Expert report (Reports)
Impact assessment and remediation of anthropogenic interventions on fish populations - (FISHGUARD)
DeBoeck, Gudrun; Blust, Ronny; Todorache, Christian et al.
2006
 

Files


Full Text
Fishguard.pdf
Publisher postprint (2.43 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Fish; Barriers; Genetic; Fish-pass; fragmentation; Ecology; River
Abstract :
[en] The disruption of longitudinal river connectivity by man-made obstacles and the stocking of fish communities with non-indigenous species or genotypes threaten the fish fauna of Belgian rivers to various extents. Obstacles impede migrations between habitats that are vital for populations, and they may restrict the gene flow between populations, thereby reducing the effective size and genetic diversity of populations and increasing the risk of local extinction. Restocking programs often involve the introduction of non-indigenous genotypes in native populations. Moreover, although stocking programs lead to the temporal and superficial enrichment of local fish communities or gene pools, they generally result in a loss of biodiversity on a regional or international scale through the homogenisation of communities and the breakdown of genetic differentiation between populations. Thus, stocking programs cannot compensate for the loss of free migration by artificial obstructions. The impact of these changes on fish populations remains largely unknown, which complicates the priorisation of spots to preserve and spots to restore. Here, we present an integrated study on Belgian waters, both in Flanders and Wallonia, which analyses fish communities, gene flow and migration patterns in the field, as well as the swimming and leaping performances of fishes under controlled conditions.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
DeBoeck, Gudrun
Blust, Ronny
Todorache, Christian
Baret, Philippe
Cornille, Isabelle
Buysse, David
Coeck, Johan
Belpaire, Claude
Geeraerts, Caroline
Verbiest, Hilde
Mostaert, Frank
Viaene, Peter
Vereecken, Hans
Ovidio, Michaël  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Démographie des poissons et hydroécologie
Philippart, Jean-Claude ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Raeymakers, Joost
Van Houdt, Jeroen
Volckaert, Philippe
More authors (8 more) Less
Language :
English
Title :
Impact assessment and remediation of anthropogenic interventions on fish populations - (FISHGUARD)
Publication date :
January 2006
Publisher :
Belgian Science Policy, Bruxelles, Belgium
Number of pages :
100
Commissioned by :
Belgian Science Policy
Name of the research project :
Global change, Ecosystems and Biodiversity
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Available on ORBi :
since 14 June 2010

Statistics


Number of views
121 (17 by ULiège)
Number of downloads
622 (11 by ULiège)

Bibliography


Similar publications



Contact ORBi