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Articles 1 - 21 of 21
Full-Text Articles in Physical Sciences and Mathematics
Are Local Chemical Releases Causing An Increase In Cancer Rates In East Baton Rouge Parish?, India T. Anderson
Are Local Chemical Releases Causing An Increase In Cancer Rates In East Baton Rouge Parish?, India T. Anderson
LSU Master's Theses
Environmental pollution has become a steadily growing problem in today’s society. East Baton Rouge alone has 13 chemical plants in the parish. The goal of this research is to find out if the chemical releases in the parish are having an effect on the cancer rates in East Baton Rouge Parish. I gathered data from all 64 parishes in Louisiana. The four chemicals I chose to study specifically, Benzene, Dioxin, Formaldehyde, and Xylene. Chemical release data was taken from the Toxic Release Inventory (TRI) website and software from the years1988 to 2009, which was the last reporting year. The cancers …
Effect Of Sediment Slurry Application On Selected Aspects Of Sulfur, Iron, And Manganese Biogeochemistry In A Coastal Louisiana Marsh, Martin Kyle Maxwell
Effect Of Sediment Slurry Application On Selected Aspects Of Sulfur, Iron, And Manganese Biogeochemistry In A Coastal Louisiana Marsh, Martin Kyle Maxwell
LSU Master's Theses
Coastal wetlands, long recognized to be among the most productive ecosystems on the planet, are being lost at a disturbingly high rate in coastal Louisiana due to both eustatic sea-level rise and land subsidence. A number of approaches have been proposed for reducing wetland loss and restoring deteriorated wetlands, among which the addition of sediment to increase marsh surface elevation is promising. However, little is known about how the added sediment affects the biogeochemistry of marsh sediment. The objective of this study was to determine the effects of sediment slurry addition on sulfur, iron, and manganese biogeochemistry in a subsiding …
Evaluation Of Methods To Predict Weibull Parameters For Characterizing Diameter Distributions, Krishna Prasad Poudel
Evaluation Of Methods To Predict Weibull Parameters For Characterizing Diameter Distributions, Krishna Prasad Poudel
LSU Master's Theses
Compared to other distribution functions, the Weibull distribution has been more widely used in describing diameter distributions because of its flexibility and relative simplicity. Parameters of the Weibull distribution are generally predicted either by the parameter prediction method or by the parameter recovery method. The coefficients of the regression equations for predicting Weibull parameters, moments, or percentiles are often estimated by use of different approaches such as ordinary least squares (OLS), seemingly unrelated regression (SUR) or cumulative distribution function regression (CDFR). However, there is no strong rationale for preferring one method over the other. We developed and evaluated different methods …
Spatiotemporal Responses Of Macroinvertebraes To Timber Harvesting In Low-Gradient Headwater Streams Of Central Louisiana, Derrick Klimesh
Spatiotemporal Responses Of Macroinvertebraes To Timber Harvesting In Low-Gradient Headwater Streams Of Central Louisiana, Derrick Klimesh
LSU Master's Theses
Macroinvertebrates are reflective of their nearby environment and are popularly used to detect changes in water quality. In this thesis research, macroinvertebrates were collected to investigate aquatic effects of timber harvesting operations with and without the use of best management practices (BMPs) in a forested, low-gradient, subtropical watershed in central Louisiana. Habitat assessments, physicochemical and hydrologic measurements, and macroinvertebrate sampling were conducted nine times from 2006 to 2010 during the spring and late summer, at 13 site locations ranging from plot level to watershed outlet. Timber harvesting occurred in September of 2007. A total of 86,183 macroinvertebrates were identified from …
Evaluation Of Selected Plant Products As Dietary Protein Sources For Florida Pompano (Trachinotus Carolinus), Gregory Lech
Evaluation Of Selected Plant Products As Dietary Protein Sources For Florida Pompano (Trachinotus Carolinus), Gregory Lech
LSU Master's Theses
Profitability of aquaculture enterprises worldwide has been affected by rising fish meal prices. Plant proteins are promising replacements for fish meal because of their lower cost and worldwide availability. The goal of this research was to provide nutritional information for the development of all-plant diets for Florida pompano by evaluating growth of fish fed soy-based, fish-meal-free diets and assessing the nutritional value of several plant protein sources. In the first experiment, juvenile Florida pompano were fed five, soy-based, fish-meal-free diets containing graded levels of soybean meal (SBM, or M) at 0, 20, 25, 30, or 35%, with the remaining protein …
A Comparative Study Of Cellulose I And Ii And Fibers And Nanocrystals, Yiying Yue
