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Articles 1 - 30 of 344
Full-Text Articles in Life Sciences
Smokejumper Obituary: Anderson, James W. (Missoula 1958), National Smokejumper Association
Smokejumper Obituary: Anderson, James W. (Missoula 1958), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Hobbs, Gene W. (Idaho City 1961), National Smokejumper Association
Smokejumper Obituary: Hobbs, Gene W. (Idaho City 1961), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Forest Floor And Mineral Soil Respiration Rates In A Northern Minnesota Red Pine Chronosequence, Matthew Powers, Randall K Kolka, John Bradford, Brian Palik, Martin F. Jurgensen
Forest Floor And Mineral Soil Respiration Rates In A Northern Minnesota Red Pine Chronosequence, Matthew Powers, Randall K Kolka, John Bradford, Brian Palik, Martin F. Jurgensen
Michigan Tech Publications
We measured total soil CO2 efflux (RS) and efflux from the forest floor layers (RFF) in red pine (Pinus resinosa Ait.) stands of different ages to examine relationships between stand age and belowground C cycling. Soil temperature and RS were often lower in a 31-year-old stand (Y31) than in 9-year-old (Y9), 61-year-old (Y61), or 123-year-old (Y123) stands. This pattern was most apparent during warm summer months, but there were no consistent differences in RFF among different-aged stands. RFF represented an average of 4–13% of total soil respiration, and forest floor removal increased …
Remote Sensing Of Forests Using Discrete Return Airborne Lidar, Hamid Hamraz, Marco A. Contreras
Remote Sensing Of Forests Using Discrete Return Airborne Lidar, Hamid Hamraz, Marco A. Contreras
Forestry and Natural Resources Faculty Publications
Airborne discrete return light detection and ranging (LiDAR) point clouds covering forested areas can be processed to segment individual trees and retrieve their morphological attributes. Segmenting individual trees in natural deciduous forests, however, remained a challenge because of the complex and multi-layered canopy. In this chapter, we present (i) a robust segmentation method that avoids a priori assumptions about the canopy structure, (ii) a vertical canopy stratification procedure that improves segmentation of understory trees, (iii) an occlusion model for estimating the point density of each canopy stratum, and (iv) a distributed computing approach for efficient processing at the forest level. …
Assessment Of Vegetation Response To Wildfire At Bandelier National Monument, New Mexico: Case Study Of The Las Conchas Fire, Gladys Valentin-Gonzalez
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 …
Monitoring Soft-Mast Production In Pine Woodland Restoration Areas On The Ouachita National Forest, Tamara B. Wood
Monitoring Soft-Mast Production In Pine Woodland Restoration Areas On The Ouachita National Forest, Tamara B. Wood
Electronic Theses and Dissertations
The use of prescribed fire is integral to the restoration of open woodland habitats in the southeast, including shortleaf pine (Pinus echinata) woodlands in the Ouachita Mountains. Mature pine habitats maintained with recurrent disturbances have an open understory with a rich floristic diversity that provides quality habitat for many wildlife species, including the endemic and endangered red-cockaded woodpecker (Picoides borealis). Fire has many potential benefits for wildlife; however, the effects of fire on several important woody soft-mast producing species are not fully understood. Soft-mast quantity and quality is a key component in determining year-round habitat quality …
Long-Term Sustainability Of Northern Mixedwood Management: Spatial And Temporal Aspects Of Forest Productivity, Bethany L. Munoz
Long-Term Sustainability Of Northern Mixedwood Management: Spatial And Temporal Aspects Of Forest Productivity, Bethany L. Munoz
Electronic Theses and Dissertations
Natural disturbances of moderate severity are common in northern temperate forests in Maine, USA. Given estimated return intervals of 575-1000 years for severe windstorms and 385-1200 years for severe fire events, few opportunities arise to evaluate high severity disturbances in northern mixedwood or northern conifer forests. This research evaluated 50-year results of clearcutting with whole-tree harvesting (WTH), stem-only harvesting (SOH), and stem-only harvesting with prescribed burning (SOHB) on growing stock, composition, and relationships among foliar and soil nutrient concentrations. At the other end of the disturbance spectrum, this research also investigated 60-year results of single-tree selection with a 10-year cutting …
Dna Barcoding Of Quercus Falcata, Quercus Palustris, Quercus Rubra, And Their Hybrids Using Rbcl, Matk, And Ycf1, Mckinzie Johnson, Tim Trott
Dna Barcoding Of Quercus Falcata, Quercus Palustris, Quercus Rubra, And Their Hybrids Using Rbcl, Matk, And Ycf1, Mckinzie Johnson, Tim Trott
Research in Biology
No abstract provided.
