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Adamicka, P., Bretschko, E., Danecker, E., Hinteregger, J., Imhof, G., Jungwirth, M., et al. (1992). Zur Gewährleistung, Beeinträchtigung und Beurteilung der ökologischen Funktionsfähigkeit von Gewässern (Vol. 45).
Schlüsselwörter: Fisch, Umwelt
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Eckmann, R., Gaedke, U., & Wetzlar, H. J. (1988). Effects of Climatic and Density-Dependent Factors on Year-Class Strength of Coregonus lavaretus in Lake Constance (Vol. 45).
Zusammenfassung: The influences of density-dependent and density-independent factors on year-class strength (YCS) of Corogonus lavaretus in Lake Constance were studied by multiple linear regression analyses for the period from 1962 to 1982. Meteorological conditions that lead to early thermal stratification of the lake in April are of prime importance for YCS and account for 41% of the total YCS variance. Zooplankton concentration during spring has no significant influence on YCS. The extensive stocking program on the lake (50-200 million larvae stocked per year) significantly supports YCS, but this relationship becomes apparent only after the influence of meteorological conditions are removed from the data.
Schlüsselwörter: Fischerei, zeitreihe, modell, statistik
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Caputi, N. (1988). Factors affecting the time series bias in stock-recruitment relationships and the interaction between time series and measurement error bias (Vol. 45).
Zusammenfassung: The stock-recruitment relationship (SRR) and the recruitment to spawning stock relationship (RSR) of the tiger prawn (Penaeus esculentus ) in Exmouth Gulf, Western Australia, were used to examine the time series bias and measurement error bias by Monte Carlo simulations. Simulating the effect of measurement error as well as the random variation about the SRR and RSR helps to determine the possible combinations of measurement error and random variation which may result in the observed variation about the SRR and RSR. The simulations also indicate that there is an interaction between measurement error and random variation about the SRR/RSR on the bias of the parameters of the SRR.
Schlüsselwörter: Fischerei, statistik, zeitreihe, methode, modell, theorie
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Ahnelt, H., & Patzner, R. (1992). Über ein Vorkommen des Neunstachligen Stichlings (Pungitius pungitius, Teleostei: Gsterosteidae) in Österreich (Vol. 45).
Schlüsselwörter: Fisch, Neunstachliger Stichling, Pungitius pungitius, Vorkommen, Neozoon, Österreich
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Bacalbasa-Dobrovici, N. (1982). Anthropogene Einwirkungen auf Fischbestände (Vol. 44).
Schlüsselwörter: Fisch, Umwelt, Umweltverschmutzung
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Hofer, R., & Bucher, F. (1991). Zur Biologie und Gefährdung der Koppe (Vol. 44).
Schlüsselwörter: Groppe, Cottus gobio, Fisch, Biologie, Gefährdung
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Münzing, J. (1959). Biologie, Variabilität und Genetik von Gasterosteus aculeatus L., Untersuchungen im Elbegebiet (Vol. 44).
Schlüsselwörter: Fisch, Dreistachliger Stichling, Alter, Wachstum, Nahrung, Wanderung, Morphologie, Verbeitung, Genetik
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Schnute, J. (1987). A General Fishery Model for a Size-Struktured Fish Population (Vol. 44).
Schlüsselwörter: LÄngenfrequenz, population, methode, theorie, mathematik, statistik, fisch
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Wood, C. C., McKinnell, S., Mulligan, T. J., & Fournier, D. A. (1987). Stock Identification with the Maximum-Likelihood Mixture Model: Sensitivity Analysis and Application to Complex Problems (Vol. 44).
Schlüsselwörter: Simulation, fischerei, methode, mathematik, statistik, modell, theorie, fisch
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Green, P. E. J., & Macdonald, P. D. M. (1987). Analysis of Mark-Recapture Data from Hatchery-Raised Salmon Using Log-Linear Models (Vol. 44).
Schlüsselwörter: Capt-recapt, fischerei, methode, statistik, modell
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