|General Information||Taxonomy and identification||General biology||Habitat preferences and distribution||Reproduction and longevity||Sensitivity||Importance|
Image Paul Newland - Stand of Himanthalia elongata at Outer Hope. Image width ca XX cm.
Image copyright information
Himanthalia elongata is not listed under any importance categories.
|Researched by:||Nicola White||Refereed by:||Dr Dagmar Stengel|
|Phylum||Ochrophyta||Brown and yellow-green seaweeds|
|Recorded distribution in Britain and Ireland||All coasts of Britain and Ireland, except south east England.|
|Habitat information||Himanthalia elongata is found attached to hard substrata on moderately exposed shores. It is found at the bottom of the shore, where it forms a band below Fucus serratus and above laminarians.|
|Description||A common brown seaweed, which has a two stage morphology. Small button-like thalli are first produced, from which long strap-like reproductive fronds (receptacles) are formed in autumn. The strap-like reproductive fronds grow quickly between February and May, reaching a length of up to 2 m. The plant releases gametes from June until the winter when it starts to decay. Plants commonly live for 2-3 years and reproduce once before dying.|
This review can be cited as follows:
Nicola White 2008. Himanthalia elongata. Thongweed. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 20/05/2013]. Available from: <http://www.marlin.ac.uk/speciesfullreview.php?speciesID=3491>