Abstract
Population density and dispersion of ten species of freshwater molluscs have been estimated by random quadrat sampling. An apparent association between four of the species is described.
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Calow, P. 1970. Studies on the natural diet of Lymnaea pereger obtusa (Kobelt) and its possible ecological implications. Proc. malac. Soc. Lond. 39: 203–215.
Calow, P. 1973. Gastropod associations within Malham Tarn, Yorkshire. Freshwat. Biol. 3: 521–534.
Cook, P. M. 1949. A ciliary feeding mechanism in Viviparus viviparus (L.). Proc. malac. Soc. Lond. 27: 265–271.
Crow, E. L. & Gardner, R. S. 1959. Table of confidence limits for the expectation of a Poisson variable. Biometrika 46: 441–453.
Elliot, J. M. 1971. Some methods for the statistical analysis of samples of benthic invertebrates. Freshwater biological Association.
Green, R. H. 1966. Measurements of non-randomness in spatial distributions. Res. Popul. Ecol. Kyoto Univ. (1) 8: 1–7.
Griffiths, D. 1973. Structure of an acid moorland pond community. J. Ecol. 42: 263–283.
Hunter, W. R. 1961. Annual variations in growth and density in natural populations of freshwater snails in the West of Scotland. Proc. zool. Soc. Lond. 136: 219–253.
Lilly, M. M. 1953. The mode of life and the structure and functioning of the reproductive ducts of Bithynia tentaculata (L.). Proc. malac. Soc. Lond. 30: 87–110.
Macan, T. T. 1950. Ecology of fresh-water Mollusca in the English Lake District. J. Anim. Ecol. 19: 124–146.
Maitland, P. S. 1964. Quantitative studies on the invertebrate fauna of sandy and stony substrates in the River Endrick, Scotland. Proc. roy. Soc. Edinb. 68: 277–301.
Maitland, P. S. 1965. Notes on the biology of Ancylus fluviatilis in the River Endrick, Scotland. Proc. malac. Soc. Lond. 36: 339–347.
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Bishop, M.J., De Garis, H. A note on population densities of mollusca in the river Great Ouse at Ely, Cambridgeshire. Hydrobiologia 48, 195–197 (1976). https://doi.org/10.1007/BF00028690
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DOI: https://doi.org/10.1007/BF00028690