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 282 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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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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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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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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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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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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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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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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Net Productivity On Artificial Reefs In the Mississippi Sound Estimated From Settlement Plate Measurements
<p>The use of artificial reefs as a coastal management tool has become increasingly popular worldwide. The Mississippi Sound has 67 inshore artificial reefs sites, the main goal of which is to increase the production of economically and recreationally important fish, such as speckled trout, white …
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Predation On The Eastern Oyster Crassostrea Virginica On Intertidal Reefs Affected By Recreational Boating
… environments. Complex, three-dimensional oyster reefs act as havens for biodiversity and contribute to ecological processes. Recently, concern for this resource has arisen in Mosquito Lagoon, Florida, the southernmost limit along the Atlantic coast for undisturbed, intertidal reefs of C. …
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Quantifying the effects of boat wakes on intertidal oyster reefs in a shallow estuary
… on the impacts of boat wakes on intertidal reefs formed by the eastern oyster, Crassostrea virginica. There has been a 24% loss of oyster habitat in ML since 1943, where natural oyster reefs have been replaced by dead oyster reefs which do not serve the same ecological function. While there …
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