Journal
CONTINENTAL SHELF RESEARCH
Volume 26, Issue 2, Pages 194-205Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.csr.2005.10.004
Keywords
Atlantic; US Virgin Islands; coral reef; deep hermatypic corals; AUV
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The benthic communities of the deep insular shelf at the Hind Bank marine conservation district (MCD), an important spawning aggregation site for groupers, were studied with the Seabed autonomous underwater vehicle (AUV) at depths between 32 and 54m. Four digital phototransects provided data on benthic species composition and abundance of the insular shelf off St. Thomas, US Virgin Islands. Within the western side of the MCD, well-developed coral reefs with 43% mean living coral cover were found. The Montastrea annularis complex was dominant at all four sites between 33 and 47 in, the depth range where reefs were present. Maximum coral cover found was 70% at depths of 38-40m. Quantitative determinations of sessile benthic populations, as well as the presence of motile megabenthic invertebrates and algae were obtained. The Seabed AUV provided new quantitative and descriptive information of a unique coral reef habitat found within this deeper insular shelf area. (c) 2005 Elsevier Ltd. All rights reserved.
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