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(Article of periodic en Anglais - 2012)

Document title

Geomorphological effects of beaver activities in lowland drainage ditches

Authors(s) and Affiliation(s)

LAMSODIS R. (1) ; ULEVIČIUS A. (2) ;
(1) Water Research Inst. of Aleksandras Stulginskis Univ., Kėdainiai, LITUANIE
(2) Fac. of Natural Sciences, Univ., Vilnius, LITUANIE

Abstract

The aims of this study were to quantify geomorphic alterations caused by beavers inhabiting ditches in an anthropogenically transformed landscape of the Middle Lithuanian Lowland, in the Nevėžis basin, and to predict the shifts in the magnitude of alterations as the beaver population fluctuates. Two methods, aerial photographs and global positioning system, were used to map all ditches in selected sites and all available beaver-created visible structures therein. On the drainage ditch network scale, the quantitative geomorphic effect of beaver activities resulting from construction of dams, burrowing into the ditch slopes, and digging of lateral canals, as well as the development of scours was estimated. On the catchment scale of the whole hydrographical network, an increase in either the length of dammed drainage ditches, or the density of beaver-sites, resulted in the potential growth of the total geomorphic effect

Source

Article of periodic

published at : Zeitschrift für Geomorphologie / ISSN 0372-8854 / CODEN ZGMPAG

Editor : Gebruder Borntraeger, Stuttgart - ALLEMAGNE (1925)

Millesime : 2012, vol. 56, no4 [pp. 425-458]

Bibliographic references : 34 ref.

Collation : 8 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 8829

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1127/0372-8854/2012/0087

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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