Browsing Faculty Works, Department of Forest Resources and Environmental Conservation by Issue Date
Now showing items 1-20 of 61
-
on estimating aboveground weights of tree stands
(Ecological Society of America, 1975)Simulated sampling of nine tree stands was used to compare estimated stand component weights with known weights based on complete harvest. On average, estimates based on regressions of logarithm weight on either logarithm ... -
Sound transmission loss of gypsum wallboard wall partitions
(Acoustical Society of America, 1977)Using the data bank of the acoustic laboratory of Domtar Research, statistical equations based on frequency and surface density were derived for predicting sound transmission loss (STL) and sound transmission class (STC) ... -
Proceedings of a Symposium on Yellow-Poplar Construction Lumber: an Emerging Development Opportunity for Southwest Virginia
(LMA Research & Education Foundation, 1989)the proceedings highlight the potential for the establishment of a construction lumber industry based on yellow-poplar in Southwest Virginia and the new capital investments and innovations in production and marketing that ... -
Postoptimal linear programming analysis of farm machinery
(American Society of Agricultural and Biological Engineers, 1990)Linear programming (LP) is a widely used technique for farm machinery selection. Shadow prices from LP models are typically used to identify farm machinery bottlenecks. Shadow prices represent the value of an additional ... -
sampling methods to estimate foliage and other characteristics of individual trees
(Ecological Society of America, 1995-06)The total foliar area or mass of a tree is difficult to measure, as is its bark or cambial area, and various other components of aboveground biomass. A variety of sampling methods is proposed and estimators of these ... -
accuracy of visible and ultraviolet light for estimating live root proportions with minirhizotrons
(Ecological Society of America, 1995-10) -
Spatial and Temporal Variation in Soil and Vegetation Impacts on Campsites
(Ecological Society of America, 1996-05)We studied the impacts of camping on soil and vegetation at Delaware Water Gap National Recreation Area. We assessed the magnitude of impact on campsites that varied in amount of use and in topographic position. We also ... -
Global patterns of lake ice phenology and climate: Model simulations and observations
(American Geophysical Union, 1998-11-27)Lake ice phenology parameters (dates of ice onset and thaw) provide an integrative climatic description of autumn to springtime conditions. Interannual variations in lake ice duration and thickness allow estimates of local ... -
sampling-skewed biological populations: behavior of confidence intervals for the population total
(Ecological Society of America, 1999-04)Four populations were repeatedly sampled with the aim of examining interval estimation of the cumulative amount, T, of some characteristic that has a positively skewed distribution, a feature of many biological populations. ... -
Laboratory measurements and modeling N mineralization potential in Virginia Coastal Plain agricultural, fallow, and forest soils
(American Society of Agricultural and Biological Engineers, 2000)A long-term aerobic incubation and leaching technique was used to measure N mineralization of surface and subsurface soils (sandy loam) from agricultural,forest, and fallow sites in a Virginia Coastal Plain watershed. N ... -
Effects of forest harvesting best management practices on surface water quality in the Virginia coastal plain
(American Society of Agricultural and Biological Engineers, 2000)Three small watersheds located in Westmoreland County, Virginia, were monitored to evaluate the impact of forest clearcutting on surface water quality and to evaluate the effectiveness of forestry best management practices ... -
Effectiveness of a confinement strategy for reducing campsite impacts in Shenandoah National Park
(Cambridge University Press, 2004-12)The expansion and proliferation of backcountry campsites is a persistent problem in many parks and protected areas. Shenandoah National Park (SNP) has one of the highest backcountry overnight use densities in the USA ... -
Diversity-invasibility across an experimental disturbance gradient in Appalachian forests
(Ecological Society of America, 2008-01)Research examining the relationship between community diversity and invasions by normative species has raised new questions about the theory and management of biological invasions. Ecological theory predicts, and small-scale ... -
Edaphic and climatic effects on forest stand development, net primary production, and net ecosystem productivity simulated for Coastal Plain loblolly pine in Virginia
(American Geophysical Union, 2008-01-11)We used SECRETS-3PG to simulate net primary production (NPP) and net ecosystem productivity (NEP) of loblolly pine (Pinus taeda L.) growing on the Virginia Coastal Plain, focusing on the effects of soils and climate, and ... -
Growth, Collapse, and Reorganization of the Annapurna Conservation Area, Nepal: an Analysis of Institutional Resilience
(Resilience Alliance, 2010)Community-based conservation institutions can be conceptualized as complex adaptive systems that pass through a cycle of growth, maturation, collapse, and reorganization. We test the applicability of this four-phase adaptive ... -
Biodiversity conservation in the era of biofuels: risks and opportunities
(Ecological Society of America, 2011-04)Growing demand for alternative energy sources has contributed to increased biofuel production, but the effects on biodiversity of land-use change to biofuel crops remain unclear. Using a meta-analysis for crops being used ... -
Comparing sediment trap data with the USLE-forest, RUSLE2, and WEPP-road erosion models for evaluation of bladed skid trail BMPs
(American Society of Agricultural and Biological Engineers, 2012)Three erosion models, the Universal Soil Loss Equation for Forestry (USLE-Forest), the Revised Universal Soil Loss Equation Version 2 (RUSLE2), and the Water Erosion Prediction Project for Forest Roads (WEPP-Road), were ... -
It takes a community to raise a hydrologist: the Modular Curriculum for Hydrologic Advancement (MOCHA)
(Copernicus Gesellschaft Mbh, 2012-01-01)Protection from hydrological extremes and the sustainable supply of hydrological services in the presence of changing climate and lifestyles as well as rocketing population pressure in many parts of the world are the ... -
Estimating biophysical parameters of individual trees in an urban environment using small footprint discrete-return imaging lidar
(MDPI, 2012-02-15)Quantification of biophysical parameters of urban trees is important for urban planning, and for assessing carbon sequestration and ecosystem services. Airborne lidar has been used extensively in recent years to estimate ... -
Social and Ecological Factors Influencing Attitudes Toward the Application of High-Intensity Prescribed Burns to Restore Fire Adapted Grassland Ecosystems
(Resilience Alliance, 2013)Fire suppression in grassland systems that are adapted to episodic fire has contributed to the recruitment of woody species in grasslands worldwide. Even though the ecology of restoring these fire prone systems back to ...
