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Guide For “Los Isleños” Field Trip, Conference Of Latin Americanist Geographers, New Orleans, 2017, Andrew Sluyter
Guide For “Los Isleños” Field Trip, Conference Of Latin Americanist Geographers, New Orleans, 2017, Andrew Sluyter
Faculty Publications
No abstract provided.
Ant Diversity And Community Structure In Coastal Dunes And Wetlands, Xuan Chen
Ant Diversity And Community Structure In Coastal Dunes And Wetlands, Xuan Chen
LSU Doctoral Dissertations
How do many species live in a certain place? How does species composition changes among habitats? And what mechanisms decide species distribution? These are fundamental questions in community ecology. I first investigated ant diversity in two coastal ecosystems (dunes and wetlands) in the northern Gulf of Mexico, and then used the distribution patterns to infer assembly processes that structure ant communities in coastal areas. Specifically, the following hypotheses are tested: (1) coastal systems support lower ant diversity due to the unsuitable environment; (2) species living near the seashore are a subset of those exist near inland; (3) deterministic processes are …
Temporal Dynamics Of Benthic Responses To Habitat Disturbance In Coastal Plain Headwaters Of Southwestern Louisiana, Catherine Elizabeth Murphy
Temporal Dynamics Of Benthic Responses To Habitat Disturbance In Coastal Plain Headwaters Of Southwestern Louisiana, Catherine Elizabeth Murphy
LSU Doctoral Dissertations
Weak biotic responses to habitat gradients within Northern Gulf of Mexico streams have been attributed to spatial and temporal variability. Landscape and in-stream habitat descriptions are presented for watersheds within Pleistocene terraces of the Coastal Plains geomorphic province of Louisiana, USA. Geologic influences on stream habitat were inferred by comparing multivariate ordinations on physicochemical measurements between terraces. Seasonal variability was assessed during a drought year (2011) and a typical water year (2013). Within coastal plains of Louisiana, stream condition was more similar within terraces than within river basins. Permutational MANOVA models indicated significantly different stream habitat between Uplands and Prairie, …
Policies Of Loss: Coastal Erosion And The Struggle To Save Louisiana's Wetlands, Rebecca B. Costa
Policies Of Loss: Coastal Erosion And The Struggle To Save Louisiana's Wetlands, Rebecca B. Costa
LSU Doctoral Dissertations
Since the 1930s, Louisiana has lost approximately 1,800 square miles of land due to the subsidence of the state’s coastal wetlands. By the early 1970s, public officials and private citizens were starting to become aware of the crisis on the coast, and a broad agreement developed among state and federal representatives that action was needed to address the problem. Over the course of nearly forty years, policymakers in Louisiana and Washington, D.C., implemented a series of laws and regulations meant to protect vulnerable ecosystems like the state’s wetlands. In the 1980s, officials also started crafting policies to help restore Louisiana’s …
Re-Examining And Redefining The Concepts Of Community, Justice, And Masculinity In The Works Of René Depestre, Carlos Fuentes, And Ernest Gaines, Jacqueline Nicole Zimmer
Re-Examining And Redefining The Concepts Of Community, Justice, And Masculinity In The Works Of René Depestre, Carlos Fuentes, And Ernest Gaines, Jacqueline Nicole Zimmer
LSU Doctoral Dissertations
In La Communauté desoeuvrée (1983) French philosopher Jean-Luc Nancy describes how a community is creating by bringing its members together under a collective identity. The invention of myths, such as the myth of racial superiority and the mythic revolutionary community, functions to sustain the hegemonic dominance wielded in Haiti by the United States and later by François Duvalier, the Porfiriato and its aftermath in Mexico, and white society in the United States Deep South. These myths often engender policies founded in the inhospitable treatment of those who are deemed lesser or ‘other’. Nancy’s conception of being singular plural posits that …
The Mnemonic Maid: Joan Of Arc In Public Memory, Tara Beth Smithson
The Mnemonic Maid: Joan Of Arc In Public Memory, Tara Beth Smithson
LSU Doctoral Dissertations
This dissertation examines the relationship between Joan of Arc, postcolonial identity, and public memory. Since her repopularization in the nineteenth century, Joan of Arc has become one of the most emblematic figures of French history. Commemorated in public statuary, celebrated by writers, and championed by politicians, la Pucelle’s story is tantamount to national myth. While Joan of Arc’s centrality to France’s iconic imagining of itself during the spread of its empire has received much critical attention, her postcolonial afterlife remains understudied. This project offers a counterpoint to the prevailing assumption that Joan of Arc has few implications for postcolonial studies …
Living On The Edge: An Assessment Of The Habitat Use Of Waterbirds In Estuarine Wetlands Of Barataria Basin, La, Brett Ashley Patton
Living On The Edge: An Assessment Of The Habitat Use Of Waterbirds In Estuarine Wetlands Of Barataria Basin, La, Brett Ashley Patton
LSU Master's Theses
The wetlands of Louisiana are losing area at the rapid rate of 42.9 km2 yr-1 and the trend is expected to continue. This combined with expected sea-level rise will likely cause large shifts in vegetation and salinity regimes that will affect the wildlife species reliant on these ecosystems. Waterbirds serve as indicator species of ecosystem health in estuarine wetland habitats; therefore, these species are often the targets of wetland management goals in Louisiana. However, many proposed wetland restoration projects are focused primarily on social impacts with only a few specific waterbird species designated for management. The majority of these waterbird …
