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Robust Relationships For Simple Plantation Growth Models Based On Sparse Data, Jerome K. Vanclay 2010 Southern Cross University

Robust Relationships For Simple Plantation Growth Models Based On Sparse Data, Jerome K. Vanclay

School of Environment, Science and Engineering Papers

Three equations predicting height H = β1(t − 0.5)0.5, diameter D = β2(H − 1.3)/ln N, and mortality dN/N = −2(G/Gmax)3dD/D from plantation age (t), stocking (N) and basal area (G) can be calibrated with few data (even a single observation) for plantations in which re-measured data and growth models are unavailable. Despite having only three parameters to be estimated, these equations extrapolate reliably and allow objective forecasts of future plantation growth performance that may serve as useful first approximations until more precise growth models can be developed.


Land-Use Change Conflict Arising From Plantation Forestry Expansion: Views Across Australian Fence-Lines, Andrea J. Leys, Jerome K. Vanclay 2010 Southern Cross University

Land-Use Change Conflict Arising From Plantation Forestry Expansion: Views Across Australian Fence-Lines, Andrea J. Leys, Jerome K. Vanclay

School of Environment, Science and Engineering Papers

An annual trade deficit in Australia for forest products of approximately $2 billion (Aus$), predominantly in paper, pulp products and sawn timber, makes sound argument for continued support of plantation forestry expansion. Existing government policy promoting afforestation through fiscal tax-based incentives for Managed Investment Scheme (MIS) retail forestry however, has raised many questions regarding the need for performance targets and accountability criteria in response to the collapse of several private plantation companies during the global financial crisis of 2009 and 2010 that had been responsible for managing a large sector of the national estate. This paper reports on the first ...


Building A Comprehensive Collection Of Ash Germplasm, Mark P. Widrlechner 2010 United States Department of Agriculture

Building A Comprehensive Collection Of Ash Germplasm, Mark P. Widrlechner

NCRPIS Conference Papers, Posters and Presentations

This paper summarizes a presentation from the Congress Symposium, “The Introduction of the Emerald Ash Borer in North America, A Case Study of Invasive Species Epidemiology and Conservation of the Host Species.” It briefly discusses the state of Fraxinus (ash) taxonomy, ash as a landscape and forest tree, some of its specialized uses, including those by Native Americans, and its role in supporting other organisms. The devastation caused to native, North American ash populations by the introduction of Agrilus planipennis (emerald ash borer; EAB) to the Detroit, Michigan area has already led to the loss of tens of millions of ...


Regeneration Response And Seedling Bank Dynamics On A Dendroctonus Rufipennis-Killed Picea Engelmannii Landscape, R. Justin DeRose, James N. Long 2010 Utah State University

Regeneration Response And Seedling Bank Dynamics On A Dendroctonus Rufipennis-Killed Picea Engelmannii Landscape, R. Justin Derose, James N. Long

Aspen Bibliography

Question: How does regeneration response to a host- specific, high-severity, infrequent Dendroctonus rufipennis outbreak differ from our conceptualization of high-severity, infrequent/low-severity, frequent disturbance regimes in Picea engelmannii - Abies lasiocarpa communities? Location: Southern Utah, USA. Methods: One hundred and seven plots across a high- elevation P. engelmannii forest were sampled to re- construct pre-outbreak overstory and seedling bank densities, and calculate their associated metrics of diversity. Decade of establishment by seedling bank trees indicated ‘‘chronic’’ and ‘‘pulse’’ regenerators. Results: The post-outbreak overstory and seedling bank were dominated by A. lasiocarpa. Although Pinus flexilis, Pinus ponderosa, Picea pungens, and Psuedotsuga menziesii ...


Molecular Analysis Of Primary Vapor And Char Products During Stepwise Pyrolysis Of Poplar Biomass, Roger W. Jones, Tonu Reinot, John Frederick McClelland 2010 Iowa State University

Molecular Analysis Of Primary Vapor And Char Products During Stepwise Pyrolysis Of Poplar Biomass, Roger W. Jones, Tonu Reinot, John Frederick Mcclelland

Ames Laboratory Publications

Pyrolysis of biomass produces both pyrolysis oil and solid char. In this study, poplar has been pyrolyzed in a stepwise fashion over a series of temperatures from 200 to 500 °C, and both the primary products contributing to pyrolysis oil and the changes in the pyrolyzing poplar surface leading toward char have been characterized at each step. The primary products were identified by direct analysis in real time (DART) mass spectrometry, and the changes in the poplar surface were monitored using Fourier transform infrared (FTIR) photoacoustic spectroscopy, with a sampling depth of a few micrometers. The primary products from pyrolyzing ...


