Comparative drift studies on streams in lower Austria (Flysch, gneiss and chalk formations) [Translation from: Schweizerische Zeitschrift fur Hydrobiologie 30 138-185, 1968.]

Weninger, G. (1983) Comparative drift studies on streams in lower Austria (Flysch, gneiss and chalk formations) [Translation from: Schweizerische Zeitschrift fur Hydrobiologie 30 138-185, 1968.]. Windermere, UK, Freshwater Biological Association, (FBA Translations (New Series), 163)

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Abstract

Seasonal changes and flooding have an extraordinarily great influence on the drift of organisms. The free water space plays the main part in the provision of food for some fish (Salmo trutta - trout): drift and content of the stomach are balanced here (Simuliidae): whereas others (Thymallus vulgaris) only selectively chose certain animals living at the bottom (molluscs). The total drift, drift of organisms and drift of organic material and minerals, plays a main role in the rate of production in streams. Besides the biology of the organisms living on the river bed, also the geological and hydrographical situation of the area plays a very important role for the composition of the drift. During the years 1964-1966 three streams in the characteristical geological formations flysch, gneiss and chalk of lower Austria were studied in regard to their drift. The Tulln (above St. Christopen), the Krems (above Senftenberg) and the Schwarza (above Hirschwang) seemed to be ideal for this comparative study because they are easy to reach. After summarising the hydrography and chemistry of examined rivers, the author examines the relationship between water level and total drift and the stratification of the total drift before analysing the drift of living organisms. Also considered are seasonal changes of drift of organisms and drift of exuviae.

Item Type: Monograph or Serial Issue
Title: Comparative drift studies on streams in lower Austria (Flysch, gneiss and chalk formations) [Translation from: Schweizerische Zeitschrift fur Hydrobiologie 30 138-185, 1968.]
Personal Creator/Author:
CreatorsEmail
Weninger, G.
Series Name: FBA Translations (New Series)
Number: 163
Date: 1983
Publisher: Freshwater Biological Association
Place of Publication: Windermere, UK
Issuing Agency: Freshwater Biological Association
Additional Information: Translated from Russian into English
Uncontrolled Keywords: Rivers; Drift; Current data; Surveys; Stream flow; Aquatic animals; Hydrographic surveying; Hydrography; Austria
Subjects: Biology
Ecology
Limnology
Item ID: 4919
Depositing User: Hardy B Schwamm
Date Deposited: 10 Mar 2011 09:15
Last Modified: 29 Sep 2011 15:43
Related URLs:
URI: http://aquaticcommons.org/id/eprint/4919

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