✦ LIBER ✦

H. B. N. HYNES: A Key to the Adults and Nymphs of British Stoneflies (Plecoptera) with Notes on their Ecology and Distribution. Third edition. = Scientific Publication No. 17.- With 47 fig., 1 map, 92 pp. Far Sawrey, Ambleside: Freshwater Biological Association 1977. ISBN 900386 28 2. £ 0.40

✍ Scribed by H. Caspers

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 95 KB
Volume: 65
Category: Article
ISSN: 1434-2944
DOI: 10.1002/iroh.19800650116

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✦ Synopsis

Buchbesprechungen 171 flos-aquae-und Aphanizomenon-Wasserbliiten sind nicht immer toxisch, wie der nicht vorbelastete Leser aus der Passage auf S. 23 schlielen wiirde; wieso sind ,,Blaualgen oft nahezu die einzigen Algen, die in stark mit organischen Abwassern verschmutztem Wasser noch wachsen konnen" (S. 24)? Wenn man den Ausfiihrungen auf S. 206 glauben 5011, ist das Vorkommen der Siilwasser-Cryptophyceen auf kleine, oft leicht verschmutzte Tiimpel und Pfiitzen beschrankt. Wie ordnet sich da das regelma5ige und oft massenhafte Vorkommen in Talsperren aller Trophiegrade ein? Oder:

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