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Broekhuizen, N., Gurney, W. S. C., Jones, A., & Bryant, A. D. (1994). Modelling compensatory growth (Vol. 1994).
Schlüsselwörter: Modell, wachstum, Fisch, Längenrelation, Mathematik, Statistik
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Brümmer, I. (1994). Untersuchungen über Fischartengemeinschaften der Elbtal-Aue bei Wittenberge, Brandenburg/Sachsen-Anhalt.
Schlüsselwörter: Fisch, Fischarten, Gemeinschaft, Elbtal-Aue
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Brümmer, I. (1994). Untersuchungen über Fischartengemeinschaften der Elbtal-Aue bei Wittenberge, Brandenburg/Sachsen-Anhalt. Braunschweig: Carolo-Wilhelmina-Universität.
Schlüsselwörter: Fisch, Arteninventar
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Coppola, S. R., Fischer, W., Garibaldi, L., Scialabba, N., & Carpenter, K. E. (1994). Global species database for fishery purposes. User's manual.
Zusammenfassung: The SPECIESDAB manual describes the use of software created to assist in the retrieval of information relevant to species of interest to fisheries. Data on scientific and vernacular nomenclature, biology, fishing gears, and geographical distribution are included for species that belong to certain marine resource groups. This information is derived from the FAO Fisheries Department species identification and data programme publications and the software is designed to permit continual updating as new publications on other resource groups appear. To date, some 25 major resource groups are covered. Among these are shrimps, lobsters, cephalopods, sharks, marine turtles, and 20 families of bony fishes, which together form a significant component of world fisheries. The program uses a menu system to provide users easy access to the information contained in SPECIESDAB. The manual includes extensive examples of how to use the software. On-line help is also available. Extensive query and reporting capabilities are provided to access data on valid scientific names, synonyms, national and local names, official FAO trilingual names, size, habitat, behaviour, kinds of gear utilized in the fishery, and level of interest to fisheries. Geographical information may be obtained by species, by country, or by fishing area. Data may be extracted for either a single resource group or for all resource groups in combination. Furthermore, the user interested in using only the data of species occurring in a particular geographical area can create, with the Regional option, a sub-database including only the species found in the countries selected. This option can be useful for regional bodies and working groups. SPECIESDAB includes a bibliographic reference system, which may be updated by the user as well as utilities for exporting data.
Schlüsselwörter: fishery-data; data-collections; fishery-resources; commercial-species; information-retrieval; manuals-; FAO-; books-, Speciesdab-
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Dußling, U. (1994). Radiotelemetrische Untersuchnungen an Barbe (Barbus barbus L.) in einem ausgebauten Fließgewässer. Konstanz: Universität.
Schlüsselwörter: Fisch, Barbus, Wanderung, Telemetrie
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Ebel, G. (1994). Ichthyofaunistische Untersuchungen in der Saale im Gebiet von Sachsen-Anhalt. Natursch. i. Land Sachsen-Anhalt, 31, 49?54.
Schlüsselwörter: Fisch, Sachsen-Anhalt, Vorkommen
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Ebel, G. (1994). Ichthyofaunistische Untersuchungen in der Saale im Gebiet von Sachsen-Anhalt. Natursch. i. Land Sachsen-Anhalt, 31, 49?54.
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Fischer, P. (1994). Litorale Fischbiozönosen in einem großen See – der Bodensee. Kiel: Christian-Albrechts-Universität.
Schlüsselwörter: Fisch, Litoral, See, Barsch, Perca fluviatilis, Bodensee
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Fore, L. S., Karr, J. R., & Conquest, L. L. (1994). Statistical properties of an index of biological integrity used to evaluate water resources (Vol. 51).
Zusammenfassung: The authors determined the statistical properties of the index of biotic integrity (IBI) from electrofishing samples collected from Ohio streams. Although IBI is widely used to evaluate the condition of water resources by biologists and resource managers, expanding its role as a regulatory tool depends on statistical validation of its precision and power. We addressed these issues by constructing an additive variance model for IBI and testing the assumptions of that model directly with a bootstrap resampling algorithm and simulations using field data. Statistical properties of IBI supported the use of standard analysis techniques such as ANOVA for hypothesis testing. We determined with power analysis that IBI can distinguish between five and six nonoverlapping categories of biotic integrity based on a model that includes the effects of measurement error, variability of fish assemblages through time, and statistical interaction of location and time.
Schlüsselwörter: Umweltverschmutzung, Fisch, Elektrofischerei, Methode, Mathematik, Modell, Statistik, ANOVA
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Gascuel, D. (1994). [A simple adjustment method of age-length keys: Application to yellowfin tuna (Thunnus albacares) catches in the East Atlantic.] (Vol. 51).
Zusammenfassung: An adjustment method for age-length keys is presented that incorporates yearly variability in cohort abundances. The method is based on two models (one for growth and the other for standard deviations of length versus age) and involves an iterative algorithm. The algorithm rapidly converges to stable results that yield, under some conditions, maximum likelihood estimates. It is also used to estimate parameters of the length standard deviation model. The method is applied to yellowfin tuna (Thunnus albacares) catches in the eastern Atlantic from 1975 to 1989.
Schlüsselwörter: fishery-management; stock-assessment; mathematical-models; growth-curves; biological-age; length-; Thunnus-albacares; AE,-East-Atlantic; tuna-fisheries
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