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2012

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Modeling The Spatial And Temporal Dynamics Of Coastal Marsh Birds, Bradley A. Pickens Jan 2012

Modeling The Spatial And Temporal Dynamics Of Coastal Marsh Birds, Bradley A. Pickens

LSU Doctoral Dissertations

Wetland birds are likely to be influenced by habitat at multiple spatial scales, yet few studies have investigated bird responses at both broad and fine scales. Northern Gulf Coast marshes are dynamic ecosystems, and they provide an ideal place to examine habitat across spatial and temporal scales. My research focused on the secretive marsh bird guild (i.e. bitterns, rails, gallinules, grebes) with an emphasis on the king rail (Rallus elegans), a species of high conservation concern. My objectives were to investigate the wetland bird-environment relationship across scales, and to model annual changes in bird distribution. Study sites were in the …

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Development And Characterization Of A Murine Model Of Rickettsia Parkeri Rickettsiosis, Britton Grasperge Jan 2012

Development And Characterization Of A Murine Model Of Rickettsia Parkeri Rickettsiosis, Britton Grasperge

LSU Doctoral Dissertations

Rickettsia parkeri, a member of the spotted fever group of Rickettsia, is the agent of an emerging rickettsiosis in the southeastern United States and South America. Despite increased recognition of human cases, limited information is available regarding infection of invertebrate and vertebrate hosts for this emerging tick-borne disease. Towards development of a viable transmission model and to further characterize the pathology associated with R. parkeri infection, inbred mouse strains (A/J, Balb/C, C3H/HeJ, and C3H/HeN) were intravenously and intradermally inoculated with R. parkeri. The C3H/HeJ strain of mice were identified as the most susceptible to R. parkeri infection and were found …

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Biodiesel Production From Microalgae: Co-Location With Sugar Mills, Christian Lohrey Jan 2012

Biodiesel Production From Microalgae: Co-Location With Sugar Mills, Christian Lohrey

LSU Master's Theses

Co-location of algae production facilities with sugarcane mills in Louisiana was investigated as a way to address the bottlenecks for algal biodiesel production. Using the process modeling software Sugars™, an algal biodiesel production process was integrated with the operation of a typical-sized 10,000 metric tons/day (11,000 short tons/day) sugarcane mill to evaluate material and energy balances. A process is proposed wherein alga production is supplemented with energy, water, and CO2 available from a sugarcane mill. The Energy Return on Invested, EROI (a ratio of the energy produced/energy required) of the proposed algal biodiesel production process was 1.25; meaning 25% more …

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The Functional Morphology Of The Intermandibulo-Cervical Envelope Of The American Alligator (Alligator Mississippiensis), Brooke Hopkins Dubansky Jan 2012

The Functional Morphology Of The Intermandibulo-Cervical Envelope Of The American Alligator (Alligator Mississippiensis), Brooke Hopkins Dubansky

LSU Doctoral Dissertations

Alligators appear to swallow prey items that are large relative to their head size. Therefore, the intermandibulo-cervical envelope (i.e., the skin, Fascia superficialis, and constrictor musculature) was expected to be expandable. The three main layers of the intermandibulo-cervical envelope expand and recoil in tandem, but through different mechanisms. In the skin, which consists of hard-cornified scales and soft-cornified interscale skin segments, only the latter are expandable. Therefore, the width and orientation of the interscale skin segments determine the extent and direction of expansion of the skin. Whereas the intermandibular skin region is very expandable and enables the manipulation and crushing …

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Pregnancy And The Relationship To Age-Related Macular Degeneration, Ann Hardin Shaw Jan 2012

Pregnancy And The Relationship To Age-Related Macular Degeneration, Ann Hardin Shaw

LSU Master's Theses

The Macular Study was a case control study that evaluated if parity and other participant characteristics predicted the diagnosis of age-related macular degeneration (AMD). Women, compared to men, are at higher risk for AMD. AMD is one of the leading causes of blindness in the elderly population [1]. Docosahexaenoic acid (DHA, 22:6n-3) is a long-chain fatty acid that is essential for the structure and function of the eye. During pregnancy the growing fetus depletes the maternal stores of DHA through placental transfer. The fetus needs an ample supply of DHA for proper retinal and central nervous system development. To date …

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The Role Of Atypical Semantic Activation In Schizotypy: Implications For Odd Speech And Creativity, Kyle S. Minor Jan 2012

