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Habitat related differences in the survivorship and
... was intermediate, with a mean of 37 % . Presence of conspecific adults did not significantly influence survivorship of juveniles in any habitat. Cause of mortality in this experiment is unknown and warrants detailed investigation. Implications of these results in the interpretation of the impact of ...
... was intermediate, with a mean of 37 % . Presence of conspecific adults did not significantly influence survivorship of juveniles in any habitat. Cause of mortality in this experiment is unknown and warrants detailed investigation. Implications of these results in the interpretation of the impact of ...
Endangered Species Act
... check and weeding out disease among prey Photo: Colorado Division of Wildlife species. This in turn helps the whole ecosystem remain balanced. Restoring the lynx will require conserving critical old growth forest habitat, thoughtfully managing recreation and motorized travel, and protecting key wild ...
... check and weeding out disease among prey Photo: Colorado Division of Wildlife species. This in turn helps the whole ecosystem remain balanced. Restoring the lynx will require conserving critical old growth forest habitat, thoughtfully managing recreation and motorized travel, and protecting key wild ...
Laurance 2008 - Reed F. Noss Lab at the University of Central
... relationships is a litmus test for IBT (Gilbert, 1980; Abbott, 1983) because other biogeographic phenomena, such as the species–area relationship, can arise for reasons aside from those hypothesized by IBT (for example, higher habitat diversity, rather than lower extinction rates, can cause species ...
... relationships is a litmus test for IBT (Gilbert, 1980; Abbott, 1983) because other biogeographic phenomena, such as the species–area relationship, can arise for reasons aside from those hypothesized by IBT (for example, higher habitat diversity, rather than lower extinction rates, can cause species ...
This page is also available as a
... This reptile is the most widespread of the New World Crocodiles. They are mostly found in coastal habitats such as lagoons and mangroves but also inhabit freshwater. Their main prey is fish but adults have been known to hunt animals as large as cattle. A male adult can grow to nearly 4.5m long. Over ...
... This reptile is the most widespread of the New World Crocodiles. They are mostly found in coastal habitats such as lagoons and mangroves but also inhabit freshwater. Their main prey is fish but adults have been known to hunt animals as large as cattle. A male adult can grow to nearly 4.5m long. Over ...
19-Population ecology
... down. Eventually, the growth rate will plateau or level off (Figure 19.5b). This population size, which is determined by the maximum population size that a particular environment can sustain, is called the carrying capacity, or K. In real populations, a growing population often overshoots its carryi ...
... down. Eventually, the growth rate will plateau or level off (Figure 19.5b). This population size, which is determined by the maximum population size that a particular environment can sustain, is called the carrying capacity, or K. In real populations, a growing population often overshoots its carryi ...
Trade-offs in community ecology: linking spatial scales and species
... A meta-community contains a group of species that potentially interact, and that are spatially segregated into distinct patches connected by dispersal (Wilson 1992). Within the meta-community context, trade-offs are still often heralded as essential for coexistence at a regional scale rather than lo ...
... A meta-community contains a group of species that potentially interact, and that are spatially segregated into distinct patches connected by dispersal (Wilson 1992). Within the meta-community context, trade-offs are still often heralded as essential for coexistence at a regional scale rather than lo ...
pdf reprint
... was despite logic that showed why these theories may not be applicable, as the same theory could be used to predict that many small fragments of contrasting habitats may conserve more species than do large fragments (Simberloff and Abele 1976). Still, it came as a surprise that results were inconsis ...
... was despite logic that showed why these theories may not be applicable, as the same theory could be used to predict that many small fragments of contrasting habitats may conserve more species than do large fragments (Simberloff and Abele 1976). Still, it came as a surprise that results were inconsis ...
comparative evaluation of experimental
... process linkages from the complex network that forms the whole fragmentation process, and ask relatively simple questions. For example, what are the relationships among patch area, patch shape, patch isolation, edge, the interaction of these factors, and various population (e.g., predation, reproduc ...
... process linkages from the complex network that forms the whole fragmentation process, and ask relatively simple questions. For example, what are the relationships among patch area, patch shape, patch isolation, edge, the interaction of these factors, and various population (e.g., predation, reproduc ...
