Issue |
Annls Limnol.
Volume 8, Number 2, 1972
|
|
---|---|---|
Page(s) | 217 - 222 | |
DOI | https://doi.org/10.1051/limn/1972004 | |
Published online | 16 June 2011 |
Influence de la mesure chimique du débit sur les invertébrés d'un ruisseau de montagne
The effect of a chemical method for gauging discharge on the invertebrates of a mountain river
1
Laboratoire d'Hydrobiologie, Université Paul-Sabatier, Toulouse
2
Freshwater Biological Association, Ambleside, Westmorland.
Les variations dans la dérive des invertébré sont été observées au cours d'une expérience de mesure chimique du débit dans un ruisseau de montagne. Un léger accroissement de dérive existait quand de la fluorescéine ou du bichromate étaient introduits dans le ruisseau. Cet accroissement n'était statistiquement significatif que pour les nombres totaux et non pour les taxa pris séparément.
Abstract
Variations in invertebrate drift were studied during the gauging of discharge in a mountain river (constant rate injection method with dichromate during gauging, and fluorescein in the preliminary trial). There was a slight increase in the numbers in the drift when the fluorescein or dichromate was introduced into the river, but this increase was only statistically significant for total numbers (Table 2), not for individual taxa (Table 3).
© Masson, 1972
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