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(Article of periodic en Anglais - 2011)

Document title

Using a historical aerial photograph analysis to inform trout habitat restoration efforts

Authors(s) and Affiliation(s)

BAILLIE M.B. (1) ; SALANT N.L. (1) ; SCHMIDT J.C. (1) ;
(1) Intermountain Center for River Rehabilitation and Restoration, Dep. of Watershed Sciences, Utah State Univ., Logan, ETATS-UNIS

Abstract

Restoration of the upper Strawberry River included bank stabilization techniques because it was assumed that excessive bank erosion was degrading spawning habitat for Bonneville cutthroat trout (BCT). Using a long-term aerial photograph record, the historical range of variability in bank erosion rates and channel geometry was determined. Although a historical loss of riparian vegetation coincided with a shift to a wider and more sinuous channel, lateral migration rates declined and the channel narrowed as riparian cover increased in the decades before restoration, indicating a process of natural recovery. Furthermore, it was found that the percentage of fine sediment in the streambed before restoration was insufficient to affect BCT spawning success. The results highlight how a historical analysis can be used to identify the sources of habitat degradation and inform the selection of restoration goals and strategies

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, no12 [pp. 1693-1702]

Bibliographic references : 40 ref.

Collation : 6 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2196

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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