The macrobenthos of the river IJssel

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Apr 1978 English Publisher:Springer Science and Business Media LLCJournal:Hydrobiological Bulletin, volume 12, pages 21-29 (issn: 0165-1404, eissn: 1573-5125,

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Authors: G. Urk;

doi: 10.1007/bf02260790

The macrobenthos of the river IJssel

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Abstract

This survey of the macrobenthos of the River IJssel, a branch of the River Rhine, was conducted in 1973, 1975, 1976 and 1977. The water quality was poor in 1973 and 1976 and relatively good in 1975 and 1977. The numbers of macroinvertebrate species and numbers of individuals in the stone samples taken from the jetties were lowest in 1976 and highest in 1977. The species composition of the Tubificidae showed a marked difference in various types of substratum at one locality. Decrease of water quality since a study of LAUTERBORN (1918) is reflected by impoverishment of the fauna; for instance, insects have disappeared to a large extent.

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