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Kleisinger, H. (1992). Genetische Variation der Bachforelle (Salmo trutta forma fario) aus besetzten und unbesetzten Gewässern in Eifel und Hunsrück. Mainz: Universität.
Schlüsselwörter: Fisch, Genetik
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Kuhn, M., & Kirchhofer, A. (1992). Habitatsbestimmende Faktoren beim Neunauge (Lampetra planeri) in vier Gewässern des Kantons Bern (Vol. 9).
Schlüsselwörter: Neunauge, Bachneunauge, Lampetra planeri, Habitat
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Rose, G. A. (1992). Indices of Total Stock Biomass in the “Nothern” and Gulf of St. Lawrence Atlantic Cod (Gadus morhua) Stocks Derived from Time Series Analyses of Fixed Gear (Trap) Catches (Vol. 49).
Schlüsselwörter: Fischerei, zeitreihe, statistik, population
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Becker, M. (1992). Ingestions- und Selektionsverhalten adulter Felchen (Coregonus lavaretus) des Bodensees: saisonale und diurnale Variabilität. Konstanz: Universität.
Schlüsselwörter: Fisch, Felchen, Coregonus lavaretus, Nahrung, Verhalten, Saisonal, Diurnal, Bodensee
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Hartmann, J. (1992). Kannibale Bodenseebarsch (Vol. 45).
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Kuhn, M. (1992). Lebensraumansprüche des Bachneunauges Lampetra planeri (BLOCH 1784). Eine vergleichende Habitatanalyse. Bern: Universität.
Schlüsselwörter: Neunauge, Bachneunauge, Lampetra planeri
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Mulligan, T. J., & Leaman, B. M. (1992). Length-at-Age Analysis: Can you Get What You See? (Vol. 49).
Schlüsselwörter: Fisch, lÄngenfrequenz, statistik, methode, wachstum
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Akamine, T., & Matsumiya, Y. (1992). Mathematical analysis of age-length key method for estimating age composition from length composition.
Zusammenfassung: In mathematics, the age-length key method is an estimating method for the ratio of each distribution in a mixture of distributions. Although the maximum likelihood method is the principle of this estimation, this model is a nonlinear model with a restrictive condition. At first, Hasselblad solved this model by using a new iteration method with a computer. Although his method was regarded as the steepest descent method or EM algorithm, it is proved to be an application of Lagrange's indeterminate multiplier method to the iteration method. Nowadays, there are other useful algorithms of optimization, especially Marquardt's method, for this estimation.
Schlüsselwörter: Fisch, statistik, normalverteilung, lÄngenfrequenz, theorie, methode
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Arnason, A. N., Papst, M. H., & Hopky, G. E. (1992). Modelling the Increase in Variance of Fish Weight (Vol. 49).
Schlüsselwörter: Fischerei, statistik, wachstum, modell
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Köhler, C. (1992). Morphologische Untersuchungen zur intraspezifischen Variabilität des Rotauges, Rutilus rutilus (L.), aus dem Rhein (Vol. 6).
Schlüsselwörter: morphologisch, Fisch, Varabilität, Rotauge, Rutilus rutilus, Rhein
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