Ecosystem expansion and contraction dynamics along a large Alpine alluvial corridor (Tagliamento River, Northeast Italy)

Multi-scale characterization and evolution of channel forms in gravel-bed rivers

Auteurs :
DOERING, M.
UEHLINGER, U.
ROTACH, A.
SCHLAEPFER, D.R.
TOCKNER, K.
RINALDI, M.

Description :
The AA. quantify large-scale expansion and contraction dynamics of surface waters along a braided section of the last remaining semi-natural large Alpine gravel-bed river (Tagliamento River). To assess surface-subsurface exchange patterns they measured discharge and vertical hydraulic gradients at multiple locations along the corridor. The results emphasize that even small changes in flow can cause major increases or decreases of ecosystem size, thereby creating a highly dynamic and harsh environment for both terrestrial and aquatic organisms.


Type de document :
Congrès

Source :
Gravel-Bed Rivers Conference, 6, St. Jakob, Autriche, 2005-09, Earth surface processes and landforms, issn : 0197-9337, 2007, vol. 32, n°. 11, p. 1693-1704, nombre de pages : 12, Collation : Illustration, Références bibliographiques : 53 ref.

Date :
2007

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley