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How variation between individuals affects species coexistence
... we assume that inferior and superior species have the same amount of intraspecific variation, and we relax this assumption in a subsequent analysis. We describe individual variation in competitive sensitivity with symmetric, four-parameter beta distributions, which allows us to define reasonable pos ...
... we assume that inferior and superior species have the same amount of intraspecific variation, and we relax this assumption in a subsequent analysis. We describe individual variation in competitive sensitivity with symmetric, four-parameter beta distributions, which allows us to define reasonable pos ...
Oakville Wildlife Strategy (OWLS)
... Livable Oakville is the town’s official plan and establishes the policies and land use designations and mapping for coordinating land use and infrastructure requirements to meet anticipated growth within the town south of Dundas street and north of Highway 407. The Livable Oakville Plan establishes ...
... Livable Oakville is the town’s official plan and establishes the policies and land use designations and mapping for coordinating land use and infrastructure requirements to meet anticipated growth within the town south of Dundas street and north of Highway 407. The Livable Oakville Plan establishes ...
Response of native and introduced fishes to presumed antipredator
... 1979, 1984). Because hellbenders are completely aquatic, fishes are probably the most important predators of hellbenders and their larvae; however, the influence of secretions on predator-prey interactions between hellbenders and fishes has not been studied. The hypothesis that predation from introd ...
... 1979, 1984). Because hellbenders are completely aquatic, fishes are probably the most important predators of hellbenders and their larvae; however, the influence of secretions on predator-prey interactions between hellbenders and fishes has not been studied. The hypothesis that predation from introd ...
Applying the Reference Site Model to Riparian Restoration Sites in
... no existing protocol for the use of reference-based restoration (Cairns 1991; Palmer et al. 2005); therefore, reference-based restoration efforts have led to a wide spectrum of restoration trajectories, especially in urban stream ecosystems (Beechie et al. 2010). Urban streams represent some of the ...
... no existing protocol for the use of reference-based restoration (Cairns 1991; Palmer et al. 2005); therefore, reference-based restoration efforts have led to a wide spectrum of restoration trajectories, especially in urban stream ecosystems (Beechie et al. 2010). Urban streams represent some of the ...
General and Systematic ENTOMOLOGY
... Only Archeognatha (jumping bristletails) and Zygentoma are primarily wingless. Other orders (subclass Pterygota [winged insects]) are primarily winged. If winglessness occurs here, it is only secondary (e.g. Siphonaptera [fleas]). In secondarily wingless groups one often sees that their closest rela ...
... Only Archeognatha (jumping bristletails) and Zygentoma are primarily wingless. Other orders (subclass Pterygota [winged insects]) are primarily winged. If winglessness occurs here, it is only secondary (e.g. Siphonaptera [fleas]). In secondarily wingless groups one often sees that their closest rela ...
The Role of Body Size in Complex Food Webs: A Cold - ePIC
... this food web and developing a new classification scheme (i.e. sorting consumers into 11 different categories) which takes different consumer traits into account and includes feeding strategy (predator, grazer, etc.), prey type (herbivore, etc.), motility and habitat. Based on the recent theoretical ...
... this food web and developing a new classification scheme (i.e. sorting consumers into 11 different categories) which takes different consumer traits into account and includes feeding strategy (predator, grazer, etc.), prey type (herbivore, etc.), motility and habitat. Based on the recent theoretical ...
NATIONAL ECOLOGICAL NETWORK NO. 3.
... In the following vegetation types of ‘mires’ are described where no peat ...
... In the following vegetation types of ‘mires’ are described where no peat ...
what do we mean by biodiversity?
... use biodiversity in a technical sense at any level, specify what exactly they mean by it and why they are considering such definition. However, this immediate solution proliferates definitions and compounds the problem in the long run (Peters 1991). For example, phylogenetic distance has been sugges ...
... use biodiversity in a technical sense at any level, specify what exactly they mean by it and why they are considering such definition. However, this immediate solution proliferates definitions and compounds the problem in the long run (Peters 1991). For example, phylogenetic distance has been sugges ...
The role of selection within plant communities for ecosystem
... principle proposed that for species to coexist they must have different niches for if the niches of two species would completely overlap only one species could survive interspecific competition (Gause and Witt 1935). Grime proposed that an organism that is a strong competitor for one resource would ...
... principle proposed that for species to coexist they must have different niches for if the niches of two species would completely overlap only one species could survive interspecific competition (Gause and Witt 1935). Grime proposed that an organism that is a strong competitor for one resource would ...
