Coste M., Riaux-Gobin C., Riaux Jeanne, Saenz-Agudelo P., Massuel Sylvain, Ector L., Calvez Roger, Ben Aissa N. (2019). Ain Bou Rkhiss and Ain Kibrit, two springs from the Merguellil basin (Kairouan, Central Tunisia) : diatom assemblages, biological polluosensitivity indices, hydrogeology and societal aspects. Vie et Milieu = Life and Environment, 69 (1), p. 1-17. ISSN 0240-8759.
Titre du document
Ain Bou Rkhiss and Ain Kibrit, two springs from the Merguellil basin (Kairouan, Central Tunisia) : diatom assemblages, biological polluosensitivity indices, hydrogeology and societal aspects
Année de publication
2019
Auteurs
Coste M., Riaux-Gobin C., Riaux Jeanne, Saenz-Agudelo P., Massuel Sylvain, Ector L., Calvez Roger, Ben Aissa N.
Source
Vie et Milieu = Life and Environment, 2019,
69 (1), p. 1-17 ISSN 0240-8759
Surveys of the diatom assemblages from Ain Bou Rkhiss and Ain Kibrit, two springs that flow out into the Merguellil Wadi, and Ain Ben Ali, a well located a few kilometers to the east, in the same geological formations (Kairouan district, Central Tunisia), were conducted in 2014 and 2016. The aim of this study was to characterize the species diversity of these water points, establish their ecological status and test the water quality using diatom indices standardized in France [Biological Diatom Index (BDI) and Specific Polluosensitivity Index (SPI)]. Several physical-chemical variables were measured in 2016. Ain Bou Rkhiss and Ain Kibrit are in close proximity to one another but differ in terms of their bio-geochernical characteristics and uses (drinking water for domestic use and sulfur-rich water). We discuss the population's growing anxiety with respect to their water supply and explore the traditional knowledge concerning the region's groundwater circulation. The BDI index, reveals a lower quality than that assumed by local users. This may be due to a lack of knowledge about some other local water supplies of good quality that would have served as reference, and inadequacy of these methods designed for European freshwaters without consideration of more southern diatoms. A new variety of Luticola is described.
Plan de classement
Limnologie biologique / Océanographie biologique [034]
;
Ecologie, systèmes aquatiques [036]
;
Hydrologie [062]
;
Géologie et formations superficielles [064]
Description Géographique
TUNISIE ; KAIROUAN ; MERGUELLIL BASSIN
Localisation
Fonds IRD [F B010076230]
Identifiant IRD
fdi:010076230
