The colonization of Berkshire, England, by land and freshwater Mollusca since the Late Devensian
Holyoak, D.T. (1983). The colonization of Berkshire, England, by land and freshwater Mollusca since the Late Devensian. J. Biogeogr. 10(6): 483-498. https://dx.doi.org/10.2307/2844606
In: Journal of Biogeography. Wiley-Blackwell: Oxford. ISSN 0305-0270; e-ISSN 1365-2699, more
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| Abstract |
The Late Devensian and Flandrian History of land and freshwater mollusca in Berkshire is summarized on the basis of fossil records from nine sites. Palynological studies at the same sites, combined with radiocarbon dating, provide a chronological framework within which the records of Mollusca are classified. The Flandrian fossils reported represent 89% of the modern land-snail fauna (excluding recent introductions) plus six species that became extinct in the region during the Flandrian (fifty-six land-snail species in total). Forty-two freshwater species were represented by Flandrian records (84% of the modern fauna, excluding recent introductions). The timing of the arrival of both terrestrial and freshwater species in the region is compared with the timing reported from elsewhere in Britain. Other changes in the land-snail faunas are attributed partly to reduction (not elimination) of unshaded habitats as forests expanded in the early-Flandrian and to loss of shaded habitats due to forest destruction in the late-Flandrian. |
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