Article (Scientific journals)
Field protocol for assessing small obstacles to migration of brown trout Salmo trutta, and European grayling Thymallus thymallus: a contribution to the management of free movement in rivers
Ovidio, Michaël; Capra, Hervé; Philippart, Jean-Claude
2007In Fisheries Management and Ecology, 14 (1), p. 41-50
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Keywords :
fragmentation; jumping; migration; obstacles; telemetry
Abstract :
[en] Between 1996 and 2004, adult brown trout, Salmo trutta L. (n = 40) and European grayling, Thymallus thymallus (L.) (n = 39) were radio-tracked in three southern Belgium rivers to assess their capabilities to bypass various obstacles. During their upstream migrations individuals encountered different types of physical obstacles and successfully passed some under variable environmental conditions. The obstacles cleared by the fish were characterised based on a simple topographical description protocol and compared with tracking data. The ability of trout and grayling to pass different typologies of physical obstacles in natural river systems is discussed in the context of enabling their free movement in rivers.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Ovidio, Michaël  ;  Université de Liège - ULiège > Biologie du comportement - Ethologie et psychologie animale
Capra, Hervé
Philippart, Jean-Claude ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Language :
English
Title :
Field protocol for assessing small obstacles to migration of brown trout Salmo trutta, and European grayling Thymallus thymallus: a contribution to the management of free movement in rivers
Publication date :
February 2007
Journal title :
Fisheries Management and Ecology
ISSN :
0969-997X
eISSN :
1365-2400
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
14
Issue :
1
Pages :
41-50
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 February 2009

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