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Full-Text Articles in Physical Sciences and Mathematics
Sediment Oxygen Demand And Stoichiometry Of Irl Nutrient Fluxes, Iulia Bibire
Sediment Oxygen Demand And Stoichiometry Of Irl Nutrient Fluxes, Iulia Bibire
Theses and Dissertations
Eutrophication of coastal systems has become a prominent global issue with a variety of detrimental effects, one of these being the shift in the composition of phytoplankton communities often promoting harmful algal blooms (HABs) resulting at least partially from changes to the relative abundance of N:P:Si. This study investigated nutrient fluxes from muck, a fine-grained and organic-rich sediment, and from sand to determine the importance of these sediments with regards to regulating N:P ratios in the water column. Overall sediment oxygen demand (SOD) was used as an indicator of aerobic decomposition and was found to decrease from north to south …
Using Disruptive Coloration And Ultraviolet Light To Prevent Barnacle Settlement, Kailey Nicole Richard
Using Disruptive Coloration And Ultraviolet Light To Prevent Barnacle Settlement, Kailey Nicole Richard
Theses and Dissertations
Biofouling or the accumulation of unwanted micro and macro organisms is problematic for the shipping industry. Barnacles are one of the most abundant fouling organisms and their settlement on ship hulls can result in costly damage. Several methods have been developed to prevent the formation of biofouling, including antifouling coatings and mechanical techniques, but the search for more effective and environmentally friendly solutions is still ongoing. This thesis investigated two methods aimed at barnacle prevention: color patterning and the application of ultraviolet light. The first method utilized disruptive coloration, a common mechanism observed in nature by terrestrial organisms (i.e. butterflies) …
Organic Sediment Impacts On Seagrasses And Their Associations With Benthic Fauna, Sean Matthew Crowley
Organic Sediment Impacts On Seagrasses And Their Associations With Benthic Fauna, Sean Matthew Crowley
Theses and Dissertations
Human-population growth and rapid rates of urbanization have led to eutrophic conditions in estuaries throughout the world. Effects often include severe algal blooms, decreased dissolved oxygen levels, and the accumulation of fine-grained organic-rich sediments. One frequent negative consequence of eutrophication is the decline of seagrasses, a vital component of coastal ecosystems. Seagrasses provide shelter from predation, serve as nursery habitat, stabilize sediments, act as a sink for excess carbon, produce oxygen, and are a food source for many herbivores. Seagrasses are also sensitive to environmental changes, such as declining water quality and increased sedimentation rates. This study examines the impacts …