Regional recovery plan for threatened species and ecological
... be declining. Many others have small population sizes and/or a limited number of sub-populations. Many species are considered disjunct from the remainder of their ranges, or are part of a limited distribution within the State. Not all threatened species which occur in AMLR that have a legislative co ...
... be declining. Many others have small population sizes and/or a limited number of sub-populations. Many species are considered disjunct from the remainder of their ranges, or are part of a limited distribution within the State. Not all threatened species which occur in AMLR that have a legislative co ...
A Guide to Selling Native Prairie Seed in Nebraska
... and encouraged during a selection process. They have a proven record of success that makes them useful in the areas where they are adapted for use. However, there are some scientists who are concerned that they can be detrimental because of the potential for swamping out local genetic diversity, and ...
... and encouraged during a selection process. They have a proven record of success that makes them useful in the areas where they are adapted for use. However, there are some scientists who are concerned that they can be detrimental because of the potential for swamping out local genetic diversity, and ...
this thesis - Waddenacademie
... land claim and current sea-level rise on salt-marsh erosion. In times of relative sealevel rise (i.e. a combination of land subsidence and eustatic sea-level rise) salt marshes must increase in elevation to avoid being ‘ecologically drowned’. This has generated the assumption that salt marshes have ...
... land claim and current sea-level rise on salt-marsh erosion. In times of relative sealevel rise (i.e. a combination of land subsidence and eustatic sea-level rise) salt marshes must increase in elevation to avoid being ‘ecologically drowned’. This has generated the assumption that salt marshes have ...
Feral Swine in North America
... Feral Swine in North America Introduction and Biology Feral swine (Sus scrofa) are members of the domestic swine family Suidae, which is native to Europe and Asia, not North America. Feral swine should not be confused with North America’s only native pig-like animal – the collared peccary, or javeli ...
... Feral Swine in North America Introduction and Biology Feral swine (Sus scrofa) are members of the domestic swine family Suidae, which is native to Europe and Asia, not North America. Feral swine should not be confused with North America’s only native pig-like animal – the collared peccary, or javeli ...
species introduction and replacement among mosquitoes
... spread of A. albopictus appears to be strongly correlated with declines in the prevalence of A. aegypti at some, but not all sites in Florida (O’Meara et al. 1993, 1995, Hornby et al. 1994) and other parts of North America (Hobbs et al. 1991, Mekuria and Hyatt 1995). Often, A. albopictus appears to ...
... spread of A. albopictus appears to be strongly correlated with declines in the prevalence of A. aegypti at some, but not all sites in Florida (O’Meara et al. 1993, 1995, Hornby et al. 1994) and other parts of North America (Hobbs et al. 1991, Mekuria and Hyatt 1995). Often, A. albopictus appears to ...
40 Anniversary Conference Gesellschaft für Ökologie
... In this year we will celebrate the 40 anniversary of the GfÖ. As I have mentioned before, we actually celebrate the birth of a great idea, since the inscription of our society into the forms of the district court took place a little bit later. However, I consider the birth of an idea to be much more ...
... In this year we will celebrate the 40 anniversary of the GfÖ. As I have mentioned before, we actually celebrate the birth of a great idea, since the inscription of our society into the forms of the district court took place a little bit later. However, I consider the birth of an idea to be much more ...
Ben-Gurion University of the Negev
... intensify with the rise in Ta (O'Brien et al. 2006). There has long been a controversy regarding the effects of water developments on local wildlife, in which critics argue that these developments do not yield expected benefits to game species and may have adverse impacts, such as affecting prey spe ...
... intensify with the rise in Ta (O'Brien et al. 2006). There has long been a controversy regarding the effects of water developments on local wildlife, in which critics argue that these developments do not yield expected benefits to game species and may have adverse impacts, such as affecting prey spe ...
Recruitment facilitation can promote coexistence and buffer population growth in metacommunities
... this mismatch predicts that high recruitment rates will generate strong negative interactions (i.e. competition and predation) that will erode the relationship between recruitment and abundance, whereas low recruitment rates will lead to weak negative interactions, and thus a stronger match between ...
... this mismatch predicts that high recruitment rates will generate strong negative interactions (i.e. competition and predation) that will erode the relationship between recruitment and abundance, whereas low recruitment rates will lead to weak negative interactions, and thus a stronger match between ...