Smokejumper Obituary: Dickey, Leas D. (Redding 1961), National Smokejumper Association
Smokejumper Obituary: Dickey, Leas D. (Redding 1961), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Beavers, Clarence H. (Pendleton 1945), National Smokejumper Association
Smokejumper Obituary: Beavers, Clarence H. (Pendleton 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Timber Talk, Vol. 55, No. 4, December 2017
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
Forest Resources For Bioenergy, Gerry Solano Avila
Forest Resources For Bioenergy, Gerry Solano Avila
Doctoral Dissertations
The overall objective of this dissertation is to evaluate forest resources biomass availability for the production of bioenergy. Chapter II provides measures of the impact that the road sustainability criteria have on the supply of feedstock for forest products and bioenergy. A linear cost minimization programming is used in estimating forest biomass supply curves. Chapter III provides estimates on the changes in US timberland acreages overtime and the ability of timberland to meet conventional timber products and woody biomass demand within the conterminous United States. Chapter IV utilizes the Biofuels Facility Location Analysis Modeling Endeavor (BioFLAME), a Geographic Information System …
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2015, Leah English, Jennie Popp, Wayne Miller
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2015, Leah English, Jennie Popp, Wayne Miller
Research Reports and Research Bulletins
Agriculture and associated agricultural activities are major contributors to the Arkansas economy. Agriculture is defined as the sum of agricultural production and processing activities, unless otherwise specified, and includes crop and animal production and processing, agricultural support industries, forestry and forest products, and textile goods. Agriculture contributes to the economy through direct agricultural production and value-added processing, and also leads to economic activity in other parts of the economy. This report is the tenth in a series of reports examining agriculture’s economic contribution to the Arkansas economy. The total economic contribution of agriculture (direct, indirect, and induced effects) on value …
Papermaking Factors Affecting Lateral Web Position During Commercial Heat Set Web Offset Printing, George W. Shields
Papermaking Factors Affecting Lateral Web Position During Commercial Heat Set Web Offset Printing, George W. Shields
Masters Theses
The interaction of water with paper plays a role in web handling characteristics during commercial heat set web offset printing. Water absorption leads to lower web tension for a given strain.
This research investigates paper properties and their role in preventing lateral web movement from cross machine air flows in the drying section during normal printing operations. Tensile properties of sheets are measured at various moisture contents and then used to determine the equilibrium stress-strain relationship for papers at moisture contents typical of heat set web offset printing. Permeability, fiber orientation and tensile stiffness are evaluated against lateral web movement …
National Smokejumper Assocation Trail Maintenance Annual Report For 2017, National Smokejumper Association Trails Committee
National Smokejumper Assocation Trail Maintenance Annual Report For 2017, National Smokejumper Association Trails Committee
Trails Reports
The Trails Maintenance Program Annual Reports compiled by the National Smokejumper Association Trails Committee summarizes the activities of the Trails Program. The members of the program also go by the title Trails Restoration and Maintenance Project Specialists (TRAMPS). The contents of the 2011 report include: Volunteers of the year; Fred Cooper; Steve Carlson; Admin information; BWCAW; Monture GS; Wild Flower Trail; Big Pryor Mtn. Trail; Reese Cabin Firewood; Horse Camp Fishlake; Dixie; Rocky Mtn. NP; Sawtooth; Stanley Basin; Rio Hondo Cabin; Lewis & Clark; Mann Gulch; Lassen NP; Rio Puerco Trail; Antone Cabin; West Fork Cabin; Yellow Jacket Lake; Santa …
Greening The Gateway Cities: Summer Internship With The Clark University Human Environment Regional Observatory (Hero) And Massachusetts Department Of Conservation And Recreation (Dcr), Zhiwen Zhu
International Development, Community and Environment (IDCE)
This report provides a detailed account of my internship experience with the Clark University Human-Environment Regional Observatory (HERO) and Massachusetts Department of Conservation and Recreation (DCR) in the summer of 2017. This internship concerns the urban tree health assessment in three ‘Greening the Gateway’ cities in Massachusetts. During the internship, I conducted tree survey field work, database management, mapping, tree survey data analysis and urban tree plantation benefits microclimate simulation. During the internship I worked with the professors and students at Clark University and University of Massachusetts, Amherst, and the staff from Department of Conservation and Recreation (DCR), Worcester Tree …
Oystershell Scale Impacts And Mitigation Options On The Kaibab And Coconino Nf’S, Amanda M. Grady
Oystershell Scale Impacts And Mitigation Options On The Kaibab And Coconino Nf’S, Amanda M. Grady
Aspen Bibliography
