Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 404 for “"reef"”.
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Foraminiferal Ecology in a Back-Reef Environment, Molasses Reef, Florida
Made available in DSpace on 2014-12-09T20:34:14Z (GMT). No. of bitstreams: 1 6503700.pdf: 3885140 bytes, checksum: 8f064ef19024a5ce5a8a23e13a89b37b (MD5) Previous issue date: 1964
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Fluorescence in reef corals
… corals identified five fluorescing pigments in reef corals. In this thesis I study coral fluorescence spectra. I wanted to learn if fluorescence could be useful for large scale mapping and monitoring of the reef as a part of an effort to stop the recently reported global decline in coral reefs …
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Post-depositional alteration of the Ventersdorp Contact Reef at Vaal Reef no. 10 shaft, Klerksdorp Goldfield
The Ventersdorp Contact Reef (VCR) is an auriferous conglomerate which unconformably overlies the rocks of the Witwatersrand Supergroup. It acted as a palaeo-aquifer and is capped by relatively impermeable metabasalts of the Ventersdorp Supergroup. Three post-depositional alteration events, which …
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Reef fish demographics on Louisiana artificial reefs : the effects of reef size on biomass distribution and foraging dynamics
… role that habitat plays in the life history of reef-associated fishes is particularly significant given the dramatic increase in the number of artificial reefs deployed in coastal ecosystems over the past 50 years. In the Gulf of Mexico, the oil and gas industry has added a significant amount of …
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Artificial Reef Performance in Lake Pontchartrain, Louisiana
Artificial reef development is a common fishery enhancement tool used in aquatic systems worldwide. In 2003 and 2004, a series of artificial reefs were constructed in a large oligohaline estuary, Lake Pontchartrain, Louisiana to improve recreational fisheries. The reefs are the first in Louisiana …
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Taxonomy and ecology of South African reef corals
… review of South African hermatypic Scleractinian reef corals, a description of coral communities on northern Natal coral reefs, experiments isolating the influence of the most important abiotic factors forcing these communities and finally management suggestions for the marine reserves within …
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The reef at the end of the world
… to be shrugging off a sneak preview of the coral-reef apocalypse. Now Barkley, her boss Cohen, and the rest of the team are trying to answer a few pressing questions. Are the corals really okay? And if so, how? Moreover, what does that mean?
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Coral Reef Flood Protection and Coral Growth Typology
… specifically, how the form and material of coral reefs are able to mitigate the damages of incoming waves as a result of storm surges. The form and materiality of the coral reefs are translated into a modular coastal protection typology that can be applied on any coast. However, the project places …
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Examining coral reef ecosystem dynamics using microorganisms and metabolites
… of biodiverse and economically important coral reef ecosystems and are also tightly connected. Metabolites are small organic compounds produced by reef organisms and are the chemical currencies exchanged by unicellular microorganisms (bacteria and archaea) within the seawater. Although central …
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Comparing Reef Bioindicators on Benthic Environments off Southeast Florida
… is to develop protocols applicable to coral reefs to distinguish between the effects of local water quality and those associated with regional to global environmental change. One test case is the current-dominated southeast coast of Florida where the Delray Outfall delivers 30 million gallons …
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Examining coral reef ecosystem dynamics using microorganisms and metabolites
… of biodiverse and economically important coral reef ecosystems and are also tightly connected. Metabolites are small organic compounds produced by reef organisms and are the chemical currencies exchanged by unicellular microorganisms (bacteria and archaea) within the seawater. Although central …
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Behavioral ecology of coral reef fishes at spawning aggregation sites
Coral reef fishes aggregate to spawn on certain locations of reefs. This thesis is an extensive investigation of the behavioral and ecological relations between spawning reef fishes, predators and their environment at a spawning aggregation site. Many hypotheses have been proposed regarding the …
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Coral reef soundscapes : spatiotemporal variability and links to species assemblages
Coral reefs are biodiverse ecosystems that are at risk of degradation as a result of environmental changes. Reefs are constantly in a state of flux: the resident species assemblages vary considerably in space and time. However, the drivers of this variability are poorly understood. Tracking these …
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Ecological evaluation of coral reef resources at Kahaluʻu Bay, Hawaiʻi
… of this research were to: assess coral reef resources (coral and fish communities) present at Kahalu´u Bay, Hawai´i; and integrate scientific ecological observations with Traditional Environmental Knowledge (TEK) and cultural practices. This localized assessment is the first to date at …
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Biogenic buildups and carbonate sedimentation, Dry Tortugas Reef Complex, Florida
… complex of carbonate banks and coral reefs, is located at the southern terminus of the Florida limestone shelf. The complex rises to the surface waters from a drowned Pleistocene surface that forms a circular platform having a general depth of 17-21 m.</p> <p>Three basic biogenic …
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Influence of reef-associated predators on adjacent soft-sediment communities
… soft-sediment species with distance from reefs have been suggested to be caused by reef-associated predators. A large-scale mensurative experiment was used to investigate the distribution of two size classes of macrofauna with distance from the reef edge across three locations in …
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Spatial and temporal dynamics of an exploited reef-fish population
The successful management of the fishery for galjoen Dichistius capensis depends on an understanding of its spatial and temporal dynamics. This thesis investigates the movement of galjoen and its fishery parameters, and evaluates the role of marine protected areas (MPAs) and alternative assessment …
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Coral reef soundscapes: spatiotemporal variability and links to species assemblages
Coral reefs are biodiverse ecosystems that are at risk of degradation as a result of environmental changes. Reefs are constantly in a state of flux: the resident species assemblages vary considerably in space and time. However, the drivers of this variability are poorly understood. Tracking these …
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Bayesian optimization and Cartesian-grid simulations for artificial reef design
… methods to prevent these effects, natural coral reefs have demonstrated comparable wave energy dissipation to artificial defenses while also providing a positive influence on the ocean ecosystem. Therefore, this thesis presents an artificial reef structure with a drag coefficient that is an order …
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