subject:(Chenier Plain)

Louisiana State University

1. Lee, Cherie' Jenae. Heavy mineral analysis of the Pecan Island complex, Louisiana Chenier Plain, southwest Louisiana.

Degree: MS, Earth Sciences, 2007, Louisiana State University

URL: etd-08092007-160251 ; https://digitalcommons.lsu.edu/gradschool_theses/2040

► This study reports the results of a heavy mineral analysis of samples from Pecan Island and associated ridges on the Louisiana Chenier Plain. The goal… (more)

▼ This study reports the results of a heavy mineral analysis of samples from Pecan Island and associated ridges on the Louisiana Chenier Plain. The goal of the study is to provide additional insight on the origins of the sand comprising the ridges. Chenier plains are multi-membered, progradational ridge-interridge mudflat sequences (Augustinus, 1989). The various suggested sources of the sand grains include: the Mississippi River, especially the Teche sub-delta; the Mermentau and Calcasieu Rivers; and the reworking of older mudflat and chenier ridges. Several liters of sand were collected from a depth of 0.5 to 2.0 meters at locations near the crest of the ridges, on Pecan Island, Sweet Bay Ridge, and Cane Ridge. Flank samples were collected at three locations on Pecan Island. The samples were separated using sieves (very fine sand, 3.5-4.0ö, and coarse silt, 4.0-4.5ö) and the heavy minerals concentrated with sodium polytungstate. Qualitative analyses by energy dispersive X-ray analysis with grain mount on the SEM (Scanning Electron Microscope) revealed the presence of epidote, garnet, ilmenite, pyrobole, sphene, spinel, zircon, staurolite, kyanite, apatite, biotite, iron oxides, chromite, corundum, dolomite, rutile, and barite. Approximately 100 grains per sample were used to estimate percent abundance of the heavy minerals. MANOVA, an ANOVA that allows for testing with multiple dependent variables was used to identify statistically significant differences in the abundance of the seven most common minerals (epidote, garnet, ilmenite, pyrobole, sphene, spinel, and zircon) with respect to sample site, location on the ridge crest, crest versus flank position (only for Pecan Island), and among the ridges. At each level, the null hypothesis was that samples were homogeneous. Most samples were homogeneous at the first three levels of analysis. The three ridges contained significant differences in epidote, garnet, pyrobole, sphene, spinel and zircon. They have distinct assemblages but the values overlap considerably making it difficult to identify a particular ridge by its heavy minerals. The differences in mineralogy confirm the general theory of ridge origin from a variety of source, including past and present mudflats, cheniers and beach ridges. Specific sources for the heavy minerals could not be identified.

Subjects/Keywords: Louisiana Chenier Plain; heavy minerals

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APA (6^th Edition):

Lee, C. J. (2007). Heavy mineral analysis of the Pecan Island complex, Louisiana Chenier Plain, southwest Louisiana. (Masters Thesis). Louisiana State University. Retrieved from etd-08092007-160251 ; https://digitalcommons.lsu.edu/gradschool_theses/2040

Chicago Manual of Style (16^th Edition):

Lee, Cherie' Jenae. “Heavy mineral analysis of the Pecan Island complex, Louisiana Chenier Plain, southwest Louisiana.” 2007. Masters Thesis, Louisiana State University. Accessed March 08, 2021. etd-08092007-160251 ; https://digitalcommons.lsu.edu/gradschool_theses/2040.

MLA Handbook (7^th Edition):

Lee, Cherie' Jenae. “Heavy mineral analysis of the Pecan Island complex, Louisiana Chenier Plain, southwest Louisiana.” 2007. Web. 08 Mar 2021.

Vancouver:

Lee CJ. Heavy mineral analysis of the Pecan Island complex, Louisiana Chenier Plain, southwest Louisiana. [Internet] [Masters thesis]. Louisiana State University; 2007. [cited 2021 Mar 08]. Available from: etd-08092007-160251 ; https://digitalcommons.lsu.edu/gradschool_theses/2040.

Council of Science Editors:

Lee CJ. Heavy mineral analysis of the Pecan Island complex, Louisiana Chenier Plain, southwest Louisiana. [Masters Thesis]. Louisiana State University; 2007. Available from: etd-08092007-160251 ; https://digitalcommons.lsu.edu/gradschool_theses/2040

Louisiana State University

2. Rosen, Timothy. Long-term total suspended sediment yield of coastal Louisiana rivers with spatiotemporal analysis of the Atchafalaya River Basin and Delta Complex.

