Harper, Matthew P.,

Thesis (M.S.)--Brigham Young University. Dept. of Geology, 2004. / Includes bibliographical references (p. 30-33).

Williams, Thomas Wayne,

Thesis (Ph.D.) -- Virginia Commonwealth University, 2006. / Title from title-page of electronic thesis. Prepared for: Center of Public Policy. Bibliography: leaves 127-132.

Barr, Julie M.

Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references. Also available on the World Wide Web.

Brown, Laura Alicia

Oyster reefs provide estuaries with ecosystem services including carbon sequestration, shoreline stabilization, refugia for invertebrate biodiversity, and fisheries enhancement, but have been disappearing over the past century due to increasing overharvesting, disease, and eutrophication. The northern Gulf of Mexico has over 400 artificial oyster reefs constructed of various materials created through efforts to restore ecosystem services lost with declining oyster populations. The purpose of thi...

Nix, Elizabeth Ashby

Oyster reefs have recently been identified as one of the most endangered coastal ecosystems, fueling efforts to restore and enhance these systems. Oyster reefs located in the northern Gulf of Mexico have been identified as some of the healthiest of reefs globally, and current efforts focus on devising an approach to Gulf-wide restoration of these reefs. As with all natural resource management and restoration, success is dependent on more than simply understanding the biological requirements of t...

Eytan, Ron Israel

Neotropical coral reef fish communities are species-poor compared to those of the Indo-West Pacific. An exception to that pattern is the blenny clade Chaenopsidae, one of only three coral reef fish families endemic to the Neotropics. Within the chaenopsids, the genus Acanthemblemaria is the most species-rich. To understand the origin and maintenance of genetic and species diversity in these fishes, I characterized the population genetics for two Acanthemblemaria species, reconstructed the phylog...

Easton, Ryan Reid

The nearshore waters off the Oregon coast (< 73 meters) are a region of high productivity and economic value, with a variety of habitats that include rock outcrops. Temperate reef habitats are important to many commercially important fishes inhabiting the Pacific coast, including canary rockfish (Sebastes pinniger) and yelloweye rockfish (Sebastes ruberrimus), which are currently listed as "overfished" by the Pacific Fishery Management Council. Along the Pacific coast of North America, nearshore...

Bojakowski, Piotr

The Western Ledge Reef Wreck, discovered and later excavated in Bermuda between 1989 and 1991, is a prime example of Iberian shipbuilding within a broader Atlantic context. Operating during the late 16th-century, arguably one of the most fascinating periods of Spanish maritime history, the ship epitomizes the culture and technology identified with the celebrated fleets of the Carrera de Indias. By combining the new and previously unavailable data with that of the original reports, this dissertat...

Schroeder, Robert E

The ecology of patch reef fishes was studied to quantify the main factors that affect the natural variability of the fish community and to determine the effects produced on the community by experimental removal of predators. Initially, a year-long baseline description was completed of the physical, biological and ecological characteristics of 8 pristine patch reefs at Midway lagoon. For over 3 subsequent years, piscivorous predators were spearfished at least monthly, often for days at a time, on...

Kuffner, Ilsa Boysen

Shallow-dwelling scleractinian corals live in high irradiance environments where they are exposed to large fluxes of ultraviolet radiation (UVR, 280 - 400 nm). A suite of UV-aborbing compounds, know as mycosporine-like amino acids, is found within the tissues of coral-algal symbioses and may perform a sun-screening role. The seasonal variation in MAA concentration was investigated for two corals in Kaneohe Bay, Hawai'i, Porites compressa and Montipora verrucosa. Regressions of MAA concentration ...

Leung, Kim-fung., 梁劍峰.

published_or_final_version / Ecology and Biodiversity / Doctoral / Doctor of Philosophy

Hoffman, Richard Gurney

No description available.

Reeves, David Bradley

Nearshore Louisiana has experienced substantial changes within the last half-century, including the annual formation of the worlds second largest hypoxic zone and the construction of thousands of oil and gas platforms (rigs). Ship Shoal and its rigs may provide important substrate in nearshore Louisiana because rigs act as de facto artificial reefs and the shoals bottom waters were well oxygenated on 43% of days when surrounding areas were hypoxic. From July to September of 2014, fish assemblage...

Aisner, Rachel E.