Non-random gene flow: an underappreciated force in evolution and
... when dispersing from a lake into a shallow stream, contributing to genetic divergence between small-bodied upstream and more variable lake-breeding populations [39]. The effects of selection during dispersal can also be delayed, arising via reduced fecundity or longevity of poor dispersers after arr ...
... when dispersing from a lake into a shallow stream, contributing to genetic divergence between small-bodied upstream and more variable lake-breeding populations [39]. The effects of selection during dispersal can also be delayed, arising via reduced fecundity or longevity of poor dispersers after arr ...
Demographic Costs Associated with Differences in Habitat Space
... for determining the environmental conditions associated with a species’ distribution or abundance [9–11]. The distributional patterns are based on broad scale occupancy and estimates of environmental factors at the macroecological level. However, these patterns can be associated with spatially corre ...
... for determining the environmental conditions associated with a species’ distribution or abundance [9–11]. The distributional patterns are based on broad scale occupancy and estimates of environmental factors at the macroecological level. However, these patterns can be associated with spatially corre ...
Lesson Plan 2: Current Status and Distribution of Bull
... Threatened Species is a legal designation under the federal Endangered Species Act. It means that any species listed as Threatened is a species that is likely to become endangered in the foreseeable future throughout all or a significant portion of its range. A viable population refers to a populati ...
... Threatened Species is a legal designation under the federal Endangered Species Act. It means that any species listed as Threatened is a species that is likely to become endangered in the foreseeable future throughout all or a significant portion of its range. A viable population refers to a populati ...
(Galaxias fuscus) for conservation purposes
... must be available and likely sustained. The waters should have sufficient capacity to sustain survival and growth of the translocated population and support a viable population in the long term. The catchment should have high water security and minimal or no populationthreatening disturbance from, f ...
... must be available and likely sustained. The waters should have sufficient capacity to sustain survival and growth of the translocated population and support a viable population in the long term. The catchment should have high water security and minimal or no populationthreatening disturbance from, f ...
Interactive effects of habitat modification and species invasion on
... invasive species, with total impact scaling disproportionately with invader abundance (a ‘per capita’ or functionally moderated process) [18]. Although both of these processes can lead to increased impact in modified habitats, we formalise the distinction between numerical and functional effects, an ...
... invasive species, with total impact scaling disproportionately with invader abundance (a ‘per capita’ or functionally moderated process) [18]. Although both of these processes can lead to increased impact in modified habitats, we formalise the distinction between numerical and functional effects, an ...
spatial selection and inheritance
... and the spatial distribution of populations in heterogeneous space, and focuses empirical efforts on critical parameters estimable from field data. In addition, it highlights the generality of selection and inheritance as mechanisms of ecological as well as evolutionary change and provides opportunit ...
... and the spatial distribution of populations in heterogeneous space, and focuses empirical efforts on critical parameters estimable from field data. In addition, it highlights the generality of selection and inheritance as mechanisms of ecological as well as evolutionary change and provides opportunit ...
Ballarat West Growth Area
... construction of housing, associated infrastructure and recreational opportunities. As such, the Project triggers a number of known threatening processes affecting this species, principally habitat loss via the removal of known GGF habitat to consolidate the Project’s layout. Thus, without mitigation ...
... construction of housing, associated infrastructure and recreational opportunities. As such, the Project triggers a number of known threatening processes affecting this species, principally habitat loss via the removal of known GGF habitat to consolidate the Project’s layout. Thus, without mitigation ...
Wallum Sedge Frog - Byron Shire Council
... Habitat Loss and Modification Wallum Sedge Frogs are restricted to an area of eastern Australia currently experiencing increased urban and rural growth. Although there are large areas of known habitat within conservation reserves, these reserves and smaller areas of habitat outside reserves are beco ...
... Habitat Loss and Modification Wallum Sedge Frogs are restricted to an area of eastern Australia currently experiencing increased urban and rural growth. Although there are large areas of known habitat within conservation reserves, these reserves and smaller areas of habitat outside reserves are beco ...
Review of nekton patterns and ecological processes
... reflect the overriding importance of other factors such as within-patch characteristics, water depth or position within an estuary. It might also result from measurements at the wrong scale. The rigour of surveys can be improved by avoiding confounding of patch attributes by other factors, increasin ...
