Grey wolf selection for moose calves and factors influencing prey
... elk, and caribou), on the other hand, become more vulnerable to predation in the winter, as their movement and access to food can be impeded by deep snow conditions (Mech and Boitani, 2003). In winter, the diets of wolves in North America tend to be dominated by ungulates (Mech, 1970). Where more th ...
... elk, and caribou), on the other hand, become more vulnerable to predation in the winter, as their movement and access to food can be impeded by deep snow conditions (Mech and Boitani, 2003). In winter, the diets of wolves in North America tend to be dominated by ungulates (Mech, 1970). Where more th ...
REPORT TO THE FISH AND GAME COMMISSION: STATUS REVIEW OF THE
... At Caswell Memorial State Park, the overall population density of Riparian Brush Rabbits at carrying capacity is estimated to be three animals per hectare (3/ha). This varies greatly depending on whether areas are highly suitable or marginal for use by these animals. In highly suitable areas the den ...
... At Caswell Memorial State Park, the overall population density of Riparian Brush Rabbits at carrying capacity is estimated to be three animals per hectare (3/ha). This varies greatly depending on whether areas are highly suitable or marginal for use by these animals. In highly suitable areas the den ...
Sage Grouse Population Management Risks, Conservation
... over harvest would increase if the current level of monitoring was not maintained and the population was still hunted. Risk: Over harvest of females and young of the year. Rated low Over harvest of adult females and young is always a risk when populations are hunted, but on Sheldon PMU this risk is ...
... over harvest would increase if the current level of monitoring was not maintained and the population was still hunted. Risk: Over harvest of females and young of the year. Rated low Over harvest of adult females and young is always a risk when populations are hunted, but on Sheldon PMU this risk is ...
Lythrum salicaria invasiveness, impacts and regulation implications
... attributed to ballast water. Garden varieties are also a contributing factor to escapement in North America, and are the most likely source of the infestation found on Chester Creek in Anchorage. In Europe Lythrum is often not associated with mono-specific stands because of predation by native insec ...
... attributed to ballast water. Garden varieties are also a contributing factor to escapement in North America, and are the most likely source of the infestation found on Chester Creek in Anchorage. In Europe Lythrum is often not associated with mono-specific stands because of predation by native insec ...
Feral Swine Impacts on Agriculture and the Environment
... omnivorous diet allows them to utilize a variety of food sources and to thrive in a wide range of environments. The majority of their diet consists of grasses, forbs, and soft and hard mast such as shoots, roots, tubers, fruit, and seeds. Acorn (Quercus spp.) and hickory (Carya spp.) nuts are two im ...
... omnivorous diet allows them to utilize a variety of food sources and to thrive in a wide range of environments. The majority of their diet consists of grasses, forbs, and soft and hard mast such as shoots, roots, tubers, fruit, and seeds. Acorn (Quercus spp.) and hickory (Carya spp.) nuts are two im ...
Feral Swine Impacts on Agriculture and the Environment
... omnivorous diet allows them to utilize a variety of food sources and to thrive in a wide range of environments. The majority of their diet consists of grasses, forbs, and soft and hard mast such as shoots, roots, tubers, fruit, and seeds. Acorn (Quercus spp.) and hickory (Carya spp.) nuts are two im ...
... omnivorous diet allows them to utilize a variety of food sources and to thrive in a wide range of environments. The majority of their diet consists of grasses, forbs, and soft and hard mast such as shoots, roots, tubers, fruit, and seeds. Acorn (Quercus spp.) and hickory (Carya spp.) nuts are two im ...
Scaled Quail Ecology and Management in
... Reduce livestock stocking rates during drought years. Light to moderate grazing pressure will increase availability of forb and mixed grass vegetation, along with increasing the number of available nest sites. Ensure stocking rates allow for adequate residual cover prior to peak nesting season in Ap ...
... Reduce livestock stocking rates during drought years. Light to moderate grazing pressure will increase availability of forb and mixed grass vegetation, along with increasing the number of available nest sites. Ensure stocking rates allow for adequate residual cover prior to peak nesting season in Ap ...
Wetlands: A Component of an Integrated Farming Operation
... and crustaceans that thrive without predation. ...
... and crustaceans that thrive without predation. ...
Key Threatening Process Nomination Form
... deer elsewhere are known to cause substantial ecological damage (see Cotes et al. 2004 for a summary) and damage caused by exotic herbivores of comparable size – feral goats, for example – is substantial and typically related to population size (Parkes et al. 1996). With favourable climates in Austr ...
... deer elsewhere are known to cause substantial ecological damage (see Cotes et al. 2004 for a summary) and damage caused by exotic herbivores of comparable size – feral goats, for example – is substantial and typically related to population size (Parkes et al. 1996). With favourable climates in Austr ...
