561 items found
Type:
Subjects:
Description:CPW is providing a series of education sessions dedicated to the gray wolf reintroduction program. This video is the second in this series.
Learn more about CPW's gray wolf reintroduction program at:
https://cpw.state.co.us/learn/Pages/Wolves-Stay-Informed.aspx [show more]
Type: Moving Image
Subjects: Gray wolf
Type:Moving Image
Subject:Gray wolf
Description:CPW is providing a series of education sessions dedicated to the gray wolf reintroduction program. This video, recorded on June 16, 2021, is the third in this series that discusses wolf-livestock damage minimization and compensation.
Description:PDF files for Gray Wolf Reintroduction: Resources digital collection page.
Type: Text
Subjects: Greater sage-grouse
<em>Centrocercus urophasianus</em>
Wildlife management
<em>Centrocercus urophasianus</em>
Wildlife management
Type:Text
Subject:Greater sage-grouse
<em>Centrocercus urophasianus</em>
Wildlife management
<em>Centrocercus urophasianus</em>
Wildlife management
Description:In response to population declines, recent research on greater sage-grouse (Centrocercus urophasianus) has focused on the population ecology, habitat relationships, and response to management practices by this species. However, the mechanisms, patterns, and consequences of movements between seasonal habitats, especially by juveniles during natal dispersal, and the effects of this movement on survival, recruitment, the redistribution of individuals, as well as the population dynamics within and between populations remains largely unknown. Quantifiable data and information on juvenile dispersal and survival in the greater sage-grouse is one of the least understood aspects of this species’ life history. Dispersal patterns and recruitment processes of juvenile sage-grouse, as well the landscape characteristics that influence and contribute to these movements remain lacking. Knowledge of the dispersal ecology (timing, distances moved, frequency and rate of movement, immigration and emigration rates within and between populations, and juvenile survivorship) will provide better information on how to manage this species at the landscape level, as well as within and between populations. This information will be useful in attempting to improve and plan for the conservation and management of this species as its habitat becomes more fragmented and altered. The objectives of our study were to 1) determine the sex-specific movement patterns of juvenile sage-grouse during natal dispersal including timing, duration, rate of movement, distances moved and recruitment rate, 2) determine the effects of these dispersal patterns on survival rates and causes of mortality, 3) determine how landscape structure influences both the movement patterns and survival of juveniles during this period, 4) verify and evaluate the mechanisms and conditions of adoption in wild broods through the introduction of domestically-hatched chicks and observation of natural adoption rates, 5) assess the movement patterns and survivorship of successfully adopted domestically-hatched 2 and 7 day-old chicks from the natal area of the surrogate brood to chick independence and brood break-up (approximately 10 weeks of age), and 6) compare the movement patterns and survivorship of domestically-hatched chicks with the movement patterns and survivorship of wild-hatched chicks in mixed and unmixed broods from the natal area of the surrogate brood to chick independence and brood break-up. The study areas were located in the Axial Basin and Cold Springs Mountain in northwestern Colorado from 2005 – 2007. The project field research and final report is complete and we continue in the publication phase of this research project. [show more]
Type: Text
Subjects: Greater sage-grouse
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
Type:Text
Subject:Greater sage-grouse
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
Description:Large-scale changes to sagebrush habitats throughout western North America have led to growing concern for conservation of greater sage-grouse (Centrocercus urophasianus) and repeated petitions to list the species under the Endangered Species Act. Greater sage-grouse in the Parachute-Piceance-Roan (PPR) region of western Colorado face two major conservation issues: potential impacts from rapidly increasing energy development and a long-term decline in habitat suitability and range contraction associated with pinyon-juniper (PJ) encroachment. In 2006, the Colorado Division of Wildlife (CDOW) and industry partners initiated a 3-year study to obtain baseline data on seasonal habitat use, movements, vital rates, and genetics of greater sage-grouse in the PPR. CDOW has since expanded the original project to include generating high-resolution maps showing concentrated seasonal use areas and assessing the value of PJ removal to restore habitat as mitigation for energy development. Current and proposed energy development overlaps greater sage-grouse occupied range in the PPR. However, industry and agencies need higher-resolution maps showing where sage-grouse occur during each season to streamline development planning and mitigation and guide sage-grouse conservation efforts. [show more]
Type: Text
Subjects: Greater sage-grouse
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
Type:Text
Subject:Greater sage-grouse
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
<em>Centrocercus urophasianus</em>
Parachute-Piceance-Roan (PPR) region
Wildlife habitat improvement
Northwestern Colorado
