Introduction Just äs there have been numerous attempts to for* mulate life-form schemes for the flowering plants, so various workers have proposed a number of different life-form schemes for the algae. A study of intertidai algae reveals an empirical relationship of the different morphological types to the character of the habitat, e.g., rocky shore, sandy shore, saitmarsh, etc. Apart, however, from these local habitat factors there are other more general factors which niust be considered in order to account for such phenomena äs the dominance of large kelps in colder waters and the abundance of lime-encrusted forms in warmer waters. The former, is, of course, associated with the failure of the gametophyte generation of the large kelps to reproduce in warm waters, and the latter is regarded äs related to the physiology of calcification and at a more general level the overall problem of calcification in tropical waters. It is true that large areas of calcareous algae have been reported from arctic regions but the number of species involved is small compared with those found in the tropics. In recent years this aspect of algal ecology has received very little attention. In view of the accumulating knowledge in
Botanica Marina – de Gruyter
Published: Jan 1, 1976
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