Zooplankton Of The Bristol Channel And Severn Estuary - The Distribution Of 4 Copepods In Relation To Salinity

Collins, NR; Williams, R. 1981 Zooplankton Of The Bristol Channel And Severn Estuary - The Distribution Of 4 Copepods In Relation To Salinity. Marine Biology, 64 (3). 273 - 283.

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Abstract/Summary

The seasonal variations in distribution and abundance of the common zooplankton species in the Bristol Channel and Severn Estuary were related to the salinity regimes observed over the period November 1973 to February 1975. The dominant constituents in all regions were the calanoid copepods, which reached maximum densities in July: approximately 100 times their winter levels. Four zooplankton assemblages were recognised using an objective classification program which computed similarity coefficients and used group-average sorting. The assemblages existed along the salinity gradient observed from the Severn Estuary to the Celtic Sea. The assemblages were classified as true estuarine, estuarine and marine, euryhaline marine and stenohaline marine and were characterized by the copepods Eurytemora affinis (Poppe) (<30‰S), Acartia bifilosa var. inermis (rose) (27 to 33.5‰S), Centropages hamatus (Lilljeborg) (31 to 35‰S) and Calanus helgolandicus (Claus) (>33‰S), respectively.

Item Type: Publication - Article
Divisions: Plymouth Marine Laboratory > Other (PML)
Depositing User: EPServices Admin
Date made live: 11 Feb 2014 15:54
Last Modified: 06 Jun 2017 16:03
URI: http://plymsea.ac.uk/id/eprint/2761

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