The Role Of Atypical Semantic Activation In Schizotypy: Implications For Odd Speech And Creativity, Kyle S. Minor

LSU Doctoral Dissertations

Individuals with schizophrenia tend to demonstrate patterns of atypical semantic activation, which are characterized by increased activation of weakly associated words within the semantic network. Although atypical semantic activation is associated with formal thought disorder, tangential speech, and poor long-term functioning in schizophrenia, very little is known about this variable in individuals with schizotypy, or the 10% of the population who demonstrate personality traits presumed to reflect genetic liability to schizophrenia. In this project, we employed highly sensitive laboratory procedures to test whether individuals with schizotypy (n = 45) display increased atypical semantic activation compared to a non-schizotypy group (n …

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A Critical Ethnography Of The Myrtles Plantation In St. Francisville, Louisiana With Ruminations On Hauntology, Holley Ann Vaughn Jan 2012

A Critical Ethnography Of The Myrtles Plantation In St. Francisville, Louisiana With Ruminations On Hauntology, Holley Ann Vaughn

LSU Doctoral Dissertations

This study examines how ghosts perform and are performed in southern Louisiana, particularly in the eclectic Baton Rouge enclave of Spanish Town and at The Myrtles Plantation in St. Francisville. Although The Myrtles, considered “one of the most haunted locations in the United States,” served as the genesis for this project, I explore the continuities and discontinuities of the histories and historicities of these two distinct places and my journeys between them over a five year period. Using critical ethnography as a grounding framework, the study draws from literature in tourism studies, performance studies, and other related areas of research, …

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Osmoregulation And Acid-Base Tolerance In Fish, Shujun Zhang Jan 2012

Osmoregulation And Acid-Base Tolerance In Fish, Shujun Zhang

LSU Doctoral Dissertations

The gill, with a large surface area in intimate contact with the environment, is the primary organ of ion and acid-base regulation in fish. These same characteristics make the gill epithelium particularly susceptible to a number of environmental perturbations, including osmotic challenges and metabolic acidosis. For most freshwater fish, the active uptake of the strong ions, sodium and chloride, are intimately linked with the excretion of acid and base equivalents, respectively. However, fish from the genus Fundulus, are unique in their apparent lack of active chloride uptake at the gills. This unique feature makes limiting Cl- loss through paracellular pathways …

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Investigating The Role Of Genetic Variation In Long Run Economic Outcomes, Charles Justin Cook Jan 2012

Investigating The Role Of Genetic Variation In Long Run Economic Outcomes, Charles Justin Cook

LSU Doctoral Dissertations

This dissertation empirically tests whether adaptations resulting from the Neolithic Revolution, or the widespread adoption of sedentary agriculture for sustenance, have led to economic differences. The development of sedentary agriculture constituted an environmen- tal shift from the previous sustenance method of hunting and gathering. This environmental shift resulted in the natural selection of certain traits. I seek to exploit differences in these traits to measure differing economic outcomes. Two main adaptations are considered in this work: the ability to consume milk, or lactose tolerance, and resistance to infectious Eurasian diseases, which is the result of genetic variation. The first essay …

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Essential Role Of Monocyte Chemoattractant Protein-1 In Gram-Negative Bacterial Pneumonia, Gayathriy Balamayooran Jan 2012

Essential Role Of Monocyte Chemoattractant Protein-1 In Gram-Negative Bacterial Pneumonia, Gayathriy Balamayooran

LSU Doctoral Dissertations

Acute gram-negative bacterial infections are a leading cause of mortality among the nosocomial infections. Increasing numbers of immunosuppressed individuals and growing numbers of antibiotic resistant strains make antibiotic treatment difficult. Neutrophils are the first cells recruited to the site of infection and are critical players in the host defense against gram-negative bacterial pneumonia. Therefore, identification of targets that boost neutrophil-associated host defense in the lung is essential in designing better therapies to control pulmonary infections. Production of chemokines is an important step for neutrophil recruitment. Monocyte chemoattractant protein-1 (MCP-1) is a chemokine that is important for monocyte and T-lymphocyte influx. …

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The Effects Of Carbon On Nitrogen Transformations In Restored Wetland And Wastewater Soils, Jared M. Theriot Jan 2012

The Effects Of Carbon On Nitrogen Transformations In Restored Wetland And Wastewater Soils, Jared M. Theriot

