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

dc.check.embargoformatNot applicableen
dc.check.infoNo embargo requireden
dc.check.opt-outNoen
dc.check.reasonNo embargo requireden
dc.check.typeNo Embargo Required
dc.contributor.advisorWheeler, Andrewen
dc.contributor.authorLim, Aaron
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2017-05-30T10:40:42Z
dc.date.available2017-05-30T10:40:42Z
dc.date.issued2017
dc.date.submitted2017
dc.description.abstractCold-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.description.statusNot peer revieweden
dc.description.versionAccepted Version
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLim, 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.endpage201en
dc.identifier.urihttps://hdl.handle.net/10468/4031
dc.language.isoenen
dc.publisherUniversity College Corken
dc.rights© 2017, Aaron Lim.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectCold water coral reefen
dc.subjectHabitat mappingen
dc.subjectSedimentsen
dc.subjectCurrentsen
dc.subjectSeabed mappingen
dc.subjectSpatial analysisen
dc.subjectReef developmenten
dc.thesis.opt-outfalse
dc.titleSpatio – temporal patterns and controls on cold-water coral reef development: The Moira Mounds, Porcupine Seabight, offshore Irelanden
dc.typeDoctoral thesisen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD (Science)en
ucc.workflow.supervisora.wheeler@ucc.ie
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