Habitat complexity: approaches and future directions
... Castilla, 2005; Matias et al., 2010). However, mechanisms behind this effect are not entirely clear, with explanations including a greater number of niches due to increased microhabitat availability, as well as higher productivity and sampling effect associated with greater surface area. In support ...
... Castilla, 2005; Matias et al., 2010). However, mechanisms behind this effect are not entirely clear, with explanations including a greater number of niches due to increased microhabitat availability, as well as higher productivity and sampling effect associated with greater surface area. In support ...
UNDP AND GEF IN THE SNOW LEOPARD LANDSCAPE
... addressing direct environmental threats as well as the underlying conditions that allow these threats to arise. Projects also target the issues at multiple levels, from local, on-the-ground interventions to regional and national government policy reform, to efforts that require international coopera ...
... addressing direct environmental threats as well as the underlying conditions that allow these threats to arise. Projects also target the issues at multiple levels, from local, on-the-ground interventions to regional and national government policy reform, to efforts that require international coopera ...
COSEWIC assessment and status report on the Marbled Murrelet
... threats including ongoing habitat loss, coupled with increased threats from proposed shipping routes in the core of the species’ range, increased fragmentation from a variety of proposed and recently initiated developments, fisheries bycatch and changing at-sea conditions have resulted in projected ...
... threats including ongoing habitat loss, coupled with increased threats from proposed shipping routes in the core of the species’ range, increased fragmentation from a variety of proposed and recently initiated developments, fisheries bycatch and changing at-sea conditions have resulted in projected ...
Spatial Ecology of Wolverines in Scandinavia
... This thesis is submitted to the Faculty of Sciences and Technology of the Norwegian University of Science and Technology (NTNU) for the degree of philosophiae doctor (PhD).The thesis consists of five papers and an introduction that summarizes the work. The research founding the basis of the thesis h ...
... This thesis is submitted to the Faculty of Sciences and Technology of the Norwegian University of Science and Technology (NTNU) for the degree of philosophiae doctor (PhD).The thesis consists of five papers and an introduction that summarizes the work. The research founding the basis of the thesis h ...
Spatial Ecology of Wolverines in Scandinavia
... This thesis is submitted to the Faculty of Sciences and Technology of the Norwegian University of Science and Technology (NTNU) for the degree of philosophiae doctor (PhD).The thesis consists of five papers and an introduction that summarizes the work. The research founding the basis of the thesis h ...
... This thesis is submitted to the Faculty of Sciences and Technology of the Norwegian University of Science and Technology (NTNU) for the degree of philosophiae doctor (PhD).The thesis consists of five papers and an introduction that summarizes the work. The research founding the basis of the thesis h ...
Effectiveness of Lethal, Directed Wolf-Depredation
... Lethal control of wolves {Canis lupus) that kill livestock has been an issue for humans as long as humans and their livestock have coexisted with wolves. In the lower 48 United States, persecution of wolves led to their near elimination by the 1960s (Mech 1970). In 1974, wolves were fully protected ...
... Lethal control of wolves {Canis lupus) that kill livestock has been an issue for humans as long as humans and their livestock have coexisted with wolves. In the lower 48 United States, persecution of wolves led to their near elimination by the 1960s (Mech 1970). In 1974, wolves were fully protected ...
Management Plan for the Reintroduction of Black Rhino to Sera
... government and private wildlife areas. The success of these sanctuaries has led to the slow recovery of the species; the national population estimate in 2009 was 635 individuals. Rhino populations in all sanctuaries are breeding well and through improved biological management are projected to increa ...
... government and private wildlife areas. The success of these sanctuaries has led to the slow recovery of the species; the national population estimate in 2009 was 635 individuals. Rhino populations in all sanctuaries are breeding well and through improved biological management are projected to increa ...
Working Together to Recover Boreal Caribou
... The woodland caribou (boreal population) was listed as a threatened species in Canada when the Species at Risk Act (SARA) came into force in June 2003. This listing was based on an assessment made by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) in 2002. The reasons for asse ...
... The woodland caribou (boreal population) was listed as a threatened species in Canada when the Species at Risk Act (SARA) came into force in June 2003. This listing was based on an assessment made by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) in 2002. The reasons for asse ...
IMPACTS of FERAL and FREE- RANGING CATS on BIRD SPECIES
... and their small populations, it is easy to understand The domestic cat is now so common in the United why these birds are so vulnerable to predators, includStates that many people do not realize they are an alien ing cats. species. Domesticated in Egypt more than 4,000 years ago, Felis catus is a de ...