A Comparative Study Of Cellulose I And Ii And Fibers And Nanocrystals, Yiying Yue
LSU Master's Theses
The influence of sodium hydroxide treatment on the structure of cotton fibers was studied. Compared to raw cotton fibers, the entire bundles of mercerized fibers were converted into a swollen and roughened state. Fourier transform infrared spectrometry (FTIR) indicated that intermolecular hydrogen bonding was enhanced by mercerization treatment. Wide-angle X ray diffraction (WXRD) results showed decreased fiber crystallinity after mercerization. The structure of cellulose II fibers was more thermally stable than cellulose I fibers. Mechanical properties of cotton fiber-reinforced polyethylene oxide (PEO) composites demonstrated that both raw and mercerized cotton fibers enhanced their tensile strength of the PEO matrix, but …
Addressing Sea Level Rise In The People's Republic Of China And The United States: A Comparative Review Of Administrative And Policy Frameworks, Mo Chen
LSU Master's Theses
Sea level rise (SLR) is directly influenced by climate change through the processes of temperature affecting the growth and decay of continental ice (Barron and Thompson 1990). It is a significant environmental challenge that threatens coastal areas of many nations throughout the world. The Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report issued in 2007 states that SLR poses a serious challenge to sustainable development along many coastal areas. The objectives of this thesis are to examine the SLR management issue both in the P.R.C. and the U.S, identify the government agencies that are concerned with SLR issues in …
Estimating Greenhouse Gas Emissions In Louisiana At The Parish Scale, Quang Tran
Estimating Greenhouse Gas Emissions In Louisiana At The Parish Scale, Quang Tran
LSU Master's Theses
The estimation of greenhouse gas (GHG) emissions and removals from the atmosphere at the county scale is an interest to many local decision makers and scientists looking to plan, track, mitigate, or reduce concentrations at the local or regional level. This thesis presents a new approach in downscaling state-level emissions to contiguous county levels using the state of Louisiana as an example. Here, we applied the volume- preserving principle in an attempt to improve existing methods and fully characterize accurate GHG emissions at the county (i.e., parish) level. All six “Kyoto” GHG emissions related to sources and sectors were assessed …
Social Vulnerability In Louisiana's Upper Industrial Corridor: Spatial Distribution And Linkages With Cumulative Pollution - A Zip Code Level Analysis, María Belén Toscano
Social Vulnerability In Louisiana's Upper Industrial Corridor: Spatial Distribution And Linkages With Cumulative Pollution - A Zip Code Level Analysis, María Belén Toscano
LSU Master's Theses
Louisiana’s industrial corridor, the stretch of the lower Mississippi River from New Orleans to Baton Rouge, is one of the areas with the highest concentration of petrochemical facilities and chemical plants in the United States, as well as one of the most heavily polluted. In particular, the present study examined the associations of social vulnerability and potential exposure to environmental pollution in the upper section of the industrial corridor, the Baton Rouge Metropolitan Statistical Area (MSA). The study was based on the methodology developed by Cutter et al. (2003) to construct an empirically derived index to measure social vulnerability to …
Response Of Disturbance-Dependent Breeding Bird Communities To Two Site Preparations In Loblolly Pine Plantations, Falyn Leann Owens
Response Of Disturbance-Dependent Breeding Bird Communities To Two Site Preparations In Loblolly Pine Plantations, Falyn Leann Owens
LSU Master's Theses
Disturbance-dependent birds throughout the United States have recently experienced significant declines due to fire suppression and conversion of wilderness to human-dominated landscapes. In Louisiana, young loblolly pine plantations are an important source of early- successional habitat for these specialist birds. However, changes in management practices may affect forest stand suitability for bird communities that rely on them. Here I examined how changes in two site preparations, tree row spacing [14 ft (4.3 m) vs. 20 ft (6.1 m)] and arrangement of post-harvest woody debris (piled vs. scattered), impacted breeding, disturbance- dependent birds. During four summers in 2006-2010, observers conducted point …
Developing A Gulf-Wide Oyster Reef Restoration Plan: Identification Of Spatial, Socio-Economic And Geo-Political Constraints, Elizabeth Ashby Nix
Developing A Gulf-Wide Oyster Reef Restoration Plan: Identification Of Spatial, Socio-Economic And Geo-Political Constraints, Elizabeth Ashby Nix
LSU Master's Theses