Degree: MS, Environmental Sciences, 2012, Louisiana State University

URL: etd-01152013-123524 ; https://digitalcommons.lsu.edu/gradschool_theses/1798

► The modern day Mississippi River Delta Plain and the Louisiana Chenier Plain have been greatly altered through anthropogenic changes to course and hydrological conditions of… (more)

▼ The modern day Mississippi River Delta Plain and the Louisiana Chenier Plain have been greatly altered through anthropogenic changes to course and hydrological conditions of the Mississippi River and local rivers, most notably by levees that have excluded the Mississippi River from the delta plain. This has slowed accretion and increased land loss destroying vast quantities of marsh, endangering many coastal communities. This master’s thesis examined long-term total suspended sediment yield of four Chenier Plain rivers, total suspended sediment yield of the Mississippi River under different flow conditions, and total suspended sediment dynamics of the Atchafalaya River in relation to Atchafalaya River Delta Complex growth and Atchafalaya River Basin sedimentation. Results estimated average annual total suspended sediment yield to coastal Louisiana of 176.3 megatonnes (MT), with the Mississippi River contributing 72% and the Atchafalaya River contributing 28%. The Chenier Plain rivers contributed a negligible amount to this total, averaging annually 342,950 tonnes, with the Sabine contributing 62% to this total (213,100 tonnes), while the Calcasieu River supplied 46,850 tonnes, Mermentau River 40,200 tonnes, and Vermilion River 42,800 tonnes. The hydrograph-based approach for quantification of actual available total suspended sediment of the Mississippi River identified the rising limb of the flood pulse during Action Stage (12.1-14.6 m) and Flood Stage (14.6-16.8 m) maximized total suspended sediment with 28.9 MT supplied. Atchafalaya River Delta Complex growth rate was 2.8 km2 yr-1 (1989-2010). Both Atchafalaya River Morgan City subdelta (ARSD) and Wax Lake Outlet Subdelta (WLSD) growth rates were influenced by large floods that helped maintain positive growth rates, and tropical systems that decreased growth rates over the period. Average annual sedimentation rate in the Atchafalaya River Basin (ARB) was estimated between 30.4-79.1 mm yr-1, while total suspended sediment retention averaged 5.3 MT yr-1 (1996-2010), but interannual variation demonstrates that the ARB has reached an equilibrium and resembles a fluvially dominated system rather than lacustrine or palustrine system. Results from this study provide an exhaustive understanding of riverine sediment availability to coastal Louisiana and the impacts on coastal evolution, providing information that land managers can use to model restoration of coastal Louisiana.

Subjects/Keywords: Mississippi; Louisiana; Chenier Plain; River Hydrology; Sediment; Coastal; Atchafalaya

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APA (6^th Edition):

Rosen, T. (2012). Long-term total suspended sediment yield of coastal Louisiana rivers with spatiotemporal analysis of the Atchafalaya River Basin and Delta Complex. (Masters Thesis). Louisiana State University. Retrieved from etd-01152013-123524 ; https://digitalcommons.lsu.edu/gradschool_theses/1798

Chicago Manual of Style (16^th Edition):

Rosen, Timothy. “Long-term total suspended sediment yield of coastal Louisiana rivers with spatiotemporal analysis of the Atchafalaya River Basin and Delta Complex.” 2012. Masters Thesis, Louisiana State University. Accessed March 08, 2021. etd-01152013-123524 ; https://digitalcommons.lsu.edu/gradschool_theses/1798.

MLA Handbook (7^th Edition):

Rosen, Timothy. “Long-term total suspended sediment yield of coastal Louisiana rivers with spatiotemporal analysis of the Atchafalaya River Basin and Delta Complex.” 2012. Web. 08 Mar 2021.

Vancouver:

Rosen T. Long-term total suspended sediment yield of coastal Louisiana rivers with spatiotemporal analysis of the Atchafalaya River Basin and Delta Complex. [Internet] [Masters thesis]. Louisiana State University; 2012. [cited 2021 Mar 08]. Available from: etd-01152013-123524 ; https://digitalcommons.lsu.edu/gradschool_theses/1798.

Council of Science Editors:

Rosen T. Long-term total suspended sediment yield of coastal Louisiana rivers with spatiotemporal analysis of the Atchafalaya River Basin and Delta Complex. [Masters Thesis]. Louisiana State University; 2012. Available from: etd-01152013-123524 ; https://digitalcommons.lsu.edu/gradschool_theses/1798

Universiteit Utrecht

3. Augustinus, P.G.E.F. The changing shoreline of Suriname (South America).

Degree: 1978, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/263140

► The Surinam coast forms part of the extensive tropical mud coast between the Amazon River (Brazil) and the Orinoco River (Venezuela). It is classified as… (more)

