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Full-Text Articles in Life Sciences

Ecological Factors Influencing Wild Pig Damage To Planted Pine And Hardwood Seedlings, Micah P. Fern, James B. Armstrong, Rebecca J. Barlow, John S. Kush Sep 2020

Ecological Factors Influencing Wild Pig Damage To Planted Pine And Hardwood Seedlings, Micah P. Fern, James B. Armstrong, Rebecca J. Barlow, John S. Kush

Human–Wildlife Interactions

Expanding wild pig (Sus scrofa) populations across the southern United States has the potential to impact longleaf pine (Pinus palustris) restoration efforts. The depredation of planted pine seedlings is the most widespread and economically costly damage caused by wild pigs in forest plantations. A better understanding of the ecological factors affecting depredation rates will allow managers to implement best management practices to reduce seedling mortality from wild pigs at their most vulnerable stage of growth. From March 2016 to March 2017, we evaluated wild pig preferences for planted pine and hardwood species at a 34.4-ha cutover site and 4 ...


A Preliminary Investigation Of The Impact Of Forest Management Practices On Microhabitat Abiotic Variables In The Southern Appalachian Mountains, Jasmine Williamson, Allison Bailey, Jacob Lougee, David Patterson, Jessica Patterson Jul 2020

A Preliminary Investigation Of The Impact Of Forest Management Practices On Microhabitat Abiotic Variables In The Southern Appalachian Mountains, Jasmine Williamson, Allison Bailey, Jacob Lougee, David Patterson, Jessica Patterson

Georgia Journal of Science

Existing research has demonstrated that forest management practices (e.g., clear-cutting, planting) can dramatically impact animal communities. This is particularly the case with amphibian populations due to their sensitivity to microhabitat alterations. However, few studies have investigated the manner by which forest management practices impact the abiotic variables most relevant to healthy amphibian populations. In this study we investigated how spatially localized forest management practices (i.e., at the scale of hundreds of meters) alter the microhabitat variables that have been shown important to amphibian population distributions. We assessed the relationship between forest composition and microhabitat abiotic variables across three ...


Shifting Public Perception: Climate Change Means Living With Fire And Smoke, Robert Froembling May 2020

Shifting Public Perception: Climate Change Means Living With Fire And Smoke, Robert Froembling

Seattle Journal of Technology, Environmental & Innovation Law

The urgency to prepare for the climate crisis has never been greater. We are currently living in the sixth mass extinction and the effects are only going to accelerate. We will inherit more wildfires, larger wildfires, and more frequent wildfires.

This piece is not meant to stoke fear in its readers or be depressing, but to shift public perception on what our future holds by evaluating the laws and science presented to us. This piece will look at regional and federal regulations and assess the increased rate of forest fires and the grave public health concerns from stagnant smoke specifically ...


Determination Of Timeliness Cost Using Method Of Average Workability Robability Based On Reliability Function Of Farm Tractors, Mohammad Poozesh, Javad Tarighi Feb 2020

Determination Of Timeliness Cost Using Method Of Average Workability Robability Based On Reliability Function Of Farm Tractors, Mohammad Poozesh, Javad Tarighi

Emirates Journal for Engineering Research

There is an optimum time for implementing field operation of a crop in each region. If the operation were accomplished sooner or later, it might cause a reduction in yield quantity and quality that is named timeliness cost. The purpose of this study is to survey the timeliness cost of harvesting operation of sugar cane based on reliability function of MF285 tractors operating in Debal Khazaei Agro-Industry Co. in Khuzestan, a province of Iran. MF285 tractors have low reliability in Iran, and due to their low reliability have an uncertainty in implementation of farm operation, though it is not considered ...


