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.
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Showing 1 to 9 of 9 for “"Species Migration"”.
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Topography, disturbance and climate: subalpine forest change 1972-2013, Rocky Mountain National Park, USA
Many forest tree species are expected to migrate in order to track suitable habitat due to changing climate (Stohlgren et al. 2000, Holzinger et al. 2007, Bell et al. 2013). Changes in climate will likely alter important fine-scale ecological factors such as water balance or microsite conditions …
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Potential past and future tree migration responses to climate change
… Climate is a well-known key constraint of species and ecosystem functions affecting distributions, extinction risk, altered disturbance regimes, biogeochemical cycling, and other ecological responses. Specifically, the ecological responses of forest and woodland vegetation to climate change …
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Patterns of primary moult in the Weavers, Ploceidae
… fitted in with breeding activities, and in some species, migration. Ringers in southern Africa have been submitting primary moult data to SAFRING, the South African Bird Ringing Unit, since 1998, providing a large amount of data that the author has been curating and checking on an on-going basis …
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The Amenity Value of Trees: a Meta-analysis of Hedonic, Property-value Studies
Tree species migration as a result of climate change may alter the composition of trees in local communities. Shifts in tree diversity, stand age, species predominance and the overall number of trees are potential changes. Community tree programs may also change the characteristics of local trees …
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Aqueous & Non-Aqueous Phase Tracer Migration Through Differing Soil Textures
… in order to promote the understanding of NAPL migration through b-horizon soils and retarding effects upon non aqueous species migration. Soil structure and texture was also studied using conservative (Bromide) and non-conservative (Phosphate) tracers. Experimental data was produced using a …
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Electron Microscopy Studies of Hybrid Perovskite Solar Cells
… leading to the direct observation of elemental species migration within the device, reported here for the first time with nanometric spatial resolution. Further analyses, involving a set of experiments aimed to study the effects of air exposure and light soaking on the cells, were designed and …
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Predictive Modeling of Diffusional Processes Within the Hydrated Layer of Vitrified Nuclear Waste Forms
… of those gel layers. These mechanisms include: migration due to electrochemical potential gradients; structural alteration reactions resulting in the formation of a transition zone, a structurally unique region between the gel layer and bulk glass; alteration product formation through …
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Aspects of the hemes and modulation of hydrogen donors in catalases from bovine liver, yeast, and escherichia coli
… via the formation of protein radical species. Migration of this radical to a position close to the NADPH is also proposed as an adjunct hypothesis, based on similar electron migrations that are known to occur within metmyoglobin and cytochrome c peroxidase when reacted with H202. …
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Process oriented infrastructure for climate-driven forest migration through cities
… to shift the geographical distribution of tree species worldwide. Increasing empirical evidence has emerged showing that many tree species are already moving toward higher latitudes to track suitable climatic conditions. Yet, such movement cannot guarantee their survival, especially if the …