Other Forestry and Forest Sciences Commons^™

Productivity And Cost Of A Cut-To-Length Commercial Thinning Operation In A Northern California Redwood Forest, Kigwang Baek

Cal Poly Humboldt theses and projects

Cut-to-length (CTL) harvesting systems have recently been introduced to the redwood forests of California’s north coast. These machines are being used to commercially thin dense redwood (Sequoia sempervirens) stands which tend to form clumps of stems that vigorously sprout from stumps after a harvest. One of the challenges is to avoid damaging residual trees which can decrease productivity, increase costs, and lower the market value of trees. The goal of this study was to evaluate the productivity and costs associated with CTL systems used in a redwood forests and use that data to develop equations for predictions. Time …

Plant Discrimination By Support Vector Machine Classifier Based On Spectral Reflectance, Saman Akbarzadeh, Arie J. Paap, Selam T. Ahderom, Beniamin Apopei, Kamal Alameh

Research outputs 2014 to 2021

Support Vector Machine (SVM) algorithms are developed for weed-crop discrimination and their accuracies are compared with a conventional data-aggregation method based on the evaluation of discrete Normalised Difference Vegetation Indices (NDVIs) at two different wavelengths. A testbed is especially built to collect the spectral reflectance properties of corn (as a crop) and silver beet (as a weed) at 635 nm, 685 nm, and 785 nm, at a speed of 7.2 km/h. Results show that the use of the Gaussian-kernel SVM method, in conjunction with either raw reflected intensities or NDVI values as inputs, provides better discrimination accuracy than that attained …

Above-Ground Biomass And Carbon Estimations And Recommendations For Forests In Turkey, Cuma Uykun

Dissertations, Master's Theses and Master's Reports

Climate change mitigation and biodiversity conservation are issues that are tightly related to the environment and the public’s awareness of forest conservation, which are currently major areas of global interest. Greenhouse gas emissions and removals are required to be reported regularly (5 year intervals) and in compliance with the United Nation’s Framework Convention on Climate Change (UNFCCC) of 1992, which was later extended by the Kyoto Protocol International Treaty. The UNFCCC`s policy has been accepted by more than 150 countries. Turkey`s forests are controlled and managed by the government and some major tree species still need to have their own …

Estimation Of Dbh Using Tree Variables Derived From Aerial Lidar For Ford Forest, Baraga, Michigan, Tugay Demiraslan

Dissertations, Master's Theses and Master's Reports

This study implemented LiDAR (Light Detection and Ranging) remote sensing technology and applied ITD (Individual Tree Detection) methods as an approach to estimate some essential tree variables, such as DBH (Diameter at Breast Height), height, volume, and biomass for Ford Forest Research Center in Upper Peninsula, Michigan. There were 34 deciduous (1 bigtooth aspen, 9 red oaks, 20 sugar maples, 2 white birches, and 2 yellow birches) and 17 coniferous (2 eastern hemlocks, 11 red pines, and 4 white pines) subject tree species. There were two different available LiDAR datasets from the same area that were collected in 2011 and …

Assessment Of Vegetation Response To Wildfire At Bandelier National Monument, New Mexico: Case Study Of The Las Conchas Fire, Gladys Valentin-Gonzalez

Geography ETDs

In the past couple of decades, there has been an increase in the occurrence of wildfire events in the United States. The U.S. Forest Service estimates that over 73,000 wildfires on average occur annually in the U.S., burning about 7.3 million acres of land. Bandelier National Monument, in northern New Mexico, has been affected by several wildfires in the past 40 years, one of the most recent being the Las Conchas Fire in 2011, which burned over 60,700 hectaresin Bandelier National Monument and Valles Caldera National Preserve. This research explores a remote-sensing based assessment of vegetation response to and recovery …

Timber Talk, Vol. 55, No. 4, December 2017

Timber Talk: Nebraska Forest Industry Newsletter

Lumber Market Reports: Northern, Southern, Appalachian

Hardwood Lumber Prices: Green, Kiln-Dried, Pallet Lumber, Ties (7x9)

Tribal Walnut Timber Harvesting Expanding in Nebraska, by Anthony Crill, Bureau of Indian Affairs

To Influence Buyers, Tell Stories, by Paul Reilly, Reilly Sales Training

Green Star Energy Group, South Sioux City Celebrates Bioenergy Day

Welcome Kristina Hughes

Nebraska Forest Industry Spotlight: Native Lumber & Sawmill, Litchfield

Wood Businesses Work to Increase Marketing Skills

Trading Post

Perceptions Affecting Tree Valuation: An Analysis Of Recently Sold And Leased Properties In Tampa, Florida, Cody R. Winter

USF Tampa Graduate Theses and Dissertations

The urban forest is a structure that is fluid in both species composition and how it is integrated in our cities and suburban areas. Much like the fluidity in its structure, the urban forest provides ecosystem services and disservices in many forms. These services and disservices can often come in the form of temperature regulation, lower crime rates, and even higher property values. The latter, which is associated with the economic value of trees, is a part of the hedonic pricing literature which suggests that there is a disparity in the value associated with trees to house prices. With the …