Fire History Of A Georgia Montane Longleaf Pine (Pinus Palustris) Community, Nathan Klaus May 2019

Fire History Of A Georgia Montane Longleaf Pine (Pinus Palustris) Community, Nathan Klaus

Georgia Journal of Science

Montane longleaf pine forests, woodlands, and savannas are endangered, fire-dependent ecosystems of the Piedmont, Ridge and Valley, Appalachian, and Cumberland Plateau physiographic provinces of Georgia, Alabama, and North Carolina. Compared to other longleaf pine ecosystems, e.g., longleaf pine-wiregrass, little has been published about montane longleaf pine ecosystems. Understanding the historic fire regimes that once maintained montane longleaf pine ecosystems is an important first step toward achieving restoration and conservation goals for this ecosystem. I used two approaches to investigate historic fire regimes: 1) a dendrochronological study of fire scars on Sprewell Bluff Natural Area and 2) calculations of the ...


Mapping Wilderness Character In Adams County, Pennsylvania, Alyssa J. Kaewwilai May 2019

Mapping Wilderness Character In Adams County, Pennsylvania, Alyssa J. Kaewwilai

Gettysburg Social Sciences Review

The spatial trends in wilderness character in Adams County, Pennsylvania were examined to evaluate how influenced specific areas are impacted by human activity and development. Indicators of wilderness character were selected as natural, untrammelled, undeveloped, along with solitude and unconfined recreation by the Death Valley National Park staff in which a 0-4 ranking system was based upon to portray a range of most degraded to optimal land. This was executed through examination of factors such as abundance of biodiversity and human development within the given area before a Monte Carlo simulation was run to show sensitivity of change. It was ...


The Effects Of Matthew’S Storm Surge On Coastal Loblolly Pine And Wax Myrtle Understory Regeneration, Brynn D. Wilkinson Jan 2019

The Effects Of Matthew’S Storm Surge On Coastal Loblolly Pine And Wax Myrtle Understory Regeneration, Brynn D. Wilkinson

Journal of the South Carolina Academy of Science

Hurricanes have detrimental effects on the environment and the economy. Not only are these effects felt immediately after the hurricane, but they last long after the winds have died down. They can affect future plant growth and mortality. In October of 2016 South Carolina was hit by Hurricane Matthew, a category 5 hurricane. Hobcaw Barony, our study site, was in the direct path of the storm. This created an opportunity to study the immediate effects on regeneration after a hurricane. Regenerations rates were measured along and around a surge line to determine regeneration and mortality rates. This data also allowed ...


The Impact Of Tree Planting Program Governance Structure On Tree Survivorship And Vigor: A Case Study Using The Massachusetts Greening The Gateway Cities Program, Nicholas A. Geron, John Rogan, Deborah Martin, Marc Healy Jan 2019

The Impact Of Tree Planting Program Governance Structure On Tree Survivorship And Vigor: A Case Study Using The Massachusetts Greening The Gateway Cities Program, Nicholas A. Geron, John Rogan, Deborah Martin, Marc Healy

Proceedings of the Fábos Conference on Landscape and Greenway Planning

Trees in urban neighborhoods benefit residents by reducing building energy costs, providing cleaner air, decreasing surface runoff, and improving quality of life. However, tree canopy cover is not evenly distributed across neighborhoods in many mid-sized American cities which leads to higher air and surface temperatures, and increased energy bills for residents who are the most economically vulnerable. The state of Massachusetts (USA) created the Greening the Gateway Cities (GGC) program to increase tree canopy cover by 10% in post-industrial, midsized cities with lower educational attainment and lower income than state averages. The study posed two questions: what is the governance ...


The Impact Of Prescribed Fire On Moth Assemblages In The Boston Mountains And Ozark Highlands, In Arkansas, Erin E. Guerra, Cristina M. Blanco, Jorista Garrie Jan 2019

The Impact Of Prescribed Fire On Moth Assemblages In The Boston Mountains And Ozark Highlands, In Arkansas, Erin E. Guerra, Cristina M. Blanco, Jorista Garrie

Journal of the Arkansas Academy of Science

In addition to the impacts of prescribed fires on forest vegetation, this ecosystem process also has dramatic impacts on associated insect assemblages. For herbivorous, terrestrial insects, fire predictably results in a cycle of initial insect population reduction followed by recovery and growth, in which these insect populations exceed pre-fire abundances. We sought to examine if fire-induced disturbance cycles make prescribed burned areas more or less suitable specifically for moths (order Lepidoptera), which is a major food source for, among others, multiple bat species. We surveyed moth assemblages at 20 burned and 20 unburned sites in the Boston Mountain and Ozark ...


