Vegetation analysis of Wadi Kaam at northwest Libya
Fathi AlmushghubDalia Ahmed, Ahmed Sharaf El-Din, Kamal Shaltout
The present study deals with the vegetation analysis of Wadi Kaam in northwest Libya (130 km east of Tripoli). Sixty stands were selected to represent the variations in 20 locations in 4 major habitats types in this area. The present species were recorded in each stand, and their cover was estimated. In the study area, 152 species belonging to 117 genera and 38 families were recorded. Asteraceae was the most prominent family, represented by 30 species and 18 genera. Two endemic species were recorded (Herniaria ericifolia C.C.Towns. and Poa vaginata Pamp. Libya). Therophytes were the most represented (47%) of total recorded species, while parasites were the least. Six trees were recorded in the valley (Pistacia Atlantica Desf., Eucalyptus camaldulensis Dehnh, Eucalyptus leucoxylon F.Muell., Pinus halepensis Mall., Pinus canariensis Sweet ex Sprengel and Ziziphus lotus Lam.). Bisexuals were the most designated sex type (141 species = 93% of total recorded species). The maximum frequency of the flowered species was in April (81%), while the minimum was in August (11%). Mediterranean elements were the most represented (35.5 % of the total species), followed by Sahara-Arabian (22.3%). Four vegetation groups were generated after applying TWINSPAN classification technique on the recorded species. Group 1 was dominated by Peganum harmala L. and Ziziphus lotus Lam, Group 2 Stipa tenacissima L, Group 3 Lobularia Libya (Viv.) Webb & Berthel. and Limoniastrum monopetalum (L.) Boiss. While Group 4 by Asparagus horridus L. and Limoniastrum monopetalous (L.) Boiss.