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 52 for “"Diameter at Breast Height"”.
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Modeling growth dynamics of juvenile loblolly pine plantations
… growth dynamics of juvenile loblolly pine plantations can help to address important management decisions that have to be made in young stands. The present study addressed diameter and height prediction as well as crown development analysis as functions of independent variables such as site …
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Modeling scenic quality of residential streets using mensurational variables
… Arbor, Michigan for both Summer and Winter vegetative conditions. Scenic quality was quantified using the Scenic Beauty Estimation method. Only variables that existed in the city's computer data base were used. Variables such as diameter at breast height, basal area, number of trees, and tree …
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Inventorying trees in an urban landscape using small-footprint discrete return imaging lidar
Automation of urban tree inventory using remote sensing is needed not only to reduce inventory costs but also to support carbon accounting for urban planners and policy-makers. However, urban areas are heterogeneous and complex, and a more sophisticated approach is needed for using remote-sensing …
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Restoration of Red Spruce (Picea rubens) and Virginia Northern Flying Squirrel (Glaucomys sabrinus fuscus) Habitat in West Virginia
… sabrinus fuscus, VNFS) is a rare subspecies that relies on high-elevation red spruce (Picea rubens) forests in the central Appalachian Mountains of West Virginia and Virginia. Existing habitat suitability models emphasize the composition of the red spruce canopy but lack insights into the …
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Evaluation of Red Alder Mortality in the Little Creek Watershed Following the 2009 Lockheed Fire
… zone was observed and assessed for mortality. Height, diameter at breast height (DBH), and age were collected on selected trees. An estimation of red alder large woody debris (LWD) input to Little Creek since a 2010 LWD survey (Smith, 2010) was calculated using average red alder tree dimensions …
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Mortality Assessment of Redwood and Mixed Conifer Forest Types in Santa Cruz County Following Wildfire
… of the Santa Cruz Mountains burning approximately 7,819 acres. Foresters and other land managers were left with challenging decisions on how to evaluate tree mortality. Big Creek Lumber Company, California Polytechnic State University, San Luis Obispo (Cal Poly)’s Swanton Pacific Ranch (SPR), …
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EFFECT OF MYCORRHIZAE INOCULATION ON THE GROWTH AND SUCCESS OF THREE TAXODIUM DISTICHUM HYBRIDS IN SALINE - IMPACTED COASTAL SOILS
… in high salt deposition in the soil and groundwater. This caused a loss of many native plant species. A study was initiated to determine effective ways to promote the growth conditions of three bald cypress genotypes (<em>Taxodium distichum</em> var <em>distichum</em> and <em>Taxodium …
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Chinese Tallow Long-Term Impact on Stand Dynamics in a Bottomland Hardwood Forest Following Vegetation Management
… (L.) Small) is an 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 …
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The effect of native forest dynamics upon the arrangements of species in oak forests-analysis of heterogeneity effects at the example of epigeal arthropods
… assemblages of epigeal spiders was studied in a natural forest and in a managed forest. Additionally the effects of small-scale microhabitat heterogeneity of managed and unmanaged forests were determined by analysing the spider assemblages of three different microhabitat structures (i. vegetation, …
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PILOT STUDY ON THE PREDICTION OF HEART ROT IN APPARENTLY SOUND WESTERN LARCH
Since many cavity-excavating birds require trees with heart rot, managers routinely emphasize decayed trees in their snag retention prescriptions. Where too few trees are present with obvious indicators of decay, apparently sound trees are left to meet retention objectives. These trees may also …
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PILOT STUDY ON THE PREDICTION OF HEART ROT IN APPARENTLY SOUND WESTERN LARCH
Since many cavity-excavating birds require trees with heart rot, managers routinely emphasize decayed trees in their snag retention prescriptions. Where too few trees are present with obvious indicators of decay, apparently sound trees are left to meet retention objectives. These trees may also …
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An Assessment of the Utility of a Non-Metric Digital Camera for Measuring Standing Trees
… of a commercially available, non-metric, solid-state matrix camera to capture spatial and spectral data from an individual tree bole that can be used to measure characteristics about the stem. In this study diameters and heights were measured and used to estimate the volume of 20 red oak (Quercus …
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Assessment of Prediction Bias in Crown Biomass Equations for Important Conifer Species of the Inland Northwest
Several crown biomass equations have been developed for local, regional, and national scale biomass estimation across the United States. The prediction equations most commonly used were developed by Brown (1978) and Jenkins et al. (2003). Because of the widespread application of these equations for …
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Assessment of Prediction Bias in Crown Biomass Equations for Important Conifer Species of the Inland Northwest
Several crown biomass equations have been developed for local, regional, and national scale biomass estimation across the United States. The prediction equations most commonly used were developed by Brown (1978) and Jenkins et al. (2003). Because of the widespread application of these equations for …
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The investigation of edge effects within ragmented forest islands in Short Hills Provincial Park
… within the field of landscape ecology, that terrestrial fragmentation contributes to increased heterogeneity at the landscape level. It has also been observed that elevated areas of edge habitat occur within fragmented landscapes. Spatial and temporal edge effects were investigated in four …
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Vegetation and Soil Patterns at a Mountain Wetland Ecotone
… study analyzes tree, soil, and microtopographic patterns present within the Cranberry Glades, a bog wetland complex located in the mountains of West Virginia. The Cranberry Glades are comprised of four open bog meadows, which provide unique habitat to several rare and endangered plant species. …
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Crop tree release impacts both the understory and overstory in mixed oak stands of the southern Appalachian Mountains
Crop tree release (CTR) is an intermediate silvicultural treatment that can be used by woodland owners to achieve multiple management goals. Our study addresses a knowledge gap regarding the understory response to CTR in the Appalachian Mountains of southwest Virginia. An increase in understory …
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Estimation of Important Scenic Beauty Covariates from Remotely Sensed Data
… this study was to determine if remotely sensed data could be used to model scenic beauty. Terrestrial digital images from within forest stands located in Prince Edward Gallion State Forest near Farmville, Virginia were rated for their scenic beauty by a group of students to obtain scenic beauty …
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Stem and Branch Diameter Response in Pruned Douglas-fir Plantations (Pseudotsuga menziesii var. menziesii): Implications for Volume and Clear Wood Production in the U.S. Pacific Northwest
… around 60-80 years of age. Due to 40-year rotations in production settings, this species has the potential to benefit from the silvicultural treatment of pruning. Previous literature indicates that pruning may increase overall height and diameter growth rates, reduce log taper and produce more …
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Predicting biodiversity loss in insular neotropical forest habitat patches
Neotropical forests have experienced high rates of biodiversity loss as a result of burgeoning land-use changes. Habitat conversion into cropland, pastures, and more recently hydroelectric lakes, are leading drivers of forest loss and fragmentation of pristine forests in the world’s most biodiverse …
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