Effectiveness Of Snap And A24-Automated Traps And Broadcast Anticoagulant Bait In Suppressing Commensal Rodents In Hawaii, Aaron B. Shiels, Tyler Bogardus, Jobriath Rohrer, Kapua Kawelo Jan 2019

Effectiveness Of Snap And A24-Automated Traps And Broadcast Anticoagulant Bait In Suppressing Commensal Rodents In Hawaii, Aaron B. Shiels, Tyler Bogardus, Jobriath Rohrer, Kapua Kawelo

Human–Wildlife Interactions

Commensal rodents (invasive rats, Rattus spp.; house mice, Mus musculus) are well established globally. They threaten human health by disease transfer and impact economies by causing agricultural damage. On island landscapes, they are frequent predators of native species and affect biodiversity. To provide managers with better information regarding methods to suppress commensal rodent populations in remote island forests, in 2016 we evaluated the effectiveness of continuous rat trapping using snap-traps, Goodnature®A24 self-resetting rat traps, and a 1-time (2-application) hand-broadcast of anticoagulant rodenticide bait pellets (Diphacinone-50) applied at 13.8 kg/ha per application in a 5-ha forest on Oahu ...


Contemporary Sunday Hunting Laws: Unnecessary Economic Roadblocks, Ripe For Repeal, Seamus Ovitt Oct 2018

Contemporary Sunday Hunting Laws: Unnecessary Economic Roadblocks, Ripe For Repeal, Seamus Ovitt

William & Mary Environmental Law and Policy Review

In America, Sunday closing laws, laws restricting what activities individuals could engage in, date back to the early colonial period; those early laws, like much of North American jurisprudence, trace their roots to the laws that existed in England at the time. Historically, however, laws restricting the behavior of individuals, specifically on Sundays, date back thousands of years; initially, their language was tied directly to that of the Old Testament. As God declared:

[s]ix days shalt thou labour, and do all thy work: But the seventh day [is] the Sabbath of the Lord thy God: [in it] thou shalt ...


Developing A Coastal Gis Model Of Sri Lanka To Pinpoint Areas At Risk Of Tsunamis, John E. Dellysse, Buddhika D. Madurapperuma Jun 2018

Developing A Coastal Gis Model Of Sri Lanka To Pinpoint Areas At Risk Of Tsunamis, John E. Dellysse, Buddhika D. Madurapperuma

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University

No abstract provided.


Survey And Map Distribution Of English Ivy (Hedera Helix L.) At Patrick's Point State Park, California, John W. Cortenbach, Buddhika D. Madurapperuma Jun 2018

Survey And Map Distribution Of English Ivy (Hedera Helix L.) At Patrick's Point State Park, California, John W. Cortenbach, Buddhika D. Madurapperuma

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University

No abstract provided.


I-Tree Landscape: A Case Study In Best Practices For Education And Dissemination For Multiple User Groups, Margaret M. Abood May 2018

I-Tree Landscape: A Case Study In Best Practices For Education And Dissemination For Multiple User Groups, Margaret M. Abood

DePaul Discoveries

The urban ecosystems we inhabit provide essential ecosystem services to humans, such as air pollution removal, as well as effective means to avoid costs related to urban development, such as stormwater treatment. A better understanding of the value of ecosystem services and their spatial distribution in urban areas is vital to widespread, wholistic understanding of the relationship of environmental, economic, and social conditions. As such, it should be a component of education in grades 6-12, college, and continuing education. i-Tree Landscape is a free, online model developed by the USDA Forest Service in which users can select a geography (i ...


