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 11 of 11 for “"climatic stability"”.
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Climatic stability of polymer optical fibers (POF)
Optische Polymerfasern stellen ein relativ neues Medium zur Hochgeschwindigkeitsdatenübertragung mittels moduliertem Licht dar. Sie gestatten die Verbreitung großer Datenmengen über Entfernungen bis zu ca. 100 m, ohne eine Beeinflussung durch externe elektromagnetischen Feldern. Jedoch reagieren …
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Comparative Phylogeography of Glassfrogs (Vitreorama) Endemic to the Brazilian Altantic Rainforest
… analysis, and molecular data to test the role of climatic stability, rivers, mountain chains, and geographic distance in shaping genetic differentiation. Moreover, I test the affect of climatic stability on the maintenance and spatial distribution of diversity and test for signatures of …
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The importance of hydrologic refugia for the diversity of the Cape Flora
… correlates, where productivity, environmental stability explained TSR and WS, whereas environmental heterogeneity and environmental stability explained NREs and WD-NREs. Hydrological stability (such as groundwater-fed wetlands and seeps) and climatic stability (climatic stability index) have …
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Social structure, individual fitness and the effect of climate in an obligate cooperatively breeding bird, the white-winged chough (Corcorax melanorhamphos)
… droughts these birds enter a period of social instability with increased mortality, dispersal, alliance formation with unrelated individuals and higher aggression from other choughs. This thesis is the fifth study of white-winged choughs over a 60 year period, but the first conducted with genetic …
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Social structure, individual fitness and the effect of climate in an obligate cooperatively breeding bird, the white-winged chough (Corcorax melanorhamphos)
… droughts these birds enter a period of social instability with increased mortality, dispersal, alliance formation with unrelated individuals and higher aggression from other choughs. This thesis is the fifth study of white-winged choughs over a 60 year period, but the first conducted with genetic …
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The biotic effects of tertiary geoclimatic change in the southern hemisphere
I explore how pre-Quaternary geoclimatic phenomena and geographical heterogeneity influenced sub-continental speciation processes and contemporary biogeographic patterns across the Southern Hemisphere, with particular focus on two regions that have experienced elevated levels of ongoing …
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Quaternary geology of the German North Sea and Western Irish Sea Mud Belt: revised stratigraphies, geotechnical properties, sedimentology and anthropogenic impacts
The climatic development of the Mid to Late Quaternary (last 400,000 years) is characterised by fluctuation between glacial and interglacial periods leading to the present interglacial, the Holocene. In comparison to preceding periods it was believed the Holocene represented a time of relative …
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Looking into the Past: The Diversification of Amphibians in the Neotropical Savannas
… boundaries, and test hypotheses that implicate climatic (stable/unstable) and geomorphological events (plateau/valley) in the formation of this diversity. Results: The <em>C. albopuntata</em> species group is distributed in the Bolivian and Brazilian savannas and Chaco and it is comprised of at …
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Patterns and Disturbance-Induced Drivers of Plant Diversity and Endemism on High Elevation Islands
… threat to HEIs, especially to systems adapted to climatic stability (e.g. cloud or laurel forests) and alpine ecosystems. La Palma is a typical trade wind-dominated subtropical HEI hosting a variety of different environmental gradients, subsequent vegetation zones and a rich endemic flora. …
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Living with a changing climate: Holocene climate variability and socio-evolutionary trajectories, central Turkey
… The thesis aims to derive a record of past climatic and environmental changes from lake sediment cores and synthesise this with archaeological data in order to reconstruct human-climate interactions at the regional scale. Annually laminated sediment data collected from Nar Gölϋ crater-lake …
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Palaeoecology and population demographics of the extinct New Zealand moa (Aves: Dinornithiformes).
… took place at a time of relative climatic stability, and is thought to be due to over-hunting and habitat destruction. The aim of this thesis, using moa as a case study, is to conduct a detailed examination of a megafaunal palaeoecosystem prior to the introduction of humans. In …