Fishes Associated With Oil And Gas Platforms In Louisiana's River-Influenced Nearshore Waters, Ryan Thomas Munnelly
Fishes Associated With Oil And Gas Platforms In Louisiana's River-Influenced Nearshore Waters, Ryan Thomas Munnelly
LSU Master's Theses
A distinctive feature of coastal Louisiana is the unrivaled network of oil and gas installations (platforms) extending from inshore waters to the deep Gulf of Mexico. Since 2007 there has been a 38% reduction in platform numbers with the highest removal rates occurring in shallow (< 18 m) nearshore waters. Many fishes and invertebrates are attracted to platforms, presenting a unique opportunity to study detailed species-specific responses to the river-influenced hydrographic characteristics of Louisiana’s nearshore zone (5–25 km water depth). Prior studies of fishes around platforms focused on a few relatively large platforms in water depths ≥ 18 m. However, about one-third of all platforms are small, unmanned and non-drilling platforms located in waters < 18 m depth. Paired video and hydrographic data were collected at 150 small platforms in < 18 m water depth during the summers of 2013–2014. Fifty-four species of fishes were associated with small platforms. The assemblage(s) included juveniles of 29 species, indicating the importance of nearshore platforms as diverse nursery habitat. The coastal zone was divided into three regions based on broad-scale interactions between freshwater input and bathymetry driving major distinctions in interregional hydrography and fish assemblages. Co-occurring within this expansive artificial reef network is the second largest hypoxic area (dissolved oxygen (DO) < 2.0 mg l−1) on Earth. Platforms offer reef-like habitat features in the upper water column that may offer refugia for some reef-associated species during hypoxic events. Significant intraregional differences in physicochemical features were related to the presence of hypoxia (defined as DO < 50% saturation), as well as the distribution of sandy shoals. Eleven species accounted for most of the assemblage dissimilarities, composing ~93% of fishes observed. Habitat suitability indices for these 11 species provided information about habitat selection across horizontal and vertical physicochemical gradients throughout the coastal zone, and within hypoxic and well-oxygenated stratified water columns. East Bay, near the outlet of the Mississippi River, exhibited less hypoxia and a distinct fauna that included four adult goliath grouper (Epinephelus itajara). This endangered fish was observed during spawning season (summer), suggesting that East Bay might support a spawning aggregation.
Spatio-Temporal Modeling Of Louisiana Land Subsidence Using High Resolution Geo-Spatial Data, Hanyu Xiang
Spatio-Temporal Modeling Of Louisiana Land Subsidence Using High Resolution Geo-Spatial Data, Hanyu Xiang
LSU Doctoral Dissertations
Problems caused by subsidence are very common in many areas of the world, and this kind of problems may be serious and threatening to living people in Louisiana. Adverse subsidence in Louisiana will cause serious problems, such as excessive wetland formation or land loss, if we can’t make appropriate treatments, and this topic will also be what we focus on in this research (Kent and Dokka 2012). For subsidence survey, we can use three kinds of common techniques, leveling, InSAR (Interferometric Synthetic Aperture Radar) and GPS observation (Lu, C. et al. 2012). In this research, high accuracy of subsidence data …
Hydrodynamic Modeling Of Newly Emergent Coastal Deltaic Floodplains, Alexandra Christensen
Hydrodynamic Modeling Of Newly Emergent Coastal Deltaic Floodplains, Alexandra Christensen
LSU Master's Theses
Coastal deltaic floodplains provide an important ecosystem service by removing or retaining nitrate from enriched riverine water. Wetland plants, soils, and microbes within these floodplains use nitrate through uptake, burial, and denitrification, thereby reducing the impact of nitrate on algal blooms and hypoxia in the Gulf of Mexico. However, these processes depend on the physical, biological, and chemical conditions within the floodplain. Understanding and characterizing the hydrodynamics of these systems and the relative impact of river, tide, and wind forcings are the first steps in understanding the biogeochemical processes controlling nitrate removal. Motivated by the desire to identify biogeochemical hotspots …
Tropospheric Ozone Prediction With Land Cover Regression In Baton Rouge, Louisiana, Mallory Nance Thomas
Tropospheric Ozone Prediction With Land Cover Regression In Baton Rouge, Louisiana, Mallory Nance Thomas
LSU Master's Theses
Ground level ozone (O3) is a pollutant of great public health concern. Spatial interpolation techniques provide powerful tools in estimating O3 exposure, but many fall short when predicting O3 on complex surfaces, especially given the high local variability typically associated with O3 data. Like most other locations, the Baton Rouge, Louisiana, O3 non-attainment zone (BRNZ) is plagued by a sparse density of O3 monitoring stations. This research explores land use regression (LUR) as an alternative spatial prediction method in and around the BRNZ. Multiple years of data are used to partially compensate for the small sample of spatial points. To …