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 12 of 12 for “"thermal tolerances"”.
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Thermal Tolerances of an Endemic Hot Spring Snail Physella wrighti Te and Clarke (Mollusca: Physidae)
Physella wrighti (Te and Clarke, 1985) is an Endangered freshwater snail endemic to the Liard Hot Springs in northern British Columbia. It inhabits water temperatures from 23.5oC to 36oC and is active year-round. Despite its conservation status, little else is known about this species. To advance …
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Stream invertebrates and water temperature : evaluating thermal tolerances in the Cape floristic region (South Africa) - implications of climate change
… and water temperatures in streams and rivers. Thermally sensitive species are threatened by increases in water temperature, but currently very little information exists on the thermal tolerances of aquatic invertebrates in South Africa. In order to rectify this problem baseline data on thermal …
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Investigating the Life History, Demography, and Thermal Tolerances of Rare and Endangered Freshwater Mussels (Bivalvia: Unionidae) in the Upper Tennessee River Basin
… key aspects of its life-history, biology, and thermal tolerances still unknown. In this study, I document mussel burrowing behavior, estimate population age structure, establish a thermal regime and tolerances, and estimate population density of L. holstonia in Tennessee and Virginia. Results …
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The thermal tolerances and preferences of native fishes in the Cape Floristic Region: towards understanding the effect of climate change on native fish species
… behaviour, and life-histories of aquatic biota. Thermal alteration may therefore affect sensitive fish species. The upper thermal limit, determined via the critical thermal method, has been validated as a measure of thermal sensitivity. To better understand the impacts of climate change on the …
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There’s more than one way to beat the heat: What anal probes reveal about thermal responses in Neotropical beetles (Coleoptera: Cerambycidae).
… to conditions that bring them close to their thermal maxima. Tropical microhabitats are linked to vertical stratification, because the canopy is hotter, winder, and less humid than the ground. In ectothermic organisms, such as beetles, thermoregulation is dependent on morphological and …
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Effects of Hyperoxia on Thermal Tolerance and Indicators of Hypoxic Stress in Antarctic Fishes That Differ in Expression of Oxygen-Binding Proteins
… have shown that icefishes have lower critical thermal maxima (CT<sub>MAX</sub>) than red-blooded notothenioids and that there is a positive correlation between CT<sub>MAX</sub> and hematocrit, indicating that oxygen-carrying capacity may contribute to thermal tolerance. I tested the hypothesis …
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Enhancing Vallisneria americana restoration using knowledge of genotypic and phenotypic diversity
… change, so long as temperatures do not exceed thermal tolerances. Climate change mitigation strategies that involve transplanting individuals may also be successful. To investigate consequences of restoration strategies that translocate individuals, I evaluated seed production and germination …
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Aspects of ecology and algal physiology in Hawaii's rocky intertidal zones
… addition, I use infrared thermography to examine thermal ecology on a tidally driven shore. I found that temperature varies over fine-spatial scales and changes rapidly with tides and waves and organisms either 1) associate with cooler habitats 2) tolerate hotter surroundings or 3) have …
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Climate Change and Biogeography In the Marine Intertidal
… Thus, with warming climatic conditions, thermal tolerances at the equatorward range edge should be exceeded, causing poleward biogeographic contractions. The marine intertidal zone is a physically rigorous habitat that may serve as a model system for the effects of climate on …
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Tales of an 'invisible' life stage : survival and physiology among terrestrial juvenile Ambystomatid salamanders
… with surviving salamanders revealed that thermal tolerances and SMR demonstrated plastic responses to warming. Further, a simulation of juvenile survival following high temperatures suggested that the two study species may demonstrate diverging juvenile survival rates after being thermally …
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Belowground impacts of regenerative agriculture in a South African seed production system
… of collembolans that display remarkably high thermal tolerances and desiccation resistance, within such an arid agroecosystem. Secondly, decomposition rate (k), remaining litter mass (g), carbon to nutrient ratios and soil mesofauna community compositions were compared between agricultural …
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Effects of environmental warming on lentic freshwater communities and the behavioral and physiological responses by fishes to warming
… body sizes and rapid growth. Species-specific thermal tolerances may further affect how organisms utilize habitats with lakes. Behaviors such as foraging, thermoregulation, and predator avoidance allow individuals to balance ecological conditions and physiological constraints with energetic …