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| Lim, Aaron; Kane, Adam; Arnaubec, Aurelien; Wheeler, Andrew J.. |
| Cold-water coral (CWC) habitats are commonly regarded as hotspots of biodiversity in the deep-sea. However, a standardised approach to monitoring the effects of climate change, anthropogenic impact and natural variability through video-surveying on these habitats is poorly-established. This study is the first attempt at standardising a cost-effective video-survey design specific to small CWC mounds in order to accurately determine the proportion of facies across their surface. The Piddington Mound of the Moira Mounds, Porcupine Seabight, offshore Ireland has been entirely imaged by downward-facing video in 2011 and 2015. The 2011 video data is navigated into a full-mound, georeferenced video mosaic. A quadrat-based manual classification of this video... |
| Tipo: Text |
Palavras-chave: Cold water corals; Mounds; Video survey design; Sediments; Habitat mapping. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00403/51482/53728.pdf |
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| Lim, Aaron; Wheeler, Andrew J.; Arnaubec, Aurelien. |
| Framework-forming cold-water corals (CWC's) such as Lophelia pertusa and Madrepora oculata generate positive topographic features on the seabed called CWC mounds. In the North East Atlantic, CWC mounds have been studied in detail and reveal heterogeneous spatial on-mound organisation of coral patches. Many of these studies are limited by a paucity of remotely-sensed and video imagery at an appropriate resolution and coverage. This study is the first attempt to video mosaic an entire CWC mound (the Piddington Mound of the Moira Mounds, Porcupine Seabight, Irish margin). The mosaic is divided into 18,980 0.25 m2 cells with a manual classification applied to each within a geographic information system (GIS). Geospatial analysis shows that cell distribution is... |
| Tipo: Text |
Palavras-chave: Cold-water coral; Habitat mapping; Spatial analysis; Sediments; Fades distribution. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00390/50129/50732.pdf |
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| Wheeler, Andrew J.; Beyer, A; Freiwald, A; De Haas, H; Huvenne, V. A. I.; Kozachenko, M; Olu, Karine; Opderbecke, Jan. |
| Cold-water coral carbonate mounds, owing their presence mainly to the framework building coral Lophelia pertusa and the activity of associated organisms, are common along the European margin with their spatial distribution allowing them to be divided into a number of mound provinces. Variation in mound attributes are explored via a series of case studies on mound provinces that have been the most intensely investigated: Belgica, Hovland, Pelagia, Logachev and Norwegian Mounds. Morphological variation between mound provinces is discussed under the premise that mound morphology is an expression of the environmental conditions under which mounds are initiated and grow. Cold-water coral carbonate mounds can be divided into those exhibiting "inherited"... |
| Tipo: Text |
Palavras-chave: Seabed mapping; Environmental setting; Morphology; Cold water coral; Carbonate mound. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2411.pdf |
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