Other International and Area Studies Commons^™

Area Requirements Of Grassland Birds: A Regional Perspective, Douglas Johnson, Lawrence Igl

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Area requirements of grassland birds ha ve not been studied except in tallgrass prairie. We studied the relation between both species-occurrence and density and patch size by conducting 699 fixed-radius point counts of 15 bird species on 303 restored grassland areas in nine counties in four northern Great Plains states. Northern Harrier (Circus cyaneus), Sedge Wren (Cistothorus platensis, Clay-colored Sparrow (Spizella pallida), Grasshopper Sparrow (Ammodramus savannarum), Baird’s Sparrow ( Ammodramus bairdii)), Le Conte’s Sparrow (Ammodramus leconteii), and Bobolink (Dolichonyx oryzivorus) were shown to favor larger grassland patches …

Effects Of Management Practices On Grassland Birds: Short-Eared Owl, Jill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Short-Eared Owl (Asio flammeus):
Breeding range
Suitable habitat
Prey habitat
Area requirements
Brown-headed Cowbird brood parasitism
Breeding-season phenology and site fidelity
Species’ response to management
Management Recommendations
Habitat Characteristics

Book Review: Research Techniques In Animal Ecology: Controversies And Consequences, Douglas H. Johnson

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

This edited volume covers a number of techniques widely used in animal ecology. It is intended not so much as a handbook, though, as a critique. Authors of each chapter present an overview of the techniques pertinent to the topic of that chapter, then point out weaknesses and strengths of those techniques. This book is the result of a workshop held in Sicily in late 1996, which involved a small group of scientists and a limited audience of 75. The authors, noted European and North American scientists, have clearly expended the effort to synthesize a lot of information for the …

Mitochondrial Phylogeography, Subspecific Taxonomy, And Conservation Genetics Of Sandhill Cranes (Grus Canadensis; Aves: Gruidae), Judith M. Rhymer, Matthew G. Fain, Jane E. Austin, Douglas H. Johnson, Carey Krajewski

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Six subspecies of sandhill cranes (Grus canadensis) have been denoted based on perceived morphological and/or breeding locality differences among them. Three subspecies are migratory, breeding from the high arctic in North America and Siberia (lesser sandhill, G. c. canadensis), south through central Canada (Canadian sandhill, G. c. rowani) and into the northern United States (greater sandhill, G. c. tabida). A review of sandhill crane taxonomy indicates that the size variation, on the basis of which these subspecies were named, may be clinal and not diagnostic. The other three subspecies, all listed as endangered or threatened, …

Duck Populations As Indicators Of Landscape Condition In The Prairie Pothole Region, Jane Austin, Thomas K. Buhl, Glenn R. Guntenspergen, Wayne Norling, H. Thomas Sklebar

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

The Prairie Pothole Region of the northern Great Plains is an important region for waterfowl production because of the abundance of shallow wetlands. The ecological significance of the region and impacts from intensive agriculture prompted the U.S. Environmental Protection Agency to select it as one of the first areas for developing and evaluating ecological indicators of wetland condition. We examined hypothesized relations between indicators of landscape and wetland conditions and waterfowl abundance on 45 40 km² study sites in North Dakota for 1995–1996. Landscape condition was defined a priori as the ratio of cropland area to total upland area …

Evaluation Of The Bird Conservation Area Concept In The Northern Tallgrass Prairie: Annual Report 2001, Maiken Winter, Douglas H. Johnson, Jill A. Dechant, Therese M. Donovan, W. Daniel Svedarsky

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

In 1998 we initiated a test of the concept that Bird Conservation Areas (BCA's) can maintain populations of breeding grassland birds. The underlying hypothesis is that large core areas of quality habitat (such as native prairie) that are surrounded by neutral habitats (such as small-grain fields), and that are isolated from hostile habitats (such as woody vegetation) will result in avian densities and reproductive rates sufficient to at least maintain population levels of breeding birds. This concept was proposed by the Midwest Working Group of Partners In Flight (e.g., Pashley and Fitzgerald 1996) and endorsed also by the Prairie Pothole …

Effects Of Management Practices On Grassland Birds: Bobolink, Jill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Amy L. Zimmerman, Betty R. Euliss

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Bobolink (Dolichonyx oryzivorus):
Breeding range
Suitable habitat
Area requirements
Brown-headed Cowbird brood parasitism
Breeding-season phenology and site fidelity
Species’ response to management
Management Recommendations
Characteristics

Estimated Areal Extent Of Colonies Of Black-Tailed Prairie Dogs In The Northern Great Plains, John Sidle, Douglas Johnson, Betty Euliss

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

During 1997-1998, we undertook an aerial survey, with an aerial line-intercept technique, to estimate the extent of colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the northern Great Plains states of Nebraska, North Dakota, South Dakota, and Wyoming. We stratified the survey based on knowledge of colony locations, computed 2 types of estimates for each stratum, and combined ratio estimates for high-density strata with average density estimates for low-density strata. Estimates of colony areas for black-tailed prairie dogs were derived from the average percentages of lines intercepting prairie dog colonies and ratio estimators. We selected the best estimator …

Effects Of Management Practices On Grassland Birds: Sprague’S Pipit, Jill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Sprague’s Pipit (Anthus spragueii):
Breeding range
Suitable habitat
Area requirements
Brown-headed Cowbird brood parasitism
Breeding-season phenology and site fidelity
Species’ response to management
Management Recommendations
Habitat Characteristics

Effects Of Management Practices On Grassland Birds: Marbled Godwit, Jill A. Dechant, Marriah L. Sondreal, Douglas H. Johnson, Lawrence D. Igl, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Marbled Godwit (Limosa fedoa):
Breeding range
Suitable habitat
Area requirements
Brown-headed Cowbird brood parasitism
Breeding-season phenology and site fidelity
Species’ response to management
Management Recommendations
Habitat Characteristics

Shaping Asylum: The Power Of Language, Teresa Tellechea

Human Rights & Human Welfare

A review of Arguing about Asylum: The Complexity of Refugee Debates in Europe by Niklaus Steiner. New York: St. Martin’s Press, 2000. 186pp.

It is June 1992. War has broken out in the Balkans. When we leave Madrid by car for the frontlines in Mostar, Bosnia-Herzegovina, Bosnians and Croats are defending themselves against Serbians. Our license plates begin with SA, the abbreviation for Salamanca, Spain, which is taken to mean Sarajevo, which is currently under siege. On the road to Mostar we are greeted as heroes having been able to escape from SArajevo, though we are two free-lance photographers from …