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(Article of periodic en Anglais - 2008)

Document title

Characterisation of river reaches : the influence of rock type

Authors(s) and Affiliation(s)

HARVEY G.L. (1) ; GURNELL A.M. (2) ; CLIFFORD N.J. (1) ;
(1) School of Geography, Univ., Nottingham, ROYAUME-UNI
(2) Dept. of Geography, Kings College, London, ROYAUME-UNI

Abstract

This paper uses information from the River Habitat Survey (RHS) database to explore the influence of rock type on reach-scale sedimentological and vegetation characteristics. A range of reach-scale indices are derived from the RHS database for analysis, supported by landscape variables which provide detail on the catchment context. River reaches were then classified into broad lithological groups which reveal statistically significant differences along 2 key gradients in environmental conditions : an energy gradient associated with stream power and sediment calibre which is inversely related to in-channel vegetation roughness, and a riparian vegetation gradient that also reflects the inverse relationship between instream and riparian vegetation cover. The results emphasise the differences in reach-scale geomorphological and ecological structure between groundwater-fed and surface water-fed catchments, supporting the inclusion of underlying reach lithology in the development of river typologies

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2008, vol. 76, no1 [pp. 78-88]

Bibliographic references : 1 p.

Collation : 7 fig., 7 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2008.09.010

Prodig - Bibliographie Géographique Internationale (BGI)
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