Functional traits and remnant populations of plants in abandoned
... cycle could still have a large amount of small vegetative plants despite a low recruitment and sexual reproduction (Warburton et al. 2000). To preserve energy in a suboptimal habitat, or as a strategy to avoid herbivores, plants also posses the capacity of shrinking in size. Previous studies of aba ...
... cycle could still have a large amount of small vegetative plants despite a low recruitment and sexual reproduction (Warburton et al. 2000). To preserve energy in a suboptimal habitat, or as a strategy to avoid herbivores, plants also posses the capacity of shrinking in size. Previous studies of aba ...
The form of direct interspecific competition modifies
... abundance triggers fewer (more) secondary extinctions throughout the whole food web than removing diffuse basal species. Rare asymmetric competitors experience less pressure from consumers compared to rare diffuse competitors. Simulations revealed that diffuse basal species are never involved in ext ...
... abundance triggers fewer (more) secondary extinctions throughout the whole food web than removing diffuse basal species. Rare asymmetric competitors experience less pressure from consumers compared to rare diffuse competitors. Simulations revealed that diffuse basal species are never involved in ext ...
Alternative stable states and regional community structure
... Spatial heterogeneity can arise via processes external to the species themselves. One well-known example comes from mechanistic resource competition models (Tilman, 1988; Grover, 1997). The two consumer species require a minimum amount of each of two essential resources. The line representing the mi ...
... Spatial heterogeneity can arise via processes external to the species themselves. One well-known example comes from mechanistic resource competition models (Tilman, 1988; Grover, 1997). The two consumer species require a minimum amount of each of two essential resources. The line representing the mi ...
Counting the books while the library burns: why conservation
... effect of feral predator control on adult survival rates in a threatened small mammal population?). The use of monitoring in this context can be broadly thought of as “learning” and generally involves using monitoring data to update or compare competing models of cause and effect. For monitoring inf ...
... effect of feral predator control on adult survival rates in a threatened small mammal population?). The use of monitoring in this context can be broadly thought of as “learning” and generally involves using monitoring data to update or compare competing models of cause and effect. For monitoring inf ...
Acadian Flycatcher (Empidonax virescens)
... to access them. Thus, they can likely be more isolated and still be colonized. We assumed the stability of these habitat conditions increased their effective isolation distance to 9 km (Table 14; Figure 11). To calculate relative density, the maximum value from the landcover type and forest age clas ...
... to access them. Thus, they can likely be more isolated and still be colonized. We assumed the stability of these habitat conditions increased their effective isolation distance to 9 km (Table 14; Figure 11). To calculate relative density, the maximum value from the landcover type and forest age clas ...
Threatened Species Conservation Regulation 2010
... undergo within a time span appropriate to the life cycle and habitat characteristics of its component species: (a) for critically endangered ecological communities—a very large reduction in ecological function, or (b) for endangered ecological communities—a large reduction in ecological function, or ...
... undergo within a time span appropriate to the life cycle and habitat characteristics of its component species: (a) for critically endangered ecological communities—a very large reduction in ecological function, or (b) for endangered ecological communities—a large reduction in ecological function, or ...
Coextinction and Persistence of Dependent Species in a Changing
... 2000). Three species of louse had previously been known from wild California condors, and two of them have not, so far, been found elsewhere. But, apparently, no one has systematically searched for these louse species on other bird species, not even on the California condor’s closest relative (Wink ...
... 2000). Three species of louse had previously been known from wild California condors, and two of them have not, so far, been found elsewhere. But, apparently, no one has systematically searched for these louse species on other bird species, not even on the California condor’s closest relative (Wink ...
On chaos, transient chaos and ghosts in single population models
... Here, Nn is the population density at generation n, and f (Nn ) corresponds to the per-capita growth rate of the population. For the sake of clarity, we will briefly explain the dynamics of such models, studied in detail by Schreiber [26]. In these models, very large population densities at time n c ...
