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Petz-Glechner, R., Patzner, R. A., & Riehl, R. (1998). Die Eier heimischer Fische: 12. Hasel – Leuciscus leuciscus (L. 1758) und Strömer – Leuciscus souffia agassizi (Valenciennes, 1844) (Cyprinidae) (Vol. 51).
Schlüsselwörter: Ei, Ontogenie, Beschreibung, Fisch, Hasel, Leuciscus leuciscus, Strömer, Leuciscus souffia agassizi, Fortpflanzung
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Schoblick, R. (1996). Installation ISDN-Anschluß, Selbsthilfe spart Geld (Vol. 6).
Schlüsselwörter: Hardware, ISDN
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Crawford, T. J. (1984). What is a population? (B. Shorrocks, Ed.). Oxford: Blackwell Scientific Publications.
Schlüsselwörter: Population, Theorie, Genetik, Grundlagen
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Nunney, L. (1991). The influence of age structure and fecundity on effective population size (Vol. 1991).
Schlüsselwörter: Population, Biologie, Theorie, Poisson
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Husband, B. C., & Barrett, S. C. H. (1995). Estimating effective Population Size: A Reply to Nunney (Vol. 49).
Schlüsselwörter: Population, Biologie, Theorie, Methode
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Hightower, J. E., & Gilbert, R. J. (1984). Using Jolly-Seber Model to Estimate Population Size, Mortality and Recruitment for a Reservoir Fish Population (Vol. 113).
Schlüsselwörter: Fisch, mark-recapt, Jolly-Seber, Mortalität, Population
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Elliott, J. M., & Hurley, M. A. (1995). The functional relationship between body size and growth rate in fish (Vol. 9).
Schlüsselwörter: Fisch, Wachstum, Modell, Statistik
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Chan, C. - L., Hoenig, J. M., Dawe, E. G., Brownie, C., & Pollock, K. H. (1995). An Efficient Design for Index-Removal and Change-in-Ratio Estimation of Population Size and Related Parameters. ICES C.M.
Schlüsselwörter: Fisch, mark-recapt, Methode, Statistik, Zippin, Mathematik
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Hoenig, J. M., Morgan, M. J., & Brown, C. A. (1995). Analysing differences between two age determination methods by tests of symmetry (Vol. 52).
Zusammenfassung: A common problem in fisheries science is the comparison of two methods for obtaining ages of individual animals. The authors suggest that if the overall level of agreement is low between two ageing methods used on the same sample of fish, then one can use a test of symmetry to look for evidence of systematic disagreement. A chi super(2) test is used to determine if the number of fish assigned age i from method 1 and age j from method 2 differs significantly from the number of fish assigned age j from method 1 and age i from method 2. Such a test can also be used to determine the range of nominal ages over which two methods appear to give comparable results.
Schlüsselwörter: Altersbestimmung, Fischerei, Statistik, Methode
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Arnason, A. N., & Mills, K. H. (1987). Detection of handling mortality and its effects on Jolly-Seber estimates for mark-recapture experiments (Vol. 44).
Zusammenfassung: Handling mortality occurs in mark-recapture experiments if animals handled and released in a given sample have a higher mortality rate than animals that were alive but not sampled. This violates the assumption of equal survival required for forming the Jolly-Seber estimates of population abundance, survival, and recruitment. The authors show that handling mortality can produce very large biases in these estimates, and we develop a test to detect it. They investigate the power of this test and find that quite large biases can be produced at handling mortality rates that are too low to be detected. They also recommend methods to prevent handling mortality from occurring in fish sampling experiments and methods to reduce bias in the estimates. The test and the bias corrections are applied to mark-recapture data for a lake whitefish (Coregonus clupeaformis ) population and to data from simulated mark-recapture experiment.
Schlüsselwörter: Fischerei, Statistik, Mathematik, Modell, Mortalität, Jolly-Seber
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