Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"habitat modelling"”.
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Habitat modelling and the ecology of the marsh tit (Poecile palustris).
… inter-specific competition, and deteriorating habitat quality. Despite recent work investigating some of these elements, knowledge of the Marsh Tit’s behaviour, landscape ecology and habitat selection remains incomplete, limiting the understanding of the species’ decline. This thesis provides …
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Modelling the current and potential distribution of woody plants, with special emphasis on the importance of spatial scale and environmental factors
… and legislation. Using predictive geographical modelling, this thesis assesses the role of spatial scale in understanding the determinants of species distribution, modelling invasion spread, and taking conservation decisions. The species distribution databases were collated in a Geographic …
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Insects in urban brownfields: analyses of species occurrences, community composition, and trait frequencies along a successional gradient
… are home to a variety of species. Brownfield habitats show high spatio-temporal dynamics, forcing species constantly track suitable habitat. The thesis provides insight into the mechanisms of leafhopper and grasshopper species survival in brownfield habitats. Within a habitat modelling …
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Development and validation of spatial distribution models of marine habitats, in support of the ecological valuation of the seabed
… organisms related to it (together called a ‘habitat’). Therefore, ‘habitat mapping’ is crucial, not only for the assessment of the ecological value at a certain moment, but also to follow its evolution over time. Because of the world-wide application of marine habitat mapping, there is …
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Predicting risks from acoustic deterrents
… beyond the source and aquaculture cages. Modelling showed that both harbour porpoises<br/>and harbour seals would be repeatedly exposed to ADD noise, with predicted noise levels in<br/>some instances exceeding thresholds which could result in either a temporary or permanent<br/>hearing …
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The reintroduction of bearded vultures in South Africa: a feasibility analysis
… outcomes of different release strategies. Habitat modelling and GIS techniques were used to identify potential reintroduction sites, most notably based on the presence of cliffs. Potential reintroduction sites were then compared based on a range of habitat attributes, of which the amount of …
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Distribution, density, and habitat associations of the narrowly endemic coldwater crayfish (faxonius eupunctus) in the Eleven Point River drainage, Arkansas and Missouri, U.S.
… of the distribution, population densities, and habitat associations of rare and narrowly distributed crayfishes is therefore warranted to most effectively protect and manage these species. The purpose of this research was to assess the distribution and local population densities of the narrowly …
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Drivers of variation in the migration and foraging strategies of pelagic seabirds
… explore the drivers of variation in movements, habitat use and foraging behaviour, and the implications for life history and conservation. In Chapter 1, I provide an overview of the key topics of this thesis. In Chapter 2, I provide quantitative recommendations of minimum sample sizes needed to …
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Managing the carnivore comeback: assessing the adaptive capacity of the Eurasian lynx (Lynx lynx) to cohabit with humans in shared landscapes
… because of human population growth and habitat fragmentation they are inexorably and increasingly faced with the need to live in human-modified landscapes. As a direct consequence, conflicts over depredation on livestock, competition for game species and sometimes over human injury or …