Termites (Isoptera) are invertebrates that play many ecological functions in terrestrial ecosystems, especially in tropical areas. Their impacts on the quality and the fertility of the soil are well known. However, in Senegal termite fauna is still poorly known. Thus, to contribute to the knowledge of termites of Senegal we have conducted a study on their diversity in the region of Kolda (Casamance). Termites were sampled in transects of 100 m long and 20 m wide. Termite workers, soldiers and some time reproductives are collected in vials filled with ethanol 70°. Thirty (30) termite species have been identified. Five of them are new records for Senegal. The four trophic groups xylophagous, fungus-growing termites, harvester or foraging termites and soil-feeding were represented. The fungusgrowing termites are more diversified. According to the types of nests, termites encountered are divided into 3 groups. The more diversified are those that build ground-nest without fungus.

Objective: To assess the effect of vegetation cover on soil macrofauna, a study focused on the diversity of soil macrofauna inside and outside reforestation plots of the Great Green Wall in Senegal was carried out. Methodology: The sampling of macrofauna was performed according to the method recommended by the TSBF network (Tropical Soil Biology and Fertility). It involves isolating 10 ground plots along a transect of 50 meters chosen at random in each plot and outside of each plot. The macrofauna was sampled between February and July 2016 during the dry season Results: The results show, in order of importance Hymenoptera, Isoptera, Coleoptera, the Spiders, the isopods and springtails are the taxonomic groups of the study area. The density of each of these taxa is larger inside and outside of the plots. The vertical distribution of macrofauna shows that the 0-10 cm layer is more densely populated than the deeper layers. Conclusion: This study showed a low diversity of soil macrofauna in the area. It also shows that the vegetation cover affects the density of the macrofauna.

In each plot a surface of one hectare was delimited. The number of ligneous species as weel as the number of individual of each attacked spicy were counted. The termites species that attack them were made an inventory of this survey has allowed to make an inventory of fifteen ligneous species attacked by fourteen Termites species. The most attacked species are Boscia senegalensis and Balanites aegyptiaca . The species like Acacia are only attacked on the sides the bark of which was abstracted. The species like (such as) Psammotermes, Microcerotermes and Odontotermes attack most on ligneous. Journal of Applied Biosciences