NDLTD logo NDLTD Union Catalog and Global ETD Search

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.

Results

Showing 1 to 12 of 12 for “"Tree basal area"”.

  1. Models of stand basal area distributions, individual tree basal area growth, and height-diameter relationships for loblolly pine

    Green, Edwin JamesVirginia Polytechnic Institute and State University1981

    … with developing methodologies for predicting basal area distributions and individual tree basal areas. Data for the study was from the Hill Farm Experiment Station at Homer, Louisiana. Five height-diameter (basal area) curves were examined to determine which was most appropriate for the data …

    vt Repository record

  2. Habitat Selection By Female White-Tailed Deer in the Northern Black Hills, South Dakota and Wyoming

    Kennedy, John F.

    … cover, density of tall shrubs < 12.7 cm dbh, tree basal area, ground cover of grass-forb and shrubs < lm in height, distance (m) and diameter (cm dbh) of the nearest tree, and topographic variables. During winter, coniferous canopy cover, tree basal area, and grass-forb cover were important …

    sdstate Repository record

  3. EFFECTIVENESS OF PRESCRIBED FIRE ON MEETING FUEL LOAD AND WILDLIFE HABITAT MANAGEMENT OBJECTIVES IN EAST TEXAS NATIONAL FORESTS

    Wall, Trey2019

    … as well as a reduction in forest overstory tree basal area, initiation of more growing season burns, creating mosaics of burn intervals and ignition patterns, and herbicide applications to more effectively restore the forests to native, historical levels.</p> <p> Because Texas Parks and …

    sfasu Repository record

  4. Forest Net Primary Production Resistance Across a Gradient of Moderate Disturbance

    Goodrich-Stuart, Ellen2019

    … that kill or defoliate only a subset of canopy trees such as insect defoliation, drought, and age-related senescence are increasing in extent and frequency; yet, little is known about the effect of moderate disturbance on forest production and the mechanisms sustaining or supporting the recovery …

    vcu Repository record

  5. Livestock Exclusion Effects on the Structure and Function of Headwater Streams

    Cook, Kenneth ReidVirginia Tech2003

    … influence on stream organic matter dynamics. Tree basal area in a 20 m wide riparian corridor was predictive of stream coarse benthic organic matter standing stocks. Higher benthic organic matter standing stocks and differences in algal biomass in fenced and forested sites indicate different …

    vt Repository record

  6. Modeling the impact of gypsy moth defoliation in individual tree mortality and basal area growth of northern hardwoods of central Pennsylvania

    Amrhein, John FrancisVirginia Tech1988

    … on nearly 600 plots in central Pennsylvania. Tree and stand characteristics recorded between 1978 and 1985 include estimates of percent defoliation on individual trees. Logistic regression using maximum likelihood estimation was employed to model individual-tree mortality of 15 species in …

    vt Repository record

  7. Veld condition indexing : relevance to wildlife management?

    Cumming, ShannonDepartment of Biological Sciences2011

    … is that the greatest biomass should be in areas of high veld condition. Soil condition and habitat structure were also explored in terms of their relationship with the veld condition index. Animal biomass was found to decrease slightly with increasing veld condition index scores. There was …

    cape-town Repository record

  8. An integrated system of stand models for loblolly pine

    Daniels, Richard F.Virginia Polytechnic Institute and State University1981

    … model is a distance dependent individual tree model which simulates the growth and competitive interaction of trees in a stand. Tree basal area and height growth were modeled using a modified Chapman-Richards function in terms of potential growth, current size, relative size, crown ratio, …

    vt Repository record

  9. Assessment of ecosystem integrity of lowland dipterocarp forest ecosystem using remote sensing

    Abdul Razak, Muhammad AzmilUniversiti Tun Hussein Onn Malaysia2021

    … integrity index for lowland dipterocarp forest. Tree Basal Area (BA), aboveground biomass (AGB) and volume plot from plot data were used as dependent variables, while remote sensing data from Landsat, Pleiades and LiDAR were used as independent variables for model development. Tree plot census …

    uthm Repository record

  10. Stand structure, growth, and mortality in southern Appalachian spruce-fir

    Nicholas, N. S.Virginia Tech1992

    … and distributions, stand level foliage surface area (LAI) estimations, and mortality and growth patterns were determined using consistent sampling methodology for a network of 142 (20 m x 20 m) permanent plots at three southern Appalachian spruce-fir sites (Mt. Rogers National Recreation Area …

    vt Repository record

  11. Understanding White-Tailed Deer Productivity: Population Ecology of Neonates

    Grovenburg, Troy W.

    … varied (P < 0.001) with age and sex of neonate; tree canopy cover (P < 0.001) and tree basal area (P < 0.001) decreased with age of neonates with no bed sites observed in forested cover after 18 days of age. Male neonates selected sites with less grass cover (P < 0.001), vertical height of …

    sdstate Repository record

  12. Relationships between soil chemical properties and forest structure, productivity and floristic diversity along an altitudinal transect of moist tropical forest in Amazonia, Ecuador.

    Unger, Malte Arne2012

    … mittels Dendrometer auf 32 Flächen. Baum-Basalfläche war am höchsten auf 1500 und 2000 m, wobei AGB und Produktivitätsmaße keinen Trend mit der Meereshöhe aufzeigten. Entlang aller Flächen fanden wir eine mittlere Basalfläche von 47,2±1,9 m2 ha-1, mittlere AGB von 336±17 Mg ha-1 und einen …

    goettingen Repository record