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Autor Cadigan, N. G.; Shelton, P. A. isbn 
  Titel SAS programs for fitting a seal population dynamics model Typ Journal Article
  Jahr 1993 Publikation Kurztitel der Zeitschrift  
  Band Ausgabe Seiten 37  
  Schlüsselwörter SAS, population, saison, mortalität, modell  
  Zusammenfassung (down) This technical report presents a description of two SAS programs (MAKED.SAS and SEAL.SAS) that fit a population dynamics model to seal (Phocidae) data. The programs have been constructed in such a manner that special knowledge of SAS is not required to run them. The population dynamics model is transformed to a standard nonlinear regression model and parameters are estimated using SAS's PROC NLIN. Output from the programs includes estimates of intrinsic mortality, pup numbers over time and total population numbers over time. The code for the programs is presented along with two examples.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Department of Fisheries and Oceans, St. John's, Nfld. (Canada). Science Branch Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN 1927 ISBN 1927 Medium  
  Bereich Expedition Konferenz  
  Notizen Geprüft nein  
  Rufnummer 476 Signatur 2277  
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Autor Millar, R. B. isbn 
  Titel A versatile computer program for mixed stock fishery composition estimation Typ
  Jahr 1990 Publikation Kurztitel der Zeitschrift  
  Band Ausgabe Seiten 32  
  Schlüsselwörter check-lists; approximation-; computer-programmes; stock-assessment  
  Zusammenfassung (down) This technical report describes a FORTRAN program (HISEA.FOR) to be used in the study of mixed stock fishery composition estimation. Program HISEA is a versatile research tool capable of performing analyses. The simplest use of HISEA is to perform a composition analysis. The program can then be run in bootstrap mode to provide a non-parametric estimate of the reliability of the estimated compositions. In simulation mode, HISEA can quantify the effect of changing sample sizes; of adding or removing variables; and of adding or removing stocks. Simulation also identifies potential problems (such as high bias and variance in the composition estimators) that may arise due to different stocks being too alike.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Department of Fisheries and Oceans, St. John's, Nfld. (Canada) Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN 1753 ISBN 1753 Medium  
  Bereich Expedition Konferenz  
  Notizen Leer Geprüft  
  Rufnummer Signatur 1112  
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Autor Clay, D.   
  Titel TUNE: A series of fish stock assessment computer programs written in FORTRAN for microcomputers (MS DOS) Typ Zeitschrift, Artikel
  Jahr 1990 Publikation Collect. Vol. Sci. Pap. Iccat Recl. Doc. Sci. Cicta Colecc. Doc. Cient. Cicaa Kurztitel der Zeitschrift  
  Band 32 Ausgabe 2 Seiten 443-460  
  Schlüsselwörter computer-programmes; system-analysis; ICCAT-  
  Zusammenfassung (down) This set of computer programs for stock assessment uses MS FORTRAN 77 version 4.1* for all the programs. The programs will compile under version 3.2 of MS FORTRAN 77, however the Open statements with file types “Unknown” must be changed to “New” or “Old” depending on the expected status of the file. The “shell” called TUNE is used to build the appropriate batch file for submission of the multiple runs used for calibration. Each of these programs is an interactive stand alone module, each can be used independently of the others. This report gives an outline of how and where these programs fit into an analytical process. A set of disks with the source code and the executable (*.EXE) files is available from the editor or the programs can be copied from the ICCAT Secretariat in Madrid; an Annex to this report containing a listing of the source code is also available. A glossary of terms commonly used in the assessment process is presented in Appendix I.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Leer Geprüft  
  Rufnummer Signatur 312  
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Autor Shoesmith, E.   
  Titel A comparison of methods for estimating mean fecundity Typ Zeitschrift, Artikel
  Jahr 1990 Publikation J. FISH BIOL. Kurztitel der Zeitschrift  
  Band 36 Ausgabe 1 Seiten  
  Schlüsselwörter LÄngenfrequenz, normalverteilung, methode, theorie, mathematik, vergleich, statistik  
  Zusammenfassung (down) This paper is concerned with certain computational aspects of estimating the mean fecundity of a single age-class of a population of fish. Four computational methods for estimating mean fecundity are compared by Monte Carlo simulation. One of the four methods is the simple expedient of estimating fecundity at sample mean length, a method known to be downwardly biased. The Monte Carlo study shows that the other three methods reduce bias and provide worthwhile efficiency gains. For small samples, the most efficient of the four methods is a “bias adjustment”, proposed here, that uses easily calculated sample statistics. For large samples, a numerical integration method has the highest efficiency. The fourth method, a “direct summation” procedure which can be done easily in many statistical or spreadsheet programs, performs well for all sample sizes.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Geprüft  
  Rufnummer 212 Signatur 2100  
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Autor Sparre, P.   
  Titel A method for the estimation of growth, mortality and gear selection/recruitment parameters from length-frequency samples weighted by catch per effort Typ Buch, Kapitel
  Jahr 1987 Publikation Kurztitel der Zeitschrift  
  Band 13 Ausgabe Seiten 75-102  
  Schlüsselwörter stock-assessment; recruitment-; size-distribution; length-; mathematical-models, marine-fisheries  
  Zusammenfassung (down) 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.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber MAZZARA-DEL-VALLO,-ITALY Erscheinungsort Editor Pauly, D.; Morgan, G. R.  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Leer Geprüft nein  
  Rufnummer Signatur 1592  
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Autor Akamine, T.   
