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Recent changes in the status of some Clyde vertebrates

Published online by Cambridge University Press:  05 December 2011

J. A. Gibson
J. A. Gibson
Affiliation:
Scottish Natural History Library, Foremount House, Kilbarchan, Renfrewshire PA 10 2EZ, Scotland
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Synopsis

Three comprehensive surveys of Clyde vertebrates have been carried out during the past twenty-five years, and this exceptional degree of investigation permits some very valid comparisons to be made. Distinct changes in status have taken place throughout all the vertebrate classes. The work of man has had the most obvious impact. This is sometimes deliberate, as in direct attempts at species protection or destruction. At other times the impact of man is indirect, with effects on food supply, on habitat, or on health. Occasionally the effects are accidental. Many status changes are easily explained under the above headings, but others are not, and some show apparently opposite changes in closely-related species. Some changes in status are very real, and indeed are sometimes quite dramatic and obvious for all to see. Others are more apparent than real, presumably arising from increased observation. A representative selection of species is discussed.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 90: The Environment of the Estuary and Firth of Clyde , 1986 , pp. 451 - 467
Copyright
Copyright © Royal Society of Edinburgh 1986

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