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Author : Michael J. Armbruster
Publisher : Unknown
Page : 32 pages
File Size : 48,9 Mb
Release : 1990
Category : Cranes (Birds)
ISBN : MINN:31951D008651777
Author : Michael J. Armbruster,U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 16 pages
File Size : 49,7 Mb
Release : 1990
Category : Cranes (Birds)
ISBN : LCCN:91156756
Information is drawn from the literature and the professional opinions of behaviorists and habitat use experts, and used to describe requirements of whooping cranes (Grus americana) during migration. Migration strategies of North American cranes are compared and inferences drawn. The requirements for usable food and cover are examined and described quantitatively for evaluations that focus on roosting habitat. When possible, information is presented in terms of both traditional and nontraditional stopover areas. Perceived problems with the data and their interpretation, are discussed, and issues requiring further study are identified. Relations presented do not represent selection, as defined by use and availability studies, but rather should be interpreted as a formalized synthesis of information directed by the opinions of recognized authorities in crane biology. Site-specific evaluation criteria address issues of visibility, water depth, wetland size, and disturbance; suitability relations are presented for each habitat component. Horizontal visibility is defined as a straight-line distance to the nearest obstruction greater than 1 m in height, and that distance must be greater than 20 m before a site can be considered as potential habitat. Optimum water depth is considered to be less than or equal to 30 cm. The minimum wetland size considered usable for roosting is 0.04 ha. Disturbances are treated as zones of influence around selected features with no zone having a minimum width of less than 100 m. Broad-scale evaluations can employ information readily available from inventories or surveys such as wetland system, class, water regime, and size, to rapidly screen potential habitat suitability over large geographic areas. Suggestions for application of evaluation criteria are presented.
Author : Michael J. Armbruster,U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 28 pages
File Size : 45,8 Mb
Release : 1990
Category : Cranes (Birds)
ISBN : UOM:39015086474908
Author : National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Board on Environmental Studies and Toxicology,Committee on Endangered and Threatened Species in the Platte River Basin
Publisher : National Academies Press
Page : 337 pages
File Size : 52,5 Mb
Release : 2005-02-24
Category : Science
ISBN : 9780309092302
The tension between wildlife protection under the Endangered Species Act and water management in the Platte River Basin has existed for more than 25 years. The Platte River provides important habitat for migratory and breeding birds, including three endangered or threatened species: the whooping crane, the northern Great Plains population of the piping plover, and the interior least tern. The leading factors attributed to the decline of the cranes are historical overhunting and widespread habitat destruction and, for the plovers and terns, human interference during nesting and the loss of riverine nesting sites in open sandy areas that have been replaced with woodlands, sand and gravel mines, housing, and roadways. Extensive damming has disrupted passage of the endangered pallid sturgeon and resulted in less suitable habitat conditions such as cooler stream flows, less turbid waters, and inconsistent flow regimes. Commercial harvesting, now illegal, also contributed to the decline of the sturgeon. Endangered and Threatened Species of the Platte River addresses the habitat requirements for these federally protected species. The book further examines the scientific aspects of the U.S. Fish and Wildlife Service's instream-flow recommendations and habitat suitability guidelines and assesses the science concerning the connections among the physical systems of the river as they relate to species' habitats.
Author : Marshall A. Howe,U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 42 pages
File Size : 45,5 Mb
Release : 1989
Category : Animal radio tracking
ISBN : IND:30000050558463
Study of the migration stopovers, breeding behavior, and survival rates of the endangered whooping cranes (Grus americana) between fall 1981-83 and spring 1983-84. Distribution pattern of radio-tracked birds observed to be greatly different from distributions derived from opportunistic sightings. observations carried out between Aransas National Wildlife Refuge, Texas, and central Saskatchewan.
Author : Anonim
Publisher : Unknown
Page : 768 pages
File Size : 42,5 Mb
Release : 1990
Category : Electronic
ISBN : WISC:89037101656
Author : Anonim
Publisher : Academic Press
Page : 538 pages
File Size : 50,6 Mb
Release : 2018-09-04
Category : Science
ISBN : 9780128035856
Whooping Cranes: Biology and Conservation covers one of the most endangered birds in North America, and the subject of intense research and highly visible conservation activity. The volume summarizes current biological information on Whooping Cranes and provides the basis for future research necessary for conservation of this species. This edited volume concentrates on work completed in the past 20 years in the areas of population biology, behavior and social structure, habitat use, disease and health, captive breeding, and Whooping Crane conservation. Much of the information presented comes from the study and management of remnant and reintroduced populations of Whooping Cranes in the field; some information is from experimentation and breeding of captive Whooping Cranes. Whooping Cranes: Biology and Conservation seeks to inform and galvanize action dedicated to meeting the challenges faced by Whooping Crane managers and conservationists. Thus, it describes one model of endangered species conservation and restoration that will interest a wide audience: professionals that work on cranes; researchers in the fields of small population biology, endangered species, and avian ecology; wildlife veterinarians and those involved in avian husbandry; administrators of management agencies or conservation organizations; conservationists in other fields; teachers of conservation biology or ornithology and their students; and the educated general public. Presents a comprehensive treatment of the biology and ecology of Whooping Cranes, including biology of both remnant and reintroduced populations of Whooping Cranes Describes efforts over the past 45 years on conservation and the challenges of reintroducing an endangered species Includes chapters from a variety of disciplinary and scale perspectives, ranging from evolution, to population ecology, behavior, habitat use, large landscape conservation, conflict, and conservation efforts Features contributions that are readable, yet technically complete and fully referenced Provides an example of partnership and collegial action that integrates information produced by scientific research and operational wildlife management Edited and written by the leading Whooping Crane scholars and practitioners focused on this high-profile species of conservation concern
