Movements and habitat preferences of adult grayling (Thymallus thymallus L.) from late winter to summer in a boreal river
Nykänen, Mari; Huusko, Ari; Lahti, Markku
published: Nov 19, 2004
ArtNo. ESP141016173008, Price: 29.00 €
Radiotelemetry and hydraulic modelling were used to examine changes in the movement patterns and daytime habitat preferences of adult European grayling Thymallus thymallus L. (n= 12) between late winter and summer (12 April 2 July 2001, water temperature 0 19 °C). In the River Kuusinkijoki, Finland, grayling mostly remained within short ( 60 cm, water velocities 40 70 cm s1, and substrata dominated by particle sizes 0.07128 mm. During summer, selection was for areas with depths 140 300 cm, velocities 40 100 cm s1, and particle sizes 16 256 mm.