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The Bureau of Land Management (Bureau) manages public lands in the Pinedale Field Office (Field Office) planning area, which lies within west-central Wyoming (Figure 1). Lands in Teton County are not included in these reasonable foreseeable development scenarios. The main goal of our evaluation is to technically analyze the oil and gas resource occurring within the Field Office area and to project future development potential and activity levels for the period 2001 through 2020. This analysis makes a base line projection that assumes future activity levels will not be constrained by management-imposed conditions (Rocky Mountain Federal Leadership Forum, 2002). Where legislatively imposed restrictions are applied...
One of the single greatest challenges facing the Wyoming Game and Fish Department in the 21st century will be our ability to maintain sustainable fish and wildlife populations. This challenge can be met by addressing habitat needs and issues that seek to maintain open spaces, quality habitats and the ability of fish and wildlife to utilize these areas. Many habitat types are imperiled or at-risk. Potential impacts to fish and wildlife habi- tats are expanding, with some of the most noticeable being energy development, increasing demands for water, other land uses, and urban sprawl. The long-term drought has caused impacts as well. At the same time, we are being asked to take a far more active role in the conservation...
In 1979, the Wyoming Game and Fish Department (Department) and the Bighorn Audubon Society compiled a working draft of the Wyoming Avian Atlas. The first edition of the Wyoming Avian Atlas was published in 1982 under the authorship of Bob Oakleaf, Helen Downing, Bert Raynes, Meg Raynes, and Oliver K. Scott. Updates were provided each year in the Threatened, Endangered, and Nongame Bird and Mammal Investigations Annual Completion Reports. In 1981, Scott Findholt, Bob Oakleaf, and Bill Long published a Working Draft of the Wyoming Mammal Atlas. Updates were provided in some Annual Completion Reports. In 1991, the Department published a revision of both atlases, titled the Draft Distribution and Status of Wyoming...
Justification Continental and local declines in numerous bird populations have led to concern for the future of migratory and resident bird species. The reasons for declines are complex. Habitat loss, habitat modification and fragmentation, loss of wintering and migratory habitat, and nest parasitism have been implicated. In 1990, the National Fish and Wildlife Foundation brought together federal, state, and local government agencies, foundations, conservation groups, industry, and the academic community to form a program to address the problem. Thus, Partners In Flight was conceived as a voluntary, international coalition dedicated to “keeping common birds common” and reversing the downward trends of declining...
Purpose of this Document The Lynx Conservation Assessment and Strategy was developed to provide a consistent and effective approach to conserve Canada lynx on federal lands in the conterminous United States. The USDA Forest Service, USDI Bureau of Land Management, and USDI Fish and Wildlife Service initiated the Lynx Conservation Strategy Action Plan in spring of 1998. The lynx was proposed for listing as a threatened species under the Endangered Species Act on July 8, 1998 (Federal Register Volume 63, No. 130). The final rule listing the contiguous United States Distinct Population Segment (DPS) was published on March 24, 2000 (Federal Register Volume 65, No. 58). In the final rule, the U.S. Fish and Wildlife...
In the second half of the 20th Century, numbers of greater sage-grouse (Centrocerucus urophasianus), referred to as sage-grouse throughout this plan, have declined throughout their range. The causes of the decline have not been quantified. In 2000, the U.S. Fish and Wildlife Service (Service) designated the Upper Columbia populations (Washington State) of the western greater sage-grouse (Centrocerucus urophasianus phaios) as candidates for listing under the Endangered Species Act of 1973, as amended (Act), 16 U.S.C. 1531 et seq., due to their limited distribution and population numbers. The candidate designation means that listing is warranted, but is precluded by higher priority actions. In March 2003, the Service...
The Nongame Program of the Wyoming Game and Fish Department (Department) was initiated in July 1977. This report summarizes data collected from 15 April 2004 to 14 April 2005 on various nongame bird and mammal surveys and projects conducted by Department personnel, other government agencies, and individuals in cooperation with the Department. Cooperating agencies and individuals are listed in the individual completion reports, but we recognize that the listing does not completely credit the valuable contributions of the many cooperators, including Wyoming Game and Fish Department District Wildlife Biologists and members of the public. In October of 1987, a Nongame Strategic Plan was distributed; this Plan was updated...