▼ The Surinam coast forms part of the extensive tropical mud coast between the Amazon River (Brazil) and the Orinoco River (Venezuela). It is classified as a low to medium energy coast. A substantially longshore supply of mud originates from the Amazon River. The fine grained sediment (pelite) is transported in suspension and by steadily westward migrating shoreface-attached mudflats. These mud shoals are separated by intermudflat troughs. The mudflats migrate in a westward direction owing to erosion of their east side and accretion of the west side. The pelite contains a small fine sandy component. There is mineralogical evidence that the Amazon River is the source of this sand. It is winnowed from the mud and particularly along the western part of the Surinam coast it forms cheniers in a few cases. Along the eastern part of the Surinam coast, the cheniers are built up of medium to coarse sand which is supplied by the Marowijne River and the coast of French Guiana. Shell clastics originate from the shelf. Cheniers are perched, shallow based beach ridges, resting on clay. Those which are built up from alongshore supplied medium to coarse sediment develop at approximately mean high-water level. The formation of fine sandy cheniers in west Surinam depends on winnowing of the small sandy component form the pelite. It therefore begins at a much lower level (around mean low water). Sedimentary structures of both types of cheniers show much similarity. The underlying clayey deposits appear to be laminated. Locally the horizontal lamination is strongly bioturbated. The mudflats are overgrown with mangroves at the higher levels. Avicennia germinans is the principal representative. This type of coast is called a mud accretionary coast. Although the volume of the cheniers is reduced when compared with that of the mud deposits, they have a dominant effect on the coastal landscape. When a chenier accretes seaward a broad chenier complex with important protective properties develops: a sand accretionary coast. When this chenier is eroded the protective property gradually disappears. First a straight erosion coast with a landward receding chenier is formed (due to wash-over processes), while the exposed clay surface is impacted by the waves. Finally the volume of the chenier may decrease to such an extent that protective effects no longer exist. The erosion protrudes through existing and newly formed straight erosion channels and an indented erosion coast, characterized by bights and capes, develops. Cheniers may also impede the drainage of the landward mangrove swamps. This may cause the death of the mangrove vegetation by asphyxiation or hypersalinity of soil and/or water. As a result an Avicennia forest may change into an Avicennia “churchyard”. Afterwards a new pioneer vegetation may settle and a saltmarsh develops. This may gradually become a mangrove swamp again. There appears to be a close relationship between the various landscapes and the processes of sedimentation and erosion. This can be organized into a system…

Subjects/Keywords: Earth Sciences; coastal accretion; coastal erosion; chenier; chenier plain; mud; mudflats; Surinam

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APA (6^th Edition):

Augustinus, P. G. E. F. (1978). The changing shoreline of Suriname (South America). (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/263140

Chicago Manual of Style (16^th Edition):

Augustinus, P G E F. “The changing shoreline of Suriname (South America).” 1978. Doctoral Dissertation, Universiteit Utrecht. Accessed March 08, 2021. http://dspace.library.uu.nl:8080/handle/1874/263140.

MLA Handbook (7^th Edition):

Augustinus, P G E F. “The changing shoreline of Suriname (South America).” 1978. Web. 08 Mar 2021.

Vancouver:

Augustinus PGEF. The changing shoreline of Suriname (South America). [Internet] [Doctoral dissertation]. Universiteit Utrecht; 1978. [cited 2021 Mar 08]. Available from: http://dspace.library.uu.nl:8080/handle/1874/263140.

Council of Science Editors:

Augustinus PGEF. The changing shoreline of Suriname (South America). [Doctoral Dissertation]. Universiteit Utrecht; 1978. Available from: http://dspace.library.uu.nl:8080/handle/1874/263140

4. Augustinus, P.G.E.F. The changing shoreline of Suriname (South America).

Degree: 1978, University Utrecht

URL: https://dspace.library.uu.nl/handle/1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; 1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; https://dspace.library.uu.nl/handle/1874/263140

► The Surinam coast forms part of the extensive tropical mud coast between the Amazon River (Brazil) and the Orinoco River (Venezuela). It is classified as… (more)

▼ The Surinam coast forms part of the extensive tropical mud coast between the Amazon River (Brazil) and the Orinoco River (Venezuela). It is classified as a low to medium energy coast. A substantially longshore supply of mud originates from the Amazon River. The fine grained sediment (pelite) is transported in suspension and by steadily westward migrating shoreface-attached mudflats. These mud shoals are separated by intermudflat troughs. The mudflats migrate in a westward direction owing to erosion of their east side and accretion of the west side. The pelite contains a small fine sandy component. There is mineralogical evidence that the Amazon River is the source of this sand. It is winnowed from the mud and particularly along the western part of the Surinam coast it forms cheniers in a few cases. Along the eastern part of the Surinam coast, the cheniers are built up of medium to coarse sand which is supplied by the Marowijne River and the coast of French Guiana. Shell clastics originate from the shelf. Cheniers are perched, shallow based beach ridges, resting on clay. Those which are built up from alongshore supplied medium to coarse sediment develop at approximately mean high-water level. The formation of fine sandy cheniers in west Surinam depends on winnowing of the small sandy component form the pelite. It therefore begins at a much lower level (around mean low water). Sedimentary structures of both types of cheniers show much similarity. The underlying clayey deposits appear to be laminated. Locally the horizontal lamination is strongly bioturbated. The mudflats are overgrown with mangroves at the higher levels. Avicennia germinans is the principal representative. This type of coast is called a mud accretionary coast. Although the volume of the cheniers is reduced when compared with that of the mud deposits, they have a dominant effect on the coastal landscape. When a chenier accretes seaward a broad chenier complex with important protective properties develops: a sand accretionary coast. When this chenier is eroded the protective property gradually disappears. First a straight erosion coast with a landward receding chenier is formed (due to wash-over processes), while the exposed clay surface is impacted by the waves. Finally the volume of the chenier may decrease to such an extent that protective effects no longer exist. The erosion protrudes through existing and newly formed straight erosion channels and an indented erosion coast, characterized by bights and capes, develops. Cheniers may also impede the drainage of the landward mangrove swamps. This may cause the death of the mangrove vegetation by asphyxiation or hypersalinity of soil and/or water. As a result an Avicennia forest may change into an Avicennia “churchyard”. Afterwards a new pioneer vegetation may settle and a saltmarsh develops. This may gradually become a mangrove swamp again. There appears to be a close relationship between the various landscapes and the processes of sedimentation and erosion. This can be organized into a system…

