Angermeier, P. L., & Smogor, R. A. (1995). Estimating number of species and relative abundances in stream-fish communities: Effects of sampling effort and discontinuous spatial distributions (Vol. 52).
Zusammenfassung: The authors sampled fishes and measured microhabitat in series of contiguous habitat units (riffles, runs, pools) in three Virginia streams. Monte Carlo simulations were used to construct hypothetical series of habitat units, then examined how number of species, similarity in relative abundances, and number of microhabitats accumulated with increasing number of habitat units (i.e., sampling effort). The curves indicated that 90% of the species present were usually found by sampling 5 to 14 habitat units (stream length of 22-67 stream widths). Estimates of species relative abundances required less sampling effort for a given accuracy than estimates of number of species. Rates of species accumulation (with effort) varied among streams and reflected discontinuity in species distributions among habitat units. Most discontinuity seemed to be due to low population density rather than to habitat selectivity. Results from an Illinois stream corroborated our findings from Virginia, and suggested that greater sampling effort is needed to characterize fish community structure in more homogeneous stream reaches.
Schlüsselwörter: Fisch, Fließgewässer, Habitat, Verbreitung
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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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Honsig-Erlenburg, W., & Friedl, T. (1995). Erstnachweis des Steingreßlings (Gobio uranoscopus Agassiz, 1828) in Kärnten (Vol. 185).
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Spiess, H. - J. (1995). Ergebnisse ichthyofaunistischer Untersuchungen im Biosphärenreservat “Mittlere Elbe” (Vol. 32).
Schlüsselwörter: Fisch, Vorkommen, Biologie, Kartierung
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Bager, J. (1995). Einstürzende Neubauten? – 'Client/Server' ist als Systemarchitektur richtungsweisend, aber nicht ohne Risiko.
Schlüsselwörter: datenbank, theorie, Grundlage, sql
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Fiedler, W. (1995). Einheimische Wildfische: Die Fischfauna stehender und fließender Gewässer Mitteleuropas. Lebensräume, Beobachtungen, Pflegehinweise. Melle: Tetra Verlag.
Schlüsselwörter: Fisch, Biologie, allgemein
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Kästle, A., Krettek, R., & Stelzer, M. (1995). Einfluß von Renaturierungsmaßnahmen auf die Fischfauna von Mittelgebirgsbächen (Vol. 2).
Schlüsselwörter: Fisch, Renaturierung
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Will, A. (1995). Einblick – 3D-Grafik mit OpenGL für Windows 95 und NT.
Schlüsselwörter: 3-d, OpenGl, Grundlage, theorie, listing
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Wünstel, A. (1995). Ein männliches Bachneunauge Lampetra planeri (Bloch), in einer Laichgrube des Flußneunauges, Lampetra fluviatilis (L.) (Vol. 7).
Schlüsselwörter: Neunauge, Lampetra planeri, Lampetra fluviatilis, Bachneunauge, Flussneunauge
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Losso, P., & Sternberg, U. (1995). Ein besonderer Dreh – Drehung im Raum – eine elegante Variante.
Schlüsselwörter: 3d, algorithmus, methode, mathematik, pascal, listing
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