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Comparative physico-chemical and faunal studies of two thermal springbrooks near Sidi Harazem (Morocco)

Published online by Cambridge University Press:  01 February 2009

I. Berrady ,
K. Essafi  and
J. Mathieu
I. Berrady
Affiliation:
Laboratoire d'Hydrobiologie et Ecologie Générale, Faculté des Sciences Dhar El Mehraz, Fès, Maroc
K. Essafi
Affiliation:
Laboratoire d'Hydrobiologie et Ecologie Générale, Faculté des Sciences Dhar El Mehraz, Fès, Maroc
J. Mathieu
Affiliation:
Laboratoire d'Hydrobiologie et Ecologie Souterraines, Université Claude Bernard Lyon I, ESA CNRS 5023, 43 Bd du 11 novembre 1918, F-69622 Villeurbanne Cedex France
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Abstract

The origin of the water of the two Sidi Harazem springs (Morocco), was found to be different. Environmental parameters made it possible to recognise three types of water : one issuing from a "cool spring", with lowest temperature (mean : 26.7°C), conductivity and chloride concentration ; one issuing from the "hot spring" (mean : 31.7°C) with the highest temperature and high conductivity ; and the one of the oued itself with into which both springs flow. This oued had the highest values of pH, conductivity, chlorides, and calcium. The interstitial fauna collected by means of artificial substrates was composed of both epigean and stygobite species. Only the "cool spring" included stygobite species, the number of which generally decreased with depth.

Keywords

groundwatermoroccan hot springsinterstitial communitieseau souterrainesources chaudes marocainescommunautés interstitielles
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 36 , Issue 4 , December 2000 , pp. 261 - 274
Copyright
© Université Paul Sabatier, 2000

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