Subjects/Keywords: coastal accretion; coastal erosion; chenier; chenier plain; mud; mudflats; Surinam

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Augustinus, P. G. E. F. (1978). The changing shoreline of Suriname (South America). (Doctoral Dissertation). University Utrecht. Retrieved from https://dspace.library.uu.nl/handle/1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; 1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; https://dspace.library.uu.nl/handle/1874/263140

Chicago Manual of Style (16^th Edition):

Augustinus, P G E F. “The changing shoreline of Suriname (South America).” 1978. Doctoral Dissertation, University Utrecht. Accessed March 08, 2021. https://dspace.library.uu.nl/handle/1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; 1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; https://dspace.library.uu.nl/handle/1874/263140.

MLA Handbook (7^th Edition):

Augustinus, P G E F. “The changing shoreline of Suriname (South America).” 1978. Web. 08 Mar 2021.

Vancouver:

Augustinus PGEF. The changing shoreline of Suriname (South America). [Internet] [Doctoral dissertation]. University Utrecht; 1978. [cited 2021 Mar 08]. Available from: https://dspace.library.uu.nl/handle/1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; 1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; https://dspace.library.uu.nl/handle/1874/263140.

Council of Science Editors:

Augustinus PGEF. The changing shoreline of Suriname (South America). [Doctoral Dissertation]. University Utrecht; 1978. Available from: https://dspace.library.uu.nl/handle/1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; 1874/263140 ; URN:NBN:NL:UI:10-1874-263140 ; https://dspace.library.uu.nl/handle/1874/263140

Mississippi State University

5. Marty, Joseph R. Estimates of waste rice, natural seeds, and wetland birds in Gulf Coast Prairie ricelands.

Degree: PhD, Wildlife, Fisheries & Aquaculture, 2017, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03202017-163810/ ;

► Hundreds of wetland bird species use ricelands annually in the Gulf Coast Prairie region of Louisiana and Texas. Much of the original ecosystem was… (more)

▼ Hundreds of wetland bird species use ricelands annually in the Gulf Coast Prairie region of Louisiana and Texas. Much of the original ecosystem was transformed for rice and other crops, cattle ranching, flood control, and other human uses. Flooded production and idled ricelands provide critical foraging habitat for breeding, migrating, and wintering wetland birds. Ricelands in coastal Louisiana and Texas provide approximately 42% of the estimated habitat carrying capacity for wintering waterfowl in this region. In 2010, the Deepwater Horizon oil spill in the Gulf of Mexico prompted enactment of the Migratory Bird Habitat Initiative (MBHI) by USDA Natural Resources Conservation Service. The MBHI provided avian habitat, including flooded ricelands, inland from oil impacted areas. My objectives were to: 1) estimate and model variation in biomass of waste rice and natural seeds as potential waterfowl forage in Gulf Coast Prairie ricelands, 2) estimate and model variation in wetland bird use of ricelands, and 3) conduct sensitivity analyses of bioenergetics models by varying foraging thresholds and true metabolizable energy (TME) values. A growing season of ~270 days allows Gulf Coast rice producers to grow two rice crops (i.e., the second termed ratoon). Waste rice was greatest in production fields with harvested and standing ratoon crops, and natural seed biomass was greatest in idled fields with standing vegetation. Wetland bird species richness and waterbird abundance were greatest in shallowly flooded (115 cm) ricelands with sparse vertical vegetation (120 cm), and duck abundance was greatest in shallowintermediately (130 cm) flooded ricelands with short vegetation (115 cm). Shallowly flooded rice fields containing harvested or standing ratoon crops, and shallowly flooded idled fields with standing vegetation provided abundant potential foods for waterfowl and waterbirds. Bioenergetics models indicated that planners in the Gulf Coast Prairie region may be underestimating riceland habitat requirements for waterfowl by 10,000 ha. Models were most sensitive to changes in seed biomass estimates, and less sensitive to changes in foraging thresholds and TME values. Collectively, these results will facilitate conservation partners to refine models for conserving habitats for waterfowl and other waterbirds in the Gulf Coast Prairie. Advisors/Committee Members: J. Brian Davis (chair), Richard M. Kaminski (committee member), Michael G. Brasher (committee member), Scott A. Rush (committee member).