What Controls Variation In Carbon Use Efficiency Among Amazonian Tropical Forests?, Christopher E. Doughty, Gregory R. Goldsmith, Nicolas Raab, Cecile A. J. Girardin, Filio Farfan-Amezquita, Walter Huaraca-Huasco, Javier E. Silva-Espejo, Alejandro Araujo-Murakami, Antonio C. L. Da Costa, Wanderley Rocha, David Galbraith, Patrick Meir, Dan B. Metcalfe, Yadvinder Malhi

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Why do some forests produce biomass more efficiently than others? Variations in Carbon Use Efficiency (CUE: total Net Primary Production (NPP)/ Gross Primary Production (GPP)) may be due to changes in wood residence time (Biomass/NPP_wood), temperature, or soil nutrient status. We tested these hypotheses in 14, one ha plots across Amazonian and Andean forests where we measured most key components of net primary production (NPP: wood, fine roots, and leaves) and autotrophic respiration (R_a; wood, rhizosphere, and leaf respiration). We found that lower fertility sites were less efficient at producing biomass and had higher rhizosphere respiration, …

Ecological Succession On Neotropical Landslides: Comparing Successional Patterns Of Four Different Aged Landslides In The Cerro Candelaria Reserve, Nace Keifer

Independent Study Project (ISP) Collection

Abstract In an area that is vulnerable to frequent landslides due to steep montane slopes and heavy rain falls it is important to understand how the ecosystem regenerates after it has been disturbed. This study examined ecological succession patterns by comparing the vegetation on four different aged landslides and the unharmed forest within the Cerro Candelaria Reserve, located in a cloud forest ecosystem in central Ecuador. One meter soil profiles and 5x5 meter vegetation quadrats were used to observe and characterize the habitats on the four individual landslides and unharmed forest. At each location, soil color, texture, and structure were …

Carbon Sequestration In The Cloud Forest: A Comparative Evaluation Of Aboveground Biomass Carbon Stock Potential In The Río Guajalito Reserve, Elli Mapstone

Independent Study Project (ISP) Collection

As carbon dioxide levels in the atmosphere continue to rise at a rapid rate, it is necessary to understand how forests can both contribute to CO₂ levels but also stop them from rising. Carbon sequestration levels in tropical montane cloud forests are a relatively understudied topic. Gathering carbon stock levels is the first step necessary to start a REDD+ project. Carbon stock levels can be studied on a global, regional or local level. This study used the University of Oxford/ Global Ecosystems Monitoring Network (GEM) methodology to examine carbon sequestration levels of aboveground biomass, specifically ground litter, large branches …

The Effects Of Climate On Radial Growth Of Disjunct Northern White Cedar (Thuja Occidentalis L.) In Virginia, Joshua A. Kincaid

Virginia Journal of Science

Understanding the geographic range and growth of species is essential for effective land management in a landscape affected by anthropogenic activity and climate change.  Climate change is expected to alter the distribution and growth of many tree species in eastern North America, including northern white cedar (Thuja occidentalis L.).  This research examined the effects of climate on radial growth of T. occidentalis in disjunct populations south of its continuous range margin in eastern North America.  A T. occidentalis tree-ring chronology was developed and examined for growth-climate interactions. Mean sensitivity of the T. occidentalis chronology was within the range of …

Phytochemical Screening And Determination Of Antibacterial, Anti-Tumorigenic And Dna Protection Ability Of Root Extracts Of Saussurea Lappa, Sughra Arif Minhas, Fida Muhammad Khan, Fakhar-I- Abbas, Abu Ul Hassan Faiz

Journal of Bioresource Management

Saussurea lappa is a traditionally well-known plant for its medicinal uses in different indigenous systems of medicine. It is widely used in the treatment of asthma, ulcer, stomach problems and inflammatory diseases. In current study the phytochemical screening of S. lappa showed the presence of sesquiterpenes, anthraquinones, lignans, alkaloids, flavonoids, glycosides and steroids. Antimicrobial potential of subject plant was also investigated against three bacterial strains and maximum antibacterial activity was observed by CEE against S. aureus, CAE against P. aeruginosa, while CME, CEE, EAE and PEE showed almost same significant activity against E. coli. The CME (1000 …

Timber Talk, Vol. 55, No. 3, September 2017

Timber Talk: Nebraska Forest Industry Newsletter

Lumber Market Reports: Northern, Southern, Appalachian

Hardwood Lumber Prices: Green, Kiln-Dried, Pallet Lumber, Ties (7x9)

Letter from the Editor: Governor’s “Red Tape Review” Offering opportunity for the Nebraska forest industry

Understanding Moisture Meters, By Brett Miller, National Hardwood Flooring Association - “Hardwood Floors” Magazine

Nebraska Forest Industry Spotlight: MTS Tree Service

Forestry Field Day Announcement: September 30, 2017 Horning State Farm - 2106 Horning Road Plattsmouth, Nebraska

Workshop Announcement: Forest Products Marketing, November 9, 2017 Buffalo County Extension Building Kearney, Nebraska

