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Age at Capture - Ministry of Environment
Age at Capture - Ministry of Environment

... Dispersal distance and dispersal rates were calculated from a sub-dataset of caribou locations determined in the summer season. By restricting the dataset to one season, migration to and from seasonal ranges allowed us to define temporally discrete home ranges across years. Summer home ranges were e ...
Recovery plan for the brush-tailed rock
Recovery plan for the brush-tailed rock

... This document, which constitutes the formal NSW recovery plan for the brush-tailed rockwallaby: • outlines the animal’s ecology • describes its past and current distribution and abundance • explains the reasons for its decline • sets out actions to recover the species across its known range in NSW. ...
Newell's shearwater population modeling for Habitat Conservation
Newell's shearwater population modeling for Habitat Conservation

... growth  rate  by  up  to  0.5%  and  0.3%,  respectively,  but  would  prove  more  effective  in  areas  where  concurrent  colony  management  is  planned.    The  Save  Our  Shearwater  program  could  theoretically  increase growth rate by up to 0.8% if fledglings recovered and released experien ...
Conservation Strategy Updated 3-16-17
Conservation Strategy Updated 3-16-17

... Managing habitat on 9,895 acres of public land will cost over $17 million; an additional 10,475 acres of state land are slated for management through controlled burning at an additional cost of $2 million. According to parcel analyses, over 145,268 acres of public land are highly suitable as potent ...
fisken og
fisken og

... The risk assessment is based on a review of existing scientific literature and expert judgments, and the data was evaluated on a workshop in April 2012 with the participation of 14 experts on C.gigas in Scandinavia. Long-term climate scenarios are adapted from IPCC (Scenario AIB and A2) and a short ...
shorebird management and conservation report
shorebird management and conservation report

... Outer Harbor and Gillman, new road and rail infrastructure, altered recreational access and the expansion or relocation of the Dry Creek saltfields. Individually, each development appears reasonably small. However if all proposed developments were to go ahead a significant area of shorebird habitat ...
Applying stable isotopes to examine foodweb structure: an overview
Applying stable isotopes to examine foodweb structure: an overview

... 2009a; Moore & Semmens, 2008; Semmens et al., 2009b; Votier et al., 2010), and human-driven shifts in community structure (Layman et al., 2007b; Schmidt et al., 2007). The emergence of new analytical approaches has led to some debate about which method(s) is most appropriate to apply to stable isoto ...
Five-lined Skink (Plestiodon fasciatus)
Five-lined Skink (Plestiodon fasciatus)

... naturally as a result of variable reproductive success from one year to the next (Fitch 1954) and human disturbance can lead to population declines (Hecnar and M’Closkey 1998). ...
AN EXPERIMENTAL STUDY OF FORAGING AGGRESSION IN TWO
AN EXPERIMENTAL STUDY OF FORAGING AGGRESSION IN TWO

... one of the greatest convolutions of the world’s flora and fauna.” He was speaking of the humanmediated biological invasions which accompany the expansion of human civilization (Crosby 1986) and greatly alter patterns of global biodiversity (Vitousek et al. 1997). In fact, the impact of biological in ...
Ecological opportunity and the adaptive
Ecological opportunity and the adaptive

... which niche availability exists within given environments (Fig. I). First, ZNGIs are determined by the population dynamic response of a population to limiting environmental variables such as levels of key resources and density of predators, and impact vectors describe the impact of the population on ...
Allee Effects
Allee Effects

... expected to often result in strong selection for traits that reduce the influence of these mechanisms. For instance, rare species, which are typically at low density, often have adaptations that allow positive growth at low density, or they will become extinct. However, aggregation and sociality are ...
Wolverine (Gulo gulo) - Registre public des espèces en péril
Wolverine (Gulo gulo) - Registre public des espèces en péril

... Limiting factors and threats The ability of wolverine populations to recover and repopulate vacant habitats is naturally low. Other factors limiting populations include harvest, including trapping on the periphery of protected areas, disruptions to important ecosystem components such as wolves, moos ...
The Role of Wood in the Life Cycle of Western Pond Turtles
The Role of Wood in the Life Cycle of Western Pond Turtles

... Western pond turtles will seek safety from predators in the water beyond reach, or by burying themselves in waterlogged leaves and brush. Turtles tend to dive to the same underwater refugia when disturbed (F. Slavens, pers. comm. 1999). Shallow water habitat preferred by western pond turtles such as ...
Linkages in the Landscape
Linkages in the Landscape

