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Schmidt, G. W. (1985). Zur Fischfauna der Naturschutzseen Grosses Heiliges Meer und Erdfallsee in Hopsten, Nordrhein-Westfalen (Vol. 60).
Schlüsselwörter: Fisch, Vorkommen, Arteninventar
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Gerstmeier, R. (1985). Nahrungsökologische Untersuchungen an Fischen im Nationalpark Berchtesgarden (Vol. 72).
Schlüsselwörter: Fisch, Nahrung, Felchen, Maräne, Coregonus lavaretus, Flussbarsch, Flussbarsch, Perca fluviatilis, Seesaibling, Salvelinus fontinalis, Hecht, Esox lucius, Quappe, Trüsche, Lota lota, Fisch
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Sluczanowski, P. (1985). The Beverton and Holt yield per recruit model using Lotus 1-2-3 (Vol. 13).
Schlüsselwörter: Fischerei, modell, wachstum, population, statistik, listing, statistik
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Akamine, T. (1985). Consideration of the BASIC programs to analyse the polymodal frequency distribution into normal distributions.
Zusammenfassung: BASIC programs to analyse the polymodal frequency distribution into normal distributions were studied and a Maximum-Likelihood program was compared with a Least-Squares program and its variations. The Maximum-Likehood method is the most suitable procedure for the problem. The X super(2) minimum method is more suitable than the Least-Squares method for normal data, but the latter is more suitable than the former for abnormal data which have a few separate parts at the end of a distribution. These methods are easy to apply for a good estimation. Parameters are stable where an obvious minimal value is recognized between neighboring distributions, but the confidence intervals of the parameters are larger than for the parts where it is not recognized.
Schlüsselwörter: LÄngenfrequenz, methode, fischerei, basic, listing, statistik, mathematik, normalverteilung, modell, algorithmus
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Schiemer, F. (1985). Die Bedeutung von Auegewässern als Schutzzone für die Fischfauna (Vol. 37).
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Arnold, A. (1985). Pseudorasbora parva (SCHLEGEL 1842) nun auch in der DDR (Vol. 32).
Schlüsselwörter: Fisch, Pseudorasbora parva, Vorkommen, Verbreitung
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