![Long-term Effects of Shifts in Grazing Pressure on](http://s1.studyres.com/store/data/017522205_1-13d5e73b7164472c21acc532b29eeeec-300x300.png)
Long-term Effects of Shifts in Grazing Pressure on
... and important livestock in the agriculture in terms of utilization of uncultivated land for meat production. The northern boreal- and alpine zone is used as grazing area during summer (Austrheim et al., 2008b), and sheep are among the most influential herbivores in these ecosystems. Livestock grazin ...
... and important livestock in the agriculture in terms of utilization of uncultivated land for meat production. The northern boreal- and alpine zone is used as grazing area during summer (Austrheim et al., 2008b), and sheep are among the most influential herbivores in these ecosystems. Livestock grazin ...
Invasive species shifts ontogenetic resource partitioning and
... indirect effects can either partially mitigate or amplify predator impacts on population viability, they are of clear concern. This is especially true in instances where rare species are declining and additional negative impacts, such as reduced growth rates or declines in reproductive success, coul ...
... indirect effects can either partially mitigate or amplify predator impacts on population viability, they are of clear concern. This is especially true in instances where rare species are declining and additional negative impacts, such as reduced growth rates or declines in reproductive success, coul ...
MS Word - Invasive.Org
... establishment of sulfur cinquefoil. Potentilla recta is adapted to a wide range of environmental conditions and is able to establish in a variety of ecosystems. In eastern North America, P. recta is generally found along roadsides, rights-of-way, disturbed areas, and old fields, while in western Nor ...
... establishment of sulfur cinquefoil. Potentilla recta is adapted to a wide range of environmental conditions and is able to establish in a variety of ecosystems. In eastern North America, P. recta is generally found along roadsides, rights-of-way, disturbed areas, and old fields, while in western Nor ...
The Caiman Trade - AP Environmental Science
... Snails harbor the Schistosoma parasite, and some anecdotal evidence suggests that caiman predation on snails may help control schistosomiasis, a major tropical disease in humans and domestic animals. Despite the parental attention, the hatchlings often become a meal for many other species. Turtles, ...
... Snails harbor the Schistosoma parasite, and some anecdotal evidence suggests that caiman predation on snails may help control schistosomiasis, a major tropical disease in humans and domestic animals. Despite the parental attention, the hatchlings often become a meal for many other species. Turtles, ...
indirect facilitation: evidence and predictions from a riparian
... natural growing season for these species along the Eel. For M. cardinalis, I transplanted individuals into dense (n 5 13) and thinned (n 5 13) Carex with M. guttatus backgrounds, positioned in the center of the triangle formed by the M. guttatus. In addition, they were transplanted into dense (n 5 1 ...
... natural growing season for these species along the Eel. For M. cardinalis, I transplanted individuals into dense (n 5 13) and thinned (n 5 13) Carex with M. guttatus backgrounds, positioned in the center of the triangle formed by the M. guttatus. In addition, they were transplanted into dense (n 5 1 ...
A conceptual model for conservation planning
... refers to organisms whose populations use landscapes over distances and through times comparable to human management regimes and resource extraction activitiesÐhundreds to thousands of square kilometers and with population dynamics measured in years and decades. The population's use of the landscape ...
... refers to organisms whose populations use landscapes over distances and through times comparable to human management regimes and resource extraction activitiesÐhundreds to thousands of square kilometers and with population dynamics measured in years and decades. The population's use of the landscape ...
The macroecology of Southeast-Asian
... Two consequences of the `macroecological' research agenda have strong impacts an its methodologies and interpretations: 1) Large-scaled investigation can usually not be experimental because of the ecosystem-wide extent of most investigated patterns. In some cases it might be possible to use smaller- ...
... Two consequences of the `macroecological' research agenda have strong impacts an its methodologies and interpretations: 1) Large-scaled investigation can usually not be experimental because of the ecosystem-wide extent of most investigated patterns. In some cases it might be possible to use smaller- ...
spillover and species interactions across habitat edges between
... diversity while also increasing food production to meet the demands of a growing human population. Land-use change, primarily resulting from conversion to production land, is currently the leading cause of biodiversity loss. This occurs through habitat loss, fragmentation of remaining natural habita ...
