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- Dahlgren, Thomas G., 1963, et al.
(författare)
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A shallow-water whale-fall experiment in the north Atlantic
- 2006
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Ingår i: Cahiers De Biologie Marine. - 0007-9723. ; 47:4, s. 385-389
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Tidskriftsartikel (refereegranskat)abstract
- The study of hydrothermal vent and seep fauna is associated with great costs due to the deep and distant locations. Whale-falls, which are thought to have habitat conditions which overlap seep ecosystems, may be used as a model system to explore questions such as the evolution of dispersal strategies and interactions between hosts and their symbiont microbes. Our discovery of whale-fall fauna at a whale carcass sunk at shelf depth in a Swedish fjord contrasts the apparent lack of specialized organisms from shallow water seep environments. Representatives of a whale-fall fauna found at the Swedish study site include bacterial mat feeding dorvilleid annelids and the whale-bone eating pogonophoran worm Osedax mucofloris Glover et al., 2005. We are maintaining whale-fall fauna alive in aquaria, and initial results from these studies suggest that O. mucofloris has a continuous reproduction life-history strategy.
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- Glover, A. G., et al.
(författare)
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A live video observatory reveals temporal processes at a shelf-depth whale-fall
- 2010
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Ingår i: Cahiers De Biologie Marine. - 0007-9723. ; 51:4, s. 375-381
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Tidskriftsartikel (refereegranskat)abstract
- There have been very few studies of temporal processes at chemosynthetic ecosystems, even at relatively more accessible shallow water sites. Here we report the development and deployment of a simple cabled video observatory at 30 m water depth in Gullmarsfjorden, Sweden. The camera provides a live video feed to the internet of faunal activity in the experiments, which to date have included 5 separate whale-fall deployments. Our data suggest that the time to decomposition of small cetacean carcasses at shelf-depth settings is considerably slower than at deep-sea sites. We have also provided a new methodology for the deployment of low-cost live video observatories at up to 30 m water depth, which can be used both for research and outreach activities.
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