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

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 2017 Colby College

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 2017 University of Southern California and NBER

Invited Introduction To Jerec, Matthew Kahn

Journal of Environmental and Resource Economics at Colby

No abstract provided.


Welcome By The Editor, Nathan W. Chan 2017 Colby College

Welcome By The Editor, Nathan W. Chan

Journal of Environmental and Resource Economics at Colby

No abstract provided.


Forest Fire Risk Assessment Using Point Process Modeling & Monte Carlo Fire Simulation: A Case Study In Gyeongju, South Korea, Hyeyoung Woo 2017 University of Montana - Missoula

Forest Fire Risk Assessment Using Point Process Modeling & Monte Carlo Fire Simulation: A Case Study In Gyeongju, South Korea, Hyeyoung Woo

Hyeyoung Woo

Forest fire risk assessment becomes critical for developing forest and fire management strategies in Korea since the magnitude of damage from fires significantly increased over the past decades. Fire behavior probability is one of the major components in quantifying fire risk, and is often presented as burn probability. Burn probability estimation requires a proper estimation of fire occurrence probability because fire spread is largely influenced by ignition locations in addition to other environmental factors, such as weather, topography, and land covers.

The objective of this study is to assess forest fire risk over a large forested landscape in and around ...


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

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 ...


Getting The Most From Iowa's Forests: Linking Forest Understory Composition To Stream Water Quality And Enhancing Nutrient Capture In Forest Remnants In Agricultural Landscapes, Janette R. Thompson, Cathy Mabry McMullen, Timothy W. Stewart, Michaeleen E. Gerken Golay, Randall K. Kolka, Zachary Aaron Keninger 2017 Iowa State University

Getting The Most From Iowa's Forests: Linking Forest Understory Composition To Stream Water Quality And Enhancing Nutrient Capture In Forest Remnants In Agricultural Landscapes, Janette R. Thompson, Cathy Mabry Mcmullen, Timothy W. Stewart, Michaeleen E. Gerken Golay, Randall K. Kolka, Zachary Aaron Keninger

Timothy W. Stewart

Investigators worked to identify and disseminate information to enhance riparian forest understory function through actions that reduce contaminant transport to surface waters and enhance terrestrial and aquatic biodiversity.


Riparian Buffer Systems -- The Basics, Thomas M. Isenhart, Michael J. Tidman 2017 Iowa State University

Riparian Buffer Systems -- The Basics, Thomas M. Isenhart, Michael J. Tidman

Thomas M. Isenhart

If you have a stream running through your farm, you may be interested in learning about a conservation technique that has gained the respect of many Iowa landowners and conservation professionals. It is called a riparian buffer system and involves planting trees, shrubs, and native grasses along streams to prevent sediment and chemicals from entering creeks and rivers.


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 2017 Stephen F Austin State University

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 (Q. macrocarpa Michx.), and pecan (Carya ...


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

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

International Development, Community and Environment (IDCE)

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 2017 Stephen F. Austin State University

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 ...


Tennessee Valley Authority, Division Of Forestry (Sc 3100), Manuscripts & Folklife Archives 2017 Western Kentucky University

Tennessee Valley Authority, Division Of Forestry (Sc 3100), Manuscripts & Folklife Archives

MSS Finding Aids

Finding aid only for Manuscripts Small Collection 3100. Report on the forestry reconnaissance of the proposed Gilbertsville, Kentucky, reservoir area. Prepared by the Tennessee Valley Authority, Division of Forestry, November, 1936. Contains black and white photographs.


Timber Talk, Vol. 55, No. 1, March 2017, 2017 University of Nebraska - Lincoln

Timber Talk, Vol. 55, No. 1, March 2017

Timber Talk: Nebraska Forest Industry Newsletter

In This Issue

Lumber Market Reports 1

Hardwood Lumber Prices 2

Hardwood Lumber Market History 3

Bringing Innovative Timber Construction to Nebraska 4

Using Biochar to Reduce Cattle Emissions 5

Nebraska Forest Industry Spotlight 6

Timber Appraisals 6

Nebraska Wood Energy Team Conducting Statewide Analysis 7

Trading Post 8


An Artificial Neural Network For Real-Time Hardwood Lumber Grading, Edward Thomas 2017 USDA Forest Service

An Artificial Neural Network For Real-Time Hardwood Lumber Grading, Edward Thomas

USDA Forest Service / UNL Faculty Publications

Computerized grading of hardwood lumber according to NHLA rules would permit fast assessment of sawn lumber and the evaluation of potential edging and trimming operations to improve lumber value. More importantly, to enable optimization of the hardwood lumber sawing process, a fast means of evaluating the potential value of boards before they are sawn is necessary. As log and lumber scanning systems become prevalent and common, these needs become more pressing. From an automation perspective, the NHLA lumber grades are difficult to implement efficiently in a computer program. Exhaustive approaches that examine every potential cutting size and combination to determine ...


