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Articles 1501 - 1530 of 4004

Full-Text Articles in Forest Management

Reconstruction Of Piñon-Juniper Forest Structure To Examine Historic Wildlife Habitat Characteristics In The Davis Mountains, Usa, Brian P. Oswald, John R. Lanham, James C. Kroll, Mohammed M. Bataineh, Yanli Zhang Aug 2017

Reconstruction Of Piñon-Juniper Forest Structure To Examine Historic Wildlife Habitat Characteristics In The Davis Mountains, Usa, Brian P. Oswald, John R. Lanham, James C. Kroll, Mohammed M. Bataineh, Yanli Zhang

Faculty Publications

Changes in piñon-juniper (Pinus spp., Juniperus spp.) communities across the southwestern United States have often decreased ecological diversity of the understory and increases of exotic species. Reconstructing age and establishment patterns provides essential understanding to guide treatments and management for anthropogenically-altered forests. The goal of this study was to determine how patterns of piñon and juniper growth in the Davis Mountains, Texas, varied over time and how this pattern influenced wildlife habitat of several indicator species. Establishment patterns and basal area growth progression were identified, canopy cover estimates regressed from pre-developed canopy regression equations to re-construct historic forest stand …


Smokejumper Obituary: Pohowsky, Ian R. (Missoula 2011), National Smokejumper Association Aug 2017

Smokejumper Obituary: Pohowsky, Ian R. (Missoula 2011), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Crowe, Robert A. "Bob" (Missoula 1946), National Smokejumper Association Aug 2017

Smokejumper Obituary: Crowe, Robert A. "Bob" (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Gunther, Ronald E. (Idaho City 1954), National Smokejumper Association Aug 2017

Smokejumper Obituary: Gunther, Ronald E. (Idaho City 1954), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Sweaney, James N. (Missoula 1967), National Smokejumper Association Aug 2017

Smokejumper Obituary: Sweaney, James N. (Missoula 1967), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Ecological And Organic Life Safety Concerns Of Hfo-1234yf, Alberni V. Ruiz Aug 2017

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 …


Comparison Of Understory Chemical And Mechanical Treatments To Promote Regeneration Of Desirable Forestland Species, Rebecca Rachael Tyler Aug 2017

Comparison Of Understory Chemical And Mechanical Treatments To Promote Regeneration Of Desirable Forestland Species, Rebecca Rachael Tyler

Graduate Theses/Dissertations

Invasive woody plants and trees can have a negative impact on desired tree regeneration in the understory of forest stands, and forage density in grassland sites. An assessment of chemical and mechanical treatments on woody plants in the understory of forestland and in grassland is needed. Two experiments were set up in two forest stands and in two grassland/forest edge sites, with two treatment times during the growing season in the first year of the study. On the forestland sites, chemical and mechanical treatments were applied on undesired woody plants to see if they effect the regeneration of desired tree …


Smokejumper Obituary: Anderson, Steven Rood (Missoula 1963), National Smokejumper Association Jul 2017

Smokejumper Obituary: Anderson, Steven Rood (Missoula 1963), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Laws, David G. (Redmond 1966), National Smokejumper Association Jul 2017

Smokejumper Obituary: Laws, David G. (Redmond 1966), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Egan, Terry (Cave Junction 1965), National Smokejumper Association Jul 2017

Smokejumper Obituary: Egan, Terry (Cave Junction 1965), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


The Impact Weather Has On Nyc Citi Bike Share Company Activity, Mark Martinez Jul 2017

The Impact Weather Has On Nyc Citi Bike Share Company Activity, Mark Martinez

Journal of Environmental and Resource Economics at Colby

This paper seeks to figure out the effect weather has on individuals’ behavior. A more focused approach to determining this effect is seeing how different weather conditions ranging from the temperature, the precipitation, the amount of inches of snowfall and the wind speed effect the ridership of Citi Bikes throughout all four seasons. The approach of this research paper is using data from the National Climatic Data Center that focuses in on the weather found in Manhattan, New York and correlates each of the weather conditions to the total number of trips per day that is provided by the Citi …


The Effects From Public Transportation On Property Values: A Closer Look At Scituate, Hanover, And Norwell, Massachusetts, Alexandra Taylor Perticone, Christine S. Coveney Jul 2017

The Effects From Public Transportation On Property Values: A Closer Look At Scituate, Hanover, And Norwell, Massachusetts, Alexandra Taylor Perticone, Christine S. Coveney

Journal of Environmental and Resource Economics at Colby

Prior studies have expressed the value of location in real estate, but more recent studies have explored the influence that public transportation has had on housing prices. Access to public transportation is understood to increase the value of homes. Easier access to public transportation allows for shorter and more convenient commutes into or within cities. However, other studies have found that proximity to public transportation can also have adverse effects on property values. This paper investigates whether the implementation of the Greenbush Commuter line in Massachusetts in October 2007 increased the housing prices in Scituate, Ma--the furthest town from the …


Invited Introduction To Jerec, Matthew Kahn Jul 2017

Invited Introduction To Jerec, Matthew Kahn

Journal of Environmental and Resource Economics at Colby

No abstract provided.


Welcome By The Editor, Nathan W. Chan Jul 2017

Welcome By The Editor, Nathan W. Chan

Journal of Environmental and Resource Economics at Colby

No abstract provided.