Description:Loss and degradation of sagebrush habitat throughout western North America has led to growing concern for conservation of greater sage-grouse (Centrocercus urophasianus) and repeated petitions to list the species under the Endangered Species Act. Greater sage-grouse in the Parachute- Piceance-Roan (PPR) region of western Colorado face at least two known potential stressors: increasing energy development and a long-term decline in habitat suitability associated with pinyon-juniper encroachment. In 2006, the Colorado Division of Wildlife (CDOW) and industry partners initiated a 3- year study to obtain baseline data on seasonal habitat use, movements, vital rates, and genetics of greater sage-grouse in the PPR. CDOW has since expanded that original project to include two new objectives: (1) generate high-resolution maps showing high-priority seasonal use areas for the entire population, and (2) assess the value of pinyon-juniper removal for increasing sage-grouse habitat. Industry, landowners, and state and federal agencies need high-resolution maps showing where sage-grouse occur during each season to streamline development planning, quantify mitigation needs, and guide on-the-ground sage-grouse conservation efforts. [show more]
Type: Text
Subjects: Coal mining
<em>Centrocercus urophasianus</em>
Greater sage-grouse
Habitat selection
Reproductive success
Northwestern Colorado
<em>Centrocercus urophasianus</em>
Greater sage-grouse
Habitat selection
Reproductive success
Northwestern Colorado
Type:Text
Subject:Coal mining
<em>Centrocercus urophasianus</em>
Greater sage-grouse
Habitat selection
Reproductive success
Northwestern Colorado
<em>Centrocercus urophasianus</em>
Greater sage-grouse
Habitat selection
Reproductive success
Northwestern Colorado
Description:Like many wildlife species, the greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) has experienced extensive habitat loss and regional population declines as a result of agriculture, mining practices, and human settlement. Some of the greatest impacts to sage-grouse populations are due to anthropogenic disturbances such as land conversions, usually agricultural development, and natural resource development. In 2010, the greater sage-grouse, was petitioned range-wide for listing to receive protections under the Endangered Species Act and the U. S. Fish and Wildlife Service determined the listing was “warranted, but precluded.” Populations have declined range-wide, and currently occur in 11 states and 2 Canadian Provinces. [show more]
Description:
About
Though presumed to be extinct by 1937, several wild populations of what were thought to be greenback cutthroat trout were discovered in the South Platte and Arkansas basins starting in the late 1950s. These discoveries launched an aggressive conservation campaign that replicated those populations across the landscape so that they could be down-listed from endangered to threatened under the Endangered Species Act. Momentum for preserving these native jewels continued to build, and in 1996, the greenback was designated as Colorado's state fish. Efforts to establish new populations were proceeding along a track that suggested the recovery plan benchmarks might soon be met, and the subspecies could be delisted entirely. Recent genetic work on museum and extant populations however suggests that in fact the true native cutthroat of the South Platte basin (and heir to the name greenback cutthroat trout), can be found in only a single stream outside their native range. Aggressive recovery efforts have been implemented to replicate this population, with the first reintroduction in the wild occurring in August 2014.
Recovery Team documents
Technical reports
[show more]
Type: Article
Subjects: Bridger-Teton National Forest
Depredation
Domestic cattle
Grand Teton National Park
Grizzly bear
Nuisance bear management
<em>Ursus arctos</em>
Depredation
Domestic cattle
Grand Teton National Park
Grizzly bear
Nuisance bear management
<em>Ursus arctos</em>
Type:Article
Subject:Bridger-Teton National Forest
Depredation
Domestic cattle
Grand Teton National Park
Grizzly bear
Nuisance bear management
<em>Ursus arctos</em>
Depredation
Domestic cattle
Grand Teton National Park
Grizzly bear
Nuisance bear management
<em>Ursus arctos</em>
Description:We determined cause of death for 182 cattle found dead on 2 adjacent public land grazing allotments in northwest Wyoming during 1994-96. Grizzly bears (Ursus arctos) killed fifty-one calves and 6 adults, representing 1.1% (mean) of the annual calf herd and 0.1% of the annual adult herd. An additional 0.9-1.8% of remaining calves were missing each year. Black bears (U. americanus), although present, were not implicated in cattle depredation. We believe that missing calves experienced depredation similar to discovered calves because the proportion killed by bears was similar for those equipped with mortality-sensing transmitters and unmarked calves (P = 0.73). Thus, estimated depredation equaled 78 calves or 1.3-2.2% of the annual calf herd. All observed depredation occurred at night (n = 9). Kills were separated by a mean of 3 days (n = 50) and occurred between 16 June and 13 September (median = 9 August). Radiotagged grizzly bears (n = 17) spent a greater proportion of time in the study area while depredations were occurring, and 10 were located near cattle more frequently than expected (P < 0.05), but most did not kill cattle. Although individuals from all sex and age (subadult, adult) groups except subadult males killed cattle, 3 adult males were responsible for 90% of confirmed losses. We employed management actions including euthanasia, translocation, and aversive conditioning to remove chronic depredators. No depredations were discovered following absence of the 3 depredating males in 1996, unlike the previous 2 years when losses continued for an additional 4 to 6 weeks. This suggests that removal of chronic depredators can reduce losses. Other bears did not become more depredatory, although many were known to utilize cattle carcasses. Removal of cattle carcasses during 1996 appeared to reduce bear densities but did not deter depredatory bear behavior. Identification and removal of depredatory individuals appears key in addressing conflicts with grizzly bears on rangelands. [show more]