Interactions Between White-Tailed Deer Density And The Composition Of Forest Understories In The Northern United States, Matthew B. Russell, Christopher W. Woodall, Kevin M. Potter, Brian F. Walters, Grant M. Domke, Christopher M. Oswalt 2017 University of Minnesota

Interactions Between White-Tailed Deer Density And The Composition Of Forest Understories In The Northern United States, Matthew B. Russell, Christopher W. Woodall, Kevin M. Potter, Brian F. Walters, Grant M. Domke, Christopher M. Oswalt

USDA Forest Service / UNL Faculty Publications

Forest understories across the northern United States (US) are a complex of tree seedlings, endemic forbs, herbs, shrubs, and introduced plant species within a forest structure defined by tree and forest floor attributes. The substantial increase in white-tailed deer (Odocoileus virginianus Zimmerman) populations over the past decades has resulted in heavy browse pressure in many of these forests. To gain an objective assessment of the role of deer in forested ecosystems, a region-wide forest inventory across the northern US was examined in concert with white-tailed deer density information compiled at broad scales. Results indicate that deer density may be an ...


Residential Building Energy Conservation And Avoided Power Plant Emissions By Urban And Community Trees In The United States, David J. Nowak, Nathaniel Appleton, Alexis Ellis, Eric Greenfield 2017 USDA Forest Service

Residential Building Energy Conservation And Avoided Power Plant Emissions By Urban And Community Trees In The United States, David J. Nowak, Nathaniel Appleton, Alexis Ellis, Eric Greenfield

USDA Forest Service / UNL Faculty Publications

Urban trees and forests alter building energy use and associated emissions from power plants by shading buildings, cooling air temperatures and altering wind speeds around buildings. Field data on urban trees were combined with local urban/community tree and land cover maps, modeling of tree effects on building energy use and pollutant emissions, and state energy and pollutant costs to estimate tree effects on building energy use and associated pollutant emissions at the state to national level in the conterminous United States. Results reveal that trees and forests in urban/community areas in the conterminous United States annually reduce electricity ...


Establishment Of American Chestnuts On Surface Mined Lands In Appalachian Coalfields Region, Michael E. French 2017 University of Kentucky

Establishment Of American Chestnuts On Surface Mined Lands In Appalachian Coalfields Region, Michael E. French

Theses and Dissertations--Forestry

American chestnut (Castanea dentata (Marsh.) Borkh.) was an dominant hardwood throughout eastern North America until the introduction of an exotic fungus (Cryphonectria parasitica (Murr.) Barr) in the early 20th century devastated American chestnut populations. Chestnuts that have been bred for blight resistance have recently become available for testing. Due to the overlap of American chestnut’s natural range and the Appalachian coalfields region, the potential establishment of founder populations of blight-resistant chestnuts on reclaimed coal surface mines has recently gained attention. This work examined chestnut establishment on a surface mine in eastern Kentucky to assess factors controlling early survival ...


Managing Upland Oak Forests With Disturbance And The Implications For Non-Native Species Invasions, Devin E. Black 2017 University of Kentucky

Managing Upland Oak Forests With Disturbance And The Implications For Non-Native Species Invasions, Devin E. Black

Theses and Dissertations--Forestry

Natural and anthropogenic disturbances have influenced forest stand structure and affected species compositions within forests for millennia. Disturbances such as fire, severe weather events, and forest management practices may result in significantly reduced tree biomass. Thus, these disturbances may lower canopy closure and stem density in support of forest management goals, such as open oak woodland restoration, or promote an increase in species richness within the forest understory. However, these types of disturbance may also produce the unwanted consequence of opening pathways for the invasion of non-native species. Once established, these non-native species may threaten native plant communities and biodiversity ...


Vegetation Response To Repeated Prescribed Burning And Varied Wildfire Severity In Upland Forests On The Cumberland Plateau, Kentucky, Zachary W. Poynter 2017 University of Kentucky

Vegetation Response To Repeated Prescribed Burning And Varied Wildfire Severity In Upland Forests On The Cumberland Plateau, Kentucky, Zachary W. Poynter

Theses and Dissertations--Forestry

As a result of decades of fire suppression, oaks (Quercus L.) and other disturbance-dependent tree species are experiencing widespread regeneration failure. Today, fire takes the form of relatively low to moderate intensity prescribed fire, used to restore fire adapted ecosystems, and wildfires which often vary in severity. I investigated long-term changes to forest structure and composition in response to repeated prescribed burning followed by an extended period of no fire. Burning reduced total basal area, midstory stem density and sapling stem density. However, the fire-free interval significantly increased sapling layer stem densities of oaks and competitor species. This research shows ...


Invasion Dynamics Of The Exotic Liana Euonymus Fortunei (Turcz.) Hand.-Mazz. (Wintercreeper), Todd J. Rounsaville 2017 University of Kentucky

Invasion Dynamics Of The Exotic Liana Euonymus Fortunei (Turcz.) Hand.-Mazz. (Wintercreeper), Todd J. Rounsaville

Theses and Dissertations--Biology

Elevated atmospheric CO2 has been implicated as a driver of increased liana abundance worldwide. Known as disturbance creators and beneficiaries, lianas possess the potential to significantly influence forest ecosystems. I investigated the early-invasion dynamics of Euonymus fortunei (wintercreeper), an evergreen liana that is invading forests in eastern North America, disrupting native plant communities and ecosystem functions.

Wintercreeper is widely cultivated as an ornamental groundcover, frequently invading natural areas via asexual stem growth. Invasion of remote natural areas is dependent upon seed transport and may occur less frequently. I examined the mechanisms of seed dormancy by conducting a ‘move-along’ experiment ...


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