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Troschel, H. J., & Wetzlar, H. J. (1990). Auswirkungen von elektrischen Fischfanggeräten auf Flußkrebse (Vol. 2).
Schlüsselwörter: Krebs, Elektrofischerei, Schaden, Schädigung
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Wichowski, F. - J. (1990). Parasiten als Indikator von Wanderungen der Elbflunder Platichthys flesus (LINNEAUS, 1758) (Vol. 2).
Schlüsselwörter: Fisch, Flunder, Platichthys flesus, Vorkommen, Elbe, Parasit, Wanderung
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Shoesmith, E. (1990). A comparison of methods for estimating mean fecundity (Vol. 36).
Zusammenfassung: 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.
Schlüsselwörter: LÄngenfrequenz, normalverteilung, methode, theorie, mathematik, vergleich, statistik
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Mittnik, S. (1990). Computation of Theoretical Autocovariance Matrices of Multivariate Autoregressive Moving Average Time Series (Vol. 52).
Schlüsselwörter: Mathematik, zeitreihe, modell, theorie, statistik
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Männchen, C., & Schramm, K. (1990). Die C-Werkstatt – Zeigerprogrammierung.
Schlüsselwörter: Turbo-c, Grundlage, programmieren, listing, tips
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Harka, A. (1990). Zusätzliche Verbreitungsgebiete der Marmorierten Grundel (Proterorhinus marmoratus Pallas) in Mitteleuropa (Vol. 1990).
Schlüsselwörter: Fisch, Marmorierten Grundel, Proterorhinus marmoratus, Verbreitung, Vorkommen
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Bless, R. (1990). Die Bedeutung von gewässerbaulichen Hindernissen im Raum-Zeit-System der Groppe (Cottus gobio L.) (Vol. 65).
Schlüsselwörter: Fisch, Cottus gobio, Wanderung
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(1990). Parallele Rechner (Vol. 4).
Schlüsselwörter: Hardware, theorie, dokumentation
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Barandun, J. (1990). Auswirkungen von Ausbreitungsbarrieren auf das Vorkommen von Groppen (Cottus gobio) – Anregungen für den Artenschutz (Vol. 65).
Schlüsselwörter: Fisch, Wanderung, Barriere, Groppe, Cottus gobio
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Clay, D. (1990). TUNE: A series of fish stock assessment computer programs written in FORTRAN for microcomputers (MS DOS) (Vol. 32).
Zusammenfassung: 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.
Schlüsselwörter: computer-programmes; system-analysis; ICCAT-
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