White-Tailed Deer Antler Research: A Response To Demarais And Strickland, Ben Koerth, James Kroll 2010 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University

White-Tailed Deer Antler Research: A Response To Demarais And Strickland, Ben Koerth, James Kroll

Faculty Publications

Demarais and Strickland presented several questions about the scope and validity of conclusions regarding predictability of mature antler size based on yearling antler size and produced a simulation model reported to demonstrate measurement bias in our 2008 study. We believe our conclusions were appropriate with our research hypothesis and demonstrated the assumed differential selection bias by hunters used in Demarais and Strickland was unwarranted. Demarais and Strickland provided no metadata to document the provenance of data used in their model and did not account for location, year, cohort, nutrition of research animals, or loss of individuals from their sample population ...


Restoring Wild Turkey To East Texas: Past And Present, Warren C. Conway, Christopher E. Comer, Gary Calkins, Jason Hardin, Jason Isabelle 2010 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State Universtiy, Nacogdoches, Texas 75962

Restoring Wild Turkey To East Texas: Past And Present, Warren C. Conway, Christopher E. Comer, Gary Calkins, Jason Hardin, Jason Isabelle

Faculty Publications

No abstract provided.


A Chronicle Of Changing American Attitudes Towards Wetlands, Matthew W. McBroom 2010 Stephen F Austin State University, Arthur Temple College of Forestry and Agriculture

A Chronicle Of Changing American Attitudes Towards Wetlands, Matthew W. Mcbroom

Faculty Publications

No abstract provided.


Broad-Scale Relations Between Conservation Reserve Program And Grassland Birds: Do Cover Type, Configuration And Contract Age Matter?, Sam Riffell, Daniel Scognamillo, L. Wes Burger Jr., Shawn Bucholtz 2010 Mississippi State University

Broad-Scale Relations Between Conservation Reserve Program And Grassland Birds: Do Cover Type, Configuration And Contract Age Matter?, Sam Riffell, Daniel Scognamillo, L. Wes Burger Jr., Shawn Bucholtz

Faculty Publications

The Conservation Reserve Program (CRP) is a voluntary cropland set-aside program where environmentally-sensitive cropland is retired to a conservation practice. Grassland birds should benefit because most CRP is grass habitat and because amount of land in CRP is highest in agriculture-dominated areas of the United States where grassland habitat has been most impacted. We used the Breeding Bird Survey and Common Land Unit (CLU) data (spatially-explicit data of farm field boundaries and land cover) to identify relations between types and configurations of CRP and grassland bird abundance in 3 Midwestern states. All 13 species we studied were related to at ...


Understory Vegetative Diversity Of Post-Thinned Pine Plantations Treated With Fertilizer, Fire And Herbicide In East Texas, Brian P. Oswald, Dean W. Coble, R R. Botting, Ken W. Farrish, James E. Van Kley 2010 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University, Nacogdoches, Texas 75962

Understory Vegetative Diversity Of Post-Thinned Pine Plantations Treated With Fertilizer, Fire And Herbicide In East Texas, Brian P. Oswald, Dean W. Coble, R R. Botting, Ken W. Farrish, James E. Van Kley

Faculty Publications

This study assessed biodiversity in the understory of two pine plantations where different management tools (fertilizer, prescribed burning, and herbicide application) were utilized. During three growing seasons, species, percent cover, and number of individuals, and physical characteristics were recorded. Responses to treatment were examined based on comparison of species richness, evenness, diversity, and importance. Two years after treatment, fertilized plots showed a decline in species richness, evenness, and diversity. Prescribed burning and herbicide treatments increased species richness but decreased species evenness, resulting in no change in diversity index. Herbicide treatment reduced the importance of dominant shrubs and increased the importance ...


