Spatio – temporal patterns and controls on cold-water coral reef development: The Moira Mounds, Porcupine Seabight, offshore Ireland

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dc.contributor.advisor Wheeler, Andrew en
dc.contributor.author Lim, Aaron
dc.date.accessioned 2017-05-30T10:40:42Z
dc.date.available 2017-05-30T10:40:42Z
dc.date.issued 2017
dc.date.submitted 2017
dc.identifier.citation Lim, A. 2017. Spatio – temporal patterns and controls on cold-water coral reef development: The Moira Mounds, Porcupine Seabight, offshore Ireland. PhD Thesis, University College Cork. en
dc.identifier.endpage 201 en
dc.identifier.uri http://hdl.handle.net/10468/4031
dc.description.abstract Cold-water corals (CWC) are sessile, filter-feeding organisms that develop a three dimensional framework. Where sediment supply is significant, it acts as a major influence on the development of cold-water coral reefs through sediment baffling by corals and hydrodynamic-topographic interactions. While previous work has demonstrated this effect on a regional scale or across large coral carbonate mound structures, this study examines an individual CWC reef, Piddington Mound, and a chain of small reefs, the westernmost (or downslope) chain of the Moira Mounds, and their sedimentary environment on a discrete area of seabed (<10 km in length) to better constrain the specific processes which affect CWC reef development and variability. Here, we utilise ROV-based video data, full reef coverage video mosaics, 30 kHz side-scan sonar backscatter, ROV-mounted bathymetry, water column data (CTD's) and surface sediment samples to investigate mound development and processes at various scales (reef and reef-chain). Analyses of three distinct seabed zones across the downslope Moira Mounds area show that the optimum area for reef development here is between 38 and 41 cm s-1. Using high resolution video mosaics and microbathymetry, the first full-reef facies distribution model is developed. With this detailed facies distribution model, a series of recommendation are put forward for studying similar sized reefs in the future. Using this information, the minimum number of samples and how to best collect these samples are identified. This methodology is reapplied to the reef 4 years later suggesting that over 20 years, the entire mound surface may change. This provides implications for the studying these reefs using both individual samples and temporally-distal samples. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2017, Aaron Lim. en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/ en
dc.subject Cold water coral reef en
dc.subject Habitat mapping en
dc.subject Sediments en
dc.subject Currents en
dc.subject Seabed mapping en
dc.subject Spatial analysis en
dc.subject Reef development en
dc.title Spatio – temporal patterns and controls on cold-water coral reef development: The Moira Mounds, Porcupine Seabight, offshore Ireland en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PhD (Science) en
dc.internal.availability Full text available en
dc.check.info No embargo required en
dc.description.version Accepted Version
dc.contributor.funder Irish Research Council en
dc.description.status Not peer reviewed en
dc.internal.school Biological, Earth & Environmental Sciences en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out No en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
ucc.workflow.supervisor a.wheeler@ucc.ie
dc.internal.conferring Summer 2017 en


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© 2017, Aaron Lim. Except where otherwise noted, this item's license is described as © 2017, Aaron Lim.
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