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River research and applications v.34 no.6, 2018년, pp.548 - 554   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

River connectivity reestablished: Effects and implications of six weir removals on brown trout smolt migration

Birnie‐Gauvin, K. (DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Silkeborg, Denmark ) ; Candee, M.M. (DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Silkeborg, Denmark ) ; Baktoft, H. (DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Silkeborg, Denmark ) ; Larsen, M.H. (DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Silkeborg, Denmark ) ; Koed, A. (DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Silkeborg, Denmark ) ; Aarestrup, K. (DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater F ) ;
  • 초록  

    Abstract Today's river systems have been extensively modified, requiring us to rethink how we approach the management of these important ecosystems. We evaluated the effects of removing 6 weirs in River Villestrup (Jutland, Denmark) on the smolt run of brown trout ( Salmo trutta ) over the course of 12 years. During 5 of these years, we evaluated the number, size, and timing of smolts during their downstream migration. We found an increase in smolt output following the weir removals, along with a decrease in average length and indications of an earlier peak migration. Our results suggest that barrier removal has led to an increase in spawning success by adults, fry survival, recruitment, and smolt migration success. Weir removal is therefore a viable management approach to restore connectivity in freshwater streams and rivers, which promotes the passage of smolts as they migrate to marine environments.


  • 주제어

    barriers .   freshwater ecosystems .   migration .   removal .   river restoration .   Salmo trutta .   smolt.  

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