Resource Selection Of Free-Ranging Horses Influenced By Fire In Northern Canada, Sonja E. R. Leverkus, Samuel D. Fuhlendorf, Marten Geertsema, Brady W. Allred, Mark Gregory, Alexandre R. Bevington, David M. Engle, J. Derek Scasta Jan 2018

Resource Selection Of Free-Ranging Horses Influenced By Fire In Northern Canada, Sonja E. R. Leverkus, Samuel D. Fuhlendorf, Marten Geertsema, Brady W. Allred, Mark Gregory, Alexandre R. Bevington, David M. Engle, J. Derek Scasta

Human–Wildlife Interactions

Free-ranging or feral horses (Equus ferus caballus) were important to the livelihood of First Nations and indigenous communities in Canada. The early inhabitants of the boreal region of British Columbia (BC) capitalized on naturally occurring wildfires and anthropogenic burning to provide forage for free-ranging horses and manage habitat for wildlife. This form of pyric herbivory, or grazing driven by fi re via the attraction to the palatable vegetation in recently burned areas, is an evolutionary disturbance process that occurs globally. However, its application to manage forage availability for free-ranging horses has not been studied in northern Canada. Across Canada, there ...


The Three Creeks Allotment Consolidation: Changing Western Federal Grazing Paradigms, Taylor Payne Jan 2018

The Three Creeks Allotment Consolidation: Changing Western Federal Grazing Paradigms, Taylor Payne

Human–Wildlife Interactions

The federal government owns approximately 47% of all land in the western United States. In the state of Utah, about 64% of the land base is managed by the federal Bureau of Land Management (BLM) and the U.S. Forest Service (USFS). The government has historically issued permits to owners of private lands to allow the owners to graze their livestock on public lands. The permits (allotments) are generally of 10-year duration and allow for an annual season of use. In some cases, continued and repeated historical annual grazing practices may not be ideal for permit holders and their communities ...


Landowners' Willingness To Supply Woody Biomass For Biofuel In West Alabama, Gilbert Adjoyi, Ellene Kebede Sep 2017

Landowners' Willingness To Supply Woody Biomass For Biofuel In West Alabama, Gilbert Adjoyi, Ellene Kebede

Professional Agricultural Workers Journal

Abstract

The Concern for national energy security, rural development, and climate change has created a wider attention for biofuels from woody biomass in recent times. For instance, West Alabama is an area of interest for stakeholders regarding the production of woody biomass. Therefore, the main objective of this study was to examine landowners’ willingness to supply woody biomass for biofuel in West Alabama. A mail survey of randomly selected landowners was conducted in eight selected counties. The results indicated that the average forestland owner is male, between ages of 40 and 57, with an average of 27 years of land ...


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 ...


Knowledge Of Forest Ecosystem Among Forest Guards In Southern Nigeria, Norris I. Erhabor Jan 2017

Knowledge Of Forest Ecosystem Among Forest Guards In Southern Nigeria, Norris I. Erhabor

Journal of Bioresource Management

Undertaken study assessed the level of ecological knowledge among forest guards in southern Nigeria. Descriptive survey research design was used for study. A structured questionnaire was administered to 60 respondents that are employed by forest guards system. Central question the study attempts to answer is the level of knowledge of the ecosystem among forest guards. Analysis of data revealed that forest guards have inadequate knowledge of ecosystem. Calculated mean score of respondents was 14.25. This mean score is lower than theoretical mean of 16 (80%). A binomial test revealed that fairly high number of respondents had inadequate knowledge ...


Comparison Of Four Harvesting Systems In A Loblolly Pine Plantation, John Klepac, Dana Mitchell Oct 2016

Comparison Of Four Harvesting Systems In A Loblolly Pine Plantation, John Klepac, Dana Mitchell

Professional Agricultural Workers Journal

Abstract

Felling and skidding operations were monitored while clearcut harvesting a 12-acre area of a 14-year old loblolly pine (Pinus taeda) plantation. The study area contained 465 trees per acre for trees 2.0 inches Diameter at Breast Height (DBH) and larger with a Quadratic Mean Diameter (QMD) of 7.26 inches. Two feller-bunchers (tracked and rubber-tired) and two skidders (conventional and large capacity) were paired to create four different harvesting systems which were randomly assigned to 3-acre units for evaluation of production rates and costs. Each system was balanced to determine the number of machines needed to minimize the ...


