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The ecology of Bathyporeia pilosa (Amphipoda: Haustoriidae) in the Tay Estuary. I. Factors influencing the distribution on Tayport and Tentsmuir beaches

Published online by Cambridge University Press:  05 December 2011

N. H. Khayrallah
Affiliation:
Tay Estuary Research Centre, University of Dundee
A. M. Jones
Affiliation:
Department of Biological Sciences, University of Dundee
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Synopsis

The distribution of Bathyporeia pilosa is discussed in relation to variations in a number of physical and chemical characters of the sediment on eight transects. Relationships were found between density and median particle diameter, silt content, and water content of the sediment, but stability of the beach appeared to be the main parameter influencing B. pilosa distribution. Sediment preference experiments showed that sediments varied in attractiveness, medium and fine grade sands being preferred: coarse sands and muds were avoided as were sediments with a high silt and clay content. Attractiveness in laboratory conditions was not correlated with observed field densities in some cases, indicating that other parameters were important in determining the distribution. Studies of swimming behaviour demonstrated the importance of current speed during the pelagic phase and it is concluded that hydrological conditions may be as important as sedimentary characteristics in the determination of the distribution of this species.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1980

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