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Community Science And The Ecological Merits Of Backyard Habitat Patches And Adjacent Green-Spaces For Urban Avian Species, Kristen S. Gulick, Nikkie West, Marion Dresner 2017 Portland State University

Community Science And The Ecological Merits Of Backyard Habitat Patches And Adjacent Green-Spaces For Urban Avian Species, Kristen S. Gulick, Nikkie West, Marion Dresner

Marion Dresner

In what ways do small-scale urban backyards contribute to local bird abundance and biodiversity? In what ways might these yards serve as an ‘extension’ of neighboring native forest areas? This project investigates the contribution that a group of backyards, certified through the Backyard Habitat Certification Program, have in the suburb of Hillsdale, Oregon, which is adjacent to the natural area of Keller Woodland. Backyard owners functioning as citizen or community scientists assisted with conducting residential bird point-counts once a week in each backyard and the natural area. Counts were done for a total of 8 weeks during nesting season to ...


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 ...


Electricity Demand Due To Policy Change In The U.K., Kevin W. Doherty 2017 Colby College

Electricity Demand Due To Policy Change In The U.K., Kevin W. Doherty

Journal of Environmental and Resource Economics at Colby

This paper examines United Kingdom Electricity Demand with regards to the Climate Change Act, which was enacted in November of 2008. Through actual demand data obtained from Nationalgrid, a U.K. based gas and electric utility company, this paper seeks to find out if the Climate Change Act has started to achieve its goal of reducing carbon emissions by looking at trends of electricity demand. Burning fossil fuels to produce electricity is a major contributor to global warming in the U.K. and policies enacted do not always live up to their ultimate goals. This paper tests how on track ...


The Demographic Drivers Of California’S Environmental Voting, Lukas Yasuda 2017 Colby College

The Demographic Drivers Of California’S Environmental Voting, Lukas Yasuda

Journal of Environmental and Resource Economics at Colby

This study examines the demographics of California’s 53 congressional districts and the relationship with the voting patterns on three environmentally focused propositions in the 2008 and 2010 elections. Previous literature on the topic is mixed as some studies suggest that select attributes are found among environmental voting centers, yet other research describes the relationship as more complex than simple characteristics. Previous literature on the topic is mixed, with some studies suggesting that select attributes are found among environmental vote support hubs, whereas alternative research suggests the problem is more complex than simple characteristics. I collected data on income, education ...


How Individuals React To Smog Alerts In Beijing --Evidence From Beijing Subway Volume, Hanjing Shi 2017 Colby College

How Individuals React To Smog Alerts In Beijing --Evidence From Beijing Subway Volume, Hanjing Shi

Journal of Environmental and Resource Economics at Colby

This paper is going to find out the impact of smog alerts on individuals’ outdoor activities in Beijing. I use the subway volume to represent the outdoor activities. There are four levels of smog alerts in Beijing – blue, yellow, orange, and, red. The blue one is the lowest, and the red one is the highest. People in Beijing in all do not react to smog alerts in all statistically significant both on working days and weekends. But when combine orange alerts and red alerts together, the results show that people react to severe alerts differently during non-weekend days and weekend ...


Nudging Neighbors: Analyzing Peer Effects Of The Lakesmart Program In The Belgrade Lakes, George A. Voigt 2017 Colby College

Nudging Neighbors: Analyzing Peer Effects Of The Lakesmart Program In The Belgrade Lakes, George A. Voigt

Journal of Environmental and Resource Economics at Colby

Peer effects are an increasingly studied field in economics, and can have large impacts at a local level. In this research we seek to identify whether there is an impact of early adopters on their neighbors to become adopters. The scope for this study is the LakeSmart program that operate in Maine. Specifically we are focusing on the Belgrade lakes, and analyzing data from 2005 to present in addition with a survey of demographic characteristics conducted in 2011. Results suggest that the impact of a neighbor on the likelihood of a household to be LakeSmart certified is statistically significant and ...


Water Restrictions And Water Use: An Analysis Of Water Restriction Effects In Norfolk County, Rebecca L. Robinson, Ashley Conley 2017 Colby College

Water Restrictions And Water Use: An Analysis Of Water Restriction Effects In Norfolk County, Rebecca L. Robinson, Ashley Conley

Journal of Environmental and Resource Economics at Colby

This paper aims to determine what effect water restrictions in Norfolk County, Massachusetts have on residential water usage. Using data from the Massachusetts Department of Environmental Protection, this paper analyzes subsequent municipal water usage within and across towns after water restrictions, both mandatory and voluntary, are implemented. Accounting for town fixed effects, the results indicate that for some towns, water restrictions do in fact have a significant impact on decreasing water usage.


The Epa's Air Quality Index, And Public Transportation Usage In The Chicago Metro Region, Nicholas R. Rosenberg 2017 Colby College

The Epa's Air Quality Index, And Public Transportation Usage In The Chicago Metro Region, Nicholas R. Rosenberg

Journal of Environmental and Resource Economics at Colby

This paper assesses whether air quality influences public transportation ridership in the city of Chicago. Urban air pollution is a serious health risk, and a priority of urban municipalities. Public transportation is an attractive option for governments attempting to curb urban air emissions. I use data from the Chicago Transit Authority (CTA) and the EPA’s Air Quality Index (AQI) to explore the relationship between a day’s air quality and CTA ridership. I employ three different model specifications, rail, bus and total ridership, to test whether high AQI values (poor air quality) result in increased public transportation ridership in ...


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 ...


