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Assessment of Vegetation and Nutritive Value of Three Halophytes in Sinai Peninsula, Egypt.



This study throws light on the vegetation and nutritive value of three communities dominated by three halophytes namely: Atriplex halimus L. (Saltbush), Nitraria retusa (Forssk.) Asch. (Salt tree) and Juncus rigidus Desf. (Thread rush). The vegetation analysis of the three communities was carried out using the line transect method. The distribution pattern of the dominant species along the gradient of edaphic factors was examined using CCA ordination. The nutritive value of the dominant species such as ash, crude fiber, crude protein, TDN and DCP were evaluated during wet and dry seasons. The results showed that, the communities were classified into five groups according to TWINSPAN classification. In groups (A, B) the dominant species is A. halimus, while in groups (C, D) the dominant species is N. retusa and in group (E) the dominant species is J. rigidus. Soil supporting species at different sites are saline-calcareous and sandy with low organic matter content. The pH values were slightly alkaline. The total dissolved salts and soil moisture reached their maximum levels in the sites of J. rigidus. The most effective soil variables were CaCO3, moisture contents, soil texture and minerals such as sodium, potassium, calcium, magnesium and chloride. The nutritive value was higher in wet season than in dry one. N. retusa (Salt tree) and A. halimus (Saltbush) have high nutritive value than J. rigidus (Thread rush) and could be used as a source of fodder for livestock
... Many species are of economic importance in the arid regions playing a significant role in soil protection and sand dune stabilization against movement by wind or water. In addition, they provide a source of forage for animals, fuel and food for local inhabitants, and have medicinal and potential industrial value (Laudadio et al. 2009a, b;Barakat et al. 2010;Bansi et al. 2014). ...
... Sinai Peninsula is characterized by an ecological uniqueness due to its diversity in landforms, geologic structures, and climate that resulted in a diversity of vegetation types, differentiated mainly by the sparseness and the dominance of shrubs and sub-shrubs and the dominance of trees (Abd EL-Wahab et al. 2006;Barakat et al. 2013). The flora of Sinai Peninsula is relatively rich and diverse, and the natural range is considered the basic source of animal feed improper stuff in many areas (Barakat et al. 2010). It is of 'Saharan type' (McGinnies 1968) linking Asia with Africa, and constitutes a transition between the Egyptian deserts and those of the Middle East. ...
Sinai Peninsula in Egypt is of special ecological interest because of its variable environment, landscape, distinctive flora. In the present study, 75 species were recorded, belonging to 65 genera and 29 families, and 90.7 % of these species are perennials. The most frequent life form was the chamaephytes (49.4 %) and the Saharo-Sindian taxa were the best represented ones (73.3 %). The classification of the 31 stands gave four communities: Nitraria retusa, Atriplex halimus, Cornulaca monacantha, and Retama raetam. According to the two-way indicator species analysis (TWINSPAN) classification, the ordination of stands showed that the groups A and B are markedly distinguishable, while the groups C and D are superimposed. Chlorides, sulfates, Na, Ca, Mg, K, calcium carbonate, and electrical conductivity are the community distribution controlling parameters. Results of this study demonstrated that the distribution of the plant communities and their composition over a small geographic area in desert ecosystems is related to heterogeneous topography and landform pattern. The heterogeneity of local topography, edaphic factors, and microclimatic conditions leads to variation of the distributional behavior of the plant associations of the study area.
... rventions. Many species are of economic importance in the arid regions playing a significant role in soil protection and sand dune stabilization against movement by wind or water. In addition, they provide a source of forage for animals, fuel and food for local inhabitants and have medicinal and potential industrial value (Laudadio et al., 2009a,b;Barakat et al,. 2010;Bansi et al., 2014). ...
... In fact hundreds of these taxa have been tested and have proven to have high potentials for the various industrial purposes. Among these plants we may mention, as example, the following (Barajat et al., 2010- chia, Atriplex, Avicennia, Medicago, Prosopis, Panicum, Pennisetum, Zilla, Suaeda, etc., Calotropis, Leptadenia, Thymelaea, Halopyrum, Imperata, etc. ...
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The Egyptian coastal and inland deserts cover more than 96 % of its total area. These deserts are characterized by the growth of a permanent framework of halophytic and xerophytic vegetation types in seven different habitats, namely: mangrove swamps, reed swamps, salt marshes, sand dunes, rocky ridges, desert wadis and mountains. The main communities forming these vegetation types are described with respect to their domination, floristic composition and geographical distribution in Egypt. The soil types of the Egyptian desert and the importance of remote sensing technology to prepare the vegetation map of the Egyptian deserts are also presented. The economic potentialities of some selected halophytes and xerophytes and their role in the agro-industrial sustainable development of the Egyptian deserts is also discussed.
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