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(Article of periodic en Anglais - 2011)

Document title

Effects of stream channel morphology, transport processes and effective discharge on salmonid spawning habitats

Authors(s) and Affiliation(s)

HAUER C. (1) ; UNFER G. (2) ; TRITTHART H. (1) ; HABERSACK H. (1) ;
(1) Christian Doppler Lab. for Advanced Methods in River Monitoring, Modeling and Engineering - Inst. for Water Management, Hydrology and Hydraulic Engineering, Dep. for Water-Atmosphere-Environment, BOKU - Univ. of Natural Resources and Life Sciences, Vienna, AUTRICHE
(2) Inst. of Hydrobiology and Aquatic Ecosystem Management, Dep. for Water-Atmosphere-Environment, BOKU - Univ. of Natural Resources and Life Sciences, Vienna, AUTRICHE

Abstract

The effects of stream channel morphology, transport processes and effective discharge on the salmonid spawning habitats of Thymallus thymallus and Salmo trutta ff. were investigated within the catchment of the Gr. Mühl River, Austria. Based on field survey, one-dimensional and two-dimensional hydraulic and sediment transport modelling, the abiotic characteristics of the spawning sites have been investigated. Application of the Meyer-Peter, Müller and Shields equations for determining critical discharge and critical shear stress revealed differences in the threshold of sediment motion due to the specific grain size sorting of the surface layer, which was dominated by cobbles and sand. The results show that the effective discharge for spawning habitats is a useful tool for spawning habitat restoration, representing the frequency of turnover and renewal of spawning habitats over the long term

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no5 [pp. 672-685]

Bibliographic references : 1,5 p.

Collation : 7 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2087

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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