Subjects/Keywords: waterfowl; Texas Mid-Coast; rice; natural seeds; Migratory Bird Habitat Initiative; Chenier Plain; Gulf Coast Prairies; bioenergetics; wetland birds

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APA (6^th Edition):

Marty, J. R. (2017). Estimates of waste rice, natural seeds, and wetland birds in Gulf Coast Prairie ricelands. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03202017-163810/ ;

Chicago Manual of Style (16^th Edition):

Marty, Joseph R. “Estimates of waste rice, natural seeds, and wetland birds in Gulf Coast Prairie ricelands.” 2017. Doctoral Dissertation, Mississippi State University. Accessed March 08, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03202017-163810/ ;.

MLA Handbook (7^th Edition):

Marty, Joseph R. “Estimates of waste rice, natural seeds, and wetland birds in Gulf Coast Prairie ricelands.” 2017. Web. 08 Mar 2021.

Vancouver:

Marty JR. Estimates of waste rice, natural seeds, and wetland birds in Gulf Coast Prairie ricelands. [Internet] [Doctoral dissertation]. Mississippi State University; 2017. [cited 2021 Mar 08]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03202017-163810/ ;.

Council of Science Editors:

Marty JR. Estimates of waste rice, natural seeds, and wetland birds in Gulf Coast Prairie ricelands. [Doctoral Dissertation]. Mississippi State University; 2017. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03202017-163810/ ;

Louisiana State University

6. Kelsall, Megan L. Sources and Chemical Stability of Soil Organic Carbon along a Salinity Gradient and a Chronosequence of Created Brackish Marshes in Coastal Louisiana.

Degree: MS, Climate, Louisiana State University

URL: https://digitalcommons.lsu.edu/gradschool_theses/4984

► Tidal marshes have been recognized for providing a number of important ecological services including soil carbon sequestration. However, the loss of tidal marsh habitat… (more)

▼ Tidal marshes have been recognized for providing a number of important ecological services including soil carbon sequestration. However, the loss of tidal marsh habitat due to climate change and anthropogenic stressors exposes previously stored soil organic carbon (SOC) to oxidation. The vulnerability of SOC to oxidation depends on its chemical stability and environmental conditions limiting decomposition. Labile organic carbon (LC), decomposes quickly unless abiotic conditions limit decomposition. Recalcitrant organic carbon (RC) decomposes slower and is stored for longer time periods. Predicting long-term storage of SOC is complicated by the potential for multiple SOC sources, differences in chemical stability, and variation in environmental conditions that may preserve chemically LC. To increase understanding of soil carbon dynamics in tidal marshes, SOC sources and chemical stabilities were assessed along an estuarine salinity gradient, and along a time series of marsh creation. Additionally, relationships between labile and recalcitrant carbon, vegetation characteristics, and environmental factors (i.e. elevation, mineral sediment) were examined. Soil cores were collected in tidal freshwater (n = 4), brackish (n = 3), and salt (n = 4) marshes in Barataria Bay, Louisiana, and in six created dredge sediment marshes across a 32-year chronosequence, and a natural reference marsh (n = 6) in Sabine National Wildlife Refuge in southwestern Louisiana. To examine the source (algal, C4, or C3 plant) of total organic and refractory SOC, δ¹³C analyses were used. Acid hydrolysis digestion was used to fractionate the SOC into ‘labile’ and ‘refractory’ components. Across all marshes an average of 73% of SOC was recalcitrant indicating it is chemically stable. Across the salinity gradient, LC, RC and SOC densities were highest in the freshwater marshes. LC and RC stocks increased with marsh age in the created marshes, but the RC stock increased two times faster. LC and RC accumulation rates were not significantly different between created marshes of different ages and the natural reference marsh. Overall this study illustrates that a majority of SOC in coastal marshes of Louisiana is derived from local vegetation and is chemically stable therefore more likely to contribute to long term carbon storage.

Subjects/Keywords: Labile carbon; Recalcitrant carbon; Barataria Bay; Chenier Plain; C13 isotope; acid hydrolysis

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APA (6^th Edition):

Kelsall, M. L. (n.d.). Sources and Chemical Stability of Soil Organic Carbon along a Salinity Gradient and a Chronosequence of Created Brackish Marshes in Coastal Louisiana. (Masters Thesis). Louisiana State University. Retrieved from https://digitalcommons.lsu.edu/gradschool_theses/4984

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Chicago Manual of Style (16^th Edition):

Kelsall, Megan L. “Sources and Chemical Stability of Soil Organic Carbon along a Salinity Gradient and a Chronosequence of Created Brackish Marshes in Coastal Louisiana.” Masters Thesis, Louisiana State University. Accessed March 08, 2021. https://digitalcommons.lsu.edu/gradschool_theses/4984.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

