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Geographic variation in the abundance and morphology of the bryozoan Alcyonidium diaphanum (Ctenostomata: Alcyonidiidae) in UK coastal waters Porter, J.S.; Ellis, J.R.; Hayward, P.J.; Rogers, S.I.; Callaway, R. (2002). Geographic variation in the abundance and morphology of the bryozoan Alcyonidium diaphanum (Ctenostomata: Alcyonidiidae) in UK coastal waters. J. Mar. Biol. Ass. U.K. 82(4): 529-535. https://dx.doi.org/10.1017/S0025315402005842 In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, meer

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Trefwoorden

Abundance Biology > Organism morphology > Animal morphology Distribution > Geographical distribution Alcyonidium diaphanum (Hudson, 1778) [WoRMS] ANE, British Isles [Marine Regions] Marien/Kust

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Auteurs		Top
Porter, J.S., meer Ellis, J.R. Hayward, P.J., meer	Rogers, S.I. Callaway, R.

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Abstract

The ctenostome bryozoan Alcyonidium diaphanum is widespread and abundant in the coastal waters of England and Wales. It was recorded in 77-90% of beam trawl catches in the eastern English Channel and southern North Sea, and in 53-73% of catches in the Bristol Channel and Irish Sea. The maximum catch rates in these two study areas were 1410 and 751 kg h-1 respectively. Alcyonidium diaphanum was most abundant in the greater Thames Estuary. Additional data from the North Sea indicated that A. diaphanum is widely distributed throughout the southern North Sea. Alcyonidium diaphanum was found intertidally in only seven of 99 locations sampled. Several different morphotypes were observed, ranging from cylindrical to lobate forms. The distribution patterns of various morphotypes are discussed.

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