The Impacts Of Elephant Grazing On Plant Succession In Tropical Forests Of Africa, Nadia Swit May 2016

The Impacts Of Elephant Grazing On Plant Succession In Tropical Forests Of Africa, Nadia Swit

The Downtown Review

Succession occurs in an ecosystem when there is a change in the species structure and diversity in an ecological community over time. While this can allow for greater biodiversity, occasionally diversity can be stunted based on the level of disturbance and the invasiveness of the first pioneering species. As in the case of arrested succession, continual disturbance prohibits changes in the environment and suppresses species establishment. The effects of this continued disturbance are seen in the tropical forests in national parks in Uganda and Tanzania in Eastern Africa with African elephants (Loxodonta africana). The continuous browsing on trees by the ...


The Real Footprint Of Electric Vehicles, And What That Could Mean For Our Future, Krista Brown Jan 2016

The Real Footprint Of Electric Vehicles, And What That Could Mean For Our Future, Krista Brown

Journal of Environmental and Resource Economics at Colby

This paper looks at the impact of electric vehicles on CO2 emissions specifically based on the type of electricity used in each New England state analyzed. The research looks at the question of whether or not emissions will in fact be lowered as electric cars start to take the majority of vehicles used instead of the conventional cars that take up a much larger percent of the motor vehicles used today. Taking into account the use of electricity and how many sources of electricity also release a substantial amount of emissions, we see how valid the public opinion of electric ...


The Effect Of The Deer Population On The Number Of Car Accidents, Timothy J. Hallock Jr Jan 2016

The Effect Of The Deer Population On The Number Of Car Accidents, Timothy J. Hallock Jr

Journal of Environmental and Resource Economics at Colby

This paper examines the relationship between the deer population and the number of car accidents in New York State from 2002-2012. Data collected includes information on the amount of deer hunted, the number of car accidents, and the number of hunting permits issued. This paper also involves a county level analysis within New York State of 56 counties from 2007 - 2012. An important part of analysis of this paper is the examination of the Buck population vs. the Doe population on the number of car accidents. This is an important study because of its possible policy implications regarding the amount ...


Socioeconomic Attributes’ Relationship To Green Commercial Office Buildings, Tianyang Zhou Jan 2016

Socioeconomic Attributes’ Relationship To Green Commercial Office Buildings, Tianyang Zhou

Journal of Environmental and Resource Economics at Colby

This paper examines the relationship between the socioeconomic attributes of a state and its green commercial office space adaptation. I hypothesize that a state with high socioeconomic status will have a high green building adoption. Additionally, the high socioeconomic status states may be more likely to invest in green commercial buildings with higher LEED certification levels, and various types of LEED commericial office projects are affected by the socoeconomic attributes differently.


Do Peers Get Punished: Stock Market Effect Of Bp Oil Spill On Peers, Yuga Koda Jan 2016

Do Peers Get Punished: Stock Market Effect Of Bp Oil Spill On Peers, Yuga Koda

Journal of Environmental and Resource Economics at Colby

This paper examines the stock market reaction to the British Petroleum oil spill on April 20, 2010. This event study looks at different sectors that may be affected by the oil spill. It finds that different industries do not have significant abnormal returns, with two exceptions. First, utilities companies have a very small positive abnormal return for a short period of time after the incident. Second, when only looking at BP's direct competitors, there is a statistically significant negative abnormal return, implying that BP's competitors are punished for BP's mishap.


Media Effects On Solar Panel Installations Across 20 States, Casey Romeo Jan 2016

Media Effects On Solar Panel Installations Across 20 States, Casey Romeo

Journal of Environmental and Resource Economics at Colby

This paper looks at the relationship between media coverage of solar power and the solar panel installation at a state level. Specifically, it aims to find if more newspaper articles cause more households to adopt solar energy. Use data from 20 states from 2009 to 2014. I find that there is a modest, yet positive and statistically significant relationship between newspaper articles and installations, which suggests that the media does influence the decision to install solar panels. There is possible endogeneity between these two variables. Disentangling this endogeneity is beyond the scope of this research and would be a topic ...