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 306 for “"Reefs"”.
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Patch reefs off Bermuda
Patch reefs living on the Bermuda Platform provide excellent models for detailed investigation of bioclastic sediment dispersion. Skeletal debris is shed from the reef top to form a wedge of reef flank sediments which angularly onlaps the reef mass at the uppermost reef flank and grades into …
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Acclimating across healthy and degraded reefs
… compositions and selective regimes. The coral reefs of Fiji for example, are divided into ‘fished areas’ (fragments subjected to fishing and trampling) and ‘protected areas’ (fragments with little human pressure) that occur in close proximity and now have differing community compositions and …
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Petrography and Evolution of Niagaran Reefs, Indiana
Made available in DSpace on 2014-12-09T20:34:10Z (GMT). No. of bitstreams: 1 6406166.pdf: 4217270 bytes, checksum: 8d44b27abdfd6057648c4bba25ef8f90 (MD5) Previous issue date: 1963
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The Past and Present of Maldivian Coral Reefs
Coral reefs are highly diverse, valuable, but fragile ecosystems that are experiencing unprecedented degradation from anthropogenic impacts and climate change. Degraded reefs provide poorer ecosystem services, including reduced shoreline protection and diminished livelihoods through declining reef …
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Investigating the ecological role of sound on coral reefs
… their choice of settlement habitat. Coral reefs feature particularly complex natural soundscapes, yet little is known about the potential effects of these sounds on coral larvae. Reef soundscapes are also frequently polluted by anthropogenic noise, which can disrupt natural cues and …
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Paleoecology of Upper Harkless archaeocythan reefs in Esmeralda County, Nevada
… in Esmeralda County, Nevada. These patch reefs were constructed on a shallow, carbonate platform in the subtidal zone by a consortium of archaeocyaths and calcimicrobes (Renalcis). A high diversity of dwelling organisms is found in varying quantities within and surrounding the reefs. …
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Coral reefs of the Indo-Pacific and changes in global Holocene
… records. This thesis examines the role of coral reefs in the oceanic carbonate budget and global carbon cycle both spatially and temporally during the Holocene. Using the most comprehensive reef area estimate to date, a conservative estimate of cumulative CaCO3 accumulation within coral reefs …
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Exploring the climate change refugia potential of equatorial Pacific coral reefs
Global climate models project a 21st century strengthening of the Pacific Equatorial Undercurrent (EUC). The consequent increase in topographic upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching. However, EUC …
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Exploring the climate change refugia potential of equatorial Pacific coral reefs
Global climate models project a 21st century strengthening of the Pacific Equatorial Undercurrent (EUC). The consequent increase in topographic upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching. However, EUC …
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The biological effects of artificial reefs in Smith Mountain Lake, Virginia
Artificial reefs were installed in Smith Mountain Lake, Virginia, during the summer and fall of 1973 to evaluate the biological effects on the aquatic ecosystem. Virtually all sport fishes were attracted to the reef areas. The frequency of sport fish on the reefs generally coincided with their …
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A mechanistic approach to understanding and predicting hydrodynamic disturbance on coral reefs
… on the reef. The carbonate substrate of coral reefs served as the limiting factor to the strength of mechanically threatened coral reef colonies and raises the question of why corals invest resources into building skeletons that are stronger than mechanically necessary. The robust, submassive …
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Structure and development of oyster reefs on the Suwannee River delta, Florida
<p>Three major oyster reefs located off the mouth of the Suwannee River on the west coast of Florida form narrow linear ridges that extend subparallel to shore in directions varying between north and northwest. Two of the reefs, Suwannee Reef and West Gap Reef, form part of an arcuate, …
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Potent but forgotten: nitrous oxide contributions by an ascidian on warming reefs
… sources of microbial N2O production on temperate reefs with their ecological implications and quantifying general levels of public awareness about N2O via a media analysis. I focus on the habitat-forming ascidian Herdmania grandis, which I show is increasing in abundance on warming temperate reefs …
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Quantifying biotic interactions with inshore subtidal structures: comparisons between artificial and natural reefs
Artificial reefs have been deployed purposely worldwide to influence physical and biological processes around coastlines and in inshore waters; often to augment recreational diving and fishing, support environmental mitigation and habitat restoration and, more recently, for scientific research. The …
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Antecedent Geologic Controls on the Distribution of Oyster Reefs in Copano Bay, Texas
… the controls on the distribution of oyster reefs, a geophysical survey of Copano Bay was conducted in June and July 2007. Surficial sediment analysis confirms that the recent sedimentation in Copano Bay is comprised of mostly estuarine mud with little sand or shell, large extents of oyster …
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An Analysis of the International Legal Framework for the Protection of Coral Reefs
… types of reef. These include atolls, fringing reefs and barrier reefs, the most famous being that of the Great Barrier Reef in Australia which covers around 350,000 square kilometres.
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Using biological traits analysis to investigate ecological functioning of cold-water coral reefs
Cold-water coral reefs are fragile, slow growing systems that are found in all oceans. Past research has focused on the species assemblages found on cold-water coral reefs. The species found on cold-water coral reefs are representative of the species assemblages found in the surrounding waters, …
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Honduran cloud forests and coral reefs : exploring the process of transformative learning in adolescents
This research project was based on the experiences of 12 adolescents, aged 16 – 18, who participated in a two-week international scientific expedition to Honduras. Data was collected prior to, during and after the expedition via questionnaires, group interviews and semi-structured individual …
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