La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Soil cellulolytic activity in two Algerian alfa (Stipa tenacissima L.) steppes
Auteurs :	Rahma Bessah, Auteur ; Françoise Rozé, Auteur ; Dalila Nedjraoui, Auteur
Type de document :	Article
Dans :	Ecologia Mediterranea (25(2) 1999)
Article en page(s) :	185-192
Résumé :	Cellulose represents an important part of the organic matter returned to soil with the litter of alfa. Thus cellulolytic activity is a good indicator of the soil microbial activity. Different experiments in vitro compared the influence of different conditions, particularly the gradient of aridity, corresponding to two sites: arid alfa steppe and semi-arid alfa steppe. Soil samples were collected underneath and between tufts of vegetation. Different temperature and humidity were chosen in function of climatic data. Two levels soil depth were studied. From our results, it can be concluded that cellulolytic activity in the arid alfa steppe soils is less intense than in the semi-arid ones, as determined in vitro.

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...