MLA Handbook (7^th Edition):

Kelsall, Megan L. “Sources and Chemical Stability of Soil Organic Carbon along a Salinity Gradient and a Chronosequence of Created Brackish Marshes in Coastal Louisiana.” Web. 08 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Kelsall ML. Sources and Chemical Stability of Soil Organic Carbon along a Salinity Gradient and a Chronosequence of Created Brackish Marshes in Coastal Louisiana. [Internet] [Masters thesis]. Louisiana State University; [cited 2021 Mar 08]. Available from: https://digitalcommons.lsu.edu/gradschool_theses/4984.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Council of Science Editors:

Kelsall ML. Sources and Chemical Stability of Soil Organic Carbon along a Salinity Gradient and a Chronosequence of Created Brackish Marshes in Coastal Louisiana. [Masters Thesis]. Louisiana State University; Available from: https://digitalcommons.lsu.edu/gradschool_theses/4984

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Louisiana State University

7. O'Connell, Jessica L. Coastal marsh restoration using terraces: effects on waterbird habitat in Louisiana's Chenier Plain.

Degree: MS, Environmental Sciences, 2006, Louisiana State University

URL: etd-11162006-111100 ; https://digitalcommons.lsu.edu/gradschool_theses/2277

► Terracing is a novel technique used to combat coastal marsh loss in Louisiana and Texas. Terraces are assumed to slow marsh erosion, decrease pond depth,… (more)

▼ Terracing is a novel technique used to combat coastal marsh loss in Louisiana and Texas. Terraces are assumed to slow marsh erosion, decrease pond depth, and encourage vegetation expansion. Terraced ponds have never been evaluated as habitat for waterbirds, which heavily depend on Louisianaï¿½s coastal marshes. From April 2005 to April 2006, I monitored waterbird species richness and density through time to estimate effects that terracing has on habitat quality. Water quality (turbidity, salinity, conductivity, water temperature, and water depth) also was measured. Submerged aquatic vegetation (SAV) biomass and nekton density were measured from April 2005 to September 2005. I monitored paired terraced and unterraced ponds in three sites within Louisianaï¿½s Chenier Plain. Observations and samples were taken in two microhabitat types within ponds: marsh edge and open water. Terracing ponds increased the proportion of marsh edge, but did not alter water quality variables measured. SAV and nekton were denser at the marsh edge than in open water, but did not differ significantly when compared at the whole-pond level between pond types. Waterbirds also were denser at the marsh edge. Waterbird density was consistently greater in terraced ponds. Waterbird species richness was greater in terraced ponds in winter and during spring and summer was generally greater in terraced ponds. Additionally, bird density in ponds varied by foraging guild. During spring and summer, aerialists, shorebirds, and dabbling foragers were consistently denser in terraced ponds. Wading forager densities varied in ponds with time, but were generally denser in terraced ponds. Diving foragers were not dense and did not differ between pond types. During winter, only dabbling and wading foragers were significantly denser in terraced ponds, but these two guilds represented 83% of birds observed. Other foraging group densities did not differ between pond types. Several species of conservation concern were observed. Trends in density for most species of concern were similar to those seen for the foraging guild in which that species was classified. Marsh edge is a biologically prolific habitat. The amount of edge necessary to achieve pond level effects for nekton and SAV has not been evaluated.

Subjects/Keywords: terraces; wetland ecology; wetland bird habitat preference; wetland restoration; nekton; waterbird communities; submerged aquatic vegetation; chenier plain; louisiana; edge effects

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APA (6^th Edition):

O'Connell, J. L. (2006). Coastal marsh restoration using terraces: effects on waterbird habitat in Louisiana's Chenier Plain. (Masters Thesis). Louisiana State University. Retrieved from etd-11162006-111100 ; https://digitalcommons.lsu.edu/gradschool_theses/2277

Chicago Manual of Style (16^th Edition):

O'Connell, Jessica L. “Coastal marsh restoration using terraces: effects on waterbird habitat in Louisiana's Chenier Plain.” 2006. Masters Thesis, Louisiana State University. Accessed March 08, 2021. etd-11162006-111100 ; https://digitalcommons.lsu.edu/gradschool_theses/2277.

MLA Handbook (7^th Edition):

O'Connell, Jessica L. “Coastal marsh restoration using terraces: effects on waterbird habitat in Louisiana's Chenier Plain.” 2006. Web. 08 Mar 2021.

Vancouver:

O'Connell JL. Coastal marsh restoration using terraces: effects on waterbird habitat in Louisiana's Chenier Plain. [Internet] [Masters thesis]. Louisiana State University; 2006. [cited 2021 Mar 08]. Available from: etd-11162006-111100 ; https://digitalcommons.lsu.edu/gradschool_theses/2277.

