New Zealand Journal of Forestry Science
... Given the increasing problem of invasions by forest insects, there is an urgent need to develop effective strategies for managing them. Trends of escalating globalisation impede ongoing efforts to limit the arrival of new species. Consequently, either preventing establishment (through eradication) o ...
... Given the increasing problem of invasions by forest insects, there is an urgent need to develop effective strategies for managing them. Trends of escalating globalisation impede ongoing efforts to limit the arrival of new species. Consequently, either preventing establishment (through eradication) o ...
7th Annual EFJ Public Lecture - The Environmental Foundation of
... ‘Biodiversity Hotspots” are regions of the world that contain a large number of endemic species that are threatened with extinction. Endemic species are those found only in particular places, such as on particular islands – like Jamaica. The Caribbean is one of 25 recognized global hotspots, and Jam ...
... ‘Biodiversity Hotspots” are regions of the world that contain a large number of endemic species that are threatened with extinction. Endemic species are those found only in particular places, such as on particular islands – like Jamaica. The Caribbean is one of 25 recognized global hotspots, and Jam ...
Appendix A: Freshwater Mussels
... Current Species and Habitat Condition in New Hampshire Because eastern pearlshell is a long‐lived species (over 100 years), it is difficult to detect trends in populations without an established long‐term monitoring program, which does not currently exist (Nedeau et al 2000). In other northeast stat ...
... Current Species and Habitat Condition in New Hampshire Because eastern pearlshell is a long‐lived species (over 100 years), it is difficult to detect trends in populations without an established long‐term monitoring program, which does not currently exist (Nedeau et al 2000). In other northeast stat ...
Translocation strategies for multiple species depend on interspecific
... greater bilbies (Macrotis lagotis), and burrowing bettongs (Bettongia lesueur) into the Arid Recovery Reserve in Australia failed because the predation by native and introduced predators was not adequately considered (Moseby et al. 2011). As competition is known to reduce species’ growth rates (Murr ...
... greater bilbies (Macrotis lagotis), and burrowing bettongs (Bettongia lesueur) into the Arid Recovery Reserve in Australia failed because the predation by native and introduced predators was not adequately considered (Moseby et al. 2011). As competition is known to reduce species’ growth rates (Murr ...
Fish and amphibians as bat predators
... their diet by preying on terrestrial vertebrates such as lizards, birds and mammals (Gregg 1945; Lowe et al. 1996; Merritt 2014; O’Brien et al. 2014; Schalk et al. 2014). Moreover, some fishes are even able to catch flying vertebrates such as birds on wing when skimming over the water surface (O’Bri ...
... their diet by preying on terrestrial vertebrates such as lizards, birds and mammals (Gregg 1945; Lowe et al. 1996; Merritt 2014; O’Brien et al. 2014; Schalk et al. 2014). Moreover, some fishes are even able to catch flying vertebrates such as birds on wing when skimming over the water surface (O’Bri ...
effects of western mosquitofish (gambusia affinis)
... was due to the consumption of hatchlings rather than eggs is based on the lack of differences among treatments in the proportion of eggs producing hatchlings, the relatively high proportion of eggs producing hatchlings in all treatments (> 90% in all treatments), and significant differences among tr ...
... was due to the consumption of hatchlings rather than eggs is based on the lack of differences among treatments in the proportion of eggs producing hatchlings, the relatively high proportion of eggs producing hatchlings in all treatments (> 90% in all treatments), and significant differences among tr ...
Changes of diet and dominant intestinal microbes in farmland frogs
... establish a selective environment to prevent emerging pathogens from building up a necessary population size to cause disease. The native microbes can prevent other similar taxa for colonization by high density blocking, and this effect is like the “founder-takes-all” effect of the field of populati ...
... establish a selective environment to prevent emerging pathogens from building up a necessary population size to cause disease. The native microbes can prevent other similar taxa for colonization by high density blocking, and this effect is like the “founder-takes-all” effect of the field of populati ...
The Linkage between Conservation Strategies for Large Carnivores
... on using an infield–outfield system, where livestock were grazed and hay was collected on outfields, while manure from the livestock was used to fertilize the arable infields (Bruteig et al. 2003). Many species of plant, fungi, and insects, for example, depend on the grazing pressure to keep the lan ...