... the environmental crisis had to find a way to ensure the protection of “ecosystems of priority importance”. The first protected area designations were made to ensure that, whatever human development might occur, some places would remain untouched. In other words, protected areas have been designed, ...
Effects of productivity, disturbance, and ecosystem size on food
Effects of productivity, disturbance, and ecosystem size on food

... where the subscripts i = 1, 2, and 3 represent the basal resource, the IG-prey, and the IG-predator, respectively. To reiterate, the above model assumes that the realized numbers of propagules emanating from patches, and the establishment probabilities within patches, depend only on species identity ...
Recovery strategy for the American Badger
Recovery strategy for the American Badger

... the American Badger to endangered. In 2004, T. t. jacksoni was added to the Species at Risk in Ontario List as endangered – not regulated. When this list was regulated in 2008, the subspecies was removed from the species name. Little research or monitoring has been conducted on the Ontario populatio ...
General Habitat Description for the Forest-dwelling
General Habitat Description for the Forest-dwelling

... (see Habitat Categorization) is required for caribou to carry out their life processes and for populations to persist for multiple generations. While the availability, amount, and distribution of these features shift spatially and temporally within the range due to natural and anthropogenic disturba ...
Schaus Swallowtail Butterfly
Schaus Swallowtail Butterfly

... and Kushlan 1984). The minimum area of tropical hardwood hammock required for a successful butterfly population is not known, though viable wild populations have been noted over a 14-year period in areas as small as 4 ha (T. Emmel, University of Florida, personal communication 1998). Similarly, the ...
Recovery Plan for the Southern Brown Bandicoot in the Mount Lofty
Recovery Plan for the Southern Brown Bandicoot in the Mount Lofty

... Brown Bandicoots and seeking their involvement in this recovery plan will assist in the protection of habitat on private land, the adoption of responsible pet ownership initiatives, and will increase the public’s willingness to assist in the restoration of habitat on private and public land. Numerou ...
SPECIES AND HABITAT ASSESSMENTS AND CONSERVATION
SPECIES AND HABITAT ASSESSMENTS AND CONSERVATION

... the state ranks fourth in the number of total vertebrate species, with more amphibians than any other state in the nation and more mammal species than any other state east of Texas. Unfortunately, the southeast also contains some of the most endangered ecosystems in the country: southern Appalachian ...
Action Plan for the conservation of Wolverines (Gulo gulo) in Europe
Action Plan for the conservation of Wolverines (Gulo gulo) in Europe

... Like many conservation issues, the future of Europe's large carnivores is dependent on cross-border co-operation between nations and, importantly, on managing their interaction with human activities. The challenge of conserving large carnivores is complex and must involve a wide range of stakeholder ...
Babcock RCW Plan - Florida Department of Environmental Protection
Babcock RCW Plan - Florida Department of Environmental Protection

... Earley 2004). The red-cockaded Woodpecker was listed as an endangered species in 1968 (U.S.D.I. 1968), and given federal protection by the Endangered Species Act in 1973, although its widespread decline was noted decades earlier (Bent 1939). Breeding The red-cockaded woodpecker is a cooperative bre ...
Key - Scioly.org
Key - Scioly.org

... d) Explanation (2pts) Bobcats are not a mountain lion’s primary prey because it is more efficient for the mountain lion to eat animals lower in the food web. By the 10% rule, eating a bobcat is analogous to eating 10 pikas, when factoring in the number of bobcats present in the landscape compared to ...
Density dependence and population regulation in marine fish: a
Density dependence and population regulation in marine fish: a

... regulation: persistence, boundedness, and return tendency. Reefs supporting regulated populations were structurally complex, providing sufficient prey refuges that ensured high survival at low densities. In contrast, populations at low-settlement reefs experienced either density-independent or slight ...
Provisional Site Selection Document
Provisional Site Selection Document

... were drawn up based on the IUCN and National Species Reintroduction Forum guidelines together with feedback from the consultation exercise. The eight criteria used to guide site selection are as follows: A. What is the habitat composition within the sites and how suitable is it for lynx? B. Is there ...
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Source–sink dynamics

Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population. In this model, organisms occupy two patches of habitat. One patch, the source, is a high quality habitat that on average allows the population to increase. The second patch, the sink, is very low quality habitat that, on its own, would not be able to support a population. However, if the excess of individuals produced in the source frequently moves to the sink, the sink population can persist indefinitely. Organisms are generally assumed to be able to distinguish between high and low quality habitat, and to prefer high quality habitat. However, ecological trap theory describes the reasons why organisms may actually prefer sink patches over source patches. Finally, the source-sink model implies that some habitat patches may be more important to the long-term survival of the population, and considering the presence of source-sink dynamics will help inform conservation decisions.
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