be considered before research is initiated. Besides the obvious physical difficulties of crossing uneven terrain, topography can influence the bird species? composition of a forest and the observer's ability to detect birds and estimate distances. Census results can also be affected by the slower rate of travel on rugged terrain. Densit
Authors
D.K. Dawson
Deer distribution in relation to wolf pack territory edges
No abstract available.
Authors
L. D. Mech, D.K. Dawson, J.M. Peek, M. Korb, L.L. Rogers
Consistency in habitat preference of forest bird species
The important management conclusion that follows from our results is that the habitat requirements of most forest bird species, although quite specific for each species, apply generally throughout their breeding ranges. Thus a habitat management program that proves beneficial in one part of the breeding range of a species has a high likelihood of success in an area hundreds of kilometers away.
Authors
B.R. Noon, D.K. Dawson, D.B. Inkley, C.S. Robbins, S.H. Anderson
Coastal and Marine Bird Data Base
Summary: This report discusses the development of a coastal and marine bird data base at the Migratory Bird and Habitat Research Laboratory. The system is compared with other data bases, and suggestions for future development, such as possible adaptations for other taxonomic groups, are included. The data base is based on the Statistical Analysis System but includes extensions programmed i
Authors
S.H. Anderson, P.H. Geissler, D.K. Dawson
Bird communities associated with succession and management of lowland conifer forests
Data from published bird censuses were used to determine changes in avian communities in relation to plant succession, fire, type conversion, and timber management practices in lowland conifer forests in the northeastern United States. With modifications in current logging practices, habitat for the bird species that nest in undisturbed stands can be provided. Management guidelines are recommend
Authors
D.K. Dawson
Science and Products
Filter Total Items: 48
Migration banding data: A source of information on bird population trends?
No abstract available.
Authors
D.K. Dawson
Waterbird use of high saltmarsh ponds created for open marsh water management (mosquito control)
The excavation of small (1 ha) natural ponds or pannes or adjacent tidal creeks. Recent modifications in pond construction in Delaware and New Jersey allow for shallower, more sloping basins which should enhance use by waterfowl and shorebirds while still ensuring a water reservoir to support fish populations.
Authors
R.M. Erwin, M.A. Howe, D.K. Dawson
Atlas de aves: Un metodo para documentar distribucion y seguir poblaciones
Los Atlas de Aves son proyectos nacionales o regionalies para trazar en mapas la distribucion en reproduccion de cada especie de ave. Ese procedimiento se esta usando en Europa, Australia, Nueva Zelanda, Norteamerica, y partes de Africa. El tama?o de los cuadrados varia de medio grado de latitud y Iongitud hasta 5 x 5 km. El trabajo de campo de cada proyecto exige aproxlmadamente cinco a?os, pero
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson
Comparisons of winter bird populations in extensive neotropical forest and in isolated fragments
No abstract available.
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson, R. Coates-Estrada, J. Colon, F. Espinoza, J. Rodriguez, R. Sutton, T. Vargas, Dieter Weyer
Comparison of neotropical winter bird populations in isolated patches versus extensive forest
Wintering birds were captured with mist nets at 12 pairs of forested sites in the New World tropics in 1984 and 1985 to compare populations in small isolated woodlands (generally 5-50 ha) with those in extensive forests (> 1,000 ha). Net-hours of effort were similar in large and small sites, as were total birds captured and banded, but species composition was very different. Members of the Todida
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson, J. Colon, F. Espinoza, J. Rodriguez, R. Sutton, T. Vargas
A search for stability gradients in North American breeding bird communities
To search for the existence of stability gradients in North American breeding land bird communities we operationally defined stability (after Jarvinen 1979) as year-to-year persistence in species composition and distribution of species abundances. From the census data for 174 study plots we derived nine indices that estimate the annual variability of species composition, the species abundance dist
Authors
B.R. Noon, D.K. Dawson, J.P. Kelly
Brewer's sparrow (Spizella breweri)
Many of the known recoverable coal reserves in the Western United States occur within the breeding and wintering range of the Brewer's sparrow. Although the species is common throughout much of its breeding range, local and regional populations may be adversely affected due to mining-related disturbances and habitat loss. The species may serve as a valuable indicator of the impacts of surface-mini
Authors
D.K. Dawson
Sampling in rugged terrain
Work in rugged terrain poses some unique problems that should be considered before research is initiated. Besides the obvious physical difficulties of crossing uneven terrain, topography can influence the bird species? composition of a forest and the observer's ability to detect birds and estimate distances. Census results can also be affected by the slower rate of travel on rugged terrain. Densit
Authors
D.K. Dawson
Deer distribution in relation to wolf pack territory edges
No abstract available.
Authors
L. D. Mech, D.K. Dawson, J.M. Peek, M. Korb, L.L. Rogers
Consistency in habitat preference of forest bird species
The important management conclusion that follows from our results is that the habitat requirements of most forest bird species, although quite specific for each species, apply generally throughout their breeding ranges. Thus a habitat management program that proves beneficial in one part of the breeding range of a species has a high likelihood of success in an area hundreds of kilometers away.
Authors
B.R. Noon, D.K. Dawson, D.B. Inkley, C.S. Robbins, S.H. Anderson
Coastal and Marine Bird Data Base
Summary: This report discusses the development of a coastal and marine bird data base at the Migratory Bird and Habitat Research Laboratory. The system is compared with other data bases, and suggestions for future development, such as possible adaptations for other taxonomic groups, are included. The data base is based on the Statistical Analysis System but includes extensions programmed i
Authors
S.H. Anderson, P.H. Geissler, D.K. Dawson
Bird communities associated with succession and management of lowland conifer forests
Data from published bird censuses were used to determine changes in avian communities in relation to plant succession, fire, type conversion, and timber management practices in lowland conifer forests in the northeastern United States. With modifications in current logging practices, habitat for the bird species that nest in undisturbed stands can be provided. Management guidelines are recommend
Authors
D.K. Dawson