... reflect the overriding importance of other factors such as within-patch characteristics, water depth or position within an estuary. It might also result from measurements at the wrong scale. The rigour of surveys can be improved by avoiding confounding of patch attributes by other factors, increasin ...
Is nest predation on two endangered bird species higher in habitats
... radio transmitters), however, we did not find clear relationships between snake habitat preference and avian nest survival. Our results, in conjunction with those of another study, suggest that warbler nests were at greater risk if edge was abundant near the nest. Thus, reducing edge could promote n ...
... radio transmitters), however, we did not find clear relationships between snake habitat preference and avian nest survival. Our results, in conjunction with those of another study, suggest that warbler nests were at greater risk if edge was abundant near the nest. Thus, reducing edge could promote n ...
Paddock trees in agricultural landscapes (PDF - 460KB)
... gradually diminish unless there are changes to land use practices. This is because paddock trees will senesce with time - often accelerated by factors associated with dieback – and will not be replaced because recruitment does not typically occur in these environments. Estimates of annual mortality ...
... gradually diminish unless there are changes to land use practices. This is because paddock trees will senesce with time - often accelerated by factors associated with dieback – and will not be replaced because recruitment does not typically occur in these environments. Estimates of annual mortality ...
Non-random gene flow: an underappreciated force in
... when dispersing from a lake into a shallow stream, contributing to genetic divergence between small-bodied upstream and more variable lake-breeding populations [39]. The effects of selection during dispersal can also be delayed, arising via reduced fecundity or longevity of poor dispersers after arr ...
... when dispersing from a lake into a shallow stream, contributing to genetic divergence between small-bodied upstream and more variable lake-breeding populations [39]. The effects of selection during dispersal can also be delayed, arising via reduced fecundity or longevity of poor dispersers after arr ...
Documented Impacts
... Mechanical and chemical methods were used to increase forage production for livestock and reduce or remove sagebrush. Conservation Assessment 7-28. The area of sagebrush “treated” between 1940 and 1994 on BLM land totaled over 180,000 km2. Conservation Assessment 7-28. Excessive stocking and little ...
... Mechanical and chemical methods were used to increase forage production for livestock and reduce or remove sagebrush. Conservation Assessment 7-28. The area of sagebrush “treated” between 1940 and 1994 on BLM land totaled over 180,000 km2. Conservation Assessment 7-28. Excessive stocking and little ...
Staddon et al 2010
... continuous habitat. These treatments are similar to a design previously used (Gilbert et al. 1998; Gonzalez et al. 1998) in the field. Microcosms were constructed of 30-mm thick, 240-mm square PVC base with four 70-mm-diameter subchambers in each corner (see Fig. S1). Each subchamber was 60-mm heigh ...
... continuous habitat. These treatments are similar to a design previously used (Gilbert et al. 1998; Gonzalez et al. 1998) in the field. Microcosms were constructed of 30-mm thick, 240-mm square PVC base with four 70-mm-diameter subchambers in each corner (see Fig. S1). Each subchamber was 60-mm heigh ...
11 Sexual segregation in ungulates: from individual
... Some assumptions must be met for animals to aggregate in groups (see also Krause & Ruxton, 2002). Aggregation occurs by interattraction between mobile individuals, via visual contact for most of the wild ungulate species (see Gerard et al., 2002), even though olfactory or auditory stimuli may also b ...
... Some assumptions must be met for animals to aggregate in groups (see also Krause & Ruxton, 2002). Aggregation occurs by interattraction between mobile individuals, via visual contact for most of the wild ungulate species (see Gerard et al., 2002), even though olfactory or auditory stimuli may also b ...
Population dynamics of large and small mammals
... moves on but a variety of ecologists have argued that we do not operate this way in ecology (Peters 1991; O’Connor 2000). The problems of population dynamics have been addressed with vigour for more than 50 years and some ecologists have argued that they are now solved and we can move on. Unfortunat ...
... moves on but a variety of ecologists have argued that we do not operate this way in ecology (Peters 1991; O’Connor 2000). The problems of population dynamics have been addressed with vigour for more than 50 years and some ecologists have argued that they are now solved and we can move on. Unfortunat ...