Vegetation of the urban habitats in the Nile Delta region, Egypt

Abstract

The present study aims at identifying the plant communities of the urban habitats in the Nile Delta region, Egypt. Four hundred and five stands were selected to represent the variation in eight major types of habitat recognized in the study area. Twenty-five vegetation groups were recognized after application of TWINSPAN. Their ordination using DECORANA indicates moisture, pH, fertility and texture gradients; the hygronitrophilous communities (the moist and fertile stands) inhabit the wet refuse areas (Echinochloa stagnina-Eichhornia crassipes group), mesonitrophilous communities inhabit the dry refuse areas, motor roads and railways (Pluchea dioscoridis, Cynodon dactylon, Panicum repens and Phragmites australis groups), mesic-dry subnitrophilous communities occur on sandy soils (Hordeum murinum, Alhagi graecorum and Desmostachia bipinnata groups) and the dry thermophilous communities of new anthropogenic habitats with coarser texture of sandy and infertile soil along the railways and motor roads at the borders of the Nile Delta (Zygophyllum album and Cornulaca monacantha groups). These results suggest that urban vegetation in the Nile Delta region is favored where disturbance, nutrient and water resources are more abundant.