Field and culture studies of species ofGelidium(Gelidiales, Rhodophyta) from their northern limit of distribution in Europe
✍ Scribed by J. Rueness; S. Fredriksen
- Book ID
- 104618578
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 329 KB
- Volume
- 204-205
- Category
- Article
- ISSN
- 1573-5141
No coin nor oath required. For personal study only.
✦ Synopsis
Two species of Gelidium, provisionally referred to as G . pusillum and G . latifolium, are included in the Scandinavian flora and reach their northern limit of distribution on the Norwegian west coast . Small frond sizes due to adverse growth conditions, extreme phenotypic variability and lack of sexual reproduction make identification of specimens very difficult. Both species were isolated into unialgal culture and were compared with cultured strains referable to G . pusillum from Ireland and France . Temperature and salinity requirements and tolerance ranges were determined and discussed in view of distribution along the Norwegian coast . Little or no growth occurs below 9 'C, corresponding to a northern summer growth limit . On the Norwegian Skagerrak coast, low winter temperature rather than reduced salinity is the limiting factor .