Original paper
Early Winter Diatom Communities in Iceland
Sperling, Jon A.; Blum, John L.
Nova Hedwigia Band 25 Heft 3-4 (1974), p. 567 - 578
25 references
published: Nov 30, 1974
DOI: 10.1127/nova.hedwigia/25/1974/567
ArtNo. ESP050002503003, Price: 29.00 €
Abstract
Sperling, Jon A. and Blum, John L. 1970. Early winter diatom communities in Iceland. Studies of Iceland mesophilic streams in early winter 1968-69 revealed a varied, apparently healthy vegetative population of algae including approximately 200 species of diatoms and several genera of other algae. This vegetation receives little direct solar radiation but winter lighting includes a large diffuse light component in which reflection from the surfaces of aquatic algal habitats is much less than is characteristic of direct radiation. In collections from tepid runoff on steep and unobstructed south-facing slopes filamentous algae, especially Rhizoclonium sp., were dominant. A limited though distinctive diatom community was found in association with aerial mats of Scytonema sp. adjacent to a thermal effluent. Data are presented for early winter to characterize light conditions as well as certain other parameters of water from the collection sites.
Keywords
genera;algae;solar radiation;light component;thermal effluent • Iceland