... diversity while also increasing food production to meet the demands of a growing human population. Land-use change, primarily resulting from conversion to production land, is currently the leading cause of biodiversity loss. This occurs through habitat loss, fragmentation of remaining natural habita ...
Chromolaena odorata ungulate grazing on ant body size and communities in
... old resulting in substantial number of seeds (Witkowski 2000). Small, light seeds of 0.2 mg and 5 mm in length are produced (Henderson 2001). Seed germination is triggered by the presence of water and light, and occurs during the wet season (Muniappan & Bamba 2000). When unfavorable conditions preva ...
... old resulting in substantial number of seeds (Witkowski 2000). Small, light seeds of 0.2 mg and 5 mm in length are produced (Henderson 2001). Seed germination is triggered by the presence of water and light, and occurs during the wet season (Muniappan & Bamba 2000). When unfavorable conditions preva ...
Ecological Problems With Iowa`s Invasive and Introduced Fishes
... of native ecosystems), and this terminology in our paper is similar to terminology used in Executive Otder 13112, Invasive Species, by former President William J. Clinton on 3 February, 1999 (Clinton 1999), For ecologists, it is the rapid spread of the invasive exotics ...
... of native ecosystems), and this terminology in our paper is similar to terminology used in Executive Otder 13112, Invasive Species, by former President William J. Clinton on 3 February, 1999 (Clinton 1999), For ecologists, it is the rapid spread of the invasive exotics ...
Taxonomic and functional approaches of trophic interactions
... Quickdraws are your background, and you should know how and when to use it at the right time. Sometimes during the ascent, you will meet other climbers, arriving on routes next to you. These people are highly important, as they are able to completely change your point of view and give you cues to ov ...
... Quickdraws are your background, and you should know how and when to use it at the right time. Sometimes during the ascent, you will meet other climbers, arriving on routes next to you. These people are highly important, as they are able to completely change your point of view and give you cues to ov ...
Reducing Domestic and Feral Cat Predation
... decision‐ making, we work closely with our partners to develop innovative technical, educational, and capacity building resources. For more information about the Stewardship Centre, go to ...
... decision‐ making, we work closely with our partners to develop innovative technical, educational, and capacity building resources. For more information about the Stewardship Centre, go to ...
Investigating a Competitive Two Species System that Produces
... due to its own shortcomings implies a short succession cycle. The succession example above indicates the competition vs. colonization tradeoff (Tilman, 1990). This theory accounts for different dominant characteristics under different conditions, depending on their most limited resource (Tilman, 199 ...
... due to its own shortcomings implies a short succession cycle. The succession example above indicates the competition vs. colonization tradeoff (Tilman, 1990). This theory accounts for different dominant characteristics under different conditions, depending on their most limited resource (Tilman, 199 ...
draft - Lord Howe Island
... is more than just weed control or tree planting exercises. While weed control is of paramount importance, all weeds must been seen as part of a dynamic, interacting ecosystem. By exploiting the natural resilience of the native vegetation, weed species can be controlled in such a way that they are re ...
... is more than just weed control or tree planting exercises. While weed control is of paramount importance, all weeds must been seen as part of a dynamic, interacting ecosystem. By exploiting the natural resilience of the native vegetation, weed species can be controlled in such a way that they are re ...
setting conservation and research priorities for larger african
... various reasons, and demands for resources have become insatiable, the geographic range of most carnivores, large and small, is shrinking and populations are fragmented. The lion and cheetah have captured the imagination of tourists, so much so that to see these cats in their natural environment is ...
... various reasons, and demands for resources have become insatiable, the geographic range of most carnivores, large and small, is shrinking and populations are fragmented. The lion and cheetah have captured the imagination of tourists, so much so that to see these cats in their natural environment is ...
What is an edge species? The implications of sensitivity to habitat
... 1992, Villard 1998, Imbeau et al. 2003). Broader classifications for higher taxonomic groups or guilds have also become popular. For instance, carnivores, game, weedy plants and songbirds are often associated with higher densities at edges, while habitat specialists are generally thought to avoid edg ...
... 1992, Villard 1998, Imbeau et al. 2003). Broader classifications for higher taxonomic groups or guilds have also become popular. For instance, carnivores, game, weedy plants and songbirds are often associated with higher densities at edges, while habitat specialists are generally thought to avoid edg ...