Council of Science Editors:

O'Connell JL. Coastal marsh restoration using terraces: effects on waterbird habitat in Louisiana's Chenier Plain. [Masters Thesis]. Louisiana State University; 2006. Available from: etd-11162006-111100 ; https://digitalcommons.lsu.edu/gradschool_theses/2277

Louisiana State University

8. Rotondo, Kristina Anne. Transport and deposition of fluid mud event layers along the western Louisiana inner shelf.

Degree: MS, Oceanography and Atmospheric Sciences and Meteorology, 2004, Louisiana State University

URL: etd-06222004-145908 ; https://digitalcommons.lsu.edu/gradschool_theses/1695

► The western Louisiana inner shelf along the Chenier Plain coast has experienced fluid mud deposition in response to increased fine sediment supplied by the… (more)

▼ The western Louisiana inner shelf along the Chenier Plain coast has experienced fluid mud deposition in response to increased fine sediment supplied by the Atchafalaya River since ~1950’s. The goal of this project is to assess the characteristics comprising the sedimentary strata and stratigraphic architecture that result from mud deposition on the inner shelf. Recent time-series cores collected from the inner shelf along the Chenier plain coast show the region is subject to transient fluid mud deposition, leading to high long-term accumulation rates. Sediment cores were collected in May 2001, March and May 2002 from the inner shelf landward of the 10 m isobath, 100 km west of Atchafalaya Bay. Porosity, granulometry, X-radiography, and 7Be, 210Pb and 137Cs geochronology indicate the presence of high-porosity event layers 2-25 cm thick composed of clay with basal silt laminations. These event layers appear to concentrate around a depocenter located 95-110 km west of the Atchafalaya River, landward of the 7 m isobath, but can be ephemeral features on a seasonal time scale. The combination of high-energy benthic hydrodynamics and sufficient fine sediment can result in cross-shelf gravity-driven flows (on very low slopes) that can blanket hundreds of square kilometers to thicknesses exceeding 10 cm. The sedimentary fabric that results from gravity-driven flows consists of a stacked pattern of predominantly fine-grained, fining upward packages. The resulting morphology of the shelf may be a clinoform, with maximum deposition occurring on the foreset (convex upward) region. The observations from the western Louisiana inner shelf (mud/silt couplets that comprise the fine-scale stratigraphy of the region, ephemeral 7Be deposits, and clinoform morphology exhibiting erosional features in sidescan and chirp data) are consistent with the wave-enhanced gravity-driven flow model. These results indicate that wave-enhanced gravity driven flows may be an important component in the dispersal of Atchafalaya River sediment.

Subjects/Keywords: gravity-driven flow; clinoform; Atchafalaya River; fluid mud; beryllium-7; Chenier Plain; event sedimentation

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APA (6^th Edition):

Rotondo, K. A. (2004). Transport and deposition of fluid mud event layers along the western Louisiana inner shelf. (Masters Thesis). Louisiana State University. Retrieved from etd-06222004-145908 ; https://digitalcommons.lsu.edu/gradschool_theses/1695

Chicago Manual of Style (16^th Edition):

Rotondo, Kristina Anne. “Transport and deposition of fluid mud event layers along the western Louisiana inner shelf.” 2004. Masters Thesis, Louisiana State University. Accessed March 08, 2021. etd-06222004-145908 ; https://digitalcommons.lsu.edu/gradschool_theses/1695.

MLA Handbook (7^th Edition):

Rotondo, Kristina Anne. “Transport and deposition of fluid mud event layers along the western Louisiana inner shelf.” 2004. Web. 08 Mar 2021.

Vancouver:

Rotondo KA. Transport and deposition of fluid mud event layers along the western Louisiana inner shelf. [Internet] [Masters thesis]. Louisiana State University; 2004. [cited 2021 Mar 08]. Available from: etd-06222004-145908 ; https://digitalcommons.lsu.edu/gradschool_theses/1695.

Council of Science Editors:

Rotondo KA. Transport and deposition of fluid mud event layers along the western Louisiana inner shelf. [Masters Thesis]. Louisiana State University; 2004. Available from: etd-06222004-145908 ; https://digitalcommons.lsu.edu/gradschool_theses/1695

Louisiana State University

9. Gray, Jacob M. Habitat use, movements and spring migration chronology and corridors of female gadwalls that winter along the Louisiana Gulf Coast.

