Browsing NINA Brage by Author "van Leeuwen, Casper"
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Habitat fragmentation has interactive effects on the population genetic diversity and individual behaviour of a freshwater salmonid fish
van Leeuwen, Casper; Dalen, Kristine; Museth, Jon; Junge, Claudia; Vøllestad, Leif Asbjørn (Journal article; Peer reviewed, 2017)Sufficient genetic diversity can aid populations to persist in dynamic and fragmented environments. Understanding which mechanisms regulate genetic diversity of riverine fish can therefore advance current conservation ... -
Mismatch between fishway operation and timing of fish movements: a risk for cascading effects in partial migration systems
van Leeuwen, Casper; Museth, Jon; Sandlund, Odd Terje; Qvenild, Tore; Vøllestad, Leif Asbjørn (Peer reviewed; Journal article, 2016)Habitat fragmentation is a growing problem worldwide. Particularly in river systems, numerous dams and weirs hamper the movement of a wide variety of species. With the aim to preserve connectivity for fish, many barriers ... -
Small larvae in large rivers: observations on downstream movement of European grayling Thymallus thymallus during early life stages
van Leeuwen, Casper; Dokk, Torkil; Haugen, Thrond Oddvar; Kiffney, P.M.; Museth, Jon (Journal article; Peer reviewed, 2017)Behaviour of early life stages of the salmonid European grayling Thymallus thymallus was investigated by assessing the timing of larval downstream movement from spawning areas, the depth at which larvae moved and the ...