... and their small populations, it is easy to understand The domestic cat is now so common in the United why these birds are so vulnerable to predators, includStates that many people do not realize they are an alien ing cats. species. Domesticated in Egypt more than 4,000 years ago, Felis catus is a de ...
America`s Grasslands - National Wildlife Federation
... world. It is estimated that tallgrass prairies and savannas of the mid-western states have declined by as much as 99% as a result of habitat fragmentation, conversion to cropland, and undesirable habitat changes due to fire exclusion, improper grazing management, and use and spread of invasive and n ...
... world. It is estimated that tallgrass prairies and savannas of the mid-western states have declined by as much as 99% as a result of habitat fragmentation, conversion to cropland, and undesirable habitat changes due to fire exclusion, improper grazing management, and use and spread of invasive and n ...
Status of the Barred Owl (Strix varia) in Alberta
... and Wildlife Division of Alberta Sustainable Resource Development. They are intended to provide detailed and up-to-date information that will be useful to resource professionals for managing populations of species and their habitats in the province. The reports are also designed to provide current i ...
... and Wildlife Division of Alberta Sustainable Resource Development. They are intended to provide detailed and up-to-date information that will be useful to resource professionals for managing populations of species and their habitats in the province. The reports are also designed to provide current i ...
The effects of landscape fragmentation on
... Ovaskainen, 2006), the former minimizing the importance of landscape pattern (Fahrig, 2001, 2002; Prugh et al., 2008), the latter holding pattern to be a fundamental predictor of population dynamics (Hanski, 1998). This is also an important quandary for conservation biologists who need to know which ...
... Ovaskainen, 2006), the former minimizing the importance of landscape pattern (Fahrig, 2001, 2002; Prugh et al., 2008), the latter holding pattern to be a fundamental predictor of population dynamics (Hanski, 1998). This is also an important quandary for conservation biologists who need to know which ...
Long-Term Range Recession and the Persistence
... 1998; Schaefer et al. 2001; Ceballos & Ehrlich 2002). Although range recession might be tolerably estimated, transcribing this spatial pattern into a decrease in animal numbers or extinction of populations is more problematic (Ceballos & Ehrlich 2002). Indeed, population estimates of woodland caribo ...
... 1998; Schaefer et al. 2001; Ceballos & Ehrlich 2002). Although range recession might be tolerably estimated, transcribing this spatial pattern into a decrease in animal numbers or extinction of populations is more problematic (Ceballos & Ehrlich 2002). Indeed, population estimates of woodland caribo ...
Swift Fox (Vulpes velox) - Registre public des espèces en péril
... The ability by management agencies to accurately assess numbers is still open to wide interpretation. In a status evaluation of swift foxes in the United States, the United States Fish and Wildlife Service initially upheld a 1992 drafted petition to list the species as a candidate endangered species ...
... The ability by management agencies to accurately assess numbers is still open to wide interpretation. In a status evaluation of swift foxes in the United States, the United States Fish and Wildlife Service initially upheld a 1992 drafted petition to list the species as a candidate endangered species ...
Conservation Handbook for the Gopher Tortoise in Georgia
... pine ecosystem that come from active management, such as the use of prescribed fire, you will garner supporters and defenders of sustainable forestry. Ensuring that your family understands your management goals and desires is also important, as the most common reason given for owning forestland in G ...
... pine ecosystem that come from active management, such as the use of prescribed fire, you will garner supporters and defenders of sustainable forestry. Ensuring that your family understands your management goals and desires is also important, as the most common reason given for owning forestland in G ...
The Science of Feral Cats - American Bird Conservancy
... and are the only animals known to shed the infectious eggs. As the definitive host, T. gondii relies on cats for reproduction, but intermediate hosts may also be infected and include all warm-blooded animals (i.e., birds, mammals). Infection rates have been shown to be higher in free-roaming cats th ...
... and are the only animals known to shed the infectious eggs. As the definitive host, T. gondii relies on cats for reproduction, but intermediate hosts may also be infected and include all warm-blooded animals (i.e., birds, mammals). Infection rates have been shown to be higher in free-roaming cats th ...
Wildlife crossing
Wildlife crossings are structures that allow animals to cross human-made barriers safely. Wildlife crossings may include: underpass tunnels, viaducts, and overpasses (mainly for large or herd-type animals); amphibian tunnels; fish ladders; tunnels and culverts (for small mammals such as otters, hedgehogs, and badgers); green roofs (for butterflies and birds).Wildlife crossings are a practice in habitat conservation, allowing connections or reconnections between habitats, combating habitat fragmentation. They also assist in avoiding collisions between vehicles and animals, which in addition to killing or injuring wildlife may cause injury to humans and property damage.Similar structures can be used for domesticated animals, such as cattle creeps.