MarLIN

information on the biology of species and the ecology of habitats found around the coasts and seas of the British Isles

A green seaweed (Blidingia minima)

Distribution data supplied by the Ocean Biogeographic Information System (OBIS). To interrogate UK data visit the NBN Atlas.

Summary

Description

Blidingia minima consists of fine, branched or unbranched, hollow green tubes, up to 5 cm long. Groups of tubes arise from the raised centre of a small flattened disc-shaped holdfast that is attached to the rock. Plants reproduce throughout the year, reproductive spores arising from the upper layers of the tubes.

Recorded distribution in Britain and Ireland

Found all round the coast of Britain but rarely reported around the north, east and south coast of Ireland.

Global distribution

Cosmopolitan.

Habitat

Found on hard surfaces, including stones, rocks and boulders on the upper shore and in harbours and estuaries. Occasionally found free-floating in sheltered water. Blidingia minima is found in a range of salinities from almost freshwater to sea water and on exposed and sheltered shores. It may occur mixed with other species.

Depth range

-

Identifying features

  • Fine, green, tubular fronds, up to 5 cm long, branched or unbranched.
  • Attached to rock by raised centre of flattened disc-shaped holdfast.
  • Cells are arranged irregularly and are <10µm in diameter, with stellate chloroplasts.

Additional information

Blidingia minima can be confused with Ulva spp., but can be identified by its smaller, more delicate and sometimes branching tubes, the central disc attachment, its microscopic morphology and reproductive processes.

Listed by

- none -

Further information sources

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Bibliography

  1. Burrows, E.M., 1991. Seaweeds of the British Isles. Volume 2. Chlorophyta. London: British Museum (Natural History).

  2. Hardy, F.G. & Guiry, M.D., 2003. A check-list and atlas of the seaweeds of Britain and Ireland. London: British Phycological Society

  3. Hayward, P., Nelson-Smith, T. & Shields, C. 1996. Collins pocket guide. Sea shore of Britain and northern Europe. London: HarperCollins.

  4. Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]

  5. National Biodiversity Network (NBN) Atlas website. Available from: http://www.nbnatlas.org.  Accessed 01 April 2017

  6. Norton, T.A. (ed.), 1985. Provisional Atlas of the Marine Algae of Britain and Ireland. Huntingdon: Biological Records Centre, Institute of Terrestrial Ecology.

Citation

This review can be cited as:

Avant, P. 2008. Blidingia minima A green seaweed. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. Available from: http://www.marlin.ac.uk/species/detail/1679

Last Updated: 29/05/2008