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December 2012
... grass compared to winter. As a result, oribi are able to maintain a higher intake rate than in winter. Once my data collection is finished, I will be able to determine the nutrient levels of the collected grass samples which will allow me to determine the nutritional intake rate of oribi throughout ...
... grass compared to winter. As a result, oribi are able to maintain a higher intake rate than in winter. Once my data collection is finished, I will be able to determine the nutrient levels of the collected grass samples which will allow me to determine the nutritional intake rate of oribi throughout ...
Problem Definition - Information Technology
... terms. The “10% Rule” says that of all the imported organisms only 10% are actually introduced, and of those introduced only 10% become established, and only 10% of the established species become pests. In other words, most of the initial importations of species do not result in the creation of an i ...
... terms. The “10% Rule” says that of all the imported organisms only 10% are actually introduced, and of those introduced only 10% become established, and only 10% of the established species become pests. In other words, most of the initial importations of species do not result in the creation of an i ...
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 ...
Protection of terrestrial non-target plant species in the regulation of
... Plants provide the energy and form the basis of the food chain in any ecosystem. In agricultural landscapes birds and mammals depend on invertebrates that include herbivorous insects. This group of insects depends on often highly specific food plants and many different species are consuming various ...
... Plants provide the energy and form the basis of the food chain in any ecosystem. In agricultural landscapes birds and mammals depend on invertebrates that include herbivorous insects. This group of insects depends on often highly specific food plants and many different species are consuming various ...
Bats and insect pest control: a review
... pests. Insects considered as pests, often concentrate in large quantities in cultivated landscapes, have been found in the diet of several species of bats. To install artificial roosts (bat boxes) can be a real important way to protect bats and to be very useful to agriculture as well. In the Ebro D ...
... pests. Insects considered as pests, often concentrate in large quantities in cultivated landscapes, have been found in the diet of several species of bats. To install artificial roosts (bat boxes) can be a real important way to protect bats and to be very useful to agriculture as well. In the Ebro D ...
Models of Extinction
... of the Rhaetian stage at the end of the Triassic. In actual fact the late Triassic event killed only about half as many families as the end-Cretaceous. In order to minimize effects such as these, it has become common in studies of extinction to examine not only extinction rates (taxa becoming extinc ...
... of the Rhaetian stage at the end of the Triassic. In actual fact the late Triassic event killed only about half as many families as the end-Cretaceous. In order to minimize effects such as these, it has become common in studies of extinction to examine not only extinction rates (taxa becoming extinc ...
The Harm They Inflict When Values Conflict: Why Diversity Does not
... intervention would reduce diversity. There are processes in nature that involve suffering at least, and harm, death and misery, at most. The natural processes that affect animals in the wild are often of the latter kind. Most animals that live in the wild die of thirst and starvation. Natural disast ...
... intervention would reduce diversity. There are processes in nature that involve suffering at least, and harm, death and misery, at most. The natural processes that affect animals in the wild are often of the latter kind. Most animals that live in the wild die of thirst and starvation. Natural disast ...
Understanding Rangeland Biodiversity
... number of species of domestic stock and displace large herbivores, although not herbivorous insects. This will reduce the number of plant species through preferential grazing. Once farmers begin to convert the habitat to arable land they eliminate both animals (‘pests’) and numerous plants (‘weeds’) ...
... number of species of domestic stock and displace large herbivores, although not herbivorous insects. This will reduce the number of plant species through preferential grazing. Once farmers begin to convert the habitat to arable land they eliminate both animals (‘pests’) and numerous plants (‘weeds’) ...
Models of Extinction: A Review
... of the Rhaetian stage at the end of the Triassic. In actual fact the late Triassic event killed only about half as many families as the end-Cretaceous. In order to minimize effects such as these, it has become common in studies of extinction to examine not only extinction rates (taxa becoming extinc ...
... of the Rhaetian stage at the end of the Triassic. In actual fact the late Triassic event killed only about half as many families as the end-Cretaceous. In order to minimize effects such as these, it has become common in studies of extinction to examine not only extinction rates (taxa becoming extinc ...