Author : Anonim
Publisher : Unknown
Page : 1482 pages
File Size : 53,5 Mb
Release : 2008
Category : Electronic
ISBN : NWU:35556034519546
Author : Paul A. Johnsgard
Publisher : University Press of Colorado
Page : 384 pages
File Size : 55,8 Mb
Release : 2020-01-27
Category : Nature
ISBN : 9781607324379
A look at the natural history, biology, and conservation issues faced by cranes in North America, featuring beautiful photos. Accompanied by the stunning photography of Thomas D. Mangelsen, A Chorus of Cranes details the natural history, biology, and conservation issues surrounding the abundant sandhill crane and the endangered whooping crane in North America. Author Paul A. Johnsgard, one of the leading authorities on cranes and crane biology, describes the fascinating social behaviors, beautiful natural habitats, and grueling seasonal migrations that have stirred the hearts of people as far back as medieval times and garnered the crane a place in folklore and mythology across continents. Johnsgard has substantially updated and significantly expanded his 1991 work Crane Music, incorporating new information on the biology and status of these two North American cranes and providing abbreviated summaries on the other thirteen crane species of the world. The stories of these birds and their contrasting fates provide an instructive and moving history of bird conservation in North America. A Chorus of Cranes is a gorgeous and invaluable resource for crane enthusiasts, birders, natural historians, and conservationists alike. The University Press of Colorado gratefully acknowledges the generous support of the Iain Nicholson Audubon Center at Rowe Sanctuary, Audubon Nebraska, Ron and Judy Parks, Wagon Tongue Creek Farm, and the Trull Foundation toward the publication of this book. “In this glorious book, Paul Johnsgard and Tom Mangelsen have captured the very essence of these ancient birds—their beauty, grace of movement, and fascinating lives. It is a must for crane lovers, birders, and all who love the natural world.” —Jane Goodall “Johnsgard is the world’s leading synthesizer of our knowledge of birds and the presenter of such varied and complex information to both professional and lay audiences. He has made an enormous contribution to our planet . . . In his latest book, A Chorus of Cranes, the splendor of Johnsgard’s lyrical style is matched by incomparable images from one of the world’s best-known photographers, and fellow Nebraskan, Tom Mangelsen.” —George Archibald, Co-Founder and Senior Conservationist, International Crane Foundation
Author : Curt Meine,George Archibald
Publisher : IUCN
Page : 298 pages
File Size : 41,7 Mb
Release : 1996
Category : Nature
ISBN : 2831703263
The Cranes are among the most ancient and distinctive families of birds on Earth, yet they are among the world's most threatened groups of birds. This Action Plan describes the many different sorts of threats facing cranes, especially as they migrate through different countries, and the many solutions that have been attempted to overcome them. It is intended for all those involved in crane conservation, including conservation biologists; conservation organizations, other non-governmental organizations, inter-national development agencies; political, civic, and business leaders; funding agencies and foundations; educators; and members of the general public.
Author : Fritz L. Knopf,Fred B. Samson
Publisher : Springer Science & Business Media
Page : 329 pages
File Size : 43,7 Mb
Release : 2013-04-17
Category : Science
ISBN : 9781475727036
The frontier images of America embrace endless horizons, majestic herds of native ungulates, and romanticized life-styles of nomadie peoples. The images were mere reflections of vertebrates living in harmony in an ecosystem driven by the unpre dictable local and regional effects of drought, frre, and grazing. Those effects, often referred to as ecological "disturbanees," are rather the driving forces on which species depended to create the spatial and temporal heterogeneity that favored ecological prerequisites for survival. Alandscape viewed by European descendants as monotony interrupted only by extremes in weather and commonly referred to as the "Great American Desert," this country was to be rushed through and cursed, a barrier that hindered access to the deep soils of the Oregon country, the rich minerals of California and Colorado, and the religious freedom sought in Utah. Those who stayed (for lack of resources or stamina) spent a century trying to moderate the ecological dynamics of Great Plains prairies by suppressing fires, planting trees and exotic grasses, poisoning rodents, diverting waters, and homogenizing the dynamies of grazing with endless fences-all creating bound an otherwise boundless vista. aries in Historically, travelers and settlers referred to the area of tallgrasses along the western edge of the deciduous forest and extending midway across Kansas as the "True Prairie. " The grasses thlnned and became shorter to the west, an area known then as the Great Plains.
Author : Anonim
Publisher : Unknown
Page : 814 pages
File Size : 53,8 Mb
Release : 1995
Category : Electronic
ISBN : NWU:35556031002355
Author : Ernie Kuyt,Canadian Wildlife Service
Publisher : Unknown
Page : 60 pages
File Size : 48,8 Mb
Release : 1992
Category : Animal radio tracking
ISBN : MINN:31951D01061690R
From 1981 to 1984, Whooping Cranes Grus americana migrating between their summer range in and near Wood Buffalo National Park in Canada and their winter range on and near the Aransas National Wildlife Refuge in the United States were studied by means of radiotelemetry. Objectives of the aerial study included a precise determination of migration routes, duration of occupancy and location of stopover sites, and documentation of migrating crane behavior and mortality.
Author : Kelly Jo Maguire
Publisher : Unknown
Page : 70 pages
File Size : 49,6 Mb
Release : 2008
Category : Electronic
ISBN : WISC:89101301109
Author : Anonim
Publisher : Unknown
Page : 564 pages
File Size : 51,5 Mb
Release : 2001
Category : Electronic
ISBN : NWU:35556033426792