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Type: Article
Subjects: Animal movement
Multiple imputation
Varying-coefficient model
Markov chain
Type:Article
Subject:Animal movement
Multiple imputation
Varying-coefficient model
Markov chain
Description:The processes influencing animal movement and resource selection are complex and varied. Past efforts to model behavioral changes over time used Bayesian statistical models with variable parameter space, such as reversible-jump Markov chain Monte Carlo approaches, which are computationally demanding and inaccessible to many practitioners. We present a continuous-time discrete-space (CTDS) model of animal movement that can be fit using standard generalized linear modeling (GLM) methods. This CTDS approach allows for the joint modeling of location-based as well as directional drivers of movement. Changing behavior over time is modeled using a varying-coefficient framework which maintains the computational simplicity of a GLM approach, and variable selection is accomplished using a group lasso penalty. We apply our approach to a study of two mountain lions (Puma concolor) in Colorado, USA. [show more]
Type: Article
Subjects: Cougar
<em>Puma concolor</em>
Wildlife management
Conservation
Wildlife conservation
Type:Article
Subject:Cougar
<em>Puma concolor</em>
Wildlife management
Conservation
Wildlife conservation
Description:

The cougar is one of the most beautiful, enigmatic, and majestic animals in the Americas. Eliciting reverence for its grace and independent nature, it also triggers fear when it comes into contact with people, pets, and livestock or competes for hunters’ game. Mystery, myth, and misunderstanding surround this remarkable creature.

The cougar’s range once extended from northern Canada to the tip of South America, and from the Pacific to the Atlantic, making it the most widespread animal in the western hemisphere. But overhunting and loss of habitat vastly reduced cougar numbers by the early twentieth century across much of its historical range, and today the cougar faces numerous threats as burgeoning human development encroaches on its remaining habitat.

When Maurice Hornocker began the first long-term study of cougars in the Idaho wilderness in 1964, little was known about this large cat. Its secretive nature and rarity in the landscape made it difficult to study. But his groundbreaking research yielded major insights and was the prelude to further research on this controversial species.

The capstone to Hornocker’s long career studying big cats, Cougar is a powerful and practical resource for scientists, conservationists, and anyone with an interest in large carnivores.  He and conservationist Sharon Negri bring together the diverse perspectives of twenty-two distinguished scientists to provide the fullest account of the cougar’s ecology, behavior, and genetics, its role as a top predator, and its conservation needs. This compilation of recent findings, stunning photographs, and firsthand accounts of field research unravels the mysteries of this magnificent animal and emphasizes its importance in healthy ecosystem processes and in our lives.

