Kinzelbach, R. (1991). Impulse, Bewältigung eines Unfalls (Vol. 5).
Schlüsselwörter: Impuls, Bewältigung, Unfall
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Jungwirth, M., & Muhar, S. (1991). Gutachten zu möglichen Auswirkungen von Kleinwasser-Kraftanlagen auf Fließgewässer-Ökosysteme.
Schlüsselwörter: Kraftanlagen, schÄden, gutachten, Ökosystem, fischerei
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Schumacher, V. (1991). Der Steinkrebs Astacus torrentium im Goldersbachsystem unter besonderer Berücksichtigung des Auftretens der “Krebspest”. Tübingen: Universität.
Schlüsselwörter: Krebs, Astacus torrentium, Steinkrebs, Lebensraum, Lebensweise
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France, R., Holmes, J., & Lynch, A. (1991). Use of size-frequency data to estimate the age composition of crayfish populations (Vol. 48).
Zusammenfassung: Age-classes in crayfish populations can be determined from size-frequency data provided 4 tents are adhered to only crayfish collected from areas of rock substrate are used; trapping are excluded; species do not have longevities exceeding about 4 yr; and most importantly, sample sizes are greater than about 200. Studies that have failed to follow these guidelines have met with limited success in dissecting mixed frequency distributions. Further, 3 validation procedures must be undertaken: temporal replication within molting events to measure the precision of both data collection and size-frequency analysis; corroboration with known-age crayfish from either field recaptures or laboratory molt increments; and concordance with independent analysis of the mean size at onset of sexual maturity. When these checks support the size-frequency results, population age composition and analyses of rates of growth or mortality can be considered reliable.
Schlüsselwörter: Krebs, lÄngenfrequenz, methode, statistik, population
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Simon, K. H. (1991). Doppelblick – Praktische Aspekte der Umweltinformatik.
Schlüsselwörter: Modell, methode, simulation, zusammenfassung
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Schulman, A. (1991). Stop Secret.
Schlüsselwörter: Ms-dos, theorie, dokumentation, turbo-c, listing
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Börner, W. (1991). Verkabelte Welten.
Schlüsselwörter: Netzwerk, Grundlage, theorie, zusammenfassung
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(1991). Was ist TCP/IP.
Schlüsselwörter: Netzwerk, theorie, norm, Grundlage
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Salewski, V. (1991). Untersuchungen zur Ökologie und Biometrie einer Bachneunaugen-Population (Lampetra planeri) im Odenwald (Vol. 4).
Schlüsselwörter: Neunauge, Lampetra planeri, Biometrie, Bachneunauge, Vorkommen, Wachstum
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(1991). Objektorientierte Programmierung.
Schlüsselwörter: Oop, Grundlage
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