An introduction to the herpetofauna of Antigua, Barbuda - Eco
... Beach-based tourism has stimulated the rapid growth of coastal developments, with resulting problems for native herpetofauna, especially turtles. Antigua’s accessibility and central position in the Lesser Antillean archipelago has also made it a popular hub for people and cargo moving into and out o ...
... Beach-based tourism has stimulated the rapid growth of coastal developments, with resulting problems for native herpetofauna, especially turtles. Antigua’s accessibility and central position in the Lesser Antillean archipelago has also made it a popular hub for people and cargo moving into and out o ...
Eradicating Invasive Fish Species, Parasites and Diseases:
... abundant biodiversity. Invasive Alien Species Purposeful and accidental movements of alien fishes by humans have been worldwide over the past two centuries. Intentional and authorized introductions often began as a means to establish food fishes, create new fisheries, restore depleted fish stocks, a ...
... abundant biodiversity. Invasive Alien Species Purposeful and accidental movements of alien fishes by humans have been worldwide over the past two centuries. Intentional and authorized introductions often began as a means to establish food fishes, create new fisheries, restore depleted fish stocks, a ...
The role of macrophytes in habitat structuring in aquatic
... habitat structuring by macrophytes on invertebrates and fish and possible causes, mediated by habitat complexity, that lead to changes in these animal assemblages; iv) potential impacts of non-native macrophyte species on habitat complexity and v) the importance of complexity provided by macrophytes ...
... habitat structuring by macrophytes on invertebrates and fish and possible causes, mediated by habitat complexity, that lead to changes in these animal assemblages; iv) potential impacts of non-native macrophyte species on habitat complexity and v) the importance of complexity provided by macrophytes ...
Harvestmen and Pseudoscorpions - Digital Commons @ Michigan
... These long-legged arachnids are variously known as daddy-long-legs, granddaddy-long-legs, and harvestmen (Figure 1). The name harvestmen most likely derives from their peak abundance around harvest time. They live on every continent but Antarctica. The adults are usually too big to live within the m ...
... These long-legged arachnids are variously known as daddy-long-legs, granddaddy-long-legs, and harvestmen (Figure 1). The name harvestmen most likely derives from their peak abundance around harvest time. They live on every continent but Antarctica. The adults are usually too big to live within the m ...
113 - UConn
... versus semilogarithmic function) of the species area curves differ at different latitudes, then scale dependence in the latitudinal gradient will be pervasive and difficult to control in comparative analyses. Thus, differences among studies in the form or parameterization of the latitudinal gradient ...
... versus semilogarithmic function) of the species area curves differ at different latitudes, then scale dependence in the latitudinal gradient will be pervasive and difficult to control in comparative analyses. Thus, differences among studies in the form or parameterization of the latitudinal gradient ...
African Carrion Ecosystems and Their Insect Communities in
... (Ullyett 1950). The decay processes affect the suite of animals that may be attracted. The functional roles that are played by the mammals and insects that are attracted to terrestrial carrion are dominated by fish and crustaceans in marine and freshwater carrion communities. The vertebrates and cru ...
... (Ullyett 1950). The decay processes affect the suite of animals that may be attracted. The functional roles that are played by the mammals and insects that are attracted to terrestrial carrion are dominated by fish and crustaceans in marine and freshwater carrion communities. The vertebrates and cru ...
Invasive species in the Pacific
... website: www.sprep.org.ws Produced by the South Pacific Regional Environment Programme with funding assistance from the Government of Australia Prepared for publishing by SPREP’s Publications Unit Editing and layout by Geoff Gregory, Word Therapy, Paraparaumu, New Zealand Typeset in 11/13.2 Times Ro ...
... website: www.sprep.org.ws Produced by the South Pacific Regional Environment Programme with funding assistance from the Government of Australia Prepared for publishing by SPREP’s Publications Unit Editing and layout by Geoff Gregory, Word Therapy, Paraparaumu, New Zealand Typeset in 11/13.2 Times Ro ...