Oyster reefs have recently been identified as one of the most endangered coastal ecosystems, fueling efforts to restore and enhance these systems. Oyster reefs located in the northern Gulf of Mexico have been identified as some of the healthiest of reefs globally, and current efforts focus on devising an approach to Gulf-wide restoration of these reefs. As with all natural resource management and restoration, success is dependent on more than simply understanding the biological requirements of the resource; rather, they are equally dependent on understanding and working within the social and political context in which these management and restoration activities …
Effects Of Row Spacing And Debris Distribution On Small Mammal And Vegetation Communities In Newly Established Loblolly Pine Plantations, Louisiana, Joshua Lee Grace
Effects Of Row Spacing And Debris Distribution On Small Mammal And Vegetation Communities In Newly Established Loblolly Pine Plantations, Louisiana, Joshua Lee Grace
LSU Master's Theses
Commercial pine (Pinus spp.) forests in the southeastern United States are key to providing fiber for global wood supply needs. Concern has arisen over possible effects of intensive forest management techniques, including row spacing and distribution of woody debris after logging, on plant and wildlife communities. Therefore, we quantified response of plant and small mammal communities in replanted loblolly pine (P. taeda) stands to mechanical site preparation including 2 levels of row spacing and 2 methods of distributing woody debris following harvest in north and southeastern Louisiana, USA. Sites (n=16) were prepared with a combination of row spacing between planting …
Factors Structuring Zooplankton Density And Composition Within A Louisiana River And Floodplain Tributaries With Emphasis On Hydrologic Processes, William Lowe Sheftall Iv
Factors Structuring Zooplankton Density And Composition Within A Louisiana River And Floodplain Tributaries With Emphasis On Hydrologic Processes, William Lowe Sheftall Iv
LSU Master's Theses
Zooplankters are important members of freshwater communities, facilitating the transfer of energy from primary production to higher trophic levels. Lentic floodplain systems are important in providing zooplankters with adequate habitat for growth and reproduction. Recently, The Nature Conservancy has been interested in cataloguing the aquatic taxa that inhabit the Ouachita River and floodplain in northern Louisiana, concurrent with an attempt to reestablish a river-floodplain connection with the river and eastern floodplain (the Mollicy Farms Unit, part of the Upper Ouachita National Wildlife Refuge). Sampling was conducted at seven sites along the Ouachita River and western floodplain monthly for one year …
Population Characteristics Of A White-Tailed Deer Herd In An Industrial Pine Forest Of North-Central Louisiana, John Henry Harrelson
Population Characteristics Of A White-Tailed Deer Herd In An Industrial Pine Forest Of North-Central Louisiana, John Henry Harrelson
LSU Master's Theses
White-tailed deer are the most important game species in Louisiana, and throughout the southeastern United States. Likewise, the forest products industry represents the most important agricultural commodity in Louisiana, and industrial landowners frequently lease their properties to sportsmen specifically for white-tailed deer hunting. I conducted research assessing survival, space use, and habitat selection of white-tailed deer on a 3885 ha industrial forest owned by Plum Creek Timber Company. I captured 61 deer in Union Parish, Louisiana in 2009-2010, radio-marked 24 females and 23 males, and ear-tagged 7 females and 6 males. Season and sex interacted to affect home range and …
Carbon Sequestration And Uneven-Aged Management Of Loblolly Pine Stands In The Southern Usa: A Joint Optimization Approach, Rajan Parajuli
Carbon Sequestration And Uneven-Aged Management Of Loblolly Pine Stands In The Southern Usa: A Joint Optimization Approach, Rajan Parajuli
LSU Master's Theses
Forest carbon sequestration is regarded as a viable and cost effective option for reducing global greenhouse gas emissions. Several research studies analyzed the effects of joint management of carbon and timber under different even-aged forest management scenarios, and concluded that carbon benefits can alter forest management schedules significantly. However, research specifically focused on the inclusion of carbon sequestration benefits into uneven-aged management has received little attention. This study determined the optimum joint management regime of timber and carbon in uneven-aged loblolly pine stands in Louisiana, and assessed management and financial effects resulting from the integration of carbon benefits into uneven-aged …
A Look At The Integration Of Wetlands And Hazard Mitigation Planning In Coastal Louisiana, Kathleen Melissa Bowers
A Look At The Integration Of Wetlands And Hazard Mitigation Planning In Coastal Louisiana, Kathleen Melissa Bowers
LSU Master's Theses
