Social and economical developments increase the degradation of natural resources. These changes modify the natural state of the environment, exert stresses on water, soil and vegetation and consequently affect people's life. Sustainable management of these resources requires integrated management approaches at the watershed scale level. This work reports on a hypsometrical approach that uses watershed's physical, hydrological, and biological data. This approach allows the user to relatively compare the effects of different future and current management scenarios and make choice on ways to improve or at least preserve the environment and natural resources.
Location of the Study AreaFoum Tillicht basin (Figure 1) is located in the south of Morocco within the Midelt province (Aqid et al., 2002(1)). The area 99
Knowledge of mechanisms by which large mammals select rubbing trees (RT) is a major challenge for the effective management of forests and wildlife resources. In this study, we investigated this issue regarding the wild boar (Sus scrofa) in the Moroccan forested site of Sidi Boughaba as a case study. We used data from four sets of variables, namely topography, forest type, landscape composition, and microhabitat, measured at 58 rub and control trees, to determine the factors associated with the occurrence of RT by means of generalized linear mixed models. Our results showed that the RT occurrence increased with a high density of red juniper trees and declined with a distance to the nearest footpath. The variation partitioning analysis revealed that the pure fraction of microhabitat was the most robust in explaining this occurrence (adj. R 2 = 0.17, P < 0.001), followed by that of forest type (adj. R 2 = 0.05, P < 0.05). A scientific monitoring system must be set up to strike a balance between the availability of forest trees on the one hand and the pressure exerted by wild boars in this internationally important site on the other. It is imperative to test the geographical generality of our results in other Mediterranean forests.
Les prospections archéologiques menées entre 1995 et 2011 sur le rivage océanique marocain compris entre Souira Qdima, au nord, et l’embouchure de l’oued Assaka, au sud, ont permis la localisation de nombreux amas coquilliers parfois exclusivement composés de tests de pourpres (Stramonita haemastoma L.) dont l’apex a été cassé. Certains de ces dépôts montrent plusieurs couches dont une contient des tessons de céramique romaine. Plusieurs sites à tessons et pourpres sont assez étendus et structurés pour suggérer des villages (Sidi Warzig, Aftas Qdim d’Issouh, Douira…). L’un de ces dépôts, gisant en place sous les vestiges de la tour hispano-canarienne de San Miguel d’Assaka (xve siècle), a pu être étudié de façon quelque peu approfondie. Tout porte à penser qu’il s’agit d’un atelier pour la fabrication de la pourpre gétulique, car il est daté par le C14.
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