The Mural Limestone, located in the Mule Mountains to the northeast and southeast of Bisbee, Arizona provides an exceptional outcrop analog for time-equivalent productive reservoirs in the Albian Glen Rose patch-reef play of the Maverick Basin. The Mural Limestone is exposed in a number of folds and east-dipping fault blocks in the Grassy Hill and Paul Spur localities in the Mule Mountains and represents a remnant of a south-facing distally-steepened carbonate ramp that prograded into the Chihua...

Ory, Nicolas Christian

Predators can affect prey by increasing their mortality, or may reduce the fitness of prey which modify their behaviours in response to predation risks (i.e. risk effects). Non-lethal effects of predators on prey behaviours are still poorly understood, although they may have cascading effects through food webs. This thesis examined the effect of habitat structure and symbiotic associations on the interaction between predatory fish and three rhynchocinetid shrimps: Rhynchocinetes typus in tempera...

Frost, Edmund Locke, 1974-

Carbonate facies patterns and stratal architecture are the product of the complex interaction of internal (e.g., reef-building biota, sediment production) and external drivers (e.g., tectonics, climate, and relative sea level). In the Canning Basin of Western Australia, many of these drivers are in flux across the Late Devonian Frasnian--Famennian (F--F) boundary and significant variations in reefbuilding biota and long-term accommodation are observed. This study documents the evolution of the C...

Böcker, Aron

In this study reef corals from two Caribbean and adjacent regions in different periods were investigated. Sclerochronological records of corals from well preserved Miocene to Pleistocene reefs were used to document potential changes in seasonal and interannual climate associated with CAS uplift and closure. In southern Florida the Plio/Pleistocene Caloosahatchee Formation is cropping out. During the deposition of this stacked shallow marine sediments at the Plio/Pleistocene Florida carbonate pla...

Drumm, Darrin Jared, n/a

Throughout the Pacific, many species of echinoderms and molluscs have cultural value and are harvested extensively in subsistence fisheries. Many of these species are sedentary and often associated with distinct reef-top habitats. Despite the significance of reef habitats and their fauna for fisheries and biodiversity etc, little information has been available on the distribution of habitats and their influence on the reef-top fauna in the Cook Islands. This thesis developed a novel approach to ...

Copertino, Margareth.

Includes bibliographical references (leaves 235-258). Estimates the primary production and investigates the photosynthetic performance of temperate turfs at West Island, off the coast of South Australia. These communities play a fundamental role in reef ecology, being the main source of food for grazers, both fishes and invertebrates. Turfs also have an important function in benthic algal community dynamics, being the first colonizers on disturbed and bare substratum.

Hart, Deirdre E., Physical, Environmental & Mathematical Sciences, Australian Defence Force Academy, UNSW

This thesis examines functional relationships between the morphologic, hydrodynamic, ecological and sedimentological characteristics of the Warraber reef platform, an inter-tidal reef island system, Central Torres Strait, Australia (10[degrees] 12??? S, 142 [degrees] 49??? E). Hydrodynamic and sediment-transport experiments were conducted on the reef flat using current meters, water level recorders and directional sediment traps. Results showed dominantly SE flows during the dry season and more...

Dornburg, Alex

<p> The integration of advances in computing technology with major innovations in sequence data collection and phylogenetic inference has revolutionized evolutionary biology in the 21^st century. In particular, the continual development of both theory and software that allow for more flexibility in utilizing molecular clock methods has radically transformed our understanding of the mode and tempo of diversification across the Tree of Life. Over the course of five chapters, this dissert...

Klotzbach, Kari Elizabeth

Louisianas coastal estuaries are dynamic, highly variable environments that provide nursery areas for numerous recreationally and commercially important species. Louisianas coastline is constantly changing due to natural and anthropogenic processes, and it is important to know how nektonic species are impacted by such changes. This study sought to assess the effects of introducing a hard substrate artificial reef on the nekton community of a Louisiana estuary. A before-after-control-impact (BACI...

Toohey, Benjamin D

[Truncated abstract] Kelp beds of South-Western Australia have high alpha (within habitat) diversity, through high species turnover at small spatial scales. The E. radiata canopy has a strong negative influence on the diversity of the understorey through intense interspecific competition for light. Literature suggests that when the competitively dominant species such as E. radiata are physically removed, diversity will increase, as less competitive species become more abundant. Apart from distur...

Shiell, Glenn Raymond

[Truncated abstract] Aspects of the biology of the commercial sea cucumber Holothuria whitmaei were investigated at Coral Bay, Ningaloo Reef, Western Australia. The study was partitioned into several components: i) spatial distribution, ii) temporal changes in behaviour and iii) reproduction biology. The spatial distribution of H. whitmaei at Coral Bay was typical of that reported in the literature. H. whitmaei had distinct preferences for outer reef habitats, including the outer reef flat and r...

