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- W2019940459 abstract "Deep-submersible vehicles provide a platform for acquiring quantitative and behavioral data on the larger, sparse, or more active deep-sea animals which are impossible to obtain by conventional sampling techniques. The distributions and densities of such organisms were established from ciné-camera films taken along a 188-m transect at 1243-m depth. Densities in numbers of organisms/m2 for the following forms were: Ophiomusium lymani (a large ophiuroid) 8.7; Scotoplanes sp. (an elasipod holothurian) 0.01; Anoplopoma fimbria (sablefish) 0.005; Sebastolobus altivelis (crimson thornhead) 0.06. Still photographs, taken simultaneously were also analyzed for O. lymani density. This method gives a higher figure of 15.1 specimens/m2 because small specimens of O. lymani can be distinguished from Amphilepis sp. and other dimunitive ophiuroids. Their distribution is not homogenous. Areas of high and low density exist in close proximity. Wet weight biomass for this species ranges from 22.6 to 39.3 g/m2, high in contrast to reported data for total fauna at similar depths. Observations from other Trieste I dives show relative abundance of O. lymani, Scotoplanes sp., A. fimbria and S. altivelis differs in other areas of the San Diego Trough. Observations suggest that: O. lymani may filter feed; Scotoplanes sp. could be easily washed aside by descending grab samplers; and fishes are relatively insensitive to stimuli created by a deep-submersible vehicle." @default.
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- W2019940459 date "1967-12-01" @default.
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- W2019940459 title "Macrobenthos of the San Diego Trough: photographic census and observations from bathyscaphe, Trieste" @default.
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- W2019940459 doi "https://doi.org/10.1016/s0011-7471(67)80013-5" @default.
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