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 10 of 10 for “"canopy disturbance"”.
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Stand dynamics and disturbance history of five oak -dominated old -growth stands in the unglaciated Appalachian Plateau
Stand dynamics and disturbance histories of five eastern, oak-dominated old-growth stands were investigated using ecological field sampling techniques, dendrochronologogical methods, and a review of historical resources of original forest composition and patterns of human and natural disturbance. …
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Effects of hurricanes and fires on southeastern savanna-forest landscapes
Sequential large-scale disturbances may produce interacting effects that differ from those predicted for each disturbance in isolation. These non-additive effects can strongly influence the composition and structure of plant communities. Hurricanes and natural lightning-season fires are …
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The effects of intermediate-scale wind disturbance on forest composition, structure, and succession with implications for management
Forest disturbances are discrete events in space and time that disrupt the biophysical environment and impart lasting legacies on forest composition, structure, and stand development. Intermediate-scale disturbances may promote stand heterogeneity, including uneven-aged structure, and their effects …
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Morphological differentiation of eggs and comparative efficacy of oviposition and gravid traps for Aedes vectors at different habitats
… same 2ha habitats with varying degrees of forest canopy disturbance. Ae. triseriatus was the most abundant mosquito on all sites. Ovitraps and gravid traps were efficient in collecting Ae. triseriatus, while ovitraps were not efficient in collecting Ae. japonicus and Ae. albopictus.
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Sapling growth and recruitment as affected by flooding and canopy gap formation in a river floodplain forest in southeast Texas
… data collected since 1980 to investigate how canopy disturbance interacts with chronic understory disturbance to determine regeneration patterns. I reconstructed flooding history using a combination of river gauging, a local water-level recorder, and contour maps. 1979 was an extreme flood …
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Natural Environmental Gradients Predict The Microhabitat Use, Fine-Scale Distribution, And Abundance Of Three Woodland Salamanders In An Old-Growth Forest
… association with increased solar exposure from canopy disturbance and landscape convexity. Plethodon glutinosus displayed a dramatic tolerance to thermal environments by preferentially occupying warm microhabitats and relying only minimally upon subterranean refugia for thermo‐osmoregulation …
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Forest disturbance, mosquito vector ecology and La Crosse virus dynamics in southwestern Virginia
The influence of forest canopy disturbance (FCD) on La Crosse virus (LACV), leading cause of US pediatric arboviral encephalitis, is critical to understand in landscapes where forests are periodically harvested. Southwestern Virginia is part of an emerging focus of this interior forest bunyavirus. …
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Spatial distribution of canopy gaps in a tropical forest landscape and its influence on the tree community
… still rather limited. In particular, the role of disturbance in determining compositional variation in forests remains poorly understood (Molino and Sabatier, 2001). This gap in understanding in large part reflects the lack of appropriate tools that allow measurement of disturbance patterns at …
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Diversity, Invasibility, and Stability of Appalachian Forests across an Experimental Disturbance Gradient
… communities in Appalachian forests responded to disturbances caused by forest management activities. I had two primary objectives including (1) testing theories of biological diversity and invasions by nonnative species; and (2) providing empirical data that will help guide the sustainable use of …
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Predicting invadedness of forested protected areas in relation to natural and anthropogenic disturbances
… and function. Natural and anthropogenic disturbances create conditions that may favor establishment and spread of invasive plants. In order to manage invasive plants and mitigate their effects on forested protected areas, it is important to be able to predict how disturbances affect …