The behavioural ecology of epibenthic scavenging invertebrates in the Clyde Sea area: Field sampling using baited traps
Nickell, T.D.; Moore, P.G. (1991). The behavioural ecology of epibenthic scavenging invertebrates in the Clyde Sea area: Field sampling using baited traps. Cah. Biol. Mar. 32(3): 353-370
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, more
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| Authors | | Top |
- Nickell, T.D.
- Moore, P.G.
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| Abstract |
Routine monthly sampling was carried out at two regular stations (13 m and 113 m) in the Clyde Sea area, using five small-mesh and five large-mesh baited creels on every occasion. A third station (86 m) was sampled on two occasions with baited funnel traps. A consistently higher species diversity of scavenging invertebrates was found at 113 m than at 13 m. No obvious seasonal changes in species richness occurred. Four dominant species were common to both stations: Asterias rubens, Buccinum undatum, Ophiura albida, and Pagurus bernhardus. Crustacea dominated the list of species at the deep station, headed by P. bernhardus. Total monthly catch of two species (Pandalina brevirostris and Ophiocomina nigra) showed a significant correlation with a notional "Spring Factor" devised to test the theory that variations in current speed over the spring/neap tidal cycle might explain variations in catch. The month catch of the other major species showed no relationship with "Spring Factor". Large numbers of the necrophagous isopod Natatolana borealis and amphipod Scopelocheirus hopei were the only species collected at the third station. |
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