LSU Master's Theses

Since the industrialization of the Haber-Bosch process in the 1940’s, anthropogenic activity has nearly doubled the Earth’s nitrogen fixation. Furthermore, nitrate has become the number one groundwater contaminant in the United States and has harmful effects such as eutrophication, algal blooms, and pollution of drinking water. Soils from two sites influenced by high nitrate loading were examined to determine their biogeochemical integrity. First, the Loosahatchie Bar, located northwest of Memphis, Tennessee, is influenced by excess surface water nitrate loading by the Mississippi River. The Loosahatchie Bar is a newly restored wetland that now has similar hydrologic influence to an upstream …

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Investigations Into The Role Of Natural Organic Matter As An Interface Between Aquatic Organisms And Environmental Pollutants, Caroline Lillian Schneider Jan 2012

Investigations Into The Role Of Natural Organic Matter As An Interface Between Aquatic Organisms And Environmental Pollutants, Caroline Lillian Schneider

LSU Doctoral Dissertations

The impact of the continuous pollution of freshwater environments by multiple pollutants has not been well-studied. The goal of this research was to evaluate the toxicity of several modern pollutants in a model environment. The prokaryotic, unicellular blue-green algae Synechocystis WT6803 and the eukaryotic, multicellular Utterbackia imbecillis mussel larvae were studied along with Suwannee River natural organic matter (NOM). The toxicity response of the blue-green algae Synechocystis sp. was measured through changes in growth rates. The inorganic pollutant silver nanoparticles (0.044 μM) were toxic. Gold nanoparticles did not affect the growth rate. The addition of 15 mg/L NOM partially inhibited …

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A Study Of Children's Musical Play At The Little Gym, Alison Elaine Alexander Jan 2012

A Study Of Children's Musical Play At The Little Gym, Alison Elaine Alexander

LSU Master's Theses

The purpose of this study was to examine the ways music is used in classes at the Little Gym. It also attempted to uncover the benefits of the use of music in the classes as identified by the participants. This investigation of music at the Little Gym required the use of standard qualitative data collection strategies performed over the course of four months of fieldwork. Approximately sixty hours of observations were completed, both as an observer and a participant observer, and twelve semi-structured interviews were conducted with parents and teachers. Data analysis entailed transcribing and coding interviews, examining observations field …

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Quantification Of Nox Reduction Via Nitrate Accumulation On A Tio2 Photocatalytic Concrete Pavement, David James Osborn Jan 2012

Quantification Of Nox Reduction Via Nitrate Accumulation On A Tio2 Photocatalytic Concrete Pavement, David James Osborn

LSU Master's Theses

Field trials of photocatalytic pavements were recently initiated and are presently being considered by many states (e.g., Virginia, Texas, New York, and Missouri). Results from this study originate from the country’s first air-purifying asphalt and concrete photocatalytic pavements, constructed on Dec. 20, 2010. The test area is a pavement site located on the LSU campus. The objective of the study is to validate field photocatalytic degradation of NOx in a field environment by measuring the day to day accumulation of the oxidized byproduct; nitrate salts. The mass of nitrates, produced by the real life photocatalytic pavement, were measured. The measurement …

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Longitudinal Assessment Of Shifting Microbial Community Composition In Sandy Beaches Following The 2010 Deepwater Horizon Oil Spill And Remediation Efforts, Axita Ajaykumar Gupta Jan 2012

Longitudinal Assessment Of Shifting Microbial Community Composition In Sandy Beaches Following The 2010 Deepwater Horizon Oil Spill And Remediation Efforts, Axita Ajaykumar Gupta

LSU Master's Theses

Sandy beaches are geological zones parallel to the shoreline where high energy, open ocean unconsolidated sediments are deposited and reworked. Sandy beaches represent critical ecosystems that support a wide variety of underappreciated biodiversity. Prior to the 2010 Deepwater Horizon oil spill in the Gulf of Mexico, the diversity and function of microbial communities in supratidal beach sediments along the Gulf of Mexico coastlines were not well understood. It was unclear if possible community compositional changes would occur during and following exposure to oil, or what impact the remediation efforts, such as sand washing, would have to the microbial communities and …

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The Use Of A Mixed Chlorella Cyanobacteria Culture As A Protein Source For Aquaculture, Marjan Sadat Mohtashamian Jan 2012

The Use Of A Mixed Chlorella Cyanobacteria Culture As A Protein Source For Aquaculture, Marjan Sadat Mohtashamian