Leaf gas exchange responses of 13 prairie grassland
... data from species measured in both 1998 and 1999 were analysed by repeated measures ANOVA including year in the model. Year as a main effect was significant (P < 0.01) for seven of the nine variables. The CO2 treatment × year interaction was not significant (P > 0.25) for any variable, however, in t ...
... data from species measured in both 1998 and 1999 were analysed by repeated measures ANOVA including year in the model. Year as a main effect was significant (P < 0.01) for seven of the nine variables. The CO2 treatment × year interaction was not significant (P > 0.25) for any variable, however, in t ...
Deep-Sea Hydrothermal Vent Communities C
... by the physical and chemical environment, which sets limits on species’ distributions and abundances. Invertebrate species interactions determine community composition within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge establi ...
... by the physical and chemical environment, which sets limits on species’ distributions and abundances. Invertebrate species interactions determine community composition within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge establi ...
MS Word Document - 2.1 MB - Department of Environment, Land
... 24 months post-burn. For locations with native species at risk from fox predation, the instigation of a broad-scale fox reduction program would be advisable. This program should commence 2–3 months before the planned burn is scheduled, because it takes time to reduce the local fox population. Fox co ...
... 24 months post-burn. For locations with native species at risk from fox predation, the instigation of a broad-scale fox reduction program would be advisable. This program should commence 2–3 months before the planned burn is scheduled, because it takes time to reduce the local fox population. Fox co ...
Fatal attraction: adaptations to prey on native frogs imperil snakes
... mechanical harvesting of hay prior to fledging (Best 1986). In this example, the suite of habitat-selection behaviours that now reduce fitness was termed an ‘ecological trap’, enforced by the mismatch between historically adapted behavioural rules (Darwinian algorithms) and the current selective env ...
... mechanical harvesting of hay prior to fledging (Best 1986). In this example, the suite of habitat-selection behaviours that now reduce fitness was termed an ‘ecological trap’, enforced by the mismatch between historically adapted behavioural rules (Darwinian algorithms) and the current selective env ...
Fatal attraction: adaptations to prey on native frogs imperil snakes
... morphologies and behaviours that switch instantaneously from enhancing to reducing fitness due to a sudden change in the organism’s environment—such as the arrival of an invasive species. Our studies in tropical Australia reveal exactly this situation. A snake species exhibits complex behavioural an ...
... morphologies and behaviours that switch instantaneously from enhancing to reducing fitness due to a sudden change in the organism’s environment—such as the arrival of an invasive species. Our studies in tropical Australia reveal exactly this situation. A snake species exhibits complex behavioural an ...
Fatal attraction: adaptations to prey on native frogs
... morphologies and behaviours that switch instantaneously from enhancing to reducing fitness due to a sudden change in the organism’s environment—such as the arrival of an invasive species. Our studies in tropical Australia reveal exactly this situation. A snake species exhibits complex behavioural an ...
... morphologies and behaviours that switch instantaneously from enhancing to reducing fitness due to a sudden change in the organism’s environment—such as the arrival of an invasive species. Our studies in tropical Australia reveal exactly this situation. A snake species exhibits complex behavioural an ...
The characteristics and success of vertebrate translocations within
... 1880s, Tammar Wallaby to Greenly Island in South Australia in 1905, and Red-bellied Pademelon to Wilsons’ Promontory in Victoria in 1911. These were followed by the largely futile efforts to conserve threatened native mammals in the 1920s and 1930s in South Australia and New South Wales by marooning ...
... 1880s, Tammar Wallaby to Greenly Island in South Australia in 1905, and Red-bellied Pademelon to Wilsons’ Promontory in Victoria in 1911. These were followed by the largely futile efforts to conserve threatened native mammals in the 1920s and 1930s in South Australia and New South Wales by marooning ...
report - Wildlife Research and Management
... threatened at the national level. Roughly equal numbers of individuals of threatened and nonthreatened bird species were translocated. Little Penguin was the bird species with the most individuals translocated – over 800 were translocated following an oil spill off the coast of Tasmania. The major f ...
... threatened at the national level. Roughly equal numbers of individuals of threatened and nonthreatened bird species were translocated. Little Penguin was the bird species with the most individuals translocated – over 800 were translocated following an oil spill off the coast of Tasmania. The major f ...
Introduced species
![](https://commons.wikimedia.org/wiki/Special:FilePath/Melilotus_alba_bgiu.jpg?width=300)
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.