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Hiramatsu, K., Akamine, T., & Kitada, S. (1995). Effectiveness of partial likelyhood of estimating fish mortality rates from tag recoveries and the stock composition in the mixed population based on genetic data.
Zusammenfassung: Because of the simplicity of calculation and the availability of evaluating the precision of the estimates, a partial likelihood approach has been used for estimating fish mortality rates from tag recoveries and the stock composition in the mixed population based on genetic data. We compare the partial likelihood estimator with the full likelihood estimator, and find that under some conditions, both estimators are the same. The above applications meet the conditions and hence the estimates using the partial likelihood are the same as the ones using the full likelihood. In this case, the partial likelihood approach is quite useful.
Schlüsselwörter: stock-assessment; tagging-; genomes-; fishing-mortality; mixing-ratio; mathematical-analysis
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Sparre, P. (1987). A method for the estimation of growth, mortality and gear selection/recruitment parameters from length-frequency samples weighted by catch per effort (D. Pauly, & G. R. Morgan, Eds.) (Vol. 13). MAZZARA-DEL-VALLO,-ITALY.
Zusammenfassung: This paper describes a method and a FORTRAN program for the estimation of von Bertalanffy growth parameters, total mortality rates and gear selection/recruitment parameters from a time series of length-frequency samples weighted by catch per effort (e.g., numbers caught per hour by length class each quarter of the year). The length frequencies are separated into normally distributed components each of which represents a cohort. This method is constructed to allow for continuous, seasonally variable recruitment all year-round and is intended to be used especially for tropical and other fish stocks displaying an appropriate recruitment pattern.
Schlüsselwörter: stock-assessment; recruitment-; size-distribution; length-; mathematical-models, marine-fisheries
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Walters, C. (1995). Estimation of historical stock sizes and recruitment anomalies from relative abundance time series (Vol. 52).
Zusammenfassung: Often only simple relative abundance time series and basic growth and (or) survival estimates are available for assessing impacts of fishing and environmental factors. Assessment then involves fitting production models to the series, while forcing the model with observed catch or effort series. A key uncertainty in this approach is how to deal with recruitment variations due to factors other than stock size. A dynamic programming algorithm can be used to compute maximum likelihood estimates of the recruitment anomaly sequence, given prior knowledge of growth parameters, the natural survival rate, and proportion of the variation in the relative abundance index that is due to abundance measurement errors.
Schlüsselwörter: stock-assessment; approximation-; anomalies-; recruitment-; abundance-; growth-; survival-; algorithms-; fishery-management; marine-fisheries
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Reichholf, J. H. (2001). Früheres Vorkommen des Steinbeißers (Cobitis taenia) im Inselgebiet des Egglfinger Innstausees in Niederbayern (Vol. 8).
Schlüsselwörter: Stillgewässer, Vorkommen, Habitat, Fisch, Steinbeißer, Cobitis taenia, Bayern
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Reichholf, J. H. (2001). Erdkröten (Bufo bufo), Rutten (Lota lota) und Änderungen in der Leitfähigkeit eines kleinen Baches im niederbayerischen Inntal (Vol. 8).
Schlüsselwörter: Stillgewässer, Fließgewässer, Bestandsentwicklung, Gewässerbelastung, Amphibien, Erdkröte, Bufo bufo, Fisch, Trüsche, Quappe, Lota lota, Bayern
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Gaschütz, G., Pauly, D., & David, N. (1980). A versatile BASIC program for fitting weight and seasonally oscillating length growth data.
Schlüsselwörter: Statistik, wachstum, methode, formeln, theorie, basic, listing
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(1989). The Univariate Procedure.
Schlüsselwörter: Statistik, theorie, methode
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Sarnov, K. (1994). Abstraktionsinstrumente – Statistiksysteme: von Shareware bis High-End.
Schlüsselwörter: Statistik, Software, Vergleich
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Manly, B. F. J. (1996). Are there Clumps in Body-Size Distributions? (Vol. 77).
Schlüsselwörter: Statistik, size-distribution, modell, mathematik, bootstrap
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Ebeling, A. (1991). Dominanz in der Mitte – Zur Allgegenwart der Statistik.
Schlüsselwörter: Statistik, methode, zusammenfassung
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