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 34 for “"old-growth forest"”.
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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
… the distribution of their biomass throughout the forest. Therefore, a better understanding of woodland salamander spatial population dynamics is needed to further understand their role in terrestrial ecosystems. The objectives of this study were to determine if natural environmental gradients …
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The Development Of Old-Growth Structural Characteristics In Second-Growth Forests Of The Cumberland Plateau, Kentucky, U.s.a.
… and intensive resource extraction, most forest on the Cumberland Plateau in Kentucky would have existed in a state meeting one or more of the definitions of old-growth forest in use today. However, many recovering, mature forests currently exist that might be redeveloping old-growth …
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THE IMPACT OF FOREST SUCCESSIONAL STATUS ON COMMUNITY STRUCTURE OF NEOTROPICAL CERAMBYCID BEETLES
<p>Due to anthropogenic activities, tropical rain forests face many challenges in sustaining biodiversity and maintaining global climates. This project examines how forest successional status affects community composition of saproxylic cerambycids, which, as early colonists of moribund trees, have …
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Bat Species Diversity in Old-Growth vs. Second Growth Forests in Lilley Cornett Woods, Letcher County, Kentucky
<p>Bat activity in old-growth forests (+150 years) is a subject that is poorly understood. The majority of old-growth forests are located in the northwestern portion of the United States, and with current silviculture practices, many forests are being cut. There have been no published studies that …
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The value of watchable wildlife: measuring the impacts of bear viewing in British Columbia
… to known biodiversity values and presence of old growth forest, with a discussion on the potential éommercial bear viewing has to preserve high value landscape. Mean values of bear viewing operations indicated they were worth the equivalent of 1290 Hectares of Old-growth forest when measured …
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Age, forest structure, and disturbance history of five potential old-growth forests in eastern Kentucky's Cumberland Plateau
… of global importance, yet its extent of old- growth forest (OG) is not well known. Due to its rarity and importance, understanding what OG remains is needed to deduce the region's health. This study described five potential OG forests in eastern Kentucky. Sites possessing >5 trees/ha …
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Relations between forest and prairie fragmentation and depredation of artificial nests in Missouri
… types (e.g., marshes (Brown and Dinsmore 1986), old-growth forest (Harris 1984), upland hardwood forest (Robbins 1979, Whitcomb et al. 1981, Ambuel and Temple 1983)); however, the pattern is not universal to all habitats (e.g., cypress ponds (O'Meara 1984)). Where species-area relationships seem …
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Prison Siting in Appalachia: Carceral Expansion, Neoliberalism, and Environmental Harm
… from the national economy, the ills of carceral growth are apparent throughout the region. This study examines the proposal to build a federal prison in Letcher County, KY. The purpose of this study is to gain further insight into the impact that the carceral state, including its promise of …
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The influence of silvicultural manipulations on plethodontid salamanders
… research has been conducted on how methods of forest management impact salamanders. In this research, I examine how experimental silviculture impacts plethodontid salamander relative abundance and count, and I compare three different body condition indices. Chapter 1 focuses on plethodontid …
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Forest Dynamics Of Two Multi-Aged Hemlock-Mixed Mesophytic Forests In The Northern Cumberland Plateau, Kentucky
… role within the Appalachian mixed mesophytic forest of the eastern United States. However, the non-native hemlock woolly adelgid (HWA; Adelges tsugae Annand), a novel invasive colonizer, is significantly altering the natural processes within T. canadensis ecosystems. Few studies have …
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Are Weevils Picky Eaters? Community Structure and Host Specificity of Neotropical Saproxylic Beetles (Coleoptera: Curculionidae)
… Primary saproxylic beetles play a major role in forest nutrient cycling and making deadwood accessible to other decomposers. Understanding beetle host preferences and patterns of community assembly is critical for their conservation, and for predicting which species might become invasive. This …
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Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas
… the natural resources at Kessler Mountain, forest composition, structure, and tree age were measured at two old growth forest parcels on Kessler Mountain. Forest understory and overstory were surveyed and increment cores were collected from select overstory trees. The overstory of the post …
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Applications of ecological modeling in managing Central Appalachian upland oak stands for old-growth characteristics
Old-growth forests provide important habitat for wildlife, support the maintenance of biodiversity and serve as control areas for scientific research. Expanding current old-growth stand area by utilizing neighboring younger, managed stands allows private landowners to meet management needs and …
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Habitat connectivity and spotted owl population dynamics
… dispersal process conducted using GIS data for old-growth forest throughout the Pacific Northwest. The nine indices of habitat pattern that I examined were only weakly correlated with the results from the dispersal modeling, but I identified a new pattern index, termed patch cohesion, for which …
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Regeneration Dynamics in Old -Growth and Second-Growth Southern Appalachian Cove Forests
Regeneration dynamics in an old-growth and a second-growth cove forest in the Great Smoky Mountains of eastern Tennessee were studied over the course of four contiguous growing seasons. Woody shrub and herbaceous species in the regeneration layer were also investigated. The effects of disturbance …
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Recovery and Resilience of Appalachian Herbs
The herbaceous layer of rich cove forests in the Southern Appalachians represent one of the highest biodiversity habitats in North America. These forests, however, have undergone large-scale logging disturbance that has altered 99% of the original forested landscape, leaving few old growth forests. …
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Interacting effects of soil nitrogen supply and light availability on understory sapling growth and foliar attributes
Light availability in forest understories is a well recognized constraint on sapling growth, but limitations in soil nitrogen (N) availability, and the link to foliar photosynthetic capacity, typically receive less consideration in describing stand dynamics. My primary hypothesis is that light and …
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Factors that influence ponderosa pine duff mound consumption
… to limit the deleterious effects of prolonged smoldering combustion. The objective of this study was to determine the conditions that influence duff consumption and analyze the variability of these factors in the field. Duff moisture content, mineral content, bulk density, composition and depth …
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