Towards a framework for assessment and management of
... high-level predators seemed to be more vulnerable to trawling and other fishing techniques, respectively, because these components are specifically targeted by such activities. Large fish farms, through increased sedimentation, nutrient load, and light restriction, were believed to be a second major ...
... high-level predators seemed to be more vulnerable to trawling and other fishing techniques, respectively, because these components are specifically targeted by such activities. Large fish farms, through increased sedimentation, nutrient load, and light restriction, were believed to be a second major ...
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... Oregon Institute of Marine Biology, University of Oregon. I thank those people who facilitated my access to museum collections, including Gary Pettit, Jody Martin and George Davis at the Los Angeles County Museum of Natural History, and Ray Manning at the National Museum of Natural History. I thank ...
... Oregon Institute of Marine Biology, University of Oregon. I thank those people who facilitated my access to museum collections, including Gary Pettit, Jody Martin and George Davis at the Los Angeles County Museum of Natural History, and Ray Manning at the National Museum of Natural History. I thank ...
NOBANIS - Marine invasive species in Nordic waters
... Razor clams are famous for being able to burrow very fast and very deep into the sediment, making them difficult to capture live (Drew, 1907). The burrowing mechanism has been described in detail (Trueman, 1967). Their short siphons indicate that their usual position in the sediment is close to the ...
... Razor clams are famous for being able to burrow very fast and very deep into the sediment, making them difficult to capture live (Drew, 1907). The burrowing mechanism has been described in detail (Trueman, 1967). Their short siphons indicate that their usual position in the sediment is close to the ...
Arid Recovery Annual Report 2008
... period and will continue until all southern sections of the Reserve are replaced. Effective monitoring for feral and native animals inside the Reserve and weekly perimeter fence checks successfully detected these feral animals and enabled staff, students and volunteers to act quickly. Two of the thr ...
... period and will continue until all southern sections of the Reserve are replaced. Effective monitoring for feral and native animals inside the Reserve and weekly perimeter fence checks successfully detected these feral animals and enabled staff, students and volunteers to act quickly. Two of the thr ...
tive structures) or than characters whose pattern is impressed on
... individual characteristics of a genotype are changed by different environments is a measure of the plasticity of these characters. Plasticity is therefore shown by a genotype when its expression is able to be altered by environmental influences. The change that occurs can be termed the response. Si ...
... individual characteristics of a genotype are changed by different environments is a measure of the plasticity of these characters. Plasticity is therefore shown by a genotype when its expression is able to be altered by environmental influences. The change that occurs can be termed the response. Si ...
108790 No Species Text Q6 - Department of Environment, Water
... ecological communities with a sense of urgency. South Australia now has over 1000 known vascular plant and vertebrate animal threatened species. Our terrestrial, aquatic and marine ecosystems and landscapes, along with the ecological services and economic and social benefits they provide, are under ...
... ecological communities with a sense of urgency. South Australia now has over 1000 known vascular plant and vertebrate animal threatened species. Our terrestrial, aquatic and marine ecosystems and landscapes, along with the ecological services and economic and social benefits they provide, are under ...
Amphibians and Reptiles of the UK OTs, CDs and SBAs: Species
... also grouped according to their general location – this means that Bermuda, which is often termed a ‘wider Caribbean’ territory, is included in the Atlantic (although the Turks and Caicos Islands, also in the Atlantic, are included in the Caribbean because they have many herpetofaunal similarities t ...
... also grouped according to their general location – this means that Bermuda, which is often termed a ‘wider Caribbean’ territory, is included in the Atlantic (although the Turks and Caicos Islands, also in the Atlantic, are included in the Caribbean because they have many herpetofaunal similarities t ...
Functional traits, convergent evolution, and periodic tables of niches
... has contributed to a pessimistic view of general theories in ecology. Defining objective boundaries for ecological units of study is a universal challenge. For example, boundaries between different ecosystems, food web modules, populations and even species are often blurry or subjectively drawn. Thi ...
... has contributed to a pessimistic view of general theories in ecology. Defining objective boundaries for ecological units of study is a universal challenge. For example, boundaries between different ecosystems, food web modules, populations and even species are often blurry or subjectively drawn. Thi ...
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.