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Showing 1 to 20 of 27 for “"Lake Pontchartrain"”.
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Artificial Reef Performance in Lake Pontchartrain, Louisiana
… were constructed in a large oligohaline estuary, Lake Pontchartrain, Louisiana to improve recreational fisheries. The reefs are the first in Louisiana to be built of reef balls, concrete domes deployed primarily in marine environments. Although they attract fish and invertebrates in high …
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Water Quality Study of Southshore of Lake Pontchartrain
… initiated along the southern shoreline area of Lake Pontchartrain in Jefferson Parish, specifically, around Bonnabel Canal (Pumping Station No.1) to identify the effect of urban stormwater discharges on Lake Pontchartrain and to simulate the plume patterns from the Bonnabel Canal. Sixteen …
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Wave and Longshore Transport Studies on Lake Pontchartrain
A wind-wave model for Lake Pontchartrain has been developed. This model uses the probability data obtained from the frequency analysis of wind information from the four weather monitoring stations in Lake Pontchartrain. For any given season and any given location, this model generates statistical …
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Sediment Transport and Pathogen Indicator Modeling in Lake Pontchartrain
… to determine the fate of pathogen indicators in Lake Pontchartrain discharged from its tributaries. To accomplish this, Estuarine, coastal and ocean model with sediment (ECOMSED) was implemented to simulate various processes that would determine the fate and transport of fecal coliform bacteria …
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The Biology of Spaeroma Terebrans in Lake Pontchartrain, Louisiana with Emphasis on Burrowing
… in bald cypress (Taxodium distichum) in Lake Pontchartrain near the Bonnet Carre Spillway, Louisiana. In addition laboratory experiments for water column distribution and substrate preferences were conducted using cypress, Styrofoam, and balsa. Results indicate that this population may be …
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Statistical Analysis of Seasonal Precipitation for the Lake Pontchartrain Basin and Associated Watersheds
To investigate seasonal patterns of precipitation, statistical analysis was performed on a dataset of daily rainfall observed at 63 south Louisiana stations from 1836 to 2002. Each station record was examined for data quality and continuity with special attention to time periods surrounding station …
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Abundance and Distribution of Early Life Stage Blue Crabs (Callinectes sapidus) in Lake Pontchartrain
… a 12-month study of near-shore habitats in Lake Pontchartrain to assess spatiotemporal variation in the abundance of early life stage blue crabs (Callinectes sapidus). Collections were made using a 1 m2 throw trap and data showed that C. sapidus numbers varied over time and among sites. Two …
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Water Quality Study and Plume Behavior Modeling for Lake Pontchartrain at the Mouth of the Tchefuncte River
Over the last several decades, the Lake Pontchartrain Basin has been impacted by the presence of high levels of Fecal Coliform bacteria following periods of rainfall. This is a potential problem for recreational uses of the area. In 2003 a field sampling study was initiated in the north shore area …
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Using Two-Dimensional Numerical Models to Analyze Hydraulic Effects of Constricted Flows through the Rigolets Pass between Lake Pontchartrain and Lake Borgne
… control structures in the Rigolets Pass between Lake Borgne and Lake Pontchartrain. For this purpose a small scale physical model was built. It showed that bi-stable flow can develop downstream of a constriction. Small changes in the distribution of the approaching flow significantly impacted …
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Exchange flows in an urban water body: Bayou St. John responses to the removal of flood control structures, future water elevation control, and water quality
… John, an urban water body extending south from Lake Pontchartrain, has two anthropogenic structures that regulate flow from the Lake . The City of New Orleans has plans to remove the inner control structure to improve water quality. Field and numerical methods used in this study show removing …
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Bycatch of the Lake Pontchartrain Basin inshore shrimp fishery and its effect on two sea catfish species: the gafftopsail catfish (Bagre marinus) and the hardhead catfish (Ariopsis felis)
<p>In Lake Pontchartrain Basin, commercial fishing in estuarine habitats impacts many non-target species collected as bycatch. I investigated the bycatch assemblages collected by commercial vessels and compared these to assemblages collected by typical fishery-independent methods. I compared …
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Sensitivity of the Estuarine-shelf Exchange in Mississippi Coastal Waters to River Diversions and Linkage Pathway Bathymetry: A Modeling Study
… BCS diversion and channel implementation between Lake Pontchartrain and Lake Borgne in 2019. In conclusion, the msbCOAWST simulates the water level better in the MS Sound compared to the interior of Lake Pontchartrain. The deepening and widening of the Rigolets channel and Chef Menteur Pass are …
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Quantifying Discard Mortality of Undersized and Ovigerous Crabs in the Gulf of Mexico Blue Crab Fishery
… crabs using bycatch surveys across the Lake Pontchartrain–Mississippi Sound coastal system. Ovigerous crabs were most common at high salinities and temperatures, whereas undersized crab presence was inversely correlated with soak time, temperature, and the number of crabs per trap, and …
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Cyanobacteria harmful algal blooms in South Louisiana estuaries : a synthesis of field research, management implications, and outreach
… bloom dynamics, specifically CyanoHABs, in Lake Pontchartrain, Louisiana (LA) during a diversion opening year and a non-opening year. While variations in freshwater flow were found to be important to determine which phytoplankton group dominates the system, species diversity within a group …
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Soft Reds and Hard Tans: Developing an Index of Vulnerability for New Orleans Brick
… whereas hard tan bricks were made using mud from Lake Pontchartrain. Using multiple physical characterization techniques and performance tests, this study compares the behavior of two groups of seven nineteenth-century soft red and hard tan bricks to show that age alone is not a reliable indicator …
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Red drum (Sciaenops ocellatus) Habitat Use in an Urban System; Behavior of Reintroduced Fish in Bayou St. John, New Orleans
… in the northern section of the Bayou (nearest Lake Pontchartrain). To assess habitat use and behavior on a finer scale, a second group of 19 red drum were internally tagged with VEMCO transmitters and movements monitored by four remote receivers. These fish exhibited behavior similar to red …
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Enhanced Blue Crab Predation on Rangia Clams after Exposure to Hypoxia
… < 2 mg/L is a problem in estuaries worldwide. In Lake Pontchartrain, a 250 km2 de-faunated zone exists as a result of salinity stratification and episodic hypoxia. Mature common rangia clams (Rangia cuneata) are not found within this zone. Blue crabs (Callinectes sapidus) are important estuarine …
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Phase Speciation of Carbohydrates and Dioxins in Rivers and Coastal Waters in the Northern Gulf of Mexico
… variations in the Mississippi Sound/Bight and Lake Pontchartrain. Laboratory mixing experiments were also carried out to examine the behaviour of CHO species along a salinity gradient. The phase partitioning of dioxin among three different phases, i.e., colloidal organic matter, particulate …
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Sedimentary Characteristics of an Estuarine Marsh System and the Roles of Storm Overwash, Micro-tidal Currents, and Organic Production: Big Branch Marsh, Louisiana
… Refuge, located on the northern shore of Lake Pontchartrain in St. Tammany Parish, Louisiana, to discern the relative influences of fluvial, tidal, and storm overwash transport dynamics of a micro-tidal estuarine marsh system. Collected sediment samples from tidal channel beds, pond …
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Exploring Fisheries Species Distribution Shifts in Response to Freshwater Inflow Through the Bonnet Carré Spillway Using Species Distribution Models
… from MR flooding by diverting floodwaters into Lake Pontchartrain when the MR exceeds 5.18m flood stage. Diverted waters flow east into the Mississippi Sound (MSS), introducing turbid, nutrient rich freshwater to the estuary before draining into the Gulf of Mexico. BCS openings have become much …
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