Degree: MS, Environmental Sciences, 2009, Louisiana State University

URL: etd-04272010-212919 ; https://digitalcommons.lsu.edu/gradschool_theses/427

► The Louisiana Gulf Coast is an important wintering area for North American gadwall (Anas strepera). Conservation of winter habitat is a top priority of the… (more)

▼ The Louisiana Gulf Coast is an important wintering area for North American gadwall (Anas strepera). Conservation of winter habitat is a top priority of the Gulf Coast Joint Venture. Quantitative estimates of habitat use by wintering gadwall would help improve energetic demand models and subsequent estimates of habitat requirements. I used satellite telemetry (PTTs) to estimate winter habitat and refuge uses, spring migration chronology and corridors, as well as inter- and intra-regional winter movements of females. I used a split-plot MANOVA to evaluate the effects of individual females, female age, winter, hunt periods within winter, time of day, and all possible interactions among these explanatory variables on habitat use. I used a mixed model ANOVA to evaluate the effects of individual females, female age, winter, hunt periods within winter, time of day, and all possible interactions of these explanatory variables on refuge use. I used mixed models to evaluate the effects of hunt periods within winter, refuge use, winter, individual female, female age, and body condition at time of capture on intra-regional movements. Finally, I used a MANOVA to evaluate the effects of female age, spring of tracking, and body condition at time of capture on several spring migration parameters. I found that habitat use in winter 2007-08 was dominated by intermediate marsh, whereas habitat use during winter 2008-09 showed an increased dependence on freshwater marsh (P = 0.0001). Use of non-hunted refuges by adult females was greater when hunting season was open than when closed (P = 0.0061). I found no significant relationships among the explanatory variables and intra-regional movements (all Ps > 0.09). Peak migratory departure from the Louisiana Gulf Coast Chenier Plain occurred during late-March to early-April. HY females traveled a greater total migratory distance, spent more days migrating, used more stopovers, and arrived at inferred breeding locations later than did AHY females (all Ps ≤ 0.061). My results suggest that intermediate marsh is important for wintering gadwall; however, freshwater marsh may become important after tidal surge events. Finally, my migration data provides habitat managers with quantitative information to consider when implementing conservation programs and management practices.

Subjects/Keywords: Louisiana; coastal marsh; Gulf Coast Chenier Plain; wintering waterfowl; habitat use; migration; satellite telemetry; gadwall

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gray, J. M. (2009). Habitat use, movements and spring migration chronology and corridors of female gadwalls that winter along the Louisiana Gulf Coast. (Masters Thesis). Louisiana State University. Retrieved from etd-04272010-212919 ; https://digitalcommons.lsu.edu/gradschool_theses/427

Chicago Manual of Style (16^th Edition):

Gray, Jacob M. “Habitat use, movements and spring migration chronology and corridors of female gadwalls that winter along the Louisiana Gulf Coast.” 2009. Masters Thesis, Louisiana State University. Accessed March 08, 2021. etd-04272010-212919 ; https://digitalcommons.lsu.edu/gradschool_theses/427.

MLA Handbook (7^th Edition):

Gray, Jacob M. “Habitat use, movements and spring migration chronology and corridors of female gadwalls that winter along the Louisiana Gulf Coast.” 2009. Web. 08 Mar 2021.

Vancouver:

Gray JM. Habitat use, movements and spring migration chronology and corridors of female gadwalls that winter along the Louisiana Gulf Coast. [Internet] [Masters thesis]. Louisiana State University; 2009. [cited 2021 Mar 08]. Available from: etd-04272010-212919 ; https://digitalcommons.lsu.edu/gradschool_theses/427.

Council of Science Editors:

Gray JM. Habitat use, movements and spring migration chronology and corridors of female gadwalls that winter along the Louisiana Gulf Coast. [Masters Thesis]. Louisiana State University; 2009. Available from: etd-04272010-212919 ; https://digitalcommons.lsu.edu/gradschool_theses/427

10. Marty, Joseph R. Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas.

Degree: MS, Wildlife, Fisheries & Aquaculture, 2013, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09162013-163707/ ;

► Rice not collected by harvesters and natural seeds are important foods for waterfowl. Estimation of abundance of these seeds is necessary for calculating waterfowl… (more)

Subjects/Keywords: shorebirds; waterbirds; Migratory Bird Habitat Initiative; waterfowl; moist-soil; rice; Texas Mid-Coast; Louisiana Chenier Plain; wading birds

…6 Chenier Plain, Louisiana and Texas… …14 Louisiana Chenier Plain Seed Abundance… …50 Chenier Plain, Louisiana and Texas… …seed in the Louisiana Chenier Plain… …in the Louisiana Chenier Plain....................................30 1.4 Ecological bias…

10 more images…

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APA (6^th Edition):

Marty, J. R. (2013). Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-09162013-163707/ ;

Chicago Manual of Style (16^th Edition):

Marty, Joseph R. “Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas.” 2013. Masters Thesis, Mississippi State University. Accessed March 08, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-09162013-163707/ ;.

MLA Handbook (7^th Edition):

Marty, Joseph R. “Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas.” 2013. Web. 08 Mar 2021.

Vancouver:

Marty JR. Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas. [Internet] [Masters thesis]. Mississippi State University; 2013. [cited 2021 Mar 08]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09162013-163707/ ;.

Council of Science Editors:

Marty JR. Seed and waterbird abundances in ricelands in the Gulf Coast Prairies of Louisiana and Texas. [Masters Thesis]. Mississippi State University; 2013. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09162013-163707/ ;

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