LSU Master's Theses

The increase in the global demand for fish feed in the last decades has resulted in the over exploitation of natural resources to produce more fishmeal supplies for aquaculture industry. The supply issues and high prices of fishmeal products have raised the incentives to seek for suitable alternatives to replace fishmeal protein. As a by-product of biofuel production process, residual microalgal biomass may be a low cost feed ingredient to the aquaculture diet. The potential of the use of a post lipid extraction Chlorella vulgaris/Leptolyngbya sp. Co-Culture (Louisiana co-culture) as a protein source in aquaculture feeds could help offset fishmeal. …

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Insights Into The Catalytic Mechanisms Of The Protein Enzymes, Pfkfb3 And Vlde, Using X-Ray Crystallography, Michael Christopher Cavalier Jan 2012

Insights Into The Catalytic Mechanisms Of The Protein Enzymes, Pfkfb3 And Vlde, Using X-Ray Crystallography, Michael Christopher Cavalier

LSU Doctoral Dissertations

This work describes the crystallographic studies of two enzymes and provides mechanistic insights into their respective catalytic processes. The first study investigates the molecular basis of the fructose-2,6-bisphosphatase reaction of the inducible isoform of the bifunctional enzyme, 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase (PFKFB3). The bifunctional enzyme is solely responsible for the cellular concentration of a regulator of glucose metabolism, fructose-2,6-bisphosphate. PFKB3 was investigated using the crystal structures of the enzyme in a phospho-enzyme intermediate state (PFKFB3-P•F-6-P), in a transition state-analogous complex (PFKFB3•AlF4), and in a complex with pyrophosphate (PFKFB3•PPi). With these structures, the structures of the Michaelis complex and the transition state were extrapolated. …

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Design And Analysis Of Cloaked Fluorophores For Rapid Detection And Visualization Of Cancer Cells Containing Nad(P)H:Quinone Oxidoreductase-1, William Silvers Jan 2012

Design And Analysis Of Cloaked Fluorophores For Rapid Detection And Visualization Of Cancer Cells Containing Nad(P)H:Quinone Oxidoreductase-1, William Silvers

LSU Doctoral Dissertations

The development of fluorogenic substrates for real-time tumor cell detection has led to a vastly expanding field for personal oncology. Fluorophores have been studied as appendages to larger scaffolds leading to accumulation of these dyes in tumor cells or their surrounding environment, taking advantage of tumor anatomy. A new class of fluorophores has been developed in which the dye is an active participant in the mechanism of cancer cell detection. These dyes have been conjugated such that their fluorescence has been eliminated or altered and will undergo a change to reveal their fluorescent signal upon activation by a mechanism that …

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Equipped To Serve Our Youth: A Phenomenological Study Of 4-H Extension Youth Educators' Perceptions Of The Value Of Mentoring, Allison Ann Bruchhaus Jan 2012

Equipped To Serve Our Youth: A Phenomenological Study Of 4-H Extension Youth Educators' Perceptions Of The Value Of Mentoring, Allison Ann Bruchhaus

LSU Doctoral Dissertations

Challenging economic times and increasingly complex social contexts intensify the demand for organizations to focus on areas of human resource development that positively contribute to developmental relationships of employees. One such method is the implementation of a formal mentoring program. Mentoring is especially important for 4-H youth educators. Youth educators are usually specialized in program development among other areas and plan, implement, and evaluate programs with the intent of bettering the quality of life for youth. The dynamics of working with today’s youth mandate effective professional development and developmental relationships for career enhancement. This study was developed for the researcher …

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Habitat Use, Movements, And Ecology Of Female Mottled Ducks On The Gulf Coast Of Louisiana And Texas, Bruce Edward Davis Jan 2012

Habitat Use, Movements, And Ecology Of Female Mottled Ducks On The Gulf Coast Of Louisiana And Texas, Bruce Edward Davis

LSU Doctoral Dissertations

Mottled ducks (Anas fulvigula) are the most abundant breeding waterfowl in the coastal marshes of Louisiana and Texas. Mottled ducks are non-migratory and heavily dependent on coastal marsh habitats; they must satisfy all of their annual resource needs from within the Gulf Coast region. Coastal marsh habitats are being rapidly lost or degraded in Louisiana and Texas. The hydrology of many coastal marsh habitats has been altered by anthropogenic activity and natural factors. Parameters related to Mottled Duck habitat use and movements in this altered environment are poorly understood, and managers need information on vital rates of Mottled Ducks in …

