Plant diversity, dispersion, community similarity and vegetation description in united arab emirates. I. North western area
البيانات الوصفيةعرض كامل للتسجيلة
Papers presented at The gulf symposium on Environmental biology, University of Qatar, 7-9 May 1994 *********** Plant population patterns in six natural communities (A-F) in the northern part of the UAE were studied. The study included: list of species and their frequencies; dispersion, species-area; diversity richness, heterogeneity, and evenness; community similarity indices; ordination; and cluster analysis. Recorded species were 39 with mean = 1.59, median = 1, variance = 0.77, and sd = 0.88. Dispersion index confirmed the presence of more uniform dispersion than random (P<0.01). Species-area varied among the six communities with a low proportion of variation (r ) in A and high D. Diversity richness indices were 2.22, 2.02, 1.36. 3.05, 4.9 and 1.6 in communities A, B, C, D, E, and F respectively (Margalef) and from 1.15 to 2.45 (Menhinick); Heterogeneity indices were from 8.2 to 9.6 (Simpson), 1.6 to 3.1 (Shan-on H'); Evenness indices were 0.99 to 0.95 (Pielou J'), 0.89 to 0.98 (Sheldon). Results of community similarity confirmed the ordination calculations and reflected 100% dissimilarity between B and D, B and F, and C and F; and an overall dissimilarity among all communities.
- مجلة جامعة قطر للعلوم - [من 1981 الى 2007] [770 items ]