Habitat Management Plan for the endangered Forty
... The Forty-Spotted Pardalote Pardalotus quadragintus, Gould 1838, is a nationally-endangered bird found only in coastal areas and islands of eastern Tasmania. It is assumed the species has never been widespread (Brown 1986) as it is has very specific habitat requirements: low altitude dry sclerophyll ...
... The Forty-Spotted Pardalote Pardalotus quadragintus, Gould 1838, is a nationally-endangered bird found only in coastal areas and islands of eastern Tasmania. It is assumed the species has never been widespread (Brown 1986) as it is has very specific habitat requirements: low altitude dry sclerophyll ...
Coexistence under positive frequency dependence Jane Molofsky , James D. Bever
... allowing the coexistence of competitors. While interactions between species and genotypes can also result in positive frequency dependence, positive frequency dependence has usually been credited with hastening the extinction of rare types and is not thought to contribute to coexistence. In the pres ...
... allowing the coexistence of competitors. While interactions between species and genotypes can also result in positive frequency dependence, positive frequency dependence has usually been credited with hastening the extinction of rare types and is not thought to contribute to coexistence. In the pres ...
The role of biotic forces in driving macroevolution: beyond the Red
... Although the evidence that abiotic change drive macroevolutionary change is beyond dispute (e.g. [12–14]), many palaeobiologists disagree with the categorical idea that abiotic perturbations are the only drivers and allow for a significant role for biotic factors in driving macroevolutionary change ...
... Although the evidence that abiotic change drive macroevolutionary change is beyond dispute (e.g. [12–14]), many palaeobiologists disagree with the categorical idea that abiotic perturbations are the only drivers and allow for a significant role for biotic factors in driving macroevolutionary change ...
Managing open habitats in upland forests
... Aquatic habitats such as streams, rivers, lochs, lakes and ponds (Figure 4b) greatly add to overall forest biodiversity but are easily affected by activities in the catchment – especially near the water’s edge. Their habitat condition needs to be protected and can be improved by positive management ...
... Aquatic habitats such as streams, rivers, lochs, lakes and ponds (Figure 4b) greatly add to overall forest biodiversity but are easily affected by activities in the catchment – especially near the water’s edge. Their habitat condition needs to be protected and can be improved by positive management ...
the effect of habitat change on the structure of dung beetle
... smaller dung beetles belonging to FG IV and V were dominant. None of the indices measuring species richness nor dominance showed significant differences between the four habitats. This does not, however, imply that the dung beetles were similarly affected by the different habitats, because the bioma ...
... smaller dung beetles belonging to FG IV and V were dominant. None of the indices measuring species richness nor dominance showed significant differences between the four habitats. This does not, however, imply that the dung beetles were similarly affected by the different habitats, because the bioma ...
Marine Ecology Progress Series 311:273
... in the structure of biomass which, in turn, means changes in the ways biomass influences ecosystem functioning. For example, it is possible that fluctuations in atmospheric CO2 may have been driven almost entirely by the biosphere over the last 370 million yr (Rothman 2001). This implies that human ...
... in the structure of biomass which, in turn, means changes in the ways biomass influences ecosystem functioning. For example, it is possible that fluctuations in atmospheric CO2 may have been driven almost entirely by the biosphere over the last 370 million yr (Rothman 2001). This implies that human ...
Relative importance of resource quantity, isolation and habitat
... Dennis and Eales (1997) claim that habitat quality is as important as patch size and isolation. Effects of habitat isolation depend on 1) the dispersal ability of a species, 2) the distance to the nearest colonized habitat, and 3) the landscape matrix between habitats including barriers, corridors ...
... Dennis and Eales (1997) claim that habitat quality is as important as patch size and isolation. Effects of habitat isolation depend on 1) the dispersal ability of a species, 2) the distance to the nearest colonized habitat, and 3) the landscape matrix between habitats including barriers, corridors ...
Diversity and Distribution of Spiders in Southwestern Nigeria
... many spiders that give various nasty bites comparable to the stinging of a wasp. Most of the venom injected with these bites causes cell death and give rise to a wound that does not heal properly and becomes easily infected, such spiders are not found in the course of this study. In hill habitat, ni ...
... many spiders that give various nasty bites comparable to the stinging of a wasp. Most of the venom injected with these bites causes cell death and give rise to a wound that does not heal properly and becomes easily infected, such spiders are not found in the course of this study. In hill habitat, ni ...
