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 20 of 23 for “"species interaction"”.
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Ocean Acidification and Seasonal Temperatures Counter Positive Novel Species Interaction and Warming Effects on Tropicalising Temperate Fish Communities
… warming has facilitated the redistribution of species globally. Many tropical species have shifted their ranges poleward either to escape thermally unsuitable conditions or to invade previously inaccessible temperate environments. Climate-driven species redistributions have facilitated …
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Spatial point process modelling of a biodiverse plant community
… mechanisms that sustain biodiversity and allow species coexistence through an analysis of a biodiverse plant community in Western Australia.<br/><br/>Terrestrial plants are non-motile organisms and hence interact mainly with their nearest neighbours. Therefore, plant community dynamics need to …
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Climate, environment, and competition influenced human land preference in late pleistocene Australasia
… been used in the biological sciences to predict species distributions and dispersal patterns, but this method remains relatively new to paleoanthropological reconstructions of hominin niches. Hindcasted predictions of hominin niche space in Europe and Central Asia have shown that key variables …
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Development and road-testing of an inducible hypermutator strain of Pseudomonas aeruginosa
… examined how induced hypermutability affects the interaction of PA with Staphylococcus aureus (SA) during co-culture. Somewhat surprisingly, the hypermutator was less invasive than the WT in batch culture during both inter- and intra-species competitions. By contrast, the hypermutator demonstrated …
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Strong Interactive Species in Metacommunities: The Interaction Between Dispersal and Daphnia magna in Zooplankton Communities
… as, immigration and emigration. The potential interactions between local and regional factors make metacommunity dynamics a unique body of theory when compared to classic community theory. However, while the direct influence of dispersal on metacommunity dynamics continues to be a …
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Mathematical modeling of heavy metals diffusion and removal from cylindrical cement forms coated with bio-film
… describing the mass transfer of the targeted species as it moves through the encapsulating cylinder toward the surroundings. The nature of the species interaction at the surface of the cylinder renders an otherwise linear problem to be nonlinear. However, by applying a boundary perturbation …
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Analysis of phytochrome signaling pathways in Zea mays
… primarily transduce light signals via interaction with PIFs (phytochrome interacting factors), a sub-family of bHLH proteins. The recent whole genome duplication in maize may have led to divergence in the structure and function of phytochrome mediated signaling pathways. Here, I found …
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THE ECOLOGICAL IMPORTANCE AND EVOLUTIONARY POTENTIAL OF PHENOTYPIC PLASTICITY IN NOVEL ENVIRONMENTS
… without interacting with other organisms. Biotic interactions are important drivers of species distributions and trait evolution and new interactions are analogous to novel environments. Biotic interactions are predicted to influence plasticity evolution, but this has been challenging to test and …
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Modelling the krill-predator dynamics of the Antarctic ecosystem
… so as to determine whether predator-prey interactions alone can broadly explain observed population trends of the species considered in the model without any appeal to systematic effects possibly caused by environmental change. The history of human harvesting in the Antarctic is summarized …
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Impacts of shared pollinators and community composition on plant-pollinator interactions and their fitness consequences
The myriad ways species interact with each other have always captivated biologists. These interactions—predation, competition, parasitism, and mutualism—are fundamental to the stability of ecological communities and drive the evolution of species they contain. Some mutualistic systems consist of …
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Evaluating Surface Mechanisms for Catalytic Combustion Of H2 and CH4 on Pd Catalysts
… with thermodynamic reversibility and surface species interaction potentials captures the trends for conversion with respect to inlet temperature and water vapor. Intrinsic low dimensional manifolds (ILDM) were identified for the heterogeneous Pd-H2-O2 kinetics and the results show how specific …
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Macroscopic insights from mechanistic ecological network models in a data void
… studies, such as modeling only one type of species interaction at a time, lack of realistic network structure, or non-inclusion of community dynamics and environmental stochasticity. I introduce bioenergetic network models that bring together for the first time many of the fundamental …
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Comparison of polychlorinated biphenyl profiles in rat, fish and human tissues; the effects of consuming Great Lakes fish
… of individual congeners differed between the species, with whitefish containing tri- and tetrachlorobiphenyl congeners in the highest concentrations and lake trout and siscowet lake trout containing hexa- and heptachlorobiphenyls. Congeners 28, 47/48, 52, 66/95, 77/110, 118, 138, and 153 were …
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Interaction between the AAA+ protease CIpXP and the adaptor protein SspB
… In this thesis, I have investigated the interaction between the AAA+ protease CIpXP and the adaptor protein SspB. The highly conserved N-terminal domain of the unfoldase CIpX interacts with SspB and other specific adaptor proteins and substrates. However, these binding partners do not use …
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Responses of Madagascar's Endemic Carnivores to Fragmentation, Hunting, and Exotic Carnivores Across the Masoala-Makira Landscape
… respectively) than half of the endemic carnivore species across the landscape. Additionally, exotic carnivores had both direct and indirect negative effects on native carnivore occupancy. For example, spotted fanaloka (Fossa fossana) occupancy (0.70 ± SE 0.07) was negatively impacted by both …
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The effect and conservation implications of the re-establishment of a Cape fur seal Arctocephalus pusillus pusillus breeding colony at Vondeling Island, Saldanha Bay
… or mitigation thereof is not clear. Both species likely compete with their conspecifics from other colonies whose published movements suggest an overlap. Home ranges and core areas of Cape fur seals were expectably larger than those of African penguins; 158,486 km2 vs 40,495 km2 and 25,682 …
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A drinking water microbiome from source to tap: Community diversity, functionality, and microbial interaction
… level, nine draft genomes of pathogen-related species from the genera Legionella, Mycobacterium, Parachlamydia, and Leptospira were constructed and characterized in relation to their abundance, diversity, potential pathogenicity, genetic exchange, and distribution across the groundwater-sourced …
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Environmental Change Impacts on Marine Calcifiers: Spatial and Temporal Biomineralisation Patterns in Mytilid Bivalves
… factors mediating spatial and temporal species’ responses to habitat alterations underpins our ability to forecast impacts on marine ecosystems under any range of scenarios. This is especially important for calcifying species, many of which have both a high climate sensitivity and …
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Nutrient content and the effects of feeding four Namibian encroacher bush species on growth, methane production and carcass characteristics of Damara sheep
… and feeding value of four Namibian encroacher species on the intake, digestibility, growth performance and carcass characteristics of Damara sheep. In the first experiment, the nutritional quality of four encroacher bush species (Senegalia mellifera, Dichrostachys cinerea, Terminalia sericea …
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Host-Parasite Interactions Within Food Webs
… known to extend beyond the host to affect other species interactions. I used a series of approaches to gain a more integral understanding of host-parasite interactions by studying (1) the effects of parasites on biotic interactions that hosts engage in, (2) how biotic interactions such as …
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