2.1. Study area The research area is the 3838 ha Kalaya catchment in north of Morocco (Fig. 1) located in the southern part of Tangier city. The study area has a Mediterranean climate sub-humid to wet,
2.1. Study areaThe research area is the 3838 ha Kalaya catchment in north ofMorocco (Fig. 1) located in the southern part of Tangier city. Thestudy area has a Mediterranean climate sub-humid to wet,