Index Catalog // ScholarsArchive@OSU

Effects of Subsampling Trees and Imputation Methods on the Accuracy of Height-to-Crown-Base Predictions for Douglas-fir in Southwest Oregon

Creator:: Allensworth, Elijah J.
Abstract:: Accurate estimates of height-to-crown-base (HTCB) are essential for the reliable projections of stand structure over time required for sustainable forest management. Yet, HTCB often measured alongside total height (HT) for only for a subsample of trees in traditional stand-based inventories and must be imputed for all others. We compared the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Elijah J

Examination of imputation methods to estimate status and change of forest attributes from paneled inventory data

Creator:: Eskelson, Bianca N. I.
Abstract:: The Forest Inventory and Analysis (FIA) program conducts an annual inventory throughout the United States. In the western United States, 10% of all plots (one panel) are measured annually, and a moving average is used for estimating current condition and change of forest attributes while alternative methods are sought in...
Resource Type:: Dissertation
Full Text:: . ....................................................... 73 5.1: Descriptive statistics for stands, n=10,607

Strategies for sampling and estimation of aboveground tree biomass

Creator:: Poudel, Krishna Prasad
Abstract:: The issue of global climate change and an increasing interest in the reduction of fossil fuel carbon dioxide emissions by using forest biomass for energy production has increased the importance of quantifying forest biomass in recent years. The official U.S. forest carbon reporting is based on the forest biomass estimates...
Resource Type:: Dissertation
Full Text:: , Joonghoon Shin, Elijah Allensworth, Steve Huff, Michael Hoe, and Will Pollock. This journey would not have

Methodological and managerial applications of the structural norm approach to social and facility capacity indicators in Hawai'i's coastal recreation areas

Creator:: Ceurvorst, Robyn L.
Abstract:: Tropical coastal and marine areas are popular for recreation, leisure, and tourism activities, but these activities can cause social (e.g., crowding), ecological (e.g., coral trampling), and managerial impacts (e.g., pressure on facilities). The concept of norms is one approach for examining user acceptance or tolerance of these impacts. This dissertation...
Resource Type:: Dissertation
Full Text:: on the island of Oahu, Hawai'i (n = 2,821; 87% response rate). Results of the first article showed

Characterization of Fungal Endophyte Populations in Ponderosa Pine (Pinus ponderosa) Needles in The B&B Fire Complex of The Eastern Cascade Mountain Range

Creator:: Scrivani, James V.
Abstract:: Forests are some of the most ecologically diverse and dense habitats on the planet. Research shows that the endophyte community, or the fungi, bacteria, and viruses within a forest ecosystem is highly diverse. Fungal endophytes are defined as fungi that live within the tissues of host plants. Relationships between fungal...
Resource Type:: Masters Thesis
Full Text:: -15% of historic levels (Bolsinger & Waddell, 1993). This reduction in old-growth forests can be

Forest Harvest Residue Moisture Management in the Pacific Northwest, USA

Creator:: Belart Lengerich, Maria Francisca
Abstract:: Moisture content management is a key requirement to improve forest harvest residue economics for bioenergy production. This dissertation aims to contribute towards better management through these three general objectives (1) Determine average moisture content of fresh forest harvest residues and its changes over the different seasons of the year, focusing...
Resource Type:: Dissertation

Modeling the effects of forest management on in situ and ex situ longleaf pine forest carbon stocks

Creator:: Gonzalez-Benecke, C. A., Samuelson, L. J., Martin, T. A., Cropper, W. P., Jr., Johnsen, K. H., Stokes, T. A., Butnor, J. R., and Anderson, P. H.
Abstract:: Assessment of forest carbon storage dynamics requires a variety of techniques including simulation models. We developed a hybrid model to assess the effects of silvicultural management systems on carbon (C) budgets in longleaf pine (Pinus palustris Mill.) plantations in the southeastern U.S. To simulate in situ C pools, the model...
Resource Type:: Article
Full Text:: Carrigan Drive, University of Vermont, Burlington, VT 05405, USA a r t i c l e i n f o Article history

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

Creator:: Huff, Steven
Abstract:: Quantifying biomass is important for sustainable forest management. The purpose of this study is to obtain allometric relationships for seven species of shrubs common in northeastern California so that estimates of carbon and fuel loading may be better realized. Although some shrub biomass equations exist, such equations are limited in...
Resource Type:: Masters Thesis
Full Text:: process; and to Elijah Allensworth, Michael Shettles, Jeremiah Moore, Michael Hoe, and Dr. Mauro

The Effect of Downed-trees on Harvesting Productivity and Costs in Beetle-killed Stands

Creator:: Kim, Yaejun
Abstract:: The mountain pine beetle has impacted over 5 million hectares of pine forests in the Rocky Mountains region in the United States. Although some beetle-killed stands are available for salvage harvesting, there are many uncertainties in harvesting beetle-killed stands including safety, costs, recoverable products and their values. These uncertainties impose...
Resource Type:: Masters Thesis
Full Text:: Reservoir (46° 28' N, 112° 11' W) in western Montana (Figure 1). The dominant tree species was lodgepole

