SEARCH

SEARCH BY CITATION

References

  • Ensmenger. R. (1987) Die Aeschen (Thymallus thymallus, Pisces) der Oberen Reuss von Luzern. Laichverhalten und geschlechtsspezifische Wachstumsstrategien. Unpublished diploma thesis, University of Z¨urich.
  • Guthruf, J. (1996) Populationsdynamik und Habitatwahl der ¨Asche (Thymallus thymallus L.) in drie verschiedenen Gew¨assern des schweizerischen Mittellandes. PhD thesis ETH No. 11720,Swiss Federal Institute of Technology, Zurich.
  • Haugen, T.O. & Rygg, T.A. (1996) Intra- and interspecific life history differences in sympatric grayling and brown trout in a Norwegian reservoir. Journal of Fish Biology, 48, 964978.
  • Hellawell, J.M. (1969) Age determination and growth of the grayling Thymallus thymallus (L.) of the River Lugg. Herefordshire. Journal of Fish Biology, 1, 373382.
  • Lehmann, E.L. (1975) Nonparametrics: Statistical Methods Based on Ranks. Holden-Day/McGraw-Hill, New York .
  • Mills, C.A. & Mann, R.H.K. (1985) Environmentally-induced fluctuations in year-class strength and their implications for management. Journal of Fish Biology, 27(Suppl. A), 209226.
  • Northcote, T.G. (1995) Comparative biology and management of Arctic and European Grayling (Salmonidae, Thymallus). Reviews in Fish Biology and Fisheries, 5, 141194.
  • Persson, L. & Johansson, L. (1992) On competition and temporal variation in temperate freshwater fish populations. Netherlands Journal of Zoology, 42, 304322.
  • Pitcher, T.J. & Hart, P.J. (1982) Fisheries Ecology. Chapman & Hall, London .
  • Reymond, A. & Zuchuat, O. (1995) Perch fidelity of cormorants Phalacrocorax carbo outside the breeding season. Ardea, 83, 281284.
  • Staub, E., Egloff, K., Kr¨amer, A. & Walter, J. (1998) The effect of predation by wintering cormorants Phalacrocorax carbo on grayling Thymallus thymallus and trout (Salmonidae) populations: two case studies from Swiss rivers. Comment. Journal of Applied Ecology, 35, 608610.
  • Staub, E., Kr¨amer, A., M¨uller, R., Ruhl¨e, Ch. & Walter, J. (1992) Einfluss des Kormorans (Phalacrocorax carbo) auf Fischbest¨ande und Fangertr¨age in der Schweiz. Schriftenreihe Fischerei, 50, 1138.
  • Suter, W. (1995) The effect of predation by wintering cormorants Phalacrocorax carbo on grayling Thymallus thymallus and trout (Salmonidae) populations: two case studies from Swiss rivers. Journal of Applied Ecology, 32, 2946.
  • Witkowski, A. & Kowalewski, M. (1988) Migration and structure of spawning population of European grayling Thymallus thymallus (L.) in the Dunajec basin. Archiv f¨ur Hydrobiologie, 112, 279297.
  • Woolland, J.V. & Jones, J.W. (1975) Studies on grayling, Thymallus thymallus L., in Llyn Tegid and the upper River Dee, North Wales. I. Age and growth. Journal of Fish Biology, 7, 749773.
  • Wootton, R.J. (1990) Ecology of Teleost Fishes. Chapman and Hall, London .