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 84 for “"climatic change"”.
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Agro-Climatic Change, Crop Production and Mitigation Strategies-Case Studies in Arkansas, USA and Kenya
<p>Although climate change impacts vary geographically and temporally, studies at local levels are not readily available for stakeholders to better understand how their local communities would be affected and what remedial measures could be more effective in their local contexts. This dissertation …
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Understanding Forest Landscape Response to Global Climatic Change: An Uncertainty Evaluation Based on Spatial Modeling
… would be substantially affected by future global climatic changes in temperature, CO2, precipitation and radiation. Climatic changes may affect tree species physiology, abundance, distribution; forest community characteristics (e.g., species richness and diversity); forest landscape composition …
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Carbon dioxide induced ocean climatic change and tracer experiment with an atmosphere-ocean general circulation model
The principal objective of this study is to determine whether or not the penetration of a passive tracer is analogous to the penetration of a greenhouse-gas-induced heating.
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Late Holocene earthflows of the Willard Playa/dune complex, Estancia Valley, New Mexico; a geomorphic response to climatic change
… scars are believed to represent a mesic climatic fluctuation within the late Holocene of the Estancia Valley.
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Worldwide spatial distribution of Tuta absoluta (Lepidoptera: Gelechiidae) and its natural enemies under current and future climatic change conditions through modelling
… of T. absoluta and the effect of climate change on it and four of its natural enemies (Neochrysocharis formosa, Stenomesius japonicus, Pseudapanteles dignus, and Macrolophus pygmaeus). We modelled the areas under risk and the effect of climate change on the pest and its natural enemies …
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Climatic change, habitat modification and relative age of dung beetle taxa (Coleoptera: Scarabaeidae, Hydrophilidae, Histeridae, Staphylinidae) in the South-Western Cape
… the Transvaal were located in a summer rainfall climatic area, type 113d (Walter & Lieth 1964), on deep and in both open woodland and grassland. 2. Eleven study sites in the south-western Cape were distributed between two winter rainfall climatic areas, type IV in the Cape of Good Hope Peninsula …
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Late Holocene Climatic Change: The little ice age and El Nino from planktonic foraminifera in sediments off walvis bay, South West Africa
… accurately all the down-core foraminiferal changes, we had to develop a chemical solution which dissolves diatoms and organic material without damaging the foraminiferal skeletons. It consists of K2CO3, CaCl2, NaOH and H202 in particular concentrations. By using this technique, it is …
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Potential Effects of Climate Change on the Distribution and Migration of European Breeding Migratory Birds
… aims to investigate the potential impacts of climatic change on Afro-Palaearctic migratory birds by investigating simulated changes in breeding and non-breeding distribution. Methods: Generalised Additive Models were used to determine those climatic variables that produced the most robust …
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A historical perspective on recent landscape transformation: integrating palaeoecological, documentary and contemporary evidence for former vegetation patterns and dynamics in the Fleurieu Peninsula, South Australia / Sophia Anastasia Bickford.
… a multi-scaled history of vegetation pattern and change in the Fleurieu Peninsula, South Australia over the last c. 8000 years. Aims to better understand post-European landscape transformation and address the inherently historical components of the problems of regional biodiversity loss, land …
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The Mongolian Remodeling and the structure of Anoplocephalid cestode diversity
… and their parasites. At the end of the Eocene, climatic change across Asia resulted in a faunal turnover (the Mongolian Remodeling) as rodents diversified and larger mammals declined. Throughout the Oligocene, the landscape in Asia was characterized by episodic climatic and landscape changes …
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Akrotiri Aetokremnos and the Cypriot Pygmy Hippopotamus: An Interdisciplinary Look at a Late Pleistocene Large Mammal Extinction
… factors constantly discussed--human hunting and climatic change. The Cypriot pygmy hippopotamus represents a case study of one such extinction event. The last appearance of this species is at the archaeological site Akrotiri Aetokremnos (~12,000 cal. B.P.), the oldest well-dated site on Cyprus. …
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The past and future climatic suitability of arabica coffee (Coffea arabica L.) in East Africa.
… of plant and animal species have shown that climatic changes affect species distributions. Global circulation models suggest climatic change over the next century, and predict warmer temperatures, and increasingly variable precipitation in East Africa. Whilst several studies have modelled the …
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The biostratigraphy, palaeoecology and geochemistry of a long lacustrine sequence from NW Greece
… Ioannina in NW Greece has attempted to relate changes in the lake to variations in the regional climate of south-central Europe over the last 600,000 years. The site is known to have been extremely sensitive to past climatic change for three reasons: (i) temperate vegetation persisted …
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Late Cainozoic rainforest vertebrates from Australopapua: evolution, biogeography and extinction
… responses of those groups to past environmental change. In light of predicted climatic change and anthropogenic impact, it is imperative to determine the trajectories of Australia‟s modern flora and fauna. In particular, mesothermic rainforest faunas are among Australia‟s most vulnerable …
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Reconstructing the late pleistocene palaeoenvironment of the Richtersveld using fossil charcoal
… Richtersveld, may have responded to Pleistocene changes. Recent excavations at Spitzkloof Rockshelter A in the Richtersveld have provided a rare source of palaeoenvironmental data in the form of fossil wood charcoal assemblages that span a sequence from the last glacial maximum (LGM) to ~14 500 …
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A Glyptosaurine Lizard from the Eocene (late Uintan) of San Diego, California, and Implications for Glyptosaurine Evolution and Biogeography
… California at a time of widespread tectonic and climatic change and increasing regional endemism in mammalian faunas, when also considering the results other studies of Eocene lizards, indicates a pattern of evolution for lizards of the time that is quite different from the dramatic turnovers and …
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Determining land use change and desertification in China using remote sensing data
… or semiarid areas due to human influence or to climatic change, affects most arable land in arid and semi-arid China. This project provides an analysis of desertification in northeastern arid and semi-arid China to determine its spatial distribution, severity, and causes. It locates areas of …
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Phylogenetic Niche Modeling
… a common goal when studying species response to climatic change. Species distribution models (SDMs) are commonly used to estimate a species' niche from observed patterns of occurrence and environmental predictors. However, a species niche is also shaped by non-environmental factors--including …
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