... on using an infield–outfield system, where livestock were grazed and hay was collected on outfields, while manure from the livestock was used to fertilize the arable infields (Bruteig et al. 2003). Many species of plant, fungi, and insects, for example, depend on the grazing pressure to keep the lan ...
Greater bilby - WWF
... of fire to regenerate. Large uncontrolled fires may eventually reduce the type and abundance of food plants available to the bilby. Drought & climate change The greater bilby is only partly adapted to arid environments and thus could be at risk of local extinctions during severe droughts. Changing w ...
... of fire to regenerate. Large uncontrolled fires may eventually reduce the type and abundance of food plants available to the bilby. Drought & climate change The greater bilby is only partly adapted to arid environments and thus could be at risk of local extinctions during severe droughts. Changing w ...
Chapter 10 Gene flow and the evolutionary ecology of
... were generated for all colonies, and a subset of these was further genetically characterized using mitochondrial DNA sequence data (for further details, see Freeland et al. 2000c). Analysis of gene flow and population structure using microsatellites Within each continental region, we characterized p ...
... were generated for all colonies, and a subset of these was further genetically characterized using mitochondrial DNA sequence data (for further details, see Freeland et al. 2000c). Analysis of gene flow and population structure using microsatellites Within each continental region, we characterized p ...
Lecture1 - translated - College of Forestry, University of Guangxi
... • Science is providing explanations for mysteries. • What is ecology? Some big picture ideas of ecology. • Information about our course • My background • Why do you want to study ecology? ...
... • Science is providing explanations for mysteries. • What is ecology? Some big picture ideas of ecology. • Information about our course • My background • Why do you want to study ecology? ...
Society for Conservation Biology
... programs. Several measures are useful for describing infectious diseases in host populations, but it is not straightforward to determine the degree to which a particular disease may affect a host population. The most basic epidemiological theory suggests that populations should be least subject to h ...
... programs. Several measures are useful for describing infectious diseases in host populations, but it is not straightforward to determine the degree to which a particular disease may affect a host population. The most basic epidemiological theory suggests that populations should be least subject to h ...
Effects of tail-clipping on survivorship and growth of
... tiger salamander, 2012. All larvae came from 2 breeding crosses, 1 between colony adults and 1 between wild-caught adults (Jepson). We reared eggs from these crosses in the laboratory and randomly assigned hatchlings to the 4 tail-clipping treatments. The experiment commenced when we transferred lar ...
... tiger salamander, 2012. All larvae came from 2 breeding crosses, 1 between colony adults and 1 between wild-caught adults (Jepson). We reared eggs from these crosses in the laboratory and randomly assigned hatchlings to the 4 tail-clipping treatments. The experiment commenced when we transferred lar ...
Vector Corruption - Department of Fisheries and Wildlife
... ecological stability of the ecosystem by outcompeting natives for breeding sites, prey and other needed resources, disrupting food webs, degrading habitats and altering biodiversity. Additionally, invasive species may have reproductive adaptations which allow them to disperse successfully, tolerate ...
... ecological stability of the ecosystem by outcompeting natives for breeding sites, prey and other needed resources, disrupting food webs, degrading habitats and altering biodiversity. Additionally, invasive species may have reproductive adaptations which allow them to disperse successfully, tolerate ...
the eastern quoll - Australian Wildlife Society
... withstand the loss of a few juveniles, without any negative effects at the population level. However, with quoll populations currently at much lower densities, the loss of only a few juveniles is now enough to prevent populations from recovering. So it seems that a period of unsuitable weather reduc ...
... withstand the loss of a few juveniles, without any negative effects at the population level. However, with quoll populations currently at much lower densities, the loss of only a few juveniles is now enough to prevent populations from recovering. So it seems that a period of unsuitable weather reduc ...
Predation by Oregon Spotted Frogs (Rana pretiosa) on Western
... predators are able to consume adult Bufo, relying either on avoidance of areas of toxin concentration (dorsal skin and parotoid glands) or some resistance to these compounds (Schaaf and Garton, 1970; Corn, 1993). Since Oregon spotted frogs seem undeterred in their predation on juvenile western toads ...
... predators are able to consume adult Bufo, relying either on avoidance of areas of toxin concentration (dorsal skin and parotoid glands) or some resistance to these compounds (Schaaf and Garton, 1970; Corn, 1993). Since Oregon spotted frogs seem undeterred in their predation on juvenile western toads ...