Food, Nutrition, And Natural Resource Sciences In The Fy 2011 Budget. Chapter 27, American Assoc. For The Advancement Of Science Report Xxxv, William Fisher, Karl Glasener, Caron Gala Bijl, Mary Lee Watts, Lowell Randel, Steven H. Bullard, Jim Gulliford 2010 Stephen F. Austin State University, Arthur Temple College of Forestry and Agriculture

Food, Nutrition, And Natural Resource Sciences In The Fy 2011 Budget. Chapter 27, American Assoc. For The Advancement Of Science Report Xxxv, William Fisher, Karl Glasener, Caron Gala Bijl, Mary Lee Watts, Lowell Randel, Steven H. Bullard, Jim Gulliford

Faculty Publications

Food, agricultural, nutrition, and natural resource sciences are poised to make major contributions to improve human health and protect our environment. With the launch of the National Institute of Food and Agriculture (NIF A) in 2009, Agriculture Secretary Tom Vilsack said "the opportunity to truly transform a field of science happens at best once a generation." With the release of a report by the United Nations Food and Agriculture Organization stating that food production will need to nearly double by 2050 to meet the demands of a world population totaling more than nine billion, this announcement is timely. The current ...


Use Of Carfentrazone For Control Of Natural Pine In Forestry Site Preparation Areas, Andrew W. Ezell, Jimmie L. Yeiser 2010 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University

Use Of Carfentrazone For Control Of Natural Pine In Forestry Site Preparation Areas, Andrew W. Ezell, Jimmie L. Yeiser

Faculty Publications

Carfentrazone was applied in combination with imazapyr alone and three-way mixes with imazapyr and glyphosate to evaluate efficacy of natural pine control during site preparation activities. Results from four sites (two in MS, and one each in TX and SC) indicated that carfentrazone could assist in the control of small pine seedlings (less than six inches tall), but the control provided was not at a level considered acceptable for operational purposes. Larger pine seedlings (greater than one foot tall) were not adequately controlled by any of the treatments and shielding by other vegetation was an important factor in the control ...


Split-Season Herbaceous Weed Control For Full-Season Seedling Performance, Jimmie L. Yeiser, Andrew W. Ezell 2010 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University

Split-Season Herbaceous Weed Control For Full-Season Seedling Performance, Jimmie L. Yeiser, Andrew W. Ezell

Faculty Publications

Results from four loblolly pine (Pinus taeda L.) sites, one in each of MS and TX in 2001 and again in 2002, are presented. Twelve herbicide treatments and an untreated check were tested. Herbicide treatments were applied early (mid- March), late (mid-May), both timings, or not at all to achieve, early- late-, full-season, or no weed control. When averaged across all four sites and compared to the early treatment, bare ground was less from April through July and April through November on late treated and untreated plots, respectively. Full-season weed control provided numerically more bare ground than other treatments. When ...


Propagating Trembling Aspen From Root Cuttings: Impact Of Storage Length And Phenological Period Of Root Donor Plants, Jessica Snedden, Simon M. Landhausser, Victor J. Lieffers, Lee R. Charleson 2010 Utah State University

Propagating Trembling Aspen From Root Cuttings: Impact Of Storage Length And Phenological Period Of Root Donor Plants, Jessica Snedden, Simon M. Landhausser, Victor J. Lieffers, Lee R. Charleson

Aspen Bibliography

Two experiments were conducted to examine the effects of growing conditions, duration of cold storage, and distinct phenological periods of root donor plants on the propagation success of aspen rootlings. Root donor plants were produced either under greenhouse or open grown conditions. Root cuttings were periodically collected from donor plants that had been stored for various lengths of time in cold storage (up to 180 days), or that were stored dormant in cold storage (up to 150 days) and then grown for another full growing season. Longer storage of donor plants produced only slightly smaller rootlings and resulted in slightly ...