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Projected Performances: The Phenomenology Of Hybrid Theater, David Edward Coley Jan 2012

Projected Performances: The Phenomenology Of Hybrid Theater, David Edward Coley

LSU Doctoral Dissertations

Throughout the 20th century, mediatized forms gained prominence and eclipsed the theater as a site of cultural power and popularity. Because of this tension, performance theorists like Peggy Phelan framed the definition of theater through its inherent differences from film and television. Other theorists like Philip Auslander problematized this distinction, particularly due to television’s similarities to live performance. The cinema, however, has remained an opponent to performance, ignored in favor of technologies that more readily promote a sense of “liveness.” In Projected Performances, I argue that film projection is more closely related to performance than previously thought, particularly when viewed …

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An Exploratory Study Of Informal Science Learning By Children Ages 2-12 Years At Selected U.S. Children's Gardens, Mary Flake Legoria Jan 2012

An Exploratory Study Of Informal Science Learning By Children Ages 2-12 Years At Selected U.S. Children's Gardens, Mary Flake Legoria

LSU Doctoral Dissertations

ABSTRACT This exploratory study was conducted at four children’s gardens in major botanical gardens across the United States to determine if children became more aware and knowledgeable of plants while visiting these gardens. This was determined through the children’s garden stakeholders’ perspectives; the stakeholders of this study were the children and parents who visited the gardens. Their views were acquired through on-site observations and interviews. The purposive sample comprised 64 participants including 40 children (19 girls and 21 boys, ages 2- 12 years). There were 18 mothers, 3 fathers, 3 grandmothers, and 1 grandfather. The 40 children were observed and …

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Effect Of Embalming On The Decomposition Of Pigs, Michael Anne Keaton Jan 2012

Effect Of Embalming On The Decomposition Of Pigs, Michael Anne Keaton

LSU Master's Theses

Numerous studies have been conducted on the taphonomy of human remains since the inception of forensic anthropology. Through these studies, the rates of decomposition, animal activity, and insect activity have been investigated in a diverse range of situations. One area where few studies have been carried out concerns embalmed bodies left to decompose in the open. This study considers the effect of embalming fluid on the decomposition rate of bodies. Using the pig as an experimental model, three juvenile specimens were injected with increasing levels of formaldehyde –1%, 5%, and 10%– and a fourth pig, the control, was not embalmed. …

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Climate Change Policy In The European Union: Examining The Emissions Trading System, Tabitha Marie Cale Jan 2012

Climate Change Policy In The European Union: Examining The Emissions Trading System, Tabitha Marie Cale

LSU Doctoral Dissertations

The European Union Emissions Trading System (EU ETS) is a cap-and-trade program regulating the carbon emissions of specific industrial facilities and is the EU’s primary policy mechanism for complying with emissions reduction targets found in the Kyoto Protocol. This dissertation examines the overall effectiveness of the EU ETS and more specifically what factors explain why some member states are more successful at reducing their carbon emissions than others. OLS and logistic regression models are constructed as well as qualitative case studies of Sweden, Denmark, Portugal and Greece, to examine observed differences in emissions in all 27 EU member states from …

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Between Bodies: (Re)Constructing The Corps Québécois In Roch Carrier's La Guerre, Yes Sir!, Tara Beth Smithson Jan 2012

Between Bodies: (Re)Constructing The Corps Québécois In Roch Carrier's La Guerre, Yes Sir!, Tara Beth Smithson

LSU Master's Theses

Published during Québec’s Révolution Tranquille, but set during the final phase of World War II, Roch Carrier’s novel La guerre, yes sir! (1968) chronicles how one community copes with the sober homecoming of its first “son of the village” to die in the war. The novel centers on the fallen Corriveau’s repatriation to what was then considered French Canada. The body’s passage from one realm, in Europe, associated with French Canada’s multi-layered, quasi-colonial control, to another, in soon-to-be Quebec, associated with the province’s self-definition and burgeoning sense of sovereignty, offers an allegorical commentary on the Québécois people’s passage from a …

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Direction Of Mistuning, Magnitude Of Cent Deviation, And Timbre As Factors In Musicians' Pitch Discrimination In Simultaneous And Sequential Listening Conditions, Norman Alan Clark Jan 2012

Direction Of Mistuning, Magnitude Of Cent Deviation, And Timbre As Factors In Musicians' Pitch Discrimination In Simultaneous And Sequential Listening Conditions, Norman Alan Clark

