J. Moll. Stud. (1994), 60, 315-329
© The Malacological Society of London 1994
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MODERN LAND MOLLUSCA FROM MAIDEN CASTLE, DORSET, AND THEIR RELEVANCE TO THE INTERPRETATION OF SUBFOSSIL ARCHAEOLOGICAL ASSEMBLAGES
School of History and Archacology, University of Wales College of Cardiff P.O. Box 909, CF1 3XU
To aid in the interpretation of molluscan assemblages from archaeological sites, modern land mollusc faunas were analysed from 43 turf samples on a transect of the ramparts of Maiden Castle, Dorset, in chalk grassland. Distinct faunas in terms of species composition, molluscan abundance and species diversity as defined by the Shannon and Brillouin indices were present. They were related to habitat factors, especially lime, structural diversity and warmth. The results allow the identification of different grassland types and show that distinct assemblages can occur in close proximity, delineated by sharp boundaries. However, interpretation of subfossil assemblages from archaeological contexts is best made in terms of general relations of relevance between assemblages and environment because matching by species composition between modern faunas and subfossil assemblages is generally impossible.
(Received 17 November 1993; accepted 1 February 1994)
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