Evolution and the latitudinal diversity gradient
... temperate zone do not differ with respect to diversification rate, but richness asymptotes at different levels due to ecological factors (e.g. niche availability). (b) The tropics have a higher diversification rate (speciation rate–extinction rate) than the temperate zone and thus accumulate species ...
... temperate zone do not differ with respect to diversification rate, but richness asymptotes at different levels due to ecological factors (e.g. niche availability). (b) The tropics have a higher diversification rate (speciation rate–extinction rate) than the temperate zone and thus accumulate species ...
The potential role of ecological corridors for habitat conservation in
... corridors have little potential for plants. Diaspore dispersal by livestock and wild mammals and birds is nevertheless important, and emphasis should be on maintaining animal movement within the landscape, especially in areas such as the Burren. The effectiveness of regional corridors is considerabl ...
... corridors have little potential for plants. Diaspore dispersal by livestock and wild mammals and birds is nevertheless important, and emphasis should be on maintaining animal movement within the landscape, especially in areas such as the Burren. The effectiveness of regional corridors is considerabl ...
When Good Animals Love Bad Habitats: Ecological Traps and the
... which it is negative. The fourth (Kristan 2003) models a landscape containing a continuum of habitats spanning a range of quality and attractiveness and operates in continuous time. Taken together, ecological trap models yield the following conclusions. (1) Ecological traps usually lead to populatio ...
... which it is negative. The fourth (Kristan 2003) models a landscape containing a continuum of habitats spanning a range of quality and attractiveness and operates in continuous time. Taken together, ecological trap models yield the following conclusions. (1) Ecological traps usually lead to populatio ...
Habitat selection by feral cats and dingoes in a
... feral cats appears consistent with the consumerresource model. At our study site, resources are unlikely to be renewed at a constant rate given the vagaries of arid ecosystems (Noy-Meir 1973; Caughley 1987) nor consumed by feral cats as soon as they are renewed given that: (i) feral cats occur at re ...
... feral cats appears consistent with the consumerresource model. At our study site, resources are unlikely to be renewed at a constant rate given the vagaries of arid ecosystems (Noy-Meir 1973; Caughley 1987) nor consumed by feral cats as soon as they are renewed given that: (i) feral cats occur at re ...
the maintenance of species diversity by disturbance
... there are trade-offs in species-specific abilities that place constraints on immigration to, and extinction in, patches. Changes in immigration andextinction, the processes that govern patch diversity, depend on species-specific abilities to fend off competitors or to endure disturbances. Members of ...
... there are trade-offs in species-specific abilities that place constraints on immigration to, and extinction in, patches. Changes in immigration andextinction, the processes that govern patch diversity, depend on species-specific abilities to fend off competitors or to endure disturbances. Members of ...
Alternative causes of edge-abundance relationships in birds and
... of animals relative to edge, even if the animals consistently respond to the changes in habitat when they occur (i.e. a ‘‘matrix effect’’). Conversely, similar patterns of change in abundance among species at a particular edge can be caused by different mechanisms, in that an ‘‘ecotonal effect’’ in ...
... of animals relative to edge, even if the animals consistently respond to the changes in habitat when they occur (i.e. a ‘‘matrix effect’’). Conversely, similar patterns of change in abundance among species at a particular edge can be caused by different mechanisms, in that an ‘‘ecotonal effect’’ in ...
Habitat selection as a major resource partitioning mechanism
... rather than resource acquisition per se "i[e[ they use mere characters\ and infer mechanisms from patterns^ Wiens 0878#[ For instance\ a spacing in resource par! titioning has been suggested from the even apportion! ment of ultrasonic frequencies within bat assemblages including up to 01 syntopic rh ...
... rather than resource acquisition per se "i[e[ they use mere characters\ and infer mechanisms from patterns^ Wiens 0878#[ For instance\ a spacing in resource par! titioning has been suggested from the even apportion! ment of ultrasonic frequencies within bat assemblages including up to 01 syntopic rh ...
Invasion in a heterogeneous world: resistance, coexistence or
... community membership, especially extinction of native species (e.g. number of native species driven to extinction). While it is easy to verify extinction in models, it can be problematic in empirical studies, and care must be taken to specify the scale at which extinction occurs (Fig. 2). Decline in ...
... community membership, especially extinction of native species (e.g. number of native species driven to extinction). While it is easy to verify extinction in models, it can be problematic in empirical studies, and care must be taken to specify the scale at which extinction occurs (Fig. 2). Decline in ...