Trading Post

Timber Sales

Walking As Ontological Shifter: Thoughts In The Key Of Life, Bibi (Silvina) Calderaro

Dissertations, Theses, and Capstone Projects

With walking as ontological shifter I pursue an alternative to the dominant modernist episteme that offers either/or onto-epistemologies of opposition and their reifying engagements. I propose this type of walking is an intentional turning towards a set of radical positions that, as integrative aesthetic and therapeutic practice, brings multiplicity and synchronicity to experience and being in an expanded sociality. This practice facilitates the conditions of possibility for recurring points of contact between the interiority perceived as ‘body’ and the exteriority perceived as ‘world.’ While making evident the self’s at once incoherence with it-self, it opens to a space beyond the …

Evaluating Mine Soil Prepared By Scraper Pans For Herbaceous Plants And Pine Seedlings At An East Texas Lignite Surface Mine, Hannah Z. Angel

Electronic Theses and Dissertations

Since 1974, Luminant Mining Company, LLC (Luminant) has planted over 38.7 million trees on its reclaimed lignite surface mine operations in Texas. For decades, the use of improved reclamation techniques on Luminant’s mined lands have resulted in over 31,160 ha reclaimed to forests, wildlife habitat, and pastures with productivity levels similar to those found on unmined lands. The development of new reclamation methodologies offers opportunities to further improve productivity of planted trees at Luminant’s Martin Lake Oak Hill Mine in east Texas. The conventional haulback or ‘truck shovel’ reclamation method uses haul trucks for the selective transport and placement of …

Ecological And Organic Life Safety Concerns Of Hfo-1234yf, Alberni V. Ruiz

STAR Program Research Presentations

While at NOAA my research was directed by the inquiry of whether or not HFO-1234yf, a new compound being introduced into coolant system and replacing greenhouse gases HFC, is harmful to organic life. Using the computer program Matlab I was able to develop figures that represented the concentration of HFO-1234yf (HFO) in 12 different tower locations throughout the country. Comparing and contrasting concentrations of this HFO compound at each site led me to the question the possible harmful side effects this compound could bring to organic life due to the fact that concentration levels are increasing, with one factor being …

Quality And Yield Responses Of Seven Warm Season Forage Grasses To Partial Shading In A Simulated Silvopasture In East Texas, Jodi E. Hill

Electronic Theses and Dissertations

The goal of this project was to evaluate growth and nutritional characteristics of seven forages, including various warm season native grasses, grown under simulated partial shading (50%) typical of a loblolly pine silvopastoral system in East Texas. In order to meet the overall objective, slatted shade structures were constructed that simulated the quantity, quality, and overall light regime found beneath loblolly pine stands arranged for silvopasture. The forages selected for the study included ‘Tifton 9’ bahiagrass (Paspalum notatum), ‘Tifton 85’ bermudagrass (Cynodon dactylon), ‘Alamo’ switchgrass (Panicum virgatum), ‘Kaw’ Big Bluestem (Andropogon gerardii), ‘Americus’ …

The Effects Of Isoprene Emission From Native And Invasive Trees On Local Air Quality, Aarti P. Mistry

DePaul Discoveries

Biogenic volatile organic compounds (BVOC) are the second-most abundant reactive gasses emitted into the atmosphere by the biosphere. Isoprene is a BVOC produced by the process of photosynthesis from vegetation and is emitted from plant leaves. Isoprene is a hydrocarbon that combines with oxides of nitrogen in the atmosphere to create ozone in the troposphere, an air pollutant. Invasive trees alter ecosystems and affect native tree populations. Invasive tree species in the Chicagoland area are outcompeting native tree species and expanding rapidly. The effect of isoprene emissions on air quality is a well-researched area in the atmospheric science community, however, …

Telling Fire’S Story Through Narrative And Art, Stephen W. Barrett

Joint Fire Science Program Digests

Modern works by highly skilled narrative authors and artists have become increasingly useful for telling the story of wildland fire in the United States. Using unconventional means—and with partial funding by the Joint Fire Science Program—creative individuals have spawned some colorful and heartfelt messages that convey insightful information about wildland fire, climate, and other elements of nature to an increasingly receptive public. Recent narrative works by well-known authors, such as Stephen J. Pyne, and creative art pieces by well-established and emerging artists have helped depict fire in a new light to audiences that scientists may rarely reach. This issue of …

Timber Talk, Vol. 55, No. 2, June 2017

Timber Talk: Nebraska Forest Industry Newsletter

In This Issue

Lumber Market Reports 1

Hardwood Lumber Prices 2

Letter from the Editor: Nebraska Forest Products Association Can Nebraska’s beef industry be a model for the forest products industry? 3

American Wood Fibers--Yes Virginia, there is pine in Nebraska...And it has value! 4

Pine Ridge Sawmill Ready to Come Back to Life--Doescher Mill looking to rent/lease complete sawmill operation 5

Workshop Announcement--Portable Sawmill Operations and Lumber Drying 6

Nebraska Forest Service Awarded Biochar Grant 6

Nebraska Forest Industry Spotlight 7

Forest Products Specialists Tour Nebraska Facilities 7

Timber Sales 8