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Population dynamics of Patella vulgata in Orkney
Baxter, J.M. (1982). Population dynamics of Patella vulgata in Orkney. Neth. J. Sea Res. 16: 96-104
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
Peer reviewed article  

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  • Baxter, J.M.

    A population of Patella vulgata has been studied at Dyke-end, in Orkney. The population had a polymodal distribution, within which several year-classes were identified. Spawning occurred between January and April each year and the first signs of spat settlement were recorded between August and October. Growth was suppressed over the winter months and increased during the summer, although the mature proportion of the population showed a reduction in growth rate at the onset of gonad development. Annual fluctuations in population density were attributed to spat recruitment and subsequent mortality of animals <30mm length; little mortality of larger animals occurred.

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