Weighing 10 - 15 kg and with a wingspan of 2.4m when fully grown, the trumpeter swan (Cygnus buccinator) is the world's largest waterfowl. Trumpeter swans are similar in appearance to other white swans, but their foreheads slope evenly to an all black bill. The more common and smaller tundra, or whistling, swan (C. columbianus) is smaller with a more curved upper bill, and usually has a yellow spot in front of its eye. The trumpeter swan is a long-lived, social species, conspicuous by its large size, all-white plumage, and trumpet-like call. Although once abundant and widespread in North America, populations were greatly reduced during the European settlement era when the species was prized for its skin and feathers....
Amphibian surveys were performed on National Forest land in the upper Green River watershed of Wyoming in the summer of 2002. These surveys were conducted to gather baseline data on amphibian distribution, relative abundance and habitat requirements. Initial efforts were concentrated in river drainages, which were being considered for treatment with piscicides as part of a management plan for native Colorado River cutthroat trout (Oncorhynchus clarki pleuriticus). Boreal Toad (Bufo boreas boreas) specimens were collected for genetic and chytrid fungus (Batrachochytrium dendrobatidis) analyses. Three river drainages were surveyed: LaBarge Creek, Gypsum Creek, and Cottonwood Creek (North and South Cottonwood Creek)....
Sagebrush ecosystems are diverse habitats found throughout western North America that support a variety of flora and fauna. Home to unique wildlife such as Sage-grouse, Sage Thrashers, Brewer's Sparrows, Ferruginous Hawks, and pygmy rabbits, these ecosystems have undergone intense changes since the time when millions of bison roamed the plains. European settlement and intense agricultural practices resulted in the loss of over half of the sagebrush ecosystem. Today, sagebrush habitats continue to be threatened by a variety of influences. Conversion of these native landscapes to agriculture, invasion by non-native plant species, energy extraction activities and associated developments, rural expansion, and intense...
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This assessment was conducted to fulfill the requirements of section 712 of the Energy Independence and Security Act (EISA) of 2007 and to improve understanding of carbon and greenhouse gas (GHG) fluxes in ecosystems of the Western United States. The assessment examined carbon storage, carbon fluxes, and other GHG fluxes (methane and nitrous oxide) in all major terrestrial ecosystems (forests, grasslands/shrublands, agricultural lands, and wetlands) and aquatic ecosystems (rivers, streams, lakes, reservoirs, and coastal waters) in two time periods: baseline (generally in the first half of the 2010s) and future (projections from baseline to 2050). The assessment was based on measured and observed data collected by...
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This assessment was conducted to fulfill the requirements of section 712 of the Energy Independence and Security Act of 2007 and to conduct a comprehensive national assessment of storage and flux (flow) of carbon and the fluxes of other greenhouse gases in ecosystems of the Eastern United States. These carbon and greenhouse gas variables were examined for major terrestrial ecosystems (forests, grasslands/shrublands, agricultural lands, and wetlands) and aquatic ecosystems (rivers, streams, lakes, estuaries, and coastal waters) in the Eastern United States in two time periods: baseline (from 2001 through 2005) and future (projections from the end of the baseline through 2050). The Great Lakes were not included in...
The Bureau of Land Management determined a need to update the oil and gas Reasonable Foreseeable Development Scenario for the Rock Springs Field Office, Wyoming. We have gathered resource information on the potential magnitude and trend of future oil and gas activity so that staff of the Field Office can analyze associated management activities, future decisions, and environmental impact. The Field Office will use this information to update the cumulative analysis previously prepared for the EIS for the Green River Resource Management Plan for the next five years (2007-2011).
The Upper Green River Basin (UGRB) generally refers to the area north of Interstate 80, west of the Wind River Range, east of the Wyoming Range, and south of the Gros Ventre Range. The UGRB encompasses approximately 8,000 mi2; nearly 8% of the surface area in Wyoming. Historically, this sagebrush-dominated basin was occupied by a variety of ungulate species, including mule deer, elk, moose, bighorn sheep, pronghorn, and bison. Aside from providing large amounts of year-around habitat for wildlife, the mid-elevation (<7,600 ft.) basin serves as a natural corridor and winter range for migratory animals that occupy the surrounding mountain ranges. Today the UGRB continues to support the largest, most diverse ungulate...
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Conclusions: Soil texture, native prairie and grassland cover, and proximity to linear disturbances affect habitat suitability for burrowing owls. Native prairie coverage was considered the most critical variable in determining the most suitable habitat. The higher the percentage of native prairie, the more suitable it is for burrowing owl habitat.*Note that this study generated landscape level models with coarse variables, and the thresholds and values used may not be directly applicable to other areas or for site-specific analysis. Thresholds/Learnings: Synopsis: This report provides information on the habitat suitability requirements of the burrowing owl. Due to limited available data, the model that this...
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