Letter | Published:

Formation of Microtrees on Surfaces submerged by the Sea

Naturevolume 212pages308310 (1966) | Download Citation



THIS communication deals with some very distinctive formations originally noticed during routine investigations on seasonal fouling in the Menai Straits. The investigations were part of a project based on regular observations of the marine growths attaching to ‘Tufnol’ panels exposed for various time intervals from an anchored raft. Kite brand ‘Tufnol’, a paper based phenol-formaldehyde bonded material, is used in the investigation. The panels are exposed parallel to the direction of the main flow of current, which attains a velocity of 90 cm/sec on spring tides. The turbidity of the water varies from a Secchi disk extinction of 0.5 m to 5.0 m corresponding to 0.5 mg/l. to about 40 mg/1. ash weight of suspended material, the heaviest loads being carried in winter1.

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  1. 1

    Buchan, S., Floodgate, G. D., and Crisp, D. J. (in preparation).

  2. 2

    Floodgate, G. D., J. Mar. Biol. Assoc. U.K., 44, 368 (1964).

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  1. The Marine Science Laboratories, University College of North Wales, Menai Bridge, Anglesey

    • A. O. CHRISTIE
    •  & G. D. FLOODGATE


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