The Distribution of Soil Fauna in the Forest of Theniet El Had

Mesofauna and soil macrofauna in the forest of National Park of Theniet El Had were studied by two different methods: Direct manual sorting (TSBF) and trapping by Barber pots. Seasonal sampling was undertaken in three selected stations in the canton nursery according to vegetation. The diverse fauna sampled was represented by 57 families, varies in the three stations. For the first station (Sub cedars), a density of 5086 ind/m2 followed by the station III (Assistant holm oak) with a density of 3870 ind/m2 and Station II (Sub cedar anthropized) with a density of 3780 ind/m2. The highest density was observed in spring and summer. The physicochemical factors play a major role in their vertical distributions in particular pH. Environmental conditions, compactness, and low quality of available organic resources to determine the density, diversity, and spatial distribution of soil invertebrates in the Park.