Garvis, Stephanie

The goal of this project was to determine the effects of oyster reef restoration on oyster coverage, wave height dissipation and seagrass recruitment. First, to assess the current versus historical coverage of natural, dead and restored oyster reefs within Mosquito Lagoon, aerial photographs from 2009, provided by Saint Johns River Water Management District, were digitized using ArcGIS software. Live reefs, restored reefs and dead reefs were screen digitized using a reef 'signature' in order to ...

Sorey, Laura Carolyn

A large Pleistocene age sinkhole, the Blue Hole on Lighthouse Reef off the coast of Belize in the Caribbean Sea is the site of a well preserved sedimentary record that serves as paleoclimatology and paleotempestology archive. The nutrient-starved surface waters of the Blue Hole and the surrounding lagoons are fertilized by the seasonal introduction of cool, nutrient-rich waters upwelled from the Caribbean deep water. These waters, which stimulate production of organic materials within the surfac...

Sabbagh, Stéphanie Marie

Sharks play an important ecological role in the structure and resilience of coral reefs. Research indicates a worldwide decline of sharks at an unprecedented rate, yet sharks are often not protected. Belize, a small Central American nation bordered by the Mesoamerican Barrier Reef, is not an exception. This thesis presents the results of an exploratory qualitative study into the attitudes and perceptions of shark stakeholders in Belize and assesses their relative importance and influence on shar...

Drivet, Eva

Dolomitization of Leduc Formation (Upper Devonian) along the southern part of the Rimbey-Meadowbrook trend in central Alberta occurred early by pervasive replacement, and later by minor cementation. Replacive dolomitization postdates submarine cementation and deposition of overlying shales, overlaps stylolitization, and produces $ delta sp{18}$O values indicating precipitation between 45 and 75$ sp circ$C. Therefore, this dolomitization likely originated at burial depths of more than 500 m. Stro...

Miller, James.

No description available.

Largatzis, Savvas Anthony

Despite decades of research and its economic importance, the formation of the Merensky Reef still remains controversial. This study reports on the distribution of platinum-group elements within widereef facies in an attempt to identify petrogenetic controls in the formation of the Merensky Reef. Widereef Merensky was sampled from Eland Platinum Mines in the western Bushveld. Macroscopic investigation of the drillcore identified a basal chromitite stringer overlying an anorthositic footwall. The ...

Wass, Richard Charles

Typescript. / Bibliography: leaves [212]-219. / xii, 219 l illus., tables

Turley, Brendan Douglas

A panel of 48 single nucleotide polymorphism markers (SNPs) was developed for use in a population genetic analysis of the Eastern Oyster Crassostrea virginica sampled from the lower Chesapeake Bay. The SNPs were developed from published and unpublished sequencing data and developed to be used on a Fluidigm Biomark. A selection of 95 SNPs were chosen initially for development and the best 48 were selected for downstream applications. This project was a collaboration with the non-profit Chesapeake...

Harding, Juliana Maria

Restoration of oyster reef structures rehabilitates habitats and the multi-level ecological communities built on eastern oysters (Crassostrea virginica), the keystone species. Quantitative descriptions of ecological interactions within a habitat are required to delineate essential fish habitats for management and protection. Parallel development of primary (oysters) and secondary trophic levels (benthic fishes) offer an ecological metric of restoration progress over time. The interaction between...

Sorabella, Laurie Ann

No description available.

Southworth, Melissa J.

No description available.

Proft, Heinz Michael

No description available.

Oyster reefs are biodiverse communities that provide many ecological and commercial benefits. However, oyster reefs have declined around the world from human activities. Oyster reef restoration programs have begun to limit some of the decline, but the need for determining the success of a program has been problematic. Passive acoustic techniques can use naturally occurring sounds produced by organisms to assess biodiversity. Passive acoustics was utilized to compare the sounds in natural and res...

Oyster reefs support diverse estuarine communities and food webs. Factors controlling oyster reef community development were studied on restored reefs in the St. Lucie Estuary. Freshwater discharges create stresses that cause oyster mortality, habitat loss and reduction in reef community diversity. Using structural equation modeling, it was demonstrated that salinity, turbidity, and chlorophyll-a gradients influence oysters and some reef invertebrate species, but did not support the predictions ...