[show more]
Type:Article
Subject:Cougar
Midwest
<em>Puma concolor</em>
Recolonization
Description:Although cougars (Puma concolor) were extirpated from much of midwestern North America around 1900, hard evidence of cougar presence has increased and populations have become established in the upper portions of the Midwest during the past 20 years. Recent occurrences of cougars in the Midwest are likely due to dispersal of subadult cougars into the region from established western populations, and may be indicative of further recolonization and range expansion. We compiled confirmed locations of cougars (i.e., via carcasses, tracks, photos, video, and DNA evidence) collected during 1990–2008 in 14 states and provinces of midwestern North America. We separated our study area into 2 regions (east and west), calculated number and types of confirmations, and assessed trends in confirmations during the study period. We recorded 178 cougar confirmations in the Midwest and the number of confirmations increased during the study period (r = 0.79, P ≤ 0.001). Confirmations by state or province ranged from 1 (Kansas, Michigan, and Ontario) to 67 (Nebraska). Carcasses were the most prevalent confirmation type (n = 56). Seventy-six percent of known-sex carcass confirmations were males, consistent with predominantly male-biased dispersal in cougars. More confirmations (P = 0.05) were recorded in the western region  than the eastern region . Seventy-nine percent of cougar confirmations occurred within 50 km of highly suitable habitat (i.e., forest areas with steep terrain and low road and human densities). Given the number of cougar confirmations, the increasing frequency of occurrences, and that long-distance dispersal has been documented via radiocollared individuals, our research suggests that cougars are continuing to recolonize midwestern North America. [show more]
Type: Article
Subjects: Cougars
Human-animal relationships
Populations
Boulder, Colorado
Type:Article
Subject:Cougars
Human-animal relationships
Populations
Boulder, Colorado
Description:Cougars once occupied a range in the Western Hemisphere larger than that of any terrestrial mammal (other than humans) since the Pleistocene (Rabinowitz 2010). Highly adaptable, cougars inhabited deserts, grasslands, tropical rainforests, temperate mountains, and boreal forests. After Europeans settled North America, however, they virtually eliminated eastern cougar populations and dramatically reduced western populations in an effort to protect livestock and valued game species, and also to protect themselves. Later, government funded control and bounty programs, along with widespread unregulated killing of predators in the late 1800s and early 1900s, contributed to further cougar population declines. [show more]
Type:Text
Subject:Coyotes
Description:CPW has compiled this list as a tool for homeowners to utilize when trying to minimize conflicts with coyotes. The following exclusion techniques, deterrents, and repellents were gathered from various internet searches and written source reviews. CPW has not tested these products for their effectiveness nor endorses any particular product/method. Residents are encouraged to do their own research on additional tools that may be available. [show more]
Type:Text
Subject:Coyotes
Description:CPW encourages you to take steps to eliminate attractants and participate in hazing efforts on your property (hazing would include yelling or throwing objects at coyotes that come onto your property or that approach too closely) in order to minimize conflicts with coyotes. CPW also urges you to share this information with friends, neighbors and your community since minimizing conflicts is most effective when the entire neighborhood is working together. [show more]
Type:Text
Subject:Coyote
Gray wolf
Description:Gray wolves are about twice the size of coyotes. Coyotes are shorter, sleeker, and lighter on their feet.
Type:Text
Subject:Coyotes
Description:Coyotes in populated areas are typically less fearful of people. They have been known to attack pets and approach people too closely. Please read and share these tips with your children.
Subject:Aquatic research
Description:Bibliography of aquatic research publications, reports, and presentations
Description:Research series by agency personnel that includes 19 reports published from 1974-2001. Publications generally focus on management guidelines.Print copies located in CPW Research Library: SK 375 .D3. Access digital copy by clicking on the title below.
# TITLE AUTHOR DATE
1 Upper Roaring Fork environmental impact study Boyd, Raymond J 1974
 1 supp.  Supplement to Upper Roaring Fork environmental impact study Boyd, Raymond J 1974
2 Public access to private lands for hunting in Colorado Rounds, R. C. 1975
3 Mortality, survival, and effects of hunting on grouse, partridge, pheasants, and quail: an annotated bibliography Braun, Clait E 1975
4 Vegetation of two dissimilar bighorn sheep ranges in Colorado Shepherd, Harold R 1975
5 A guide for preparation of research manuscripts in the Division of Wildlife Yeager, Lee E. 1976
6 Construction and use of the Salt Plains duck trap in Colorado Szymczak, M. R. 1976
7 Fishing use, harvest and stocking evaluations at West and Dowdy Lakes Klein, W.illiam D. 1976
8 Index to fishery publications of the Colorado Division of Wildlife, 1941-1975 Cope, Oliver B 1977
9 Live-trapping and handling coyotes for research Stewart, George E. 1978
10 Evaluation of fertilizer and herbicide applications on two Colorado bighorn sheep winter ranges Bear, George D 1978
11 History and current status of the mule deer population on the east side of the Uncompahgre Plateau (Game management unit 62) Kufeld, Roland C 1979
12 Fish culture and stocking in Colorado, 1872-1978 Wiltzius, William J. 1985
13 Wildlife law enforcement : an annotated bibliography Smeltzer, John F. 1985
14 Not published    
15 Black bear management plan Gill, R. Bruce 1990
16 Evaluating and managing waterfowl habitat: a general reference on the biological requirements and management of ducks and geese common to Colorado Ringelman, James K. 1991
17 Deer and elk management analysis guide, 1992-94 Freddy, David J. 1993
18 Management guidelines for Merriam's wild turkeys Hoffman, Richard W. 1993
19 Upland bird management analysis guide, 1994-1998 Braun, Clait E. 1994
20 Analysis and critique of the 1998 snowshoe hare pellet survey Bartmann, Richard M 2001
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