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 55 for “"Bottomland"”.
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Evaluating Satellite Image Classification For Bottomland Surveys in Ozark National Scenic Riverways
The National Park Service has used aerial photographs in a preliminary survey of landcover in Ozark National Scenic Riverways. This thesis evaluated the feasibility of using satellite images in further surveys of the park. Aerial photographs were digitized to allow computerized comparison with …
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Herbaceous and woody plant establishment across hydrologic gradients in bottomland reforestation sites
Flooding is an important determinant of plant establishment, as well as planted tree survival and growth, in restored floodplain forests. Thus, community assembly in a restored floodplain and, ultimately, restoration outcomes are likely constrained by the site’s hydrologic regime, along with other …
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Habitat Relationships of Breeding Birds in Bottomland Hardwood Forests of the Altamaha River, Georgia
Bottomland hardwood forests (bottomlands) dominate most of the river floodplains and lowlands of the southeastern United States. These vanishing and often degraded forests provide habitat for at least seventy species of breeding birds. However, little is known about habitat associations of breeding …
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ECOLOGY OF THE SWAMP RABBIT AND EASTERN COTTONTAIL IN BOTTOMLAND HARDWOOD FORESTS IN SOUTHERN ILLINOIS
… Habitat loss and fragmentation, particularly of bottomland hardwood (BLH) forest, have left swamp rabbit populations patchily distributed along major rivers in the southern portion of the state. In addition, the decline of early-successional upland habitats due to changes in farming techniques …
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Evaluating Tree Seedling Survival and Growth in a Bottomland Old-field Site: Implications for Ecological Restoration
In order to assess the enhancement of seedling survival and growth during drought conditions, five-hundred bare-root seedlings each of Shumard oak (Quercus shumardii Buckl.) and green ash (Fraxinus pennsylvanica Marsh.) were planted each with four soil amendments at a Wildlife Management Area in …
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Chinese Tallow Long-Term Impact on Stand Dynamics in a Bottomland Hardwood Forest Following Vegetation Management
… invasive tree known to have negative impacts on bottomland hardwood forests. Chinese tallow is proficient in reproducing and surviving in bottomland hardwood forests because it is more flood and shade tolerant than most native trees. The long-term effectiveness of Chinese tallow control is an …
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NATURAL REGENERATION DYNAMICS AND SURVIVAL INFLUENCED BY ABIOTIC AND BIOTIC FACTORS IN A BOTTOMLAND HARDWOOD FOREST
… biodiversity support, and aesthetic value. Bottomland hardwood forests, however, are threatened by invasive species, land loss/conversion, inconsistent or absence of harvesting disturbances, and altered hydrological patterns, leading to reduced success of desired, native species. This …
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Quantifying bottomland hardwood forest and agricultural grassland evapotranspiration in floodplain reaches of a mid Missouri stream
Bottomland hardwood forests (BHF) play an important role in floodplain dynamics, particularly along urban streams where flood mitigation is critical to protecting human life and property. Enhanced evapotranspiration (ET) of riparian floodplain forests could help reduce flooding through drying of …
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AVIAN COMMUNITIES MONITORED ALONG A SUCCESSIONAL CHRONOSEQUENCE IN BOTTOMLAND HARDWOOD FORESTS IN THE LOWER MISSISSIPPI ALLUVIAL VALLEY
<p>Bottomland hardwood forests in the Lower Mississippi Alluvial Valley have been extensively reduced due to agriculture conversion and altered hydrology. Remnant forests have undergone further degradation from sources such as a lack of forest management, invasive species, and reduced regeneration …
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CHALLENGES TO ESTABLISHING OAKS AND PECAN IN BOTTOMLAND FORESTS IN THE POST OAK SAVANNAH AND BLACKLAND PRAIRIE
<p>Removal and degradation of bottomland hardwood forests (BLHW) in the southern United States has been extensive over the past 200 years. Large mast-production is crucial to the survival of some high-priority wildlife. A two-year study monitored survival and growth of planted seedlings receiving …
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Population Ecology and Foraging Behavior of Breeding Birds in Bottomland Hardwood Forests of the Lower Roanoke River
… I studied nest survival of breeding birds in bottomland hardwood forests of the lower Roanoke River, North Carolina. Nesting success was monitored in two forest width classes: narrow bands of levee forest that were dominated by two edge types, and wide, continuous levee forest stands that have …
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An examination of the riparian bottomland forest in north central Texas through ecology, history, field study, and computer simulation
… explores the characterization of a riparian bottomland forest in north central Texas in two ways: field study, and computer simulation with the model ZELIG. First, context is provided in Chapter One with a brief description of a southern bottomland forest, the ecological services it provides, …
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The Regeneration Niche in Bottomland Hardwood Forests: Tree and Herbaceous Communities Along Interacting Gradients of Flood and Light in East Texas Floodplains
… document characterizes environmental niches of bottomland hardwood (BLH) plant species, focusing on how gradients in light availability and flooding shape understory composition and exploring a potential trade-off between shade and flood tolerance. Field surveys demonstrated that small canopy …
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Estimating above and below ground vegetation biomass and carbon storage across an intra-urban land-use gradient in mid-Missouri
… biomass and carbon storage. Trees within the bottomland hardwood forest were shown to be significantly larger in DBH and canopy height than all other sites. Total estimated carbon storage was also largest within a bottomland hardwood forest (38,990.2kg) and smallest within a bottomland …
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Mapping Ancient Baldcypress Forests for Conservation at Black River, North Carolina
<p>A few ancient baldcypress-bottomland hardwood forests survive across the southeastern United States in a mosaic of remnant old-growth stands left untouched by extensive logging during the early 20th century. Uncut stands in the Southeast that survived centuries of disturbance following European …
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Bedding as a Factor in the Survival and Total Height of Two Year Old Planted Loblolly Pine Seedlings in East Texas
… pine (Pinus taeda, L.) seedlings planted on bottomland and upland sites. Forty row (or lineal) plots 100 feet long were established on machine planted areas on bedded and unbedded, bottomland and upland sites. Plot distribution was ten plots on sheared, raked and bedded on both bottomland and …
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Seasonal and site relationships to acetylene reduction by actinorhizal black alder and Russian olive root nodules
… Russian olive (Elaeagnus angustifolia L.) on a bottomland Mollisol increased exponentially with soil temperature. Soil moisture content, pH and nitrogen concentration and leaf nitrogen concentration were not correlated with ARA. Soil pH and nitrogen concentration did not change with season. …
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HERBIVORY IMPACTS ON GROWTH AND SURVIVAL OF SEEDLINGS IN BOTTOMLAND HARDWOOD FOREST RESTORATION SITES IN THE POST OAK SAVANNAH AND BLACKLAND PRAIRIE ECOREGIONS OF TEXAS, USA
<p>Interest in bottomland hardwood forests (BLHW) ecology and restoration has increased over the past 40 years. These communities aid in water quality improvement, streambank stabilization, and urban expansion mitigation. They also provide important habitat for many species of wildlife. Since the …
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Floristic quality assessment of grassy slough preserve in Johnson County, Illinois
… of Mexico, approximately 7 million hectares of bottomland hardwood forest have been converted to agricultural production. Approximately 750,000 hectares of the eastern United States have been replanted or contracted for replanting into tree species. There are few studies published on woody …
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