Troyer, Emily

Knowledge of biodiversity within an ecosystem is essential when trying to understand the function and importance of that ecosystem. A challenge when assessing biodiversity of reef habitats is cryptobenthic fishes, which encompass many groups that have close associations with the substrate. These fishes can be behaviorally cryptic, by seeking refuge within the reef matrix, or visually cryptic, using cryptic coloration to match the surrounding habitat. These factors make visual surveys inadequate ...

Dube, Zamani Addmore

Geological and geophysical investigations involving drill-core studies, aeromagnetic data and surface mapping at the De Wildt property in the south-eastern part of the western limb of the Bushveld Complex have revealed a highly variable UG2 chromitite layer and a wide Merensky Reef (Merensky Reef) layer. A full stratigraphic succession of the Rustenburg Layered Suite of the Bushveld Complex is not developed at De Wildt. Instead, the Lower Zone and Lower Critical Zone are not developed and the Up...

Stipanov, Aeron

Research report submitted to the School of Architecture and Planning, University of the Witwatersrand, in fulfillment of the requirements for the Masters of Architecture (Professional). Submitted on 7 February 2018 / Johannesburg is as a polyglot city; a contrived conurbation of remarkably disparate contexts within a single urban boundary. Today it is a city that cannot be read as a comprehensive whole, as philosopher Achille Mbembe (2008:59) suggests, it is “a metropolis increasingly forc...

Fourie, Andries

A dissertation submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, in fulfilment of the requirements for the degree of Masters in Engineering. 13st October 2015 / This study examines the history of underground face sampling since the earliest writers documented their findings regarding the method. An historical review of the errors associated with sampling is followed by a discussion of findings from a number of underground investigations. Th...

Esterhuyse, Johann Christoff

A dissertation submitted to the Faculty of Engineering and Built Environment, University of the Witwatersrand, Johannesburg, in fulfillment of the requirements for the degree of Master of Science in Engineering. 2017 / Even after years of mining, a vast gold resource remains in the Carletonville area of the Witwatersrand basin. Mining in this area nevertheless predates 1934 and the accessible ore-reserves on the primary reefs are being depleted. Mining of secondary reefs and remnants has ther...

Zvarivadza, Tawanda

Platinum is amongst the extremely valuable resources so every effort has to be made to ensure its safe and economic extraction. The success of a bord and pillar mining method in the exploitation of platinum heavily depends on a comprehensive and competent pillar design method. Pillars need to be large enough to contain load and to be small enough to avoid loss of resource. An optimum pillar design method achieves such a scenario. Without this a mine is destined for disastrous consequences either...

Watson, Bryan Philip

PhD, Faculty of Engineering and the Built Environment, University of the Witwatersrand, 2010 / The aim of this investigation was to provide a proper design procedure for Merensky crush pillars, based primarily on underground measurements. Three sites with a variety of geotechnical conditions were selected. An interaction between the pillars and the rock mass around the stopes was shown by the literature, relevant laboratory tests and numerical modelling. During the investigations, nonlinear...

Wansbury, Nicole Tracy

A Dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfillment of the requirement for the degree of Master of Science. 2016. / An important feature of the Merensky Cyclic Unit in the Bushveld Complex is the association of platinum group metals with narrow chromitite layers. The appearance and removal of chromitite layers in this unit has been used to define facies types. This study explores the hypothesis that individual chromitite layers w...

Brecher, Yvonne

This dissertation is based on the notion of exploring the relationship between above and below surface, in order to unlock their coexistence. By exploring these elements in conjunction, an uneasy tension emerges that evokes the uncanny. The focus is to translate and articulate the state of suspension/tension in an architectural language. Proposing a Choral and Opera chamber to accommodate cultural performances within a former mineshaft in Boksburg is to set up an essential argument about...

Rasmussen, Stephen Eric

The technique of instrumental neutron activation analysis as applied to the analysis cf geological material has beer siudiel with particular emphasis on methods of reducing or eliminating analytical errors. The neutron flux gradients in the reactor irradiation facilities used were found to introduce errors of up to 20%. The use of iron foils to monitor both the thermal and fast neutron flux received by individual samples has been shown to reduce iiradiation errors to approximately 1%. The...

Stewart, Robert W

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology, 1951. / Vita. / Includes bibliographical references (leaf 171) and index. / by Robert W. Stewart. / Ph.D.

Zumberge, John Edward, 1948-

No description available.