Summary
Ecological studies on Gibbula umbilicalis (da Costa, 1778) were undertaken in Portugal specifically to contribute to the COST 647 programme. This paper describes the reproductive cycle and the annual changes in the population size-structure, and makes comparisons with similar data from the species’ northern geographical limits. The major latitudinal changes are a longer spawning period extending later in the autumn, smaller maximum sizes and shorter life spans.
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© 1987 Dr W. Junk Publishers, Dordrecht
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Gaudèncio, M.J., Guerra, M.T. (1987). Preliminary observations on Gibbula umbilicalis (da Costa, 1778) on the Portuguese coast. In: Heip, C., Keegan, B.F., Lewis, J.R. (eds) Long-Term Changes in Coastal Benthic Communities. Developments in Hydrobiology, vol 38. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4049-9_3
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DOI: https://doi.org/10.1007/978-94-009-4049-9_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8297-6
Online ISBN: 978-94-009-4049-9
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