Reference : Impact assessment and remediation of anthropogenic interventions on fish populations ...
Reports : Expert report
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/62167
Impact assessment and remediation of anthropogenic interventions on fish populations - (FISHGUARD)
English
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 mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Démographie des poissons et hydroécologie >]
Philippart, Jean-Claude mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
Raeymakers, Joost [ > > ]
Van Houdt, Jeroen [ > > ]
Volckaert, Philippe [ > > ]
Jan-2006
Belgian Science Policy
100
Bruxelles
Belgique
[en] Fish ; Barriers ; Genetic ; Fish-pass ; fragmentation ; Ecology ; River
[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.
Belgian Science Policy
Global change, Ecosystems and Biodiversity
Belgian Science Policy
Researchers ; Students
http://hdl.handle.net/2268/62167

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