Error propagation in estimating aboveground biomass using terrestrial LiDAR

Creator:: Shettles, Michael A.
Abstract:: Broad-scale estimates of above ground forest biomass (AGB) are typically produced by applying individual-tree equations to inventory data consisting of measurements from probabilistically or purposively selected trees. The associated uncertainty for these estimates depends primarily on three sources of error that interact and propagate: (1) measurement error, the quality of...
Resource Type:: Masters Thesis
Full Text:: Elijah Allensworth for helping whack back the brush and for carrying the heavy wooden signs while I had

Examination of airborne discrete-return lidar in prediction and identification of unique forest attributes

Creator:: Wing, Brian M.
Abstract:: Airborne discrete-return lidar is an active remote sensing technology capable of obtaining accurate, fine-resolution three-dimensional measurements over large areas. Discrete-return lidar data produce three-dimensional object characterizations in the form of point clouds defined by precise x, y and z coordinates. The data also provide intensity values for each point that...
Resource Type:: Dissertation
Full Text:: and depiction of how understory layer height range is determined. n = number of shrubs sampled

Assessment of Airborne Light Detection and Ranging (LiDAR) for use in common forest engineering geomatic applications

Creator:: Craven, Michael B.
Abstract:: Airborne Light Detection and Ranging (LiDAR) has become a popular remote sensing technology to create digital terrain models and provide forest inventory information. However, little research has been done to investigate the accuracy of using airborne LiDAR to perform measurement tasks common to Forest Engineering. This thesis contains two manuscripts...
Resource Type:: Masters Thesis
Full Text:: the field data collection: Kevin Brown, Jereme Frank, Elijah Allensworth, Katie Hall, and Mark

Multi-temporal LiDAR Analysis of Landscape Fire Effects in Southwestern Oregon

Creator:: Hoe, Michael
Abstract:: Quantitative assessments of post-fire effects are key to improving our understanding of ecosystem resilience. While remote sensing technology has allowed us to assess post-fire landscape effects, we are often limited by the lack of information related to pre-fire forest attributes. As a result, our ability to interpret fire effects in...
Resource Type:: Masters Thesis
Full Text:: enthusiasm, support, and ideas; Elijah Allensworth, Krishna Poudel, Steven Huff, Joonghoon Shin, Karin

Estimating Forest Inventory Attributes Using Airborne LiDAR in Southwestern Oregon

Creator:: Shin, Joonghoon
Abstract:: This thesis mainly consists of two parts: (1) comparing statistical modeling methods based on the area-based approach (ABA) for predicting forest inventory attributes using airborne light detection and ranging (LiDAR) data (Chapter 2), and (2) suggesting a new methodology fusing the individual tree detection (ITD) approach and the ABA for...
Resource Type:: Masters Thesis
Full Text:: Kralicek, Bryce Frank, Al Pancoast, Ty Nietupski, Mike Shettles, Lacey Jeroue, Elijah Allensworth, Steve

Analysis and operational considerations of biomass extraction on steep terrain in western Oregon

Creator:: Flint, Benjamin R.
Abstract:: The development of bioenergy from biomass has dominated the minds of forest engineering researchers over the last decade. One of the main themes that has been generated from that research is that bioenergy from biomass has major operational hurdles to overcome before becoming economically feasible. More directly, the impact of...
Resource Type:: Masters Thesis

Restructuring of land and community in the remote rural west : the case of Wallowa County, Oregon

Creator:: Abrams, Jesse
Abstract:: Since at least the 1970s, rural areas in the western United States, as elsewhere across the country and world, have been subject to social, economic, and political forces that have resulted in novel demographic and land tenure trends when compared to previous decades. Collectively, these processes of restructuring have created...
Resource Type:: Dissertation

ScholarsArchive@OSU

Effects of Subsampling Trees and Imputation Methods on the Accuracy of Height-to-Crown-Base Predictions for Douglas-fir in Southwest Oregon

Examination of imputation methods to estimate status and change of forest attributes from paneled inventory data

Strategies for sampling and estimation of aboveground tree biomass

Methodological and managerial applications of the structural norm approach to social and facility capacity indicators in Hawai'i's coastal recreation areas

Characterization of Fungal Endophyte Populations in Ponderosa Pine (Pinus ponderosa) Needles in The B&B Fire Complex of The Eastern Cascade Mountain Range

Forest Harvest Residue Moisture Management in the Pacific Northwest, USA

Modeling the effects of forest management on in situ and ex situ longleaf pine forest carbon stocks

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

The Effect of Downed-trees on Harvesting Productivity and Costs in Beetle-killed Stands

Error propagation in estimating aboveground biomass using terrestrial LiDAR

Examination of airborne discrete-return lidar in prediction and identification of unique forest attributes

Assessment of Airborne Light Detection and Ranging (LiDAR) for use in common forest engineering geomatic applications

Multi-temporal LiDAR Analysis of Landscape Fire Effects in Southwestern Oregon

Estimating Forest Inventory Attributes Using Airborne LiDAR in Southwestern Oregon

Analysis and operational considerations of biomass extraction on steep terrain in western Oregon

Restructuring of land and community in the remote rural west : the case of Wallowa County, Oregon

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