University of Hawai`i at Mānoa - CITA-A
... conservation. Islands were crucial for the formulation of Charles Darwin’s and Alfred Russel Wallace’s evolutionary theory, and the dynamic theory of island biogeography developed by MacArthur and Wilson is by far the most widely cited and discussed theory in biogeography. Until recently only very f ...
... conservation. Islands were crucial for the formulation of Charles Darwin’s and Alfred Russel Wallace’s evolutionary theory, and the dynamic theory of island biogeography developed by MacArthur and Wilson is by far the most widely cited and discussed theory in biogeography. Until recently only very f ...
Integrated Pest Management IPM
... An injurious and noxious or troublesome living organism [that] does not include a virus, bacteria, fungus or internal parasite that exists on humans or animals (British Columbia Pesticide Control Act,1997) Includes insects, weeds, plant pathogens, birds, non-human mammals and other organisms which p ...
... An injurious and noxious or troublesome living organism [that] does not include a virus, bacteria, fungus or internal parasite that exists on humans or animals (British Columbia Pesticide Control Act,1997) Includes insects, weeds, plant pathogens, birds, non-human mammals and other organisms which p ...
- Wiley Online Library
... energetic data to make them comparable, but we have not attempted to do so. We have chosen to use volumetric data on contents of the digestive tract for quantitative estimates of plant consumption because such data are much more widely available than mass or ...
... energetic data to make them comparable, but we have not attempted to do so. We have chosen to use volumetric data on contents of the digestive tract for quantitative estimates of plant consumption because such data are much more widely available than mass or ...
Species coexistence and the superior ability of an invasive species
... Turnbull et al., 2013; Wright, 2002). Species introductions provide an opportunity to examine the interactions that determine the ability of species to establish, persist, and coexist alongside other species (Sax, Stachowicz & Gaines, 2005). Recent theoretical developments predict that facilitation ...
... Turnbull et al., 2013; Wright, 2002). Species introductions provide an opportunity to examine the interactions that determine the ability of species to establish, persist, and coexist alongside other species (Sax, Stachowicz & Gaines, 2005). Recent theoretical developments predict that facilitation ...
Ecology and conservation biology of ground beetles - REAL-d
... beetles" replied Haldane with aplomb (Evans & Bellamy 1996). The basis of Haldane's statement is that the order of beetles, Coleoptera is the most species-rich on Earth. Within beetles, one can argue, the ground beetles, Carabidae must be one of His favourites, because among beetles, this family is ...
... beetles" replied Haldane with aplomb (Evans & Bellamy 1996). The basis of Haldane's statement is that the order of beetles, Coleoptera is the most species-rich on Earth. Within beetles, one can argue, the ground beetles, Carabidae must be one of His favourites, because among beetles, this family is ...
QUESTION: Review
... • Invasive species = non-native (exotic) organisms that spread widely and become dominant in a community - Growth-limiting factors (predators, disease, etc.) are removed or absent - They have major ecological effects - Chestnut blight, from Asia, wiped out American chestnut trees • Some species help ...
... • Invasive species = non-native (exotic) organisms that spread widely and become dominant in a community - Growth-limiting factors (predators, disease, etc.) are removed or absent - They have major ecological effects - Chestnut blight, from Asia, wiped out American chestnut trees • Some species help ...
APES Unit #3- Presentation
... • Invasive species = non-native (exotic) organisms that spread widely and become dominant in a community - Growth-limiting factors (predators, disease, etc.) are removed or absent - They have major ecological effects - Chestnut blight, from Asia, wiped out American chestnut trees • Some species help ...
... • Invasive species = non-native (exotic) organisms that spread widely and become dominant in a community - Growth-limiting factors (predators, disease, etc.) are removed or absent - They have major ecological effects - Chestnut blight, from Asia, wiped out American chestnut trees • Some species help ...
the role of microbial endosymbionts in sorghum halepense
... Invasive plants can profoundly alter ecosystem processes, and tremendous economic costs are often associated with these disturbances. Attributes like higher growth rates, increased biomass, and enhanced chemical defenses have been documented in many invasive plants. When expanding into new ranges, t ...
... Invasive plants can profoundly alter ecosystem processes, and tremendous economic costs are often associated with these disturbances. Attributes like higher growth rates, increased biomass, and enhanced chemical defenses have been documented in many invasive plants. When expanding into new ranges, t ...
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.