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Ricker, W. E. (1992). Back-Calculation of Fish Lengths Based on Proportionality between Scale and Length Increments (Vol. 49).
Schlüsselwörter: Fischerei, statistik, methode, wachstum
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Richards, L. J., Schnute, J. T., Kronlund, A. R., & Beamish, R. J. (1801). Statistical Models for the Analysis of Ageing Error (Vol. 49).
Schlüsselwörter: Fischerei, population, alter, lÄngenfrequenz, statistik, methode, mathematik
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Richards, L. J., & Schnute, J. T. (1992). Statistical Models for Estimating CPUE from Catch and Effort Data (Vol. 49).
Schlüsselwörter: Fischerei, cpue, methode, statistik, modell
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Nemec, A. F. L., & Brinkhurst, R. O. (1988). Using the Bootstrap to Assess Statistical Significance in the Cluster Analysis of Species Abundance Data (Vol. 45).
Schlüsselwörter: Fischerei, statistik, cluster, methode, modell
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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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Misra, R. K., & Uthe, J. F. (1987). Methods of Time Trends Analysis Applied to Contaminant Levels in Canadian Atlantic Cod (Gadus morhua) (Vol. 44).
Schlüsselwörter: Trend, anova, methode, fischerei, umweltverschmutzung
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Misra, R. K. (1980). Statistical Comparisons of Several Growth Curves of the von Bertalanffy Type (Vol. 37).
Schlüsselwörter: Wachstum, theorie, vergleich, mathematik, statistik, modell
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McGarvey, R. (1994). An age-structured open-access fishery model (Vol. 51).
Zusammenfassung: A dynamic model for open-access fisheries is presented. In addition to density dependence in recruitment and fishing effort changing in proportion to the level of profit fishermen earn which characterizes previous open-access models, it incorporates full age structure for the fish stock, lognormal environmental recruitment variability, and gear selectivity. The predator-prey cycling solution of the original Schaefer dynamic model, and subsequent open-access models, persists for these model extensions. Density dependence in recruitment induces greater global stability. Environmental recruitment variability, common in marine populations, is destabilizing in the neighborhood of the open-access equilibrium. Approximating model steady states of effort and catch by the corresponding averages from data time series underlies a new algorithm of parameter evaluation, applied here to an open-access model of the Georges Bank sea scallop (Placopecten magellanicus) fishery.
Schlüsselwörter: modell, statistik, population, dynamik, algorithmus
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Labelle, M. (1994). A likelihood method for estimating Pacific salmon escapement based on fence counts and mark-recapture data (Vol. 51).
Zusammenfassung: Pacific salmon (Oncorhynchus spp.) escapements in natural streams are often determined by conducting fence counts in conjunction with mark-recapture operations. Typical field conditions are characterized by protracted floods, undetected immigration, variation in sampling rates, mortality during the census periods, small sample sizes, and few successive recaptures. Closed population models tend to overestimate escapement under such conditions, and traditional open population models cannot always be relied on due to the lack of sufficient data. A likelihood-based estimation method was specifically designed for such conditions. A distinguishing feature of this model is that individual recapture histories are not required for parameter estimation. The model is also structured to incorporate ancillary data in the estimation process to improve the precision and accuracy of the estimates. The model is described in detail, and suggestions are made to facilitate its application.
Schlüsselwörter: capt-recapt, methode, ML, modell, statistik, simulation
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Koslow, J. A. (1992). Fecundity and the Stock-Recruitment Relationship (Vol. 49).
Schlüsselwörter: Fischerei, population, modell, statistik, sr
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