Oregon spotted frog listing - Center for Biological Diversity
... suggests an historical (rather than recent) isolation between individual groups (Blouin et al. 2010, p. 2189). This finding also reinforces microsatellite-based conclusions that gene flow among sites has been very low, even on small geographic scales (Blouin et al. 2010, p. 2188). Recent work by Rob ...
... suggests an historical (rather than recent) isolation between individual groups (Blouin et al. 2010, p. 2189). This finding also reinforces microsatellite-based conclusions that gene flow among sites has been very low, even on small geographic scales (Blouin et al. 2010, p. 2188). Recent work by Rob ...
Recovery plan for the brush-tailed rock
... interrelated factors contribute to the continued decline of the species. These factors include predation by and competition from introduced and other native species, habitat modification and destruction due to the spread of weeds and clearing of vegetation, fire, drought, disease and inbreeding. DEC ...
... interrelated factors contribute to the continued decline of the species. These factors include predation by and competition from introduced and other native species, habitat modification and destruction due to the spread of weeds and clearing of vegetation, fire, drought, disease and inbreeding. DEC ...
Proceedings of the WWF-Australia Quoll Workshop
... become established in the TransFly region (if it has not already established). Such a plan is likely to be focussed around establishing a population safe from toads in the interim. It is not clear if toads have already made it into portions of the TransFly or what effect their presence has on the br ...
... become established in the TransFly region (if it has not already established). Such a plan is likely to be focussed around establishing a population safe from toads in the interim. It is not clear if toads have already made it into portions of the TransFly or what effect their presence has on the br ...
Managing Rangelands to Benefit California Red
... still water. Eggs hatch within weeks after being deposited, depending on water temperature. Tadpoles generally take until late summer or early fall to complete metamorphosis (in some cases, tadpoles will over-winter and transform the following year [Fellers et al. 2001]). The maturing 4 Chapter Two ...
... still water. Eggs hatch within weeks after being deposited, depending on water temperature. Tadpoles generally take until late summer or early fall to complete metamorphosis (in some cases, tadpoles will over-winter and transform the following year [Fellers et al. 2001]). The maturing 4 Chapter Two ...
Conservation review of the dama gazelle
... drastically declined (Devillers et al. 2005; Newby et al. 2008; Scholte 2013). Now only five small and fragmented subpopulations are thought to survive and numbers in the wild are estimated to total less than 300 (Figure 1). The main threats include unsustainable hunting and loss and degradation of ...
... drastically declined (Devillers et al. 2005; Newby et al. 2008; Scholte 2013). Now only five small and fragmented subpopulations are thought to survive and numbers in the wild are estimated to total less than 300 (Figure 1). The main threats include unsustainable hunting and loss and degradation of ...
. American Mink, Neovison vison Overview Overview table Invasion
... Environmental Impact Impact on native species can occur through predation, competition, and potentially also by acting as a vector of disease. Significant population declines of ground-nesting birds (e.g. Larus ridibundus, Sterna hirundo) and small mammals (e.g. water vole Arvicola amphibius) have r ...
... Environmental Impact Impact on native species can occur through predation, competition, and potentially also by acting as a vector of disease. Significant population declines of ground-nesting birds (e.g. Larus ridibundus, Sterna hirundo) and small mammals (e.g. water vole Arvicola amphibius) have r ...
Existing and proposed PAS recovery and threat abatement
... Consideration will be given to amending Schedule 2 (Feed Tree Species) of SEPP 44 to include additional food tree species of koalas. The Office of Environment and Heritage (OEH) will determine the distribution of koalas across NSW by conducting a community-based survey. OEH will analyse patterns of ...
... Consideration will be given to amending Schedule 2 (Feed Tree Species) of SEPP 44 to include additional food tree species of koalas. The Office of Environment and Heritage (OEH) will determine the distribution of koalas across NSW by conducting a community-based survey. OEH will analyse patterns of ...
Spatial ecology of the Ethiopian wolf, Canis simensis
... persist in almost every Afroalpine range in Ethiopia, habitat loss has resulted in local extinctions in two small Afroalpine patches and all seven extant populations are small (ranging from 10 to 250 wolves) and virtually isolated from each other. The Ethiopian wolf’s specialization seems to have ap ...