This report documents a site visit to evaluate aspen stands experiencing oystershell scale damage on the Kaibab and Coconino National Forest’s. The site visit was requested by Kaibab NF, foresters including; Josh Giles, Jessi Outzs, Michael Sedgeman, Woody Rokala and Coconino Silviculturist, Mark Nabel. On November 19, 2016, Amanda Grady accompanied the individuals listed above, to evaluate stand conditions within three aspen exclosures. Two were located on the Williams Ranger District, Kaibab NF in the vicinity of Spring Valley. The third exclosure was located on the Flagstaff RD, Coconino NF and accessed from HWY 89-A via the Pump House Wash …
Accounting For Soil Inorganic Carbon In The Ecosystem Services Framework For United Nations Sustainable Development Goals, Garth Raymond Groshans
Accounting For Soil Inorganic Carbon In The Ecosystem Services Framework For United Nations Sustainable Development Goals, Garth Raymond Groshans
All Theses
Soil inorganic carbon (SIC) is currently not included in the list of key soil properties related to ecosystem services (e.g., provisioning, regulating, cultural, and supporting services). Soil inorganic carbon is a dynamic key soil property used in soil classification, taxonomy and fertility, therefore its inclusion in the framework of ecosystem services is important. With soils rapidly changing due to human use and climate change, the soil ecosystem services framework should not include only soil organic carbon (SOC), but SIC as well since it is of global importance to soil fertility and the long-term carbon cycle, especially in semiarid and arid …
Fungi Of Forests: Examining The Diversity Of Root-Associated Fungi And Their Responses To Acid Deposition, Donald Jay Nelsen
Fungi Of Forests: Examining The Diversity Of Root-Associated Fungi And Their Responses To Acid Deposition, Donald Jay Nelsen
Graduate Theses and Dissertations
Global importance of forests is difficult to overestimate, given their role in oxygen production, ecological roles in nutrient cycling and supporting numerous living species, and economic value for industry and as recreational zones. Fitness of the forest-forming trees strongly depends on microbial communities associated with tree roots. In particular, fungi impact tree fitness: mycorrhizal species provide water and nutrients for the trees in exchange for C, endophytic fungi play key roles in host defense against pathogenic organisms, and saprotrophic fungi decompose dead organic matter and facilitate nutrient cycling. In addition, pathogenic fungal species strongly affect forest fitness. Despite their importance, …
Population Dynamics Of Ouachita Dusky Salamanders (Desmognathus Brimleyorum) In A Managed Forest Landscape, Kelly Marie Halloran
Population Dynamics Of Ouachita Dusky Salamanders (Desmognathus Brimleyorum) In A Managed Forest Landscape, Kelly Marie Halloran
Graduate Theses and Dissertations
With anthropogenic alteration of landscapes increasing world-wide, managed forests are increasingly important as providers of ecosystem services including habitat for numerous wildlife species. It is crucial to maintain a balance between timber production and conservation of biodiversity on managed landscapes. Salamander populations can play key roles in the function and diversity of temperate forest ecosystems. Several studies have reported negative effects of forestry on terrestrial plethodontid salamanders, but less research has focused on stream-dwelling species, evaluated mechanisms driving observed shifts in abundance, or described the dynamics of populations residing in managed forests. Using a Before-After-Control-Impact design, we examined the effects …
A Risk-Based Method For Estimating The Carbon Sequestration Budget For A Mixed Hardwood Forest, Erin Cooper
A Risk-Based Method For Estimating The Carbon Sequestration Budget For A Mixed Hardwood Forest, Erin Cooper
Chemical Engineering Undergraduate Honors Theses
Carbon Dioxide (CO2) levels in the atmosphere have risen from approximately 310 ppm in the 1950’s to over 400 ppm as of 2015. This rise in CO2 has likely resulted in the observed warming trend of the earth’s atmosphere in the same time frame, causing significant concern in the scientific community. Several mitigation strategies have arisen to combat the upward trend of CO2 emissions in recent decades, among them being carbon sequestration- the process of capturing CO2 from the atmosphere and holding it for an extended period of time. This study used the U.S. Forest …
The New Environmental Law: Forest Certification, Errol E. Meidinger
The New Environmental Law: Forest Certification, Errol E. Meidinger
Errol Meidinger
This paper argues that the rapidly expanding practice of forest certification, together with similar developments in other sectors, is creating a new template for environmental law. Nongovernmental organizations and some industry actors are establishing binding regulatory standards, systems for monitoring compliance, sanctions for non-compliance, and, when things work well, methods for assessment and revision. It locates these developments as a part of “phase 3” of environmental law, which also involves a proliferation of other initiatives beyond traditional regulation. Finally, it offers a preliminary discussion of the efficacy, adaptability, coherence, and legitimacy of the emergent system.
The Fundamentals Of Forest Certification, Errol Meidinger, Christopher Elliott, Gerhard Oesten
The Fundamentals Of Forest Certification, Errol Meidinger, Christopher Elliott, Gerhard Oesten
Errol Meidinger
Published in Social and Political Dimensions of Forest Certification, Errol Meidinger, Christopher Elliott & Gerhard Oesten, eds.
