BIOTIC Species Information for Ulva intestinalis
|Click here to view the MarLIN Key Information Review for Ulva intestinalis|
|Researched by||Georgina Budd & Paolo Pizzola||Data supplied by||MarLIN|
|Refereed by||This information is not refereed.|
|Growth form||Straplike / Ribbonlike
|Mobility/Movement||See additional information
|Typical food types||Photoautotroph||Habit||Attached|
|Bioturbator||Not relevant||Flexibility||High (>45 degrees)|
|Height||10 -30 cm.||Growth Rate||0.15-0.25 cm/day|
|Adult dispersal potential||Not relevant||Dependency||Independent|
|General Biology Additional Information||Growth rate
Parchevskij & Rabinovich (1991) cultivated Ulva intestinalis (as Enteromorpha intestinalis) on horizontally and vertically suspended ropes in coastal Black Sea areas polluted with sewage and waste water effluents. Specific growth rate of the seaweed during the spring-summer period was found to be 0.15-0.25 cm/day. A harvest weight of 2600-3000 g/m2 and 3400-4700 g/m2 was obtained within two weeks on horizontal and vertical ropes respectively.
Ulva intestinalis may become detached from the substratum, and buoyed up by gas, float to the surface where they continue to grow. Such mats of unattached Ulva intestinalis are most frequent in summer. For instance, the occurrence of a summer mass of unattached Ulva intestinalis (as Enteromorpha intestinalis) was studied by Baeck et al. (2000) on the Finnish Baltic Sea west coast. The thalli of the seaweed lost their tubular shape, spread, and formed unattached monostromatic sheets. Mats were between 5-15 cm thick, with a biomass of 97 tonnes in an area of 3.7 km2 in 1993.
|Biology References||McAllen, 1999, Baeck et al., 2000, Parchevskij & Rabinovich, 1991, Clay, 1960b,|