... persist in almost every Afroalpine range in Ethiopia, habitat loss has resulted in local extinctions in two small Afroalpine patches and all seven extant populations are small (ranging from 10 to 250 wolves) and virtually isolated from each other. The Ethiopian wolf’s specialization seems to have ap ...
waterbirds
... landfills as an explanation for Herring Gull increases in the United Kingdom and other areas, and emphasizes the importance of a decrease in persecution. Great Black-backed Gulls nested on the Isles of Shoals along the Maine-New Hampshire border by 1928 (Norton and Allen 1931; Jackson and Allan 1932 ...
... landfills as an explanation for Herring Gull increases in the United Kingdom and other areas, and emphasizes the importance of a decrease in persecution. Great Black-backed Gulls nested on the Isles of Shoals along the Maine-New Hampshire border by 1928 (Norton and Allen 1931; Jackson and Allan 1932 ...
History and Impact of Gypsy Moth in North America and Comparison
... that time infested an area of 2539 km2 and encompassed 30 cities and towns. Control efforts were so successful that by 1899, little defoliation was detected and only a few moths were found. Therefore, further control was terminated; this was a poor decision because by 1905, gypsy moth populations ha ...
... that time infested an area of 2539 km2 and encompassed 30 cities and towns. Control efforts were so successful that by 1899, little defoliation was detected and only a few moths were found. Therefore, further control was terminated; this was a poor decision because by 1905, gypsy moth populations ha ...
7.0 TERRESTRIAL ENVIRONMENT .........................................................
... assessment of the Project’s predicted effects and impacts on the environment. Where existing available terrestrial information did not exist or was insufficient, field studies were initiated to address information gaps/data deficiencies. These methodologies are outlined in Sections 7.3.1 and 7.4.1 f ...
... assessment of the Project’s predicted effects and impacts on the environment. Where existing available terrestrial information did not exist or was insufficient, field studies were initiated to address information gaps/data deficiencies. These methodologies are outlined in Sections 7.3.1 and 7.4.1 f ...
- Wiley Online Library
... and 20 mg of detritus was added as a supplemental food source. For all treatments, multiple individuals were reared together in each tank, which created the possibility that some individuals monopolized food resources. This competition was expected – and potentially required (Pfennig and Frankino 19 ...
... and 20 mg of detritus was added as a supplemental food source. For all treatments, multiple individuals were reared together in each tank, which created the possibility that some individuals monopolized food resources. This competition was expected – and potentially required (Pfennig and Frankino 19 ...
Pyrethroid Insecticides: Use, Environmental Fate, and
... agricultural and non-agricultural applications, although accidental spills and direct application to soil surfaces can also be considered sources of release. However, because of their strong tendency to adsorb to soils and organic matter, these compounds are unlikely to undergo significant migration ...
... agricultural and non-agricultural applications, although accidental spills and direct application to soil surfaces can also be considered sources of release. However, because of their strong tendency to adsorb to soils and organic matter, these compounds are unlikely to undergo significant migration ...
pdf
... match observations, and proved valuable in the interpretation of current HCRI results. They are also essential to assess population recovery rates and to identify the environmental changes that may affect this recovery. Inter-annual variability in temperature and food supply, as well as longterm cha ...
... match observations, and proved valuable in the interpretation of current HCRI results. They are also essential to assess population recovery rates and to identify the environmental changes that may affect this recovery. Inter-annual variability in temperature and food supply, as well as longterm cha ...
USGS DDS-43, Non-Native Trout
... Nevada covered in detail in this report. Figure 2. A map showing the historical fishless area in the Sierra Nevada. Figure 3. Frequency histograms showing the elevational distribution of lakes with and without fish within the jurisdiction of Region 5 of the California Department of Fish and Game. Fi ...
... Nevada covered in detail in this report. Figure 2. A map showing the historical fishless area in the Sierra Nevada. Figure 3. Frequency histograms showing the elevational distribution of lakes with and without fish within the jurisdiction of Region 5 of the California Department of Fish and Game. Fi ...
SPECIES AND HABITAT ASSESSMENTS AND CONSERVATION
... Appalachian region than anywhere else in the country; the pattern for land snails is the same. Finally, Mid-Atlantic Coastal Forests contain the most diverse assemblage of freshwater wetlands in all of North America (Ricketts et al. 1999). Among southeastern states, North Carolina contains some of t ...
... Appalachian region than anywhere else in the country; the pattern for land snails is the same. Finally, Mid-Atlantic Coastal Forests contain the most diverse assemblage of freshwater wetlands in all of North America (Ricketts et al. 1999). Among southeastern states, North Carolina contains some of t ...
Appendix C, Part 1
... In a clear reflection of current continental concern for shorebird populations in general, and the importance of this region to migrating shorebirds, 21 of the 28 species that regularly occur in BCR-14 were considered to be of regional conservation concern. Three categories were used to identify pri ...