Inverse density dependence and the Allee effect
... Fig. 2. Examples of the Allee effect in different taxa. (a) Because of a shortage of fertilization or of mating encounters, Allee effects can cause species extinction when density is too low. This is illustrated by pollination in fig trees (Ficus sp.), where small dispersed patches attract fewer pol ...
... Fig. 2. Examples of the Allee effect in different taxa. (a) Because of a shortage of fertilization or of mating encounters, Allee effects can cause species extinction when density is too low. This is illustrated by pollination in fig trees (Ficus sp.), where small dispersed patches attract fewer pol ...
Bellevue Urban Wildlife Habitat Literature Review
... urban, a peak in species richness in many taxa, including plants, occurs at intermediate development levels. This peak is likely the result of habitat heterogeneity as components of remaining native habitat are interspersed with varying degrees of human disturbance, which may include artificial feed ...
... urban, a peak in species richness in many taxa, including plants, occurs at intermediate development levels. This peak is likely the result of habitat heterogeneity as components of remaining native habitat are interspersed with varying degrees of human disturbance, which may include artificial feed ...
Action
... location, species inventory, condition and type of habitat. * Identify habitats of greatest conservation significance, including critical habitat for threatened species. * Map the areas of habitat identified above. * Update database on a regular basis. Identify key processes and actions that threate ...
... location, species inventory, condition and type of habitat. * Identify habitats of greatest conservation significance, including critical habitat for threatened species. * Map the areas of habitat identified above. * Update database on a regular basis. Identify key processes and actions that threate ...
Common Name (Scientific name)
... Foraging activity is positively associated with tree height diversity (North et al. 1999, p. 524), canopy closure (Irwin et al. 2000, p. 180; Courtney et al. 2004, p. 5– 15), snag volume, density of snags greater than 20 in (50 cm) dbh (North et al. 1999, p. 524; Irwin et al. 2000, pp. 179 to 180; C ...
... Foraging activity is positively associated with tree height diversity (North et al. 1999, p. 524), canopy closure (Irwin et al. 2000, p. 180; Courtney et al. 2004, p. 5– 15), snag volume, density of snags greater than 20 in (50 cm) dbh (North et al. 1999, p. 524; Irwin et al. 2000, pp. 179 to 180; C ...
here - cloudfront.net
... properly address cumulative impacts. Specifically, the Act does not include a mechanism to manage the many actions (such as private native forestry projects in NSW) which may individually fail to meet the ‘significant impact’ test, but in combination are likely to significantly increase koala mortal ...
... properly address cumulative impacts. Specifically, the Act does not include a mechanism to manage the many actions (such as private native forestry projects in NSW) which may individually fail to meet the ‘significant impact’ test, but in combination are likely to significantly increase koala mortal ...
Landscape size affects the relative importance of habitat amount
... It is important to understand the relative effects of landscape habitat loss, habitat fragmentation, and matrix quality on biodiversity, so that potential management options can be appropriately ranked. However, their effects and relative importance may change with the size of the landscape consider ...
... It is important to understand the relative effects of landscape habitat loss, habitat fragmentation, and matrix quality on biodiversity, so that potential management options can be appropriately ranked. However, their effects and relative importance may change with the size of the landscape consider ...
PDF, 704KB - Conservation Biology
... The availability of food and shelter are the two most important factors affecting a hare’s habitat use (Bisi et al. 2013; Hewson and Hinge 1990; Hiltunen et al. 2004; Hulbert et al. 1996; Keith and Windberg 1978; Nodari 2006; Pehrson and Lindlöf 1984; Wolff 1980). Previous studies have shown that th ...
... The availability of food and shelter are the two most important factors affecting a hare’s habitat use (Bisi et al. 2013; Hewson and Hinge 1990; Hiltunen et al. 2004; Hulbert et al. 1996; Keith and Windberg 1978; Nodari 2006; Pehrson and Lindlöf 1984; Wolff 1980). Previous studies have shown that th ...
Part 5:Regional Shorebird Conservation Goals and Strategies
... Because of its size and northerly position, Alaska provides breeding habitat for more shorebird species than any other state in the U.S. Seventy-one species of shorebirds have occurred in Alaska; 37 of them, including several unique Beringian species and Old World subspecies, regularly breed in the ...
... Because of its size and northerly position, Alaska provides breeding habitat for more shorebird species than any other state in the U.S. Seventy-one species of shorebirds have occurred in Alaska; 37 of them, including several unique Beringian species and Old World subspecies, regularly breed in the ...