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Numerical Abundance and Biomass of Bacteria, Algae and Macrobenthos of a Large Northern River, the Athabasca
Author(s) -
Barton David R.,
Lock Maurice A.
Publication year - 1979
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19790640306
Subject(s) - macrobenthos , benthic zone , streams , biomass (ecology) , ecology , environmental science , abundance (ecology) , fauna , turbidity , chironomidae , algae , benthos , biology , larva , computer network , computer science
The benthic flora and fauna of a large, turbid, northern river was sampled in autumn. Macroinvertebrate communities on bedrock resembled those of smaller streams but specialized Chironomidae larvae dominated sandy substrates. Bacterial densities on rocks were within the ranges reported from smaller streams. Benthic primary production is probably limited by high turbidity so that most of the energy available to benthic communites is probably allochthonous in origin.