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Vegetation‐environment relations along water courses in the Nile Delta region
Author(s) -
Shaltout K. H.,
ElSheikh M. A.
Publication year - 1993
Publication title -
journal of vegetation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 115
eISSN - 1654-1103
pISSN - 1100-9233
DOI - 10.2307/3236085
Subject(s) - phragmites , imperata , vegetation (pathology) , cynodon dactylon , ordination , ecology , environmental science , panicum , biology , agronomy , wetland , medicine , pathology
The present study analyses the vegetation of canals and drains in the Nile Delta in relation to environmental factors. 30 clusters were generated by the TWINSPAN technique. A DC A (DECORANA) ordination revealed a moisture gradient, and, less clearly, a salinity and a fertility gradient. The resultant clusters were assigned to seven vegetation types arranged according to moisture preference as follows: Imperata cylindrica ‐ Desmostachya bipinnata, Phragmites australis, Panicum repens ‐ Cynodon dactylon, Echinochloa stagninum ‐ Polygonum salicifolium, Echinochloa stagninum, Eichhornia crassipes , and Ceratophyllum demersum‐Pótame geton crispas. Their species diversity is discussed in view of the disturbance and heterogeneity hypotheses.