Altitudinal and r
Altitudinal and rocky habitats of the flora eastern and western sides of the Al Jabal Al Akhdar in Libya
Abusaief, Huda. Mohamed Abd Al Razik.1 Dakhil, Ansaf. Husien2, and Al-Mogasby Abd Al Salam.3
1Agron. Fac. Agric., Omar Al-Mukhtar Univ. 2Bot. Fac. Sci. Omar Al-Mukhtar Univ. 3Herbarium Fac. Sci. Benghazi Univ. Bossef_mohamed@yahoo.com
Abstract: The study was conducted during 2010 and 2011 at two different areas Al-Mansora and Jarjr-oma in Al Jabal Al Akhdar. The ecological surveys are necessary for an adequate characterization of a plant community and change in different along altitudinal gradient species in importance value, dominance and plant density. In Rocky habitat increased number of species to 175 species in Al-Mansora when altitude 309.4 m asl and 153 species in Jarjr oma when altitude 1 m asl. However, altitude in Rocky habitat of Al Mansora gave the highest number of species than that of Jarjr oma percent 7 % although of increase altitude. In Al Mansora habitat the importance value of the different association type 1 to 8, the values of species Thymus capitatus high in all characteristics, following Cistus parviflorus give highest presence during autumn season its species unpalatable.Vegetation dendrogram of stands based on Dominance of the species TWINSPAN classification four groups of Rocky habitat Al Mansora area, dominant by Cistus parviflorus, Rhamnus lycioides, Thymus capitatus andSarcopoterium spinosum. In general, Rocky Coastal of Jarjr oma area gave highest the IV species Rhus tripartita,Sarcopoterium spinosum, Arisarum vulgare and Suaeda vera, wherever, dominance the indicator species Rhus tripartita, Sarcopoterium spinosum, Juncus acutus and Periploca angustifolia. The effect of difference seasons on plant density of Rocky Coastal were annuals species such as Mercurialis annua and Anagallis arvensis gave the highest plant density 1.2 plant per m2 in autumn its unpalatable species. However, species of Arisarum vulgarehad the highest plant density than that of Mercurialis annua in winter. Palatable species such as Hordeum marinum and Frankenia hirsuta gave highest in spring, in summer season Sarcopoterium spinosum, Rhus tripartita and Juncus acutus had the highest plant density and its palatable species except Sarcopoterium spinosum. Al Mansora Rocky habitat was soil texture in community Thymus capitatus was silty lome while soil texture in community Sarcopoterium spinosum and Cistus parviflorus was silty clay, however, Rocky Coastal of Jarjr oma convergent community to clay perecentage of Suaeda vera and Sarcopoterium spinosum both 44%, while Rhus tripartita 42%, silty clay loam in Sarcopoterium spinosum. pH value a natural generally in all community. Electrical conductivity community Suaeda vera have highest mean value of 2.42 mmohs/cm.
[Abusaief, Huda. Mohamed Abd Al Razik, Dakhil, Ansaf. Husien and Al-Mogasby Abd Al Salam. Altitudinal and rocky habitats of the flora eastern and western sides of the Al Jabal Al Akhdar in Libya. J Am Sci2013;9(6):101-127]. (ISSN: 1545-1003). http://www.jofamericanscience.org. 13
Keyword: Altitudinal, Rocky habitat, Flora, Dominance, Density and Important value Full Text 13