Migrations, home range and seasonal habitat use of adult Barbel in the Border Meuse (Poster) ; Migration, domaine vital et utilisation saisonnière de l'habitat chez le barbeau adulte dans la Meuse mitoyenne

Fourteen adult (F.L. 47,5 -57,0 cm) barbel (Barbus barbus) were radio tagged (40 MHz) in the Border Meuse (Borgharen- Maaseik): 5 in May 2001, 3 in October 2001 and 6 in April 2002. From May 2001 till September 2002 fishes were localised weekly throughout the year and daily in April and May in order to localise spawning grounds and investigate seasonal migrations and habitat use. In winter with flows ranging from 250 to 2.500 m3/s four barbel present at the time were found in the main river bed at all times. Large structures such as boulders and trees were used as shelter. No migrations to dif... Mehr ...