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Landrum, J. L. (1989). Simplification methods for the World Vector Shoreline. Naval Ocean Research and Development Activity, NSTL Station, MS (USA).
Zusammenfassung: The fractal nature of the coastline makes it desirable to sample the World Vector Shoreline (WVS) data base in a manner related to the map scale at which it will be displayed. A survey of US Navy users has determined that several resolutions of the WVS are required. This report shows the relationship among vector data-base resolution, display device resolution, and map scale, then presents three simplification algorithms. These algorithms provide means of reducing the data-base resolution to that which is appropriate for a particular map scale and display device resolution. The discussion is supplemented with a series of maps illustrating the output of the simplification algorithms at several map scales.
Schlüsselwörter: mapping-; computer-programmes; data-processing; vectors-; automated-cartography; algorithms-
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Hoenig, J. M., Prager, M. H., & Payton, N. B. (1989). Computer programs for investigating the effects of environmental events on a time series of recruitment. Department of Fisheries and Oceans, St. John's, Nfld. (Canada). Science Branch.
Zusammenfassung: Prager and Hoenig (in press) used a randomization procedure to test the significance of discrete environmental events, such as el Nino-Southern Oscillation events, on a time series of recruitment. Their procedure implicitly accounted for autocorrelation and other problems frequently encountered when trying to use a parametric testing procedure. In a follow up paper, Prager and Hoenig (in prep.) investigated the power of several randomization tests and compared them to parametric alternatives. This report presents the two Fortran computer programs used in these studies.
Schlüsselwörter: recruitment-; environmental-effects; computer-programmes; time-series; fishery-management
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Leuner, E. (1989). Untersuchungen zur Entwicklung von Triaenophorus nodulosus (Pallas, 1781) (Cestoda, Pseudophyllidea) unter den Bedingungen des subalpinen Königssees sowie zu schädigenden Einflüssen auf den zweiten Zwischenwirt am Beispiel des Seesaiblings (Salvelinus Alpinus, L.). Doctoral thesis, Universität, Hannover.
Schlüsselwörter: Fisch, Parasit
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Özcelik, A., & Deufel, J. (1989). Untersuchungen über fischparasitäre Würmer im Bodensee (Vol. 76).
Schlüsselwörter: Fisch, Parasit
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Berg, R., & Troschel, H. - J. (1989). Ein Nachweis des Dohlenkrebses (Austropotamobius pallipes) LEREBOULLET (1858) in Baden-Württemberg (Vol. 64/65).
Schlüsselwörter: Krebs, Dohlenkrebs, Astropotamobius pallipes, Vorkommen
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Brehmer, B., & Streit, B. (1989). Genetische Variation bei der Groppe (Cottus gobio L.) (Vol. 1).
Schlüsselwörter: Fisch, Groppe, Cottus gobio, Genetik
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Brunken, H., Köhler, C., & Lelek, A. (1989). Lampertheimer Altrhein – Laichgebiet oder Falle für den Wildkarpfen? (Vol. 1).
Schlüsselwörter: Fisch, Cyprinus
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Brunken, H., & Pelz, G. R. (1989). Zur Notwendigkeit des ungehinderten Fischwechsels in kleinen Fließgewässern – die Schunter, ein Beispiel aus Niedersachen (Vol. 1).
Schlüsselwörter: Fisch, Wanderung,
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Gädtgens, A. (1989). Die Rolle der Groppe (Cottus gobio L.) als Konsument des Zoobenthos im Ökosystem eines Mittelgebirgsbaches (Steina / Südschwarzwald). Konstanz: Universität.
Schlüsselwörter: Cottus, Fisch, Biologie, Nahrung
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Gebler, R. J. (1989). Fischaufstiege, derzeitige Situation und zukünftige Konzeption (Vol. 79).
Schlüsselwörter: Fisch, Aufstieg
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