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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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Chen, Y., Jackson, D. A., & Harvey, H. H. (1992). A comparison of von Bertalanffy and polynomial functions in modelling fish growth data (Vol. 49).
Zusammenfassung: We compared the von Bertalanffy growth function (VBGF) and five polynormial functions (PF) in modelling fish growth for 16 populations comprising six species of freshwater fishes. Ranked results of the variance explained by each growth function indicated that VBGF described growth data better than three- and four-parameter polynomial functions. Log-transforming length and age greatly improved the goodness-of-fit of the three-parameter polynomial function. Statistical comparison of growth between populations or sexes was done using a general linear model for polynomial functions. The VBGF proved to be the best growth model for all 16 populations.
Schlüsselwörter: Fischerei, wachstum, methode, theorie, modell, statistik
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Soriano, M., Moreau, J., Hoenig, J. M., & Pauly, D. (1992). New functions for the analysis of two-phase growth of juvenile and adult fishes, with application to Nile perch (Vol. 121).
Zusammenfassung: Two phases of growth can sometimes be distinguished in long-lived fish species. The first involves the growth of zooplankton-feeding juveniles and young adults. The second consists of accelerated growth of large, piscivorous adults. We present modified versions of the von Bertalanffy growth equation that account for this feature and fit them to length-at-age data on Nile perch Lates niloticus (Centropomidae) from Lake Chad (north and south) in north-central Africa, and from Lake Nasser in Egypt. The growth parameters estimated for the new equations allow one to make preliminary estimates of the energy gains by Nile perch associated with transition from zooplanktivory to piscivory.
Schlüsselwörter: Fischerei, wachstum, theorie, modell
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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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Pohl, M. (1992). Durchleuchtet: WMF und BMP.
Schlüsselwörter: Grafik, formate, Grundlage
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Fischer, C. (1992). Eine Datenbank für Computerviren.
Schlüsselwörter: Grundlagen, security, viren
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Fühner, C. (1992). Wurzelbehandlung – Funktionskompiler im Eigenbau.
Schlüsselwörter: Mathematik, turbo-pascal, listing, tool
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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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Scholz, A. (1992). Die Großmuscheln (Unionidae) im Regierungsbezirk Detmold – Verbreitung, Biologie und Ökologie der ostwestfälischen Najaden (Vol. 9).
Schlüsselwörter: Muschel, Vorkommen, Unionidae
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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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