Aspen Biology, Community Classification, And Management In The Blue Mountains, David K. Swanson, Craig L. Schmitt, Diane M. Shirley, Vicky Erickson, Kenneth J. Schuetz, Michael L. Tatum, David C. Powell 2010 Utah State University

Aspen Biology, Community Classification, And Management In The Blue Mountains, David K. Swanson, Craig L. Schmitt, Diane M. Shirley, Vicky Erickson, Kenneth J. Schuetz, Michael L. Tatum, David C. Powell

Aspen Bibliography

Quaking aspen (Populus tremuloides Michx.) is a valuable species that is declining in the Blue Mountains of northeastern Oregon. This publication is a compilation of over 20 years of aspen management experience by USDA Forest Service workers in the Blue Mountains. It includes a summary of aspen biology and occurrence in the Blue Mountains, and a discussion of aspen conservation and management techniques such as fencing, conifer removal, and artificial propagation. Local data on bird use of aspen stands, insects and diseases in aspen, and genetic studies of aspen are also included. An aspen community classification developed from over 200 ...


Relationship Of Climate And Growth Of Quaking Aspen (Populus Tremuloides) In Yellowstone National Park, Erik S. Jules, Allyson L. Carroll, Matthew J. Kauffman 2010 Utah State University

Relationship Of Climate And Growth Of Quaking Aspen (Populus Tremuloides) In Yellowstone National Park, Erik S. Jules, Allyson L. Carroll, Matthew J. Kauffman

Aspen Bibliography

Quaking aspen is a widespread tree that is in decline across wide areas of western North America, and is predicted to experience a large range shift if future climate predictions are realized. The purpose of our study was to determine what climate factors have influenced aspen growth in Yellowstone National Park, USA, and to determine whether these climatic influences vary across a heterogeneous landscape. We extracted increment cores from 10-12 aspen in each of 16 stands spread across a 1,526 km2 area. Using ring widths, we created a182-year standardized chronology from 1821 to 2003 A.D. composed of 151 ...


Potential Applications Of Randomised Graph Sampling To Invasive Species Surveillance And Monitoring., Mark J. Ducey, Kathleen M. O'Brien 2010 University of New Hampshire

Potential Applications Of Randomised Graph Sampling To Invasive Species Surveillance And Monitoring., Mark J. Ducey, Kathleen M. O'Brien

Natural Resources and the Environment Scholarship

Abstract

Many invasive plants and animals disperse preferentially through linear networks in the landscape, including road networks, riparian corridors, and power transmission lines. Unless the network of interest is small, or the budget for surveillance is large, it may be necessary to draw inferences from a sample rather than a complete census on the network. Desired features of a surveillance system to detect and quantify invasion include: (1) the ability to make unbiased statements about the spatial extent of invasion, the abundance of the invading organism, and the degree of impact; (2) the ability to quantify the uncertainty associated with ...


Estimation Of Effective Plant Area Index For South Korean Forests Using Lidar System, D. A. Kwak, W. K. Lee, Menas Kafatos, Y. Son, H. K. Cho, S. H. Lee 2010 Korea University

Estimation Of Effective Plant Area Index For South Korean Forests Using Lidar System, D. A. Kwak, W. K. Lee, Menas Kafatos, Y. Son, H. K. Cho, S. H. Lee

Mathematics, Physics, and Computer Science Faculty Articles and Research

Light Detection and Ranging (LiDAR) systems can be used to estimate both vertical and horizontal forest structure. Woody components, the leaves of trees and the understory can be described with high precision, using geo-registered 3D-points. Based on this concept, the Effective Plant Area Indices (PAIe) for areas of Korean Pine (Pinus koraiensis), Japanese Larch (Larix leptolepis) and Oak (Quercus spp.) were estimated by calculating the ratio of intercepted and incident LIDAR laser rays for the canopies of the three forest types. Initially, the canopy gap fraction (GLiDAR) was generated by extracting the LiDAR data reflected from the canopy surface, or ...


Gis @ Ut Libraries, Allison Roberts 2009 University of Tennessee - Knoxville

Gis @ Ut Libraries, Allison Roberts

Allison Roberts

Information handout/poster for GIS services at UT


Wind Energy Glossary: Technical Terms And Concepts, Erik Edward Nordman 2009 Grand Valley State University

Wind Energy Glossary: Technical Terms And Concepts, Erik Edward Nordman

Erik Edward Nordman

The terms in this glossary are organized into three sections: (1) Electricity Transmission Network; (2) Wind Turbine Components; and (3) Wind Energy Challenges, Issues and Solutions.


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