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Study of temporal variability in benhtic communities´ dynamics using seafloor imagery

AuthorsJuniper, S. Kim; Matabos, M.; Robert, Katleen; Dean, C.; Aguzzi, Jacopo CSIC ORCID ; Tunnicliffe, V.
Issue Date21-Feb-2012
Citation2012 Ocean Sciences Meeting. Abstract book: 227 (2012)
AbstractThe use of imagery systems to study the seafloor is increasing exponentially through the development of undersea observatories and expanded use of submersible vehicles (e.g. ROVs, AUVs). There is thus an urgent need for the development of methodologies for use by all researchers interested in using imagery to study seafloor ecological processes. In Saanich Inlet, BC, the VENUS subsea observatory delivers data via fibre-optic cable and allows interactive access to instruments, including cameras. At 104 m depth, we used a remotely-controlled digital still camera deployed on the seafloor to study the benthic ecosystem dynamics in relation to natural geophysical cycles and environmental change at different temporal scales. We used high-resolution time-series photographic surveys to determine animal abundances and bacterial mat coverage in relation to changes in environmental variables. Photos of the seafloor were taken at appropriate sampling rates that corresponded to the temporal scale of interest. Developed methodology includes image acquisition and processing tools, and adapted statistical techniques. Our results demonstrate how imagery can be used to study community dynamics at temporal scales ranging from hourly to interannual
Description2012 Ocean Sciences Meeting, 20-24 February 2012, Salt Lake City, Utah, USA
Publisher version (URL)http://www.sgmeet.com/osm2012/
Appears in Collections:(ICM) Comunicaciones congresos
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