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Showing 1 to 20 of 37 for “"Estuarine system"”.
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Medium-Term (Months to Years) Morphodynamic Modelling of a Complex Estuarine System
… A 2D morphodynamic model based on the Telemac system was calibrated and validated using extensive field measurements' at Teignmouth (UK). Statistical tools indicate that the model is capable of predicting the observed hydrodynamics with 'good' accuracy, given that measurement noise is removed. …
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A real time model of nitrogen-cycle dynamics in an estuarine system.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Civil Engineering, 1975
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Observations and modelling of the variability of the Solent-Southampton Water estuarine system
Understanding the effect of physical forcing on estuarine functioning is of major importance to determine the rate of exchange of water, sediments, pollutants and nutrients between the continent and the ocean. The combination of numerical models and discrete datasets is used to describe and …
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Tracking environmental trends in the Great Bay Estuarine System: An examination of water quality and nuisance macroalgal blooms
… of detecting long term water quality changes in estuarine systems. To investigate the environmental status of New Hampshire's Great Bay National Estuarine Research Reserve, this study assessed the abundance/distribution of macrophytes, particularly Gracilaria and Ulva species, relative to …
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Effect of salinity and environmental changes on the fish community of the St Lucia Estuarine System with focus on the salinity tolerance of Oreochromis mossambicus (Mozambique Tilapia)
St Lucia, the largest estuarine lake system in Africa, has been closed since 2002, except for a brief opening in 2007 caused by Cyclone Gamede. Mouth opening in 2007 was preceded by five years of low lake levels and hypersaline conditions which greatly reduced marine fish species diversity. …
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The diet of selected benthic feeding fish in the Mfolozi-Msunduzi system, KwaZulu-Natal
The St Lucia estuarine system is considered to be the largest nursery area for estuarine-associated marine fish in southern Africa. The prolonged mouth closure due to regional droughts has resulted in large declines in its fish and prawn communities with deleterious consequences for regional marine …
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Detection of Giardia lamblia and Cryptosporidium parvum in the eastern oyster (Crassostrea virginica) harvested from the Great Bay Estuary
<p>The Great Bay Estuarine system is being impacted by point source and nonpoint source pollution that affect shellfish quality. Many outbreaks of human gastroenteritis are potentially caused by the consumption of raw or undercooked oysters in which the protozoan pathogens, Giardia lamblia and …
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An ADCP study of subtidal scale density-driven exchange in Saldanha Bay, South Africa
… opposing bi-level flow, similar to an estuarine system, develops in response to remote upwelling-favourable winds. The bi-level flow component occurs in two distinct bands, bayward at 0-9m height from bottom and seaward 15-20m height off bottom, and is very sensitive to changes in wind …
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Hypsometric and geometric controls on hydrodynamics, tidal asymmetry, and sediment connectivity in shallow estuarine systems
… and tidal basins are highly dynamic coastal systems that serve as a transition zone between the river and the ocean. The morphological evolution of these diverse environments is modulated by non-linear feedbacks between tides, meteorological forcing, and sediment transport processes. This …
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Is The Exotic Brazilian Pepper, Schinus Terebinthifolius, A Threat To Mangrove Ecosystems In Florida?
Mangrove ecosystems are critical to Florida, providing economic resources to humans, and untold ecological resources to estuarine organisms. In Florida's estuaries, mangrove ecosystems have suffered significant losses due to natural and human disturbances; these disturbances potentially leave …
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Spatial Ecology and Movement Patterns of Black Drum (Pogonias cromis) and Sheepshead (Archosargus probatocephalus) in Mississippi Sound
… are ecologically and economically important estuarine fishes throughout the northern Gulf of Mexico. Despite their value, little is known about their spatial ecology, including patterns of residency, movement, and connectivity within northern Gulf estuarine systems. This study is the first to …
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UNDERSTANDING THE PHYSICAL OCEANOGRAPHY OF THE MISSISSIPPI SOUND: OBSERVATIONAL CLIMATOLOGIES, TRENDS AND RELATIONSHIPS IN THE SOUND AND COMPARISON OF THE SURFACE CURRENTS OF OCEAN MODELS WITH HIGH FREQUENCY RADAR DATA
… Mississippi Sound is a shallow lagoon-type water estuarine system that is a major part of Northern Gulf of Mexico (NGOM) separated from the shelf waters by a series of barrier islands. It is mostly characterized by its strong weather fronts, storms and hurricanes that affect the …
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Development and application of a three-dimensional water quality model in a partially-mixed estuary, Southampton Water, UK
… model for the Solent and Southampton Water estuarine system, as a part of an effort to examine the effects of human activity and natural processes on estuarine water quality. Dissolved oxygen (DO), as a main indicator of water quality, is influenced by physical, chemical and biological …
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Nearshore Sedimentology of Eroding Microtidal Estuaries: Bon Secour Bay, Alabama and Perdido Bay, Florida
<p>Estuarine shorelines along the northern Gulf of Mexico are dynamic geologic settings that provide numerous ecological and economic benefits. By definition, estuaries are semi-enclosed bodies of water that receive sediment from two sources: (1) fluvial systems feeding into the estuary and (2) …
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Tidal distortion in shallow estuaries
… distorted as it propagates into shallow inlet/estuarine systems. Time asymmetries develop in the rise and fall of sea surface with consequent time and magnitude asymmetries in tidal currents. Flood-dominant estuaries are characterized by longer falling tides and stronger flood currents while …
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SEDIMENTOLOGY, ICHNOLOGY, AND SEQUENCE STRATIGRAPHY OF THE MIOCENE OFICINA FORMATION, ORINOCO OIL BELT, EASTERN VENEZUELA BASIN
… and laterally, comprising high-sinuosity estuarine-channel, tidal-flat, tidal-creek and tidal-sandbar deposits, stacked to form a retrogradational package and representing the transgressive systems tract. The Middle Member is characterized by widespread evidence of tidal influence (e,g, …
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METAL BIOGEOCHEMISTRY OF A MINE CONTAMINATED EsTUARiNE-CoASTAL SYSTEM IN SW SPAIN
… and transport of metals in a river/estuarine system contaminated by acid mine drainage. The Rio Tinto and Rio Odiel drain a metalliferous mining area in the Iberian Pyrite Belt in the south-west of Spain. The pH values in the rivers were low (< 3) and dissolved metal concentrations …
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Defining the ecological and physiological traits of phytoplankton across marine ecosystems
… of two closely related diatom species in an estuarine system was examined. This study demonstrated that co-occurring diatoms in a dynamic coastal system have apparent differences in their capacity to use nitrogen and phosphorus, and that these differences may facilitate the diversity of the …
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Tannin geochemistry of natural systems: method development and application
… to terrigenous organic matter cycling in aquatic systems. However, virtually nothing is known at the molecular level about tannin diagenesis despite the increased sensitivity and unambiguity of molecular characterizations vs. bulk techniques. Due to the analytical challenges in measuring tannin …
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