... Here, Nn is the population density at generation n, and f (Nn ) corresponds to the per-capita growth rate of the population. For the sake of clarity, we will briefly explain the dynamics of such models, studied in detail by Schreiber [26]. In these models, very large population densities at time n c ...
Population spatial structure, human
... Note that "habitat fragmentation" is often used broadly to include both fragmentation and loss of habitat; in fact "fragmentation" and "deforestation" are often used synonymously (e.g., de Vries & den Boer 1990, Andren & Delin 1994). However, habitat fragmentation and habitat loss have independent e ...
... Note that "habitat fragmentation" is often used broadly to include both fragmentation and loss of habitat; in fact "fragmentation" and "deforestation" are often used synonymously (e.g., de Vries & den Boer 1990, Andren & Delin 1994). However, habitat fragmentation and habitat loss have independent e ...
pdf. - Robert Colwell
... 2000). Three species of louse had previously been known from wild California condors, and two of them have not, so far, been found elsewhere. But, apparently, no one has systematically searched for these louse species on other bird species, not even on the California condor’s closest relative (Wink ...
... 2000). Three species of louse had previously been known from wild California condors, and two of them have not, so far, been found elsewhere. But, apparently, no one has systematically searched for these louse species on other bird species, not even on the California condor’s closest relative (Wink ...
Wildlife corridors - natural resource management information note
... approach is required across both public and private lands to protect and manage natural ecosystems and ensure connectivity between remaining habitats. When native vegetation is cleared, fragmented patches or islands are created. These patches may become increasingly cut-off from other areas of habit ...
... approach is required across both public and private lands to protect and manage natural ecosystems and ensure connectivity between remaining habitats. When native vegetation is cleared, fragmented patches or islands are created. These patches may become increasingly cut-off from other areas of habit ...
PDF, 787 KB
... biodiversity loss. In fact, if the current rate of loss of biological resources is continued, within a few generations that will lead to unprecedented consequences for humankind. The EU and other states have set an objective to halt or significantly reduce the current rate of loss of biodiversity ...
... biodiversity loss. In fact, if the current rate of loss of biological resources is continued, within a few generations that will lead to unprecedented consequences for humankind. The EU and other states have set an objective to halt or significantly reduce the current rate of loss of biodiversity ...
How similar can co-occurring species be in the presence of
... communities result from a number of processes occurring at different spatiotemporal scales. New species arise vía speciation and immigration. Species abundances are shaped by drift and selection, as well as ongoing dispersal. Therefore, selection, speciation, dispersal and ecological drift (understo ...
... communities result from a number of processes occurring at different spatiotemporal scales. New species arise vía speciation and immigration. Species abundances are shaped by drift and selection, as well as ongoing dispersal. Therefore, selection, speciation, dispersal and ecological drift (understo ...
SPECIES-AREA RELATIONSHIPS SPECIES-AREA REL.ATIONSHIPS
... than others for all species, patterns of species aggregation will emerge that do not reflect interspecific interactions (Pielou and Pielou 1968). Variation in site quality is often manifest in total species richness, which should be controlled for in null models of species co-occurrence (Connor and ...
... than others for all species, patterns of species aggregation will emerge that do not reflect interspecific interactions (Pielou and Pielou 1968). Variation in site quality is often manifest in total species richness, which should be controlled for in null models of species co-occurrence (Connor and ...
Species-rich ecosystems are vulnerable to cascading extinctions in an increasingly variable world
... in abundance when rare—the so-called invasibility criterion (MacArthur 1972). One of the conditions for this criterion to be fulfilled is that species differ in their response to the environmental variability. On a similar note, it has been argued that intermediate intensity and frequency of disturb ...
... in abundance when rare—the so-called invasibility criterion (MacArthur 1972). One of the conditions for this criterion to be fulfilled is that species differ in their response to the environmental variability. On a similar note, it has been argued that intermediate intensity and frequency of disturb ...
Habitat destruction and metacommunity size in pen
... regional distribution (Brown 1984; Gaston, Blackburn & Lawton 1997), so most species are believed to be on a continuum between locally rare and having narrow distributions to locally abundant and having broad distributions. This abundance–distribution relationship may change, however, with successio ...