  Titel A new standard formula for seasonal growth of fish in population dynamics Typ Zeitschrift, Artikel
  Jahr 1993 Publikation NIPPON SUISAN GAKKAISHI BULL. JAP. SOC. SCI. FISH. Kurztitel der Zeitschrift  
  Band 59 Ausgabe 11 Seiten  
  Schlüsselwörter Fisch, wachstum, statistik, modell, population, theorie  
  Zusammenfassung (down) This formula is based on the Richards formula, which includes well-known growth formulae, and is invariant for allometry. It is expanded by exchanging the independent variable from time to its function, in other words the cumulative water temperature. This standard formula includes the method of substituting values for the cumulative water temperature into the time term, the mathematical model of adding sine functions to the time term, and switched growth rate models. This standard model is given by general theory, which makes the character of parameters clear and helps to analyze the growth formula statistically.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Geprüft nein  
  Rufnummer 453 Signatur 2257  
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Autor Caputi, N.   
  Titel Factors affecting the time series bias in stock-recruitment relationships and the interaction between time series and measurement error bias Typ Zeitschrift, Artikel
  Jahr 1988 Publikation CAN. J. FISH. AQUAT. SCI. Kurztitel der Zeitschrift  
  Band 45 Ausgabe 1 Seiten  
  Schlüsselwörter Fischerei, statistik, zeitreihe, methode, modell, theorie  
  Zusammenfassung (down) The stock-recruitment relationship (SRR) and the recruitment to spawning stock relationship (RSR) of the tiger prawn (Penaeus esculentus ) in Exmouth Gulf, Western Australia, were used to examine the time series bias and measurement error bias by Monte Carlo simulations. Simulating the effect of measurement error as well as the random variation about the SRR and RSR helps to determine the possible combinations of measurement error and random variation which may result in the observed variation about the SRR and RSR. The simulations also indicate that there is an interaction between measurement error and random variation about the SRR/RSR on the bias of the parameters of the SRR.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Geprüft nein  
  Rufnummer 434 Signatur 2238  
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Autor Myers, R. A.; Cadigan, N. G.   
  Titel Statistical analysis of catch-at-age data with correlated errors Typ Zeitschrift, Artikel
  Jahr 1995 Publikation Can. J. Fish. Aquat. Sci. J. Can. Sci. Halieut. Aquat Kurztitel der Zeitschrift  
  Band 52 Ausgabe 6 Seiten 1265-1273  
  Schlüsselwörter Fisch, Fischerei, Statistik, Wachstum, Mortalität, VPA, Population, Mathematik, Modell  
  Zusammenfassung (down) The statistical model used is extended to estimate abundance from commercial catch-at-age data for many of the major commercial fish species in the world. The model combines commercial catch-at-age data and research survey estimates of fish abundance; extends the model to allow correlated errors among ages within a year for the survey estimates of fish abundance. Method is formulated for modeling the fishing mortality on the oldest ages of the fish caught. Estimates are obtained using maximum likelihood. The level of correlation among ages is sufficiently large to produce large biases in the standard methods for some stocks. The statistical model that includes correlated errors greatly reduces bias and increases efficiency if the correlation in the estimation error is large.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Dep. Fish. Oceans, Sci. Branch, Box 5667, St. John's, NF A1C 5X1, Canada Geprüft  
  Rufnummer 528 Signatur 2327  
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Autor Akamine, T.   
  Titel An interval estimation for the Petersen method using Bayesian statistics Typ Zeitschrift, Artikel
  Jahr 1989 Publikation Bull. Japan Sea Reg. Fish. Res. Lab. Nissuiken Hokoku Kurztitel der Zeitschrift  
  Band Ausgabe 39 Seiten 19-35  
  Schlüsselwörter Bayesian, binominal, basic, listing, methode, theorie, algorithmus  
  Zusammenfassung (down) The statistical model for the Petersen method is a hypergeometric distribution. Approximation to a binomial distribution has been used, and the usual method for this binomial model is based on approximation to a normal distribution. The Bayesian statistical model for a binomial distribution, which assumes that the prior distribution of parameters is uniform, corresponds well with the conventional method. However, the Bayesian statistical method for a hypergeometric distribution which assumes the uniform prior distribution is not feasible. The prior distribution according to the inverse squared parameter is natural for this model. Beta function and zeta function are important to understand these methods. This model is simpler to understand and easier to calculate by micro-computer than the conventional method.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Geprüft  
  Rufnummer 218 Signatur 2106  
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Autor Akamine, T.   
  Titel An interval estimation for extraction using Bayesian statistics Typ Zeitschrift, Artikel
  Jahr 1989 Publikation Bull. Japan Sea Reg. Fish. Res. Lab. Nissuiken Hokoku Kurztitel der Zeitschrift  
  Band Ausgabe 39 Seiten 9-17  
  Schlüsselwörter Bayesian, normalverteilung, binominal, statistik, theorie, algorithmus, listing, basic  
  Zusammenfassung (down) The statistical model for extraction is a binomial distribution. The conventional method for employing this binomial model is based on approximation to a normal distribution. The Bayesian statistical method, which assumes that the prior distribution of parameters is uniform, is preferable to the conventional method, and two theorems demonstrate that this model corresponds well with the conventional method. Furthermore, this model is simpler to understand and easier to calculate by micro-computer than the conventional method.  
  Adresse  
  Organisation Abschlussarbeit  
  Herausgeber Erscheinungsort Editor  
  Sprache Sprache der Zusammenfassung Originaltitel  
  Editor der Reihe Titel der Reihe Kurztitel der Reihe  
  Band der Reihe Ausgabe der Reihe Edition  
  ISSN ISBN Medium  
  Bereich Expedition Konferenz  
  Notizen Geprüft  
  Rufnummer 222 Signatur 2110  
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