Search for dissertations about: "Functional extinctions"
Found 5 swedish dissertations containing the words Functional extinctions.
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1. Functional Extinctions of Species in Ecological Networks
Abstract : Current rates of extinctions are estimated to be around 1000 times higher than background rates that would occur without anthropogenic impacts. These extinction rates refer to the traditional view of extinctions, i.e. numerical extinctions. READ MORE
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2. The response of model food webs to species loss : secondary extinctions and relaxation times
Abstract : Current destruction and fragmentation of natural habitats is predicted to cause great future losses in biodiversity (Pimm et al. 1995; Hughes et al. 1997; Sala et al. 2000). READ MORE
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3. Food Webs, Models and Species Extinctions in a Stochastic Environment
Abstract : In light of the current global mass extinction of species, ecologists are facing great challenges. In order to reverse the path towards additional extinctions early warning systems to guide management actions need to be developed. READ MORE
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4. Biodiversity and Species Extinctions in Model Food Webs
Abstract : Many of the earth’s ecosystems are experiencing large species losses due to human impacts such as habitat destruction and fragmentation, climate change, species invasions, pollution, and overfishing. Due to the complex interactions between species in food webs the extinction of one species could lead to a cascade of further extinctions and hence cause dramatic changes in species composition and ecosystem processes. READ MORE
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5. Quantifying Risk in Epidemiological and Ecological Contexts
Abstract : The rates of globalization and growth of the human population puts ever increasing pressure on the agricultural sector to intensify and grow more complex, and with this intensification comes an increased risk of outbreaks of infectious livestock diseases. At the same time, and for the same reasons, the detrimental effect that humans have on other species with which we share the environment has never been more apparent, as the current rates of species loss from ecological communities rival those of ancient mass extinction events. READ MORE