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Author : Heather Shepherd
Publisher : Unknown
Page : 274 pages
File Size : 41,6 Mb
Release : 1993
Category : Electronic
ISBN : WISC:89048373443
Author : Michael J. Armbruster,U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 28 pages
File Size : 42,5 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 : 53,6 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 : 46,8 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 : 662 pages
File Size : 51,5 Mb
Release : 1995
Category : Electronic
ISBN : NWU:35556031047814
Author : Michael J. Armbruster,U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 16 pages
File Size : 45,9 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 : Anonim
Publisher : Academic Press
Page : 538 pages
File Size : 42,8 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 : Susan Sales Harkins,William H. Harkins
Publisher : Mitchell Lane
Page : 39 pages
File Size : 55,8 Mb
Release : 2020-02-04
Category : Juvenile Nonfiction
ISBN : 9781545749814
Learn all about the tall, noisy whooping cranesee it dance, follow its flight path, and watch the stages as a chick hatches and grows into a cinnamon-colored juvenile and then into a stunning white bird with black wing tips and a red head. Why is this bird endangered? Devastating loss of habitat and overhunting of eggs and of adults for their skin in the 1800s made their numbers dwindle. By 1942, there were only sixteen whoopers still living in the wild. Now the whooping crane is making a comeback. In 2007, over 300 whooping cranes were migrating between Canada and Texas. Find out what scientists are doingand what you can doto help this endangered animal.
Author : Alberta. Alberta Environment,Jennifer L. White,Alberta Conservation Association
Publisher : Unknown
Page : 21 pages
File Size : 51,7 Mb
Release : 2001
Category : Whooping crane
ISBN : 0778514919
Author : Jerome J. Pratt
Publisher : Unknown
Page : 180 pages
File Size : 50,8 Mb
Release : 1996
Category : Nature
ISBN : WISC:89058889361
Author : United States. Congress. Senate. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher : Unknown
Page : 1544 pages
File Size : 51,7 Mb
Release : 1980
Category : Power resources
ISBN : STANFORD:36105009876280
Author : United States. Congress. Senate. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher : Unknown
Page : 1630 pages
File Size : 42,5 Mb
Release : 1981
Category : Energy development
ISBN : UCAL:B4681509
Author : United States. Congress. Senate. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher : Unknown
Page : 716 pages
File Size : 41,5 Mb
Release : 1981
Category : Energy development
ISBN : LOC:00172118343
Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher : Unknown
Page : 708 pages
File Size : 53,9 Mb
Release : 1981
Category : Electronic
ISBN : UOM:39015082592380
Author : United States. Congress. Senate. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher : Unknown
Page : 656 pages
File Size : 49,8 Mb
Release : 1980
Category : Power resources
ISBN : UOM:39015082036529