When Trash Costs Money: Analyzing The Impact Of Pay-As-You-Throw Programs In Massachusetts, Thomas W. Barry IV 2017 Colby College

When Trash Costs Money: Analyzing The Impact Of Pay-As-You-Throw Programs In Massachusetts, Thomas W. Barry Iv

Journal of Environmental and Resource Economics at Colby

This paper evaluates whether municipalities with Pay-As-You-Throw (PAYT) programs dispose of less trash per household than municipalities without them. Given how much trash U.S. residents produce, the negative environmental effects associated with trash disposal, as well as how much the U.S. Environmental Protection Agency advocates for PAYT, it is important to closely analyze whether these programs actually do their job. This paper formally analyzes the effects of PAYT programs using the Massachusetts Department of Environmental Protection’s trash disposal data from 2011-2015. After controlling for municipality and time heterogeneity, my analysis shows that PAYT programs reduce trash per ...


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.


Streambank Erosion Mapping On The Nottoway River Using Gps-Based Above-Water Video, Emine Fidan 2017 University of Tennessee, Knoxville

Streambank Erosion Mapping On The Nottoway River Using Gps-Based Above-Water Video, Emine Fidan

Pursuit - The Journal of Undergraduate Research at the University of Tennessee

This project concerns the development of streambank erosion maps on military installations utilizing GPS-based above-water video mapping and image georeferencing techniques. The river mapped was the Nottoway River at the Fort Pickett military installation on October 10-11, 2015. Kayak-mounted above-water cameras were utilized to capture georeferenced images of streambank erosion. These GIS-based erosion classifications were utilized to develop erosion maps for determining streambank erosion conditions along the river. Areas of high erosion were identified as about two percent of the river (2167 ft. of streambank length). These maps allow for the opportunity to revisit the sites to determine changes in ...


Fish And Macroinvertebrate Response To Restored Off Channel Habitats On The Lower Platte River, Nebraska, Caleb Uerling 2017 University of Nebraska-Lincoln

Fish And Macroinvertebrate Response To Restored Off Channel Habitats On The Lower Platte River, Nebraska, Caleb Uerling

Dissertations & Theses in Natural Resources

Anthropogenic alterations to large rivers ranging from impoundments to levees have caused many rivers to no longer access the floodplain. The ecological integrity of floodplain rivers depends on the interaction between main-channel and floodplain habitats. Fish communities inhabiting floodplain habitats are often dictated by the type of habitat and conditions within that habitat. As restoration projects are undertaken it is imperative that managers understand how fish and macroinvertebrates respond to these events. We collected fish, macroinvertebrates, and habitat parameters on two restored floodplain habitats on the lower Platte River, Nebraska to answer questions about aquatic community response to floodplain restoration ...


Function And Biodegradation In Soil Of Bioplastic Horticultural Containers Made Of Pla-Biorestm Composites, James Schrader, Kenneth McCabe, William Graves, David Grewell 2017 Iowa State University

Function And Biodegradation In Soil Of Bioplastic Horticultural Containers Made Of Pla-Biorestm Composites, James Schrader, Kenneth Mccabe, William Graves, David Grewell

William R Graves

Container-crops horticultural industries rely almost exclusively on petroleum-based plastic containers for modern production systems. Containers made of these materials fulfill all of the functions required during crop production, and perform better than containers made of clay, peat, and other natural materials, but the source of the plastic materials (fossil carbon), their lack of biodegradability, and their end-of-life disposal (97% end up in landfills) are major obstacles to sustainability. Although function and efficiency are among the most important aspects in determining the best materials for horticultural containers, there is no need for containers to persist in the environment for decades when ...


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.


Watershed Features And Stream Water Quality: Gaining Insight Through Path Analysis In A Midwest Urban Landscape, U.S.A., Jiayu Wu, Timothy W. Stewart, Janette R. Thompson, Randall K. Kolka, Kristie J. Franz 2017 Iowa State University

Watershed Features And Stream Water Quality: Gaining Insight Through Path Analysis In A Midwest Urban Landscape, U.S.A., Jiayu Wu, Timothy W. Stewart, Janette R. Thompson, Randall K. Kolka, Kristie J. Franz

Timothy W. Stewart

Urban stream condition is often degraded by human activities in the surrounding watershed. Given the complexity of urban areas, relationships among variables that cause stream degradation can be difficult to isolate. We examined factors affecting stream condition by evaluating social, terrestrial, stream hydrology and water quality variables from 20 urban stream watersheds in central Iowa, U.S.A. We used path analysis to examine and quantify social and ecological factors related to variation in stream conditions. Path models supported hypotheses that stream water quality was influenced by variables in each category. Specifically, one path model indicated that increased stream water ...


Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz 2017 Iowa State University

Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz

Thomas M. Isenhart

Grazing management practices have the potential to mitigate some problems with sediment and phosphorus loading in pasture streams. The project demonstrated possible strategies to lessen grazing impacts on streams.


Reconnecting Iowa Riparian Buffers With Tile Drainage (1), Dan B. Jaynes, Thomas M. Isenhart 2017 Iowa State University

Reconnecting Iowa Riparian Buffers With Tile Drainage (1), Dan B. Jaynes, Thomas M. Isenhart

Thomas M. Isenhart

Changing the configuration of tile drainage structures to allow subsurface flow through a riparian buffer could offer farmers another option for nitrate removal. This project examined the effects of using tiling and buffers to enhance the denitrification process.


Reconnecting Riparian Buffers With Tile Drainage (2), Dan B. Jaynes, Thomas M. Isenhart, Timothy B. Parkin 2017 Iowa State University

Reconnecting Riparian Buffers With Tile Drainage (2), Dan B. Jaynes, Thomas M. Isenhart, Timothy B. Parkin

Thomas M. Isenhart

This is a continuation of an earlier pilot project (E2010-01) where tile discharge was rerouted to allow subsurface flow through an established riparian buffer. This third year of observations allowed researchers to gather more data on nitrate removal using this system.


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