Forest Certification As A Global Civil Society Regulatory Institution, Errol E. Meidinger
Forest Certification As A Global Civil Society Regulatory Institution, Errol E. Meidinger
Errol Meidinger
Published in Social and Political Dimensions of Forest Certification, Errol Meidinger, Christopher Elliott & Gerhard Oesten, eds.
Forest Certification As Environmental Law Making By Global Civil Society, Errol E. Meidinger
Forest Certification As Environmental Law Making By Global Civil Society, Errol E. Meidinger
Errol Meidinger
Published in Social and Political Dimensions of Forest Certification, Errol Meidinger, Christopher Elliott & Gerhard Oesten, eds.
Estimating Wildlife Biodiversity Of Pine Plantation Edges Of Contrasting Rotational Stages: A Case Study, Joshua Perry Harris
Estimating Wildlife Biodiversity Of Pine Plantation Edges Of Contrasting Rotational Stages: A Case Study, Joshua Perry Harris
Electronic Theses and Dissertations
ESTIMATING WILDLIFE BIODIVERSITY OF PINE PLANTATION EDGES OF CONTRASTING ROTATIONAL STAGES: A CASE STUDY
By: Joshua Harris, Dr. Daniel Scognamillo, Dr. Gary Kronrad, and Dr. Jeremy Stovall
Abstract
Wildlife biodiversity was estimated amongst three loblolly pine (Pinus taeda) intra-plantation edge types of contrasting rotational phases in a two-year case study. Three structurally varied rotational phases that occur throughout plantation rotations combine to make three different edges: A= pre-thinned - post-thinned, B= pre-thinned - pre-clearcut, and C= post-thinned - pre-clearcut. For two summer seasons (May-August 2015-2016), invertebrates, birds, medium mammals, and small mammals were sampled in each edge type. …
Quantitative Trait Locus Mapping Of Populus Bark Features And Stem Diameter, Roba Bdeir, Wellington Muchero, Yordan Yordanov, Gerald Tuskan, Victor B. Busov, Oliver Gailing
Quantitative Trait Locus Mapping Of Populus Bark Features And Stem Diameter, Roba Bdeir, Wellington Muchero, Yordan Yordanov, Gerald Tuskan, Victor B. Busov, Oliver Gailing
Michigan Tech Publications
Background
Bark plays important roles in photosynthate transport and storage, along with physical and chemical protection. Bark texture varies extensively among species, from smooth to fissured to deeply furrowed, but its genetic control is unknown. This study sought to determine the main genomic regions associated with natural variation in bark features and stem diameter. Quantitative trait loci (QTL) were mapped using an interspecific pseudo-backcross pedigree (Populus trichocarpa x P. deltoides and P. deltoides) for bark texture, bark thickness and diameter collected across three years, two sites and three biological replicates per site.
Results
QTL specific to bark texture …
Estimating The Range Shift And Harvesting Intensity Of Junipers In Bhutan (Eastern Himalaya), Rinchen Namgay
Estimating The Range Shift And Harvesting Intensity Of Junipers In Bhutan (Eastern Himalaya), Rinchen Namgay
Theses
The authors of more than 97% of the scientific publications on climate change agree that global temperature has increased in the last six decades and is caused by human beings via emission of greenhouse gases in the atmosphere. This phenomenon has altered natural ecosystem functions, causing many species to shift to a more suitable habitat. Throughout the world, because of recent climate warming, many forms of range shift associated with climate warming has occurred. While animals can move as warming happens, plants being stationary organisms cannot move, so the difference in the distribution of different plant life stages is an …
Sampling Effort And Uncertainty In Leaf Litterfall Mass And Nutrient Flux In Northern Hardwood Forests, Yang Yang, Ruth D. Yanai, Craig R. See, Mary A. Arthur
Sampling Effort And Uncertainty In Leaf Litterfall Mass And Nutrient Flux In Northern Hardwood Forests, Yang Yang, Ruth D. Yanai, Craig R. See, Mary A. Arthur
Forestry and Natural Resources Faculty Publications
Designs for litterfall sampling can be improved by understanding the sources of uncertainty in litterfall mass and nutrient concentration. We compared the coefficient of variation of leaf litterfall mass and nutrient concentrations (nitrogen, phosphorus, calcium, magnesium, and potassium) at different spatial scales and across years for six northern hardwood species from 23 stands in the White Mountains of New Hampshire, USA. Stands with steeper slopes (P = 0.01), higher elevations (P = 0.05), and more westerly aspect (P = 0.002) had higher interannual variation in litter mass, probably due to a litter trap design that allowed litter …
Smokejumper Obituary: Rowney, Roscoe B. (Redding 1975), National Smokejumper Association
Smokejumper Obituary: Rowney, Roscoe B. (Redding 1975), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.