LSU Doctoral Dissertations

The main purpose of this study was to investigate high school and college wind instrumentalists’ pitch discrimination when judging pitch pairs separated by 0, 5, 7.5, and 10 cents. Participants listened via headphones to a pre-recorded two section perception test; each section (one sequential and one simultaneous) containing 56 tone pairs. Each pair consisted of an in-tune reference tone followed by a test tone of the same pitch (B-flat4 or E4), which was either identical in tuning or altered to one of six mistunings. Tones also varied in timbre (square or sawtooth wave) with the reference and test tones being …

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Forage Systems For Finishing Steers In South Louisiana, Jose M. Rodriguez Jan 2012

Forage Systems For Finishing Steers In South Louisiana, Jose M. Rodriguez

LSU Master's Theses

Research has found conflicting results on animal performance and carcass traits associated with the use of forage as the primary feed source for finishing cattle. Consumer interest in forage-fed products has grown and little research has been done comparing performance of forage-fed animals and beef finished on different forages. Spring weaned calves (n=54; 257 ± 2.5 kg; 3/8 Gelbvieh, 3/8 Red Angus, and 1/4 Brahman) were used in the evaluation of three forage systems (S1, S2, and S3) on a 100% forage diet in two consecutive years (June 2009 and 2010). Steers were divided into 9 groups based on initial …

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Syntheses And Characterization Of Water-Soluble Phythalocyanines For Diagnosis And Treatment Of Cancer, Benson Getenga Ongarora Jan 2012

Syntheses And Characterization Of Water-Soluble Phythalocyanines For Diagnosis And Treatment Of Cancer, Benson Getenga Ongarora

LSU Doctoral Dissertations

Ongarora, Benson Getenga, B.S., Moi University, 2005 Doctor of Philosophy, Fall Commencement, 2012 Major: Chemistry Syntheses and Characterization of Water-Soluble Phthalocyanines for Diagnosis and Treatment of Cancer Dissertation directed by Professor M.Graҫa H. Vicente Pages in dissertation, xi. Words in abstract, 251. ABSTRACT Chapter 1 describes the general properties of phthalocyanines, synthesis of metallo-phthalocyanines, their photophysical features and their uses. The concepts of PDT and targeted therapeutics are also introduced. Chapter 2 describes the syntheses, characterization, photophysical studies and biological evaluation of cationic phthalocyanines. The trimethylaminophenoxy substituted phthalocyanines were synthesized through statistical condensation method, which gave a statistical mixture of …

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An Investigation Into Urban Elementary Teachers' Educational Beliefs In Regards To Teaching Writing: Comparing Experiences And Self-Reported Beliefs To Teacher Practices, Shalanda Stanley Jan 2012

An Investigation Into Urban Elementary Teachers' Educational Beliefs In Regards To Teaching Writing: Comparing Experiences And Self-Reported Beliefs To Teacher Practices, Shalanda Stanley

LSU Doctoral Dissertations

This six week study investigated six urban elementary teachers’ educational beliefs in regards to teaching writing, comparing their personal histories as writers with their self-reported beliefs on writing and teaching writing, with that of their teacher practices. A further analysis examined how closely aligned their teacher practices were to research-validated practices. During this ethnographic case study, three questions were explored. These questions were: (a) How do teachers’ personal histories with writing inform their beliefs regarding writing in general, as well as their beliefs on teaching writing?, (b) How do teachers’ educational beliefs in regards to teaching writing inform their instructional …

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Invasion Of Smooth Brome Into North American Tall-Grass Prairies: Impact On Native Plant/Herbivore Species And Mechanisms Responsible For Successful Invasion, Forrest Paul Dillemuth Jan 2012

Invasion Of Smooth Brome Into North American Tall-Grass Prairies: Impact On Native Plant/Herbivore Species And Mechanisms Responsible For Successful Invasion, Forrest Paul Dillemuth

LSU Doctoral Dissertations

Research in invasion ecology has focused on developing ecological theory that can predict how invasive species interact with invaded communities. However, empirical support for theoretical predictions has been inconsistent. Inconsistencies may be attributed to the lack of data in three core areas; (1) field data with enough resolution to determine population dynamics of invasive species in relation to native species, (2) manipulative field experiments that encapsulate natural variation found among micro-habitats, and (3) field data that incorporate effects of invasive species within and among spatial scales. This dissertation has addressed these concerns by examining the mechanisms responsible for the successful …

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