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Title of Journal: Hydrobiologia

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Abbravation: Hydrobiologia

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Springer Netherlands

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DOI

10.1016/0040-6090(83)90392-9

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1573-5117

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Die eintagsfliegen Emphasis Type="Italic"Epheme

Authors: Milos Zelinka
Publish Date: 1973/07/01
Volume: 42, Issue: 1, Pages: 13-19
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Abstract

Der erste Teil 1969 behandelte die Abundanz and Biomasse Auf Grund der LängeMessung aller Ephemerenlarven and des Abzählens des entsprechenden Gewichtes von der Kurve der Beziehung Länge Gewicht wurde der Zuwachs für jeden Monat ausgerechnet Dieser machte im Jahresdurchschnitt für Baetis rhodani 5317 g/m2 für Rhithrogena semicolorata 12478 and für das Genus Ecdyonurus 847 g/m2 aus Bei allen drei Arten war die Beziehung zwischen der Jahresproduktion and der mittleren Biomasse beinahe diegleiche = 1 837 Diese 3 Arten bildeten 76 der Biomasse Nach Zurechnung der übrigen Ephemerenlarven macht der gesamte Zuwachs in den untersuchten Bächen 27152 g/m2 = 27152 kg/ha pro Jahr ausThe first part 1969 dealt with the abundance and biomass of the mayflies Ephemeroptera On the basis of the measurement of length of all mayflies and of the determination of the respective weight according to the curve expressing the relation length weight the production for each month was calculated The annual average for Baetis rhodani amounted to 5317 g/m2 for Rhithrogena semicolorata 12478 and for the species belonging to the genus Ecdyonurus 847 g/m2 The relation between the annual production and average annual biomass was nearly the same in all three species = 1 837 These three taxa formed 76 of the biomass After addition of the remaining taxa of mayflies the production of Ephemeroptera in the two brooks under investigation totalled 27152 g/m2 = 27152 kg/ha per year

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