Due to the destruction of the damaging hurricanes of 2005, Katrina and Rita, more effort has gone into the rebuilding and prevention of future disasters along the Louisiana coast than ever before. This research focuses on the use of wetlands, in the ten coastal parishes of Louisiana, as a mitigation effort aiding in the protection of coastal communities. Using content analysis and decision support software, a wetland ranking was created that represents how wetlands are utilized and protected within each parish. Criteria gathered from the plans include how many times wetlands were mentioned, collaboration with the state and other agencies, …
Temporal Changes Of Coastal Community Resilience In The Gulf Of Mexico Region, Kenan Li
Temporal Changes Of Coastal Community Resilience In The Gulf Of Mexico Region, Kenan Li
LSU Master's Theses
The Gulf of Mexico Region is a region where coastal hazards are frequently occurring. To study the resilience of the counties along the Gulf of Mexico is of great importance to its sustainable planning and development. It also plays a huge role in coastal hazard mitigation. This study assesses the temporal changes of coastal community resilience of 132 counties along the Gulf of Mexico. The basic analytical framework to assess resilience consists of three dimensions (exposure, damage, and recovery) and two relationships (vulnerability and adaptability). Vulnerability refers to the relationship between exposure and damage, whereas the relationship between damage and …
An Overview Of Green Jobs In The Louisiana Forest Sector, Ryan D. Olson
An Overview Of Green Jobs In The Louisiana Forest Sector, Ryan D. Olson
LSU Master's Theses
The term “green job” is a relatively new definition that defines employment activities that are likely to have occurred since the beginning of human existence. The push to identify, to quantify and to drive the growth of these jobs has recently been brought on by climate change and the depletion of Earth’s natural resources. According to the United States Department of Labor Bureau of Labor Statistics, green jobs are either (a) Jobs in businesses that produce goods or provide services that benefit the environment or conserve natural resources or (b) Jobs in which workers’ duties involve making their establishment’s production …
Developmental Responses To Abiotic Conditions During Aquatic And Air Incubatoin Of The Gulf Killifish (Fundulus Grandis): Subtitle, Charles Alexander Brown
Developmental Responses To Abiotic Conditions During Aquatic And Air Incubatoin Of The Gulf Killifish (Fundulus Grandis): Subtitle, Charles Alexander Brown
LSU Master's Theses
The Gulf killifish (Fundulus grandis) is a topminnow native to the tidal marshes of the Gulf of Mexico. The species is prized by anglers as effective bait for catching popular sportfish and is of interest to aquaculturists and bait dealers due to its hardy nature. Limited seasonal availability and aquaculture of this species due to low fecundity and larval cannibalism of fry has led to increased incentive to improve cultural techniques. The purpose of this study is to determine the influences of temperature, salinity, and air incubation on embryogenesis of the Gulf killifish. Temperature was found to have a negative …
Temporal Changes In Quality Of Life And Environment In New Orleans After Hurricane Katrina, Danielle Johanna Larock
Temporal Changes In Quality Of Life And Environment In New Orleans After Hurricane Katrina, Danielle Johanna Larock
LSU Master's Theses
Understanding and assessing the spatial and temporal changes of quality of life and environment of a community is critical to its sustainable development, especially after a disaster strikes. This study explores an approach that integrates remote sensing with socioeconomic data to assess the temporal changes in quality of life and environment (QOL) using Orleans Parish as an example. Hurricane Katrina, which struck New Orleans in 2005, has had vast implications economically, socially, and environmentally for this city and the surrounding area. Empirically quantifying these concepts will help to rebuild the city more sustainably. This study investigated change in environmental quality …
Small And Medium Enterprise Agricultural Producers And Forest Landowners Attitudes And Perceptions Towards New Bio-Based Paths To Prosperity: A Pilot Study In Louisiana And Mississippi, Roger D. Smithhart
LSU Master's Theses
Energy producers, developers, legislators, policy makers, and the public are searching for alternative energy sources to alleviate energy demands and dependency on fossil fuels. Of the renewable energy sources, biomass from forestry, crop, and animal residues offer a clean and sustainable solution to help mitigate climate issues and stabilize energy needs. However, most forests and farms in the U.S. are privately owned. It’s important to understand forest landowners’, agricultural producers’, and poultry producers’ attitudes and perceptions towards management activities intended for producing bio-based products. Three surveys were conducted tailored for each group. We surveyed 3,500 small to medium forest landowners …