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Publication Type J
Authors Al-Sodany, Y. M., M. N. Shehata and K. H. Shaltout
Title Vegetation along an elevation gradient in Al-Jabal Al-Akhdar, Libya
Source Ecologia Mediterranea
Author Keywords Monocotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Monocots, Plants, Spermatophytes, Vascular Plants Amaryllidaceae [25220] [Pancratium maritimum]/Dicotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Dicots, Plants, Spermatophytes, Vascular Plants Chenopodiaceae [25795] [Suaeda vermiculata]/Dicotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Dicots, Plants, Spermatophytes, Vascular Plants Compositae [25840] [Cichorium spinosum]/Gymnospermae, Spermatophyta, Plantae Gymnosperms, Plants, Spermatophytes, Vascular Plants Coniferopsida [25102] [Juniperus phoenicea]/Monocotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Monocots, Plants, Spermatophytes, Vascular Plants Gramineae [25305] [grass] [Ammophila arenaria]/Dicotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Dicots, Plants, Spermatophytes, Vascular Plants Leguminosae [26260] [legume] [Retama raetam]/Dicotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Dicots, Plants, Spermatophytes, Vascular Plants Plumbaginaceae [26585] [Limoniastrum monopetalum]/Dicotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Dicots, Plants, Spermatophytes, Vascular Plants Rosaceae [26675] [Sarcopoterium spinosum]/Dicotyledones, Angiospermae, Spermatophyta, Plantae Angiosperms, Dicots, Plants, Spermatophytes, Vascular Plants Rubiaceae [26680] [Crucianella maritima]
Abstract Al-Jabal Al-Akhdar is an upland region which lies at the northeast part of Libya, in Cyrenaic. The study area is an N-S transect of about 30 km between El-Hamamah (near the sea level: 33 degrees 53' N and 21 degrees 39' E) to El-Bydda in the south (600 m above the sea level: 33 degrees 17' N and 21 degrees 50' E). This area is characterized by a wide physiographic variation that leads to distinguish of many habitats such as coastal saline sand flats, sand dunes, sand flats and hills, and inland plateau with terraces and wadis. 165 stands were sampled to analyze the vegetation of this area. 119 plant species were recorded (43 annuals and 76 perennials) including six endemic species. The composites have the highest contribution to the total flora, followed by the grasses and legumes. The application of two-way indicator species analysis (TWINSPAN) resulted in agglomerating of 30 vegetation groups at the level seven and six major ones at the levels three and two of this classification: Juniperus phoenicea - Sarcopoterium spinosum that occupies a wide elevation gradient, Crucianella maritima - Suaeda vermiculata along the seaward direction of the coastal hills, Retama raetam in the coastal sand flats, Pancratium maritimum - Ammophila arenaria in the coastal sand dunes, Cichorium spinosum and Limoniastrum monopetalum in the saline sand flats of the coastal plain. The application of the detrended correspondence analysis (DECORANA) indicates reasonable segregation between these vegetation groups. Juniperus phoenicea - Sarcopoterium spinosum group is the most prominent vegetation type in the study area (i.e. Mediterranean matorrals) where its diversity and cover increases with elevation reaching the Mediterranean forests at the highest elevated sub-humid zones.
Author Address Al-Sodany, Y. M.; Tanta Univ, Fac Educ Kafr El Sheikh, Biol and Geol Sci Dept, Kafr Al Sheikh, Egypt
ISSN 0153-8756
ISBN 0153-8756
Year Published 2003
Volume 29
Issue 2
Beginning Page 125-137
Unique Article Identifier BCI:BCI201200663364
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