... regional distribution (Brown 1984; Gaston, Blackburn & Lawton 1997), so most species are believed to be on a continuum between locally rare and having narrow distributions to locally abundant and having broad distributions. This abundance–distribution relationship may change, however, with successio ...
Habitat Structure - MSC Program Improvements
... managing, measuring, and mitigating the impacts of fishing on benthic habitats (Grieve et al., 2011). One of the findings from this report is that the MSC does not clearly define the terms “habitat”, “habitat structure”, and “habitat role”, despite the use of these terms in the Habitats Performance ...
... managing, measuring, and mitigating the impacts of fishing on benthic habitats (Grieve et al., 2011). One of the findings from this report is that the MSC does not clearly define the terms “habitat”, “habitat structure”, and “habitat role”, despite the use of these terms in the Habitats Performance ...
Threatened and pest animals of Greater Southern Sydney chapter 3
... 3. Animals of high conservation priority These species are rare and have declined substantially. They are faced with continuing threats, mainly habitat loss or alteration. Most may be conserved by managing key habitats or threats in the region. In this chapter, EPBC Act = Environment Protection and ...
... 3. Animals of high conservation priority These species are rare and have declined substantially. They are faced with continuing threats, mainly habitat loss or alteration. Most may be conserved by managing key habitats or threats in the region. In this chapter, EPBC Act = Environment Protection and ...
Translocation strategies for multiple species depend on interspecific
... Although ignored in translocation guidelines, multispecies translocations already occur frequently. Predator-free areas are scarce and expensive to create (Bode and Wintle 2010), and the increasing number of threatened species encourages managers to move competing species into the same reserves. In ...
... Although ignored in translocation guidelines, multispecies translocations already occur frequently. Predator-free areas are scarce and expensive to create (Bode and Wintle 2010), and the increasing number of threatened species encourages managers to move competing species into the same reserves. In ...
SSP Models and Strategic Habitat Conservation Presentation
... Partnership for coordinated management in time and space Shift from few to many species and habitats ...
... Partnership for coordinated management in time and space Shift from few to many species and habitats ...
Population size and the risk of local extinction: empirical evidence
... Stöcklin 1997) for population size, have also reported negative effects of small population size on survival. In contrast, Husband and Barrett (1996) found no such relationship in Eichhornia paniculata, an aquatic plant of ephemeral pools in north-east Brazil, which they attributed to the frequent ...
... Stöcklin 1997) for population size, have also reported negative effects of small population size on survival. In contrast, Husband and Barrett (1996) found no such relationship in Eichhornia paniculata, an aquatic plant of ephemeral pools in north-east Brazil, which they attributed to the frequent ...
Worksheet - Rudds Classroom
... • Changes would be counteracted by changes in _______________ parts of the system, such as the ________________________ of adaptations to cold weather • The disrupted ecosystem will return to a state of balance, called ______________________ Disruptions in the Ecosystem _____________ disruptions can ...
... • Changes would be counteracted by changes in _______________ parts of the system, such as the ________________________ of adaptations to cold weather • The disrupted ecosystem will return to a state of balance, called ______________________ Disruptions in the Ecosystem _____________ disruptions can ...
Scale
... • Grain = finest unit of mgt (e.g., stand) • Extent = total area under management (e.g., forest) ...
... • Grain = finest unit of mgt (e.g., stand) • Extent = total area under management (e.g., forest) ...
Varanus acanthurus. Photo by Jeff Lemm.
... I ask readers to indulge me and permit some opinions and editorializing. The incomplete fossil record shows that lizards first appeared 150 million years ago—since then many clades have appeared and some have gone extinct (Evans 2003). The oldest varanoid fossils date from about 90 million years ago ...
... I ask readers to indulge me and permit some opinions and editorializing. The incomplete fossil record shows that lizards first appeared 150 million years ago—since then many clades have appeared and some have gone extinct (Evans 2003). The oldest varanoid fossils date from about 90 million years ago ...