Event Title

Session A6: Chub (Squalius cephalus) and Catfish (Silurus glanis) Migration at a Barrier in the River Demer (Belgium)

Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

23-6-2015 5:15 PM

End Date

23-6-2015 5:40 PM

Description

Abstract:

Longitudinal and lateral connectivity of rivers is necessary for fish to successfully fulfill their life cycle. Three hydraulic constructions prevent fish migrating from the sea to the upstream part of the river Demer. In support of the plan to enhance fish migration along the third barrier, upstream migration of chub and catfish was studied during the spring and summer of 2014 using acoustic telemetry (Vemco technology: V13 transmitters, VR2W data loggers). Beside the barrier, the potential of a small tributary as a natural bypass was studied. Only large chub and catfish succeeded in migrating upstream along the barrier after many trials, indicating a very small chance for fish to pass this barrier. Although the attractiveness of the tributary was smaller, it was more efficient than the barrier, suggesting its potential as a natural bypass channel to upstream spawning habitat in the river Demer. Research on the relation with discharge might further support the local water managers in enhancing the attractiveness of the tributary and its potential as a natural bypass for upstream migration.

Comments

Presenting Author Bio: Since Marche 2014, Ine is freshwater fish biologist at the Research Institute for Nature and Forest in Brussels (Belgium). From 2010 to 2014 she studied Northern pike migration and the spatio-temporal modelling of pike populations during her PhD at the faculty of Bioscience Engineering of the Ghent University. Ine has experience in evaluating fish migration using radio- and acoustic telemetry.

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Jun 23rd, 5:15 PM Jun 23rd, 5:40 PM

Session A6: Chub (Squalius cephalus) and Catfish (Silurus glanis) Migration at a Barrier in the River Demer (Belgium)

Groningen, The Netherlands

Abstract:

Longitudinal and lateral connectivity of rivers is necessary for fish to successfully fulfill their life cycle. Three hydraulic constructions prevent fish migrating from the sea to the upstream part of the river Demer. In support of the plan to enhance fish migration along the third barrier, upstream migration of chub and catfish was studied during the spring and summer of 2014 using acoustic telemetry (Vemco technology: V13 transmitters, VR2W data loggers). Beside the barrier, the potential of a small tributary as a natural bypass was studied. Only large chub and catfish succeeded in migrating upstream along the barrier after many trials, indicating a very small chance for fish to pass this barrier. Although the attractiveness of the tributary was smaller, it was more efficient than the barrier, suggesting its potential as a natural bypass channel to upstream spawning habitat in the river Demer. Research on the relation with discharge might further support the local water managers in enhancing the attractiveness of the tributary and its potential as a natural bypass for upstream migration.

https://scholarworks.umass.edu/fishpassage_conference/2015/June23/51