551 items found
Type: Text
Subjects: Guassian process
MCMC
Population estimation
Recursive Bayes
MCMC
Population estimation
Recursive Bayes
Type:Text
Subject:Guassian process
MCMC
Population estimation
Recursive Bayes
MCMC
Population estimation
Recursive Bayes
Description:Abstract: Methods for population estimation and inference have evolved over the past decade to allow for the incorporation of spatial information when using capture–recapture study designs. Traditional approaches to specifying spatial capture–recapture (SCR) models often rely on an individual-based detection function that decays as a detection location is farther from an individual’s activity center. Traditional SCR models are intuitive because they incorporate mechanisms of animal space use based on their assumptions about activity centers. We modify the SCR model to accommodate a wide range of space use patterns, including for those individuals that may exhibit traditional elliptical utilization distributions. Our approach uses underlying Gaussian processes to characterize the space use of individuals. This allows us to account for multimodal and other complex space use patterns that may arise due to movement. We refer to this class of models as geostatistical capture–recapture (GCR) models. We adapt a recursive computing strategy to fit GCR models to data in stages, some of which can be parallelized. This technique facilitates implementation and leverages modern multicore and distributed computing environments. We demonstrate the application of GCR models by analyzing both simulated data and a data set involving capture histories of snowshoe hares in central Colorado, USA. [show more]
Type: Brochure
Subjects: Cutthroat trout
Type:Brochure
Subject:Cutthroat trout
Description:The Rio Grande cutthroat was the first trout to be encountered by Europeans in the West. In 1541, Francisco de Coronado’s expedition to find the mythical cities of gold came across the Rio Grande cutthroat in the upper Pecos River near what is now Santa Fe, New Mexico. [show more]
Type:
Subjects:
Description:CPW is providing a series of education sessions dedicated to the gray wolf reintroduction program. This video, recorded on April 29, 2019, is the first 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:
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:Wildlife Reporting and Your PrivacyInside Wolf Reintroduction 2.0 with Colorado Parks & Wildlife (Video, 1:00:50, March 18, 2025) The Colorado Sun discusses wolf reintroduction with CPW's Brenna Cassidy and Eric OdellMedia Kit: 2025 Gray Wolf Capture and Release Effort: High-resolution photos and video footage from the 2025 gray wolf capture and release.Colorado Wolf Release footage (2:42, Dec. 18, 2023)Oregon Wolf Captures (2:18, Dec. 17, 2023)CPW Wolf Pre-Site Assessment: CPW encourages landowners to request a site assessment as part of our conflict minimization program, which helps livestock producers mitigate wolf interactions with livestock.Chronic Depredation Definition and Lethal Management Considerations: Colorado Parks and Wildlife (CPW, The Division), along with input from the Ad Hoc Wolf Working Group, the Attorney General’s Office and in consultation with the USFWS has created an internal administrative directive defining ‘chronic depredation’ and lethal removal considerations for gray wolf managementPast, Present and Future of Wolves: Join CPW to explore the past, present and future of wolves in Colorado in this four-part series geared towards grades K-12 (Dec. 14, 2023).Living with Wolves (6:41)Restoring through Reintroductions (6:29)Journey of the Gray Wolf (8:59)What's at Stake for Stakeholders? (6:38)Wolf Reintroduction: Preparing to Reintroduce Wolves in Colorado (1:00, June 7, 2023): The wolves in this video have naturally dispersed into Jackson County and established a pack. The information from the collars will help our managers and researchers better understand wolf movements and behavior in Colorado in preparation for reintroducing wolves.Gray Wolf Reintroduction Education Sessions: a series of three education sessions dedicated to the gray wolf reintroduction program. #1 (1:55:27, April 29, 2019)#2 (1:36:26, May 24, 2021#3 (1:48:24, June 17, 2021) [show more]
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]