... In a clear reflection of current continental concern for shorebird populations in general, and the importance of this region to migrating shorebirds, 21 of the 28 species that regularly occur in BCR-14 were considered to be of regional conservation concern. Three categories were used to identify pri ...
Wolverine (Gulo gulo) - Registre public des espèces en péril
... Reason for designation Estimated total population size exceeds 13,000 mature individuals. Declines have been reported in Alberta and parts of British Columbia and Ontario. A distinct subspecies may be extirpated from Vancouver Island. Many pelts used locally are not included in official statistics, ...
... Reason for designation Estimated total population size exceeds 13,000 mature individuals. Declines have been reported in Alberta and parts of British Columbia and Ontario. A distinct subspecies may be extirpated from Vancouver Island. Many pelts used locally are not included in official statistics, ...
fragmentation of terrestrial habitat
... decades, wildlife biologists have assessed effects of habitat fragmentation on wildlife while billions of public and private dollars have been spent on habitat acquisition and wildlife conservation efforts to offset the effects of fragmentation. Recently, however, the conceptual basis of habitat fra ...
... decades, wildlife biologists have assessed effects of habitat fragmentation on wildlife while billions of public and private dollars have been spent on habitat acquisition and wildlife conservation efforts to offset the effects of fragmentation. Recently, however, the conceptual basis of habitat fra ...
Genetic structure of the Daphnia longispina complex in European
... Daphnia (Cladocera) are small crustaceans representing an important component of freshwater zooplankton with many characteristics making them suitable model organisms (summarised in Seda & Petrusek 2011). They are common and geographically widespread almost all over the world. Their body size is spe ...
... Daphnia (Cladocera) are small crustaceans representing an important component of freshwater zooplankton with many characteristics making them suitable model organisms (summarised in Seda & Petrusek 2011). They are common and geographically widespread almost all over the world. Their body size is spe ...
Red-legged Frog Status Determination
... proposed to list the California redlegged frog as endangered, but information obtained during the comment period suggests that this taxon is found in more localities within its current range than previously identified. The California red-legged frog is now found primarily in wetlands and streams in ...
... proposed to list the California redlegged frog as endangered, but information obtained during the comment period suggests that this taxon is found in more localities within its current range than previously identified. The California red-legged frog is now found primarily in wetlands and streams in ...
Conservation Management Plan 2011
... • Pre-construction Period - the period prior to any development occurring within the Cardinia Creek corridor. The objective of this phase is to protect current habitat values for threatened fauna species and maintain the long-term viability of populations currently occupying the study area. ...
... • Pre-construction Period - the period prior to any development occurring within the Cardinia Creek corridor. The objective of this phase is to protect current habitat values for threatened fauna species and maintain the long-term viability of populations currently occupying the study area. ...
National Recovery Plan for the Spotted
... survival of the Spotted-tailed Quoll. An action proposed in this Recovery Plan is to determine measures of habitat quality and to identifiy and map high quality habitat throughout the species’ range (Action 2.4). Given the threatened status of the Spotted-tailed Quoll, all habitats within its ...
... survival of the Spotted-tailed Quoll. An action proposed in this Recovery Plan is to determine measures of habitat quality and to identifiy and map high quality habitat throughout the species’ range (Action 2.4). Given the threatened status of the Spotted-tailed Quoll, all habitats within its ...
Action Plan for the conservation of Wolverines (Gulo gulo) in Europe
... The political development within Europe, particularly within the European Union, with the partial disintegration of national borders and more unified legal and planning requirements, creates new and promising opportunities for the successful management of large carnivore populations on a European wi ...
... The political development within Europe, particularly within the European Union, with the partial disintegration of national borders and more unified legal and planning requirements, creates new and promising opportunities for the successful management of large carnivore populations on a European wi ...
Decline in amphibian populations
Since the 1980s, declines in amphibian populations, including population crashes and mass localized extinctions, have been noted from locations all over the world. These declines are perceived as one of the most critical threats to global biodiversity, and several causes are believed to be involved, including disease, habitat destruction and modification, exploitation, pollution, pesticide use, introduced species, and ultraviolet-B radiation (UV-B). However, many of the causes of amphibian declines are still poorly understood, and the topic is currently a subject of much ongoing research. Calculations based on extinction rates suggest that the current extinction rate of amphibians could be 211 times greater than the background extinction rate and the estimate goes up to 25,000–45,000 times if endangered species are also included in the computation.