The Effects Of Isoprene Emission From Native And Invasive Trees On Local Air Quality, Aarti P. Mistry Jul 2017

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 Jul 2017

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 …


Smokejumper Obituary: Maggio, Joel Louis "Joey" (Redding 2009), National Smokejumper Association Jun 2017

Smokejumper Obituary: Maggio, Joel Louis "Joey" (Redding 2009), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Wagner, Paul E. (North Cascades 1952), National Smokejumper Association Jun 2017

Smokejumper Obituary: Wagner, Paul E. (North Cascades 1952), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


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

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


Smokejumper Obituary: Buhaly, Joseph (North Cascades 1947), National Smokejumper Association May 2017

Smokejumper Obituary: Buhaly, Joseph (North Cascades 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Scheuch, Brian C. (Missoula 1955), National Smokejumper Association May 2017

Smokejumper Obituary: Scheuch, Brian C. (Missoula 1955), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Ricketts, Gary (Redmond 1972), National Smokejumper Association May 2017

Smokejumper Obituary: Ricketts, Gary (Redmond 1972), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Richcreek, Roger W. (Redmond 1966), National Smokejumper Association May 2017

Smokejumper Obituary: Richcreek, Roger W. (Redmond 1966), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Egger, Bruce Emil (Mccall 1946), National Smokejumper Association May 2017

Smokejumper Obituary: Egger, Bruce Emil (Mccall 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Betty, Howard W. (North Cascades 1948), National Smokejumper Association May 2017

Smokejumper Obituary: Betty, Howard W. (North Cascades 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Smokejumper Obituary: Hoffman, John O. (Missoula 1955), National Smokejumper Association May 2017

Smokejumper Obituary: Hoffman, John O. (Missoula 1955), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.


Influence Of Prescribed Burning On Upland Soil Properties In Mark Twain National Forest, Southeast Missouri Ozarks, Megan Lynn Hente May 2017

Influence Of Prescribed Burning On Upland Soil Properties In Mark Twain National Forest, Southeast Missouri Ozarks, Megan Lynn Hente

Graduate Theses/Dissertations

In the Mark Twain National forest there is a collaborative effort to restore parts of the forest to its original shortleaf pine-oak woodland areas by using a combination of silviculture and prescribed fire. The purpose of this project is to assess the effects of prescribed burning on upland forest and soil physical properties that influence erosion processes across a gradient of burned sites of different ages and unburned sites. A combination of geospatial, field, laboratory, statistical (one-way ANOVA) and modeling (USLE) methods were used to assess the effects of prescribed burns on forest and soil characteristics in Big Barren Creek …


Herbivory Impacts On Growth And Survival Of Seedlings In Bottomland Hardwood Forest Restoration Sites In The Post Oak Savannah And Blackland Prairie Ecoregions Of Texas, Usa, Ryan J. Jacques May 2017

Herbivory Impacts On Growth And Survival Of Seedlings In Bottomland Hardwood Forest Restoration Sites In The Post Oak Savannah And Blackland Prairie Ecoregions Of Texas, Usa, Ryan J. Jacques

Electronic Theses and Dissertations

Interest in bottomland hardwood forests (BLHW) ecology and restoration has increased over the past 40 years. These communities aid in water quality improvement, streambank stabilization, and urban expansion mitigation. They also provide important habitat for many species of wildlife. Since the majority of remaining BLHW are degraded due to land fragmentation, restoration attempts are becoming commonplace within the Western Gulf Coastal Plain. However, restoration success has been mixed, with managers observing survival rates of <15% for desirable species due to various factors. Over two growing seasons, I investigated multiple factors that have potential to limit BLHW restoration success in East Texas. Specifically, I tested the impacts of herbivory by white-tailed deer (Odocoileus virginianus) and feral swine (Sus scrofa) on Nuttall oak (Quercus texana Buckley), Shumard oak (Q. shumardii Buckley), bur oak ( …


Seeing Community Through The Trees: Characterizing Resident Response To Urban-Tree Planting Initiatives, Eli Goldman May 2017

Seeing Community Through The Trees: Characterizing Resident Response To Urban-Tree Planting Initiatives, Eli Goldman

Sustainability and Social Justice

Urban tree planting initiatives have become common across cities in the United States. In order to advocate for sustainable urban forests, managers of urban planting initiatives must adopt a strong community framework, which includes community values in reforestation efforts. Clark University researchers conducted interviews and surveys with residents in six central Massachusetts cities and towns to assess why residents value urban trees and to characterize public response to reforestation efforts. Results indicate residents had positive experiences with tree planting programs, are most likely to value urban trees for aesthetic reasons, and commonly associate change in neighborhood character with Asian Longhorned …


Accuracy Assessment On Drone Measured Heights At Different Height Levels, David L. Kulhavy, I-Kuai Hung, Daniel Unger, Yanli Zhang Apr 2017

Accuracy Assessment On Drone Measured Heights At Different Height Levels, David L. Kulhavy, I-Kuai Hung, Daniel Unger, Yanli Zhang

Symposium on Arts and Research

The advancement in unmanned aerial system (UAS) technology has made it possible to attain an aerial unit, commonly known as a drone, at an affordable price with increasing precision and accuracy in positioning and photographing. While aerial photography is the most common use of a drone, many of the models available in the market are also capable of measuring height, the height of the drone above ground, or the altitude above the mean sea level. On board a drone, a barometer is used to control the flight height by detecting the atmospheric pressure change; while a GPS receiver is mainly …