Regional Actions by RCN Project Summary 2-16
... Development of Avian Indicators and Measures (RCN 2007-04) Action: Integrate monitoring into bird management and conservation decision-making processes and ensure that monitoring is aligned with management and conservation priorities. States: All Species: Birds Habitats: All TRACS Level 1: 9 - Plann ...
... Development of Avian Indicators and Measures (RCN 2007-04) Action: Integrate monitoring into bird management and conservation decision-making processes and ensure that monitoring is aligned with management and conservation priorities. States: All Species: Birds Habitats: All TRACS Level 1: 9 - Plann ...
Habitat isolation and ecological barriers
... et al. 1991). It is because not ju st species - area relationships are important in evaluating the effects o f habitat fragmentation. Am ong the huge num ber o f different effects o f habitat fragmentation which are discussed in the literature, at least two groups can be distinguished, i.e. changes ...
... et al. 1991). It is because not ju st species - area relationships are important in evaluating the effects o f habitat fragmentation. Am ong the huge num ber o f different effects o f habitat fragmentation which are discussed in the literature, at least two groups can be distinguished, i.e. changes ...
Flatworms (Schmidtea nova) prey upon embryos of the common frog
... within-clutch developmental variability by scoring the developmental stage of specimens using the scale of Gosner (1960). Until now, a variety of freshwater predators, vertebrates (fish, salamanders) and invertebrates (dragonflies, leeches, and beetles) have been tested for inducing plasticity in ti ...
... within-clutch developmental variability by scoring the developmental stage of specimens using the scale of Gosner (1960). Until now, a variety of freshwater predators, vertebrates (fish, salamanders) and invertebrates (dragonflies, leeches, and beetles) have been tested for inducing plasticity in ti ...
Populations
... decreases, or stays the same EXAMPLE: Hydrilla populations • in their native habitats tend to stay more or less the same size over time • have a growth rate of around zero; (neither increase nor decrease in size) • in Florida, by contrast, has a high growth rate—which means that it increases in size ...
... decreases, or stays the same EXAMPLE: Hydrilla populations • in their native habitats tend to stay more or less the same size over time • have a growth rate of around zero; (neither increase nor decrease in size) • in Florida, by contrast, has a high growth rate—which means that it increases in size ...
Chap.19 Extinction, conservation and restoration
... sometime during the 21st century. • This is equal to the warming of the earth's climate since the last glaciation, only it is happening 50 times faster. • It is likely to cause the worldwide extinction of many species, particularly plants. ...
... sometime during the 21st century. • This is equal to the warming of the earth's climate since the last glaciation, only it is happening 50 times faster. • It is likely to cause the worldwide extinction of many species, particularly plants. ...
Pigmy Bluetongue Lizard Factsheet
... The lizards sit in, or near, their holes while waiting for prey, such as insects, to pass by. The presence of the lizards in a grassland is related to the structure of the grassland, rather than the type of grasses present. Grasslands with open spaces between tussocks are favoured, because the lizar ...
... The lizards sit in, or near, their holes while waiting for prey, such as insects, to pass by. The presence of the lizards in a grassland is related to the structure of the grassland, rather than the type of grasses present. Grasslands with open spaces between tussocks are favoured, because the lizar ...
Relationship of calling intensity to - Research Online
... with the number of males calling at a given time and/or the intensity of their calling activity, usually showing a positive relationship. Humidity also often correlates with calling activity (Almeida-Gomes et al., 2007; Hauselberger and Alford, 2005). These variables are most strongly related to cal ...
... with the number of males calling at a given time and/or the intensity of their calling activity, usually showing a positive relationship. Humidity also often correlates with calling activity (Almeida-Gomes et al., 2007; Hauselberger and Alford, 2005). These variables are most strongly related to cal ...
Local Ecological Communities
... to the biological properties of their components. In considering these alternatives, I try to rely on relatively uncontroversial ecology. I am interested in whether the individualist view of local communities—that they are merely phenomenological—can be rejected and replaced on the basis of common g ...
... to the biological properties of their components. In considering these alternatives, I try to rely on relatively uncontroversial ecology. I am interested in whether the individualist view of local communities—that they are merely phenomenological—can be rejected and replaced on the basis of common g ...
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.