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Soil‐vegetation relationship and distribution of Convolvulus in Egypt
Author(s) -
ElKhatib A. A.,
AbdelGhaney M. M.,
ElSayed K. N.
Publication year - 1998
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19981090119
Subject(s) - edaphic , ordination , convolvulus , canonical correspondence analysis , dominance (genetics) , ecology , habitat , vegetation (pathology) , geography , detrended correspondence analysis , indicator species , biology , soil water , weed , medicine , biochemistry , pathology , gene
Abstract Vegetation and soil were sampled in 74 stands representing habitat in the different phytogeographical regions of Egypt where Convolvulus species were recorded. Two Way Indicator Species Analysis (TWINSPAN) classified the vegetation into six groups. Each of them occupied a distinct type of habitats. Convolvulus species are assigned as indicator species for most of these groups. However, none of these species can be considered as a leading dominant in the surveyed stands. Certain species may exert a local dominance/co‐dominance, or may be distinctly more important in a group of stands. Ordination of stands based on cover‐abundance value of species and effects of edaphic factors on the spatial distribution of plants were investigated in the biplot of Detrended Canonical Correspondence Analysis (DCCA). Distribution of Convolvulus species was found to be highly correlated with edaphic factors. Among them, CaCO 3 , moisture content, SO 4 and soil texture have significant effect on the distribution pattern.