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Author : Anonim
Publisher : Unknown
Page : 36 pages
File Size : 48,5 Mb
Release : 1973
Category : Electronic
ISBN : NWU:35556030796882
Author : Anonim
Publisher : Unknown
Page : 98 pages
File Size : 41,7 Mb
Release : 1973
Category : Electronic
ISBN : NWU:35556031207392
Author : United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Public Lands and Reserved Water
Publisher : Unknown
Page : 508 pages
File Size : 48,9 Mb
Release : 1983
Category : Donkeys
ISBN : STANFORD:36105045275679
Author : United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Public Lands
Publisher : Unknown
Page : 310 pages
File Size : 43,9 Mb
Release : 1976
Category : Donkeys
ISBN : LOC:0018423564A
Author : United States. Congress. House
Publisher : Unknown
Page : 24 pages
File Size : 42,5 Mb
Release : 1971
Category : Donkeys
ISBN : CORNELL:31924003330986
Author : United States. Congress. Senate
Publisher : Unknown
Page : 24 pages
File Size : 47,7 Mb
Release : 1971
Category : Donkeys
ISBN : CORNELL:31924003331042
Author : United States. Congress. House
Publisher : Unknown
Page : 16 pages
File Size : 51,8 Mb
Release : 1971
Category : Donkeys
ISBN : CORNELL:31924003331059
Author : Anonim
Publisher : Unknown
Page : 78 pages
File Size : 55,5 Mb
Release : 1976
Category : Public lands
ISBN : WISC:89038463485
Author : United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Public Lands
Publisher : Unknown
Page : 466 pages
File Size : 44,6 Mb
Release : 1976
Category : Donkeys
ISBN : STANFORD:36105045408361
Author : Mathew O. Ardus
Publisher : Nova Science Pub Incorporated
Page : 122 pages
File Size : 44,9 Mb
Release : 2009
Category : Political Science
ISBN : 1606929623
Following passage of the Wild Free-Roaming Horses and Burros Act in 1971, limits for the number of horses on each herd unit (referred to as Herd Management Areas or HMA's) were set. These limits or population goals are referred to as Appropriate Management Levels or AMLs. From 1980 and through the present, more active management reduced wild horse numbers closer to AMLs. Wild horse numbers were reduced to about 40,000 by 1999 and to about 37,186 wild horses in 2003, prior to the foaling season. Some 203 HMAs are managed by the BLM across the Western U.S. The responsibility of monitoring range conditions; allocating range resources between horses, livestock, and wildlife; monitoring horse and burro numbers and managing their population levels represents a large federal management responsibility. The number of animals in most herds are counted or estimated every three to four years, in order to plan for any gathers, and adoptions. Herd management activities, such as gathers and removals, take place for most herd areas every four years.
Author : Anonim
Publisher : Unknown
Page : 248 pages
File Size : 51,5 Mb
Release : 1974
Category : Donkeys
ISBN : IND:30000066867304
Author : Anonim
Publisher : Unknown
Page : 62 pages
File Size : 43,8 Mb
Release : 1973
Category : Electronic
ISBN : NWU:35556030796866
Author : Mark Zarn,Thomas Heller,Kay Collins
Publisher : Unknown
Page : 62 pages
File Size : 41,7 Mb
Release : 1977
Category : Wild horses
ISBN : IND:30000044957573
Author : National Research Council,Division on Earth and Life Studies,Board on Agriculture and Natural Resources,Committee to Review the Bureau of Land Management Wild Horse and Burro Management Program
Publisher : National Academies Press
Page : 399 pages
File Size : 45,5 Mb
Release : 2013-10-04
Category : Technology & Engineering
ISBN : 9780309264945
Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.
Author : United States. Department of the Interior
Publisher : Unknown
Page : 252 pages
File Size : 49,7 Mb
Release : 1974
Category : Donkeys
ISBN : UOM:39015028780990