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Publication Type J
Authors Serag, MS; Khedr, AHA
Author Full Name Serag, MS; Khedr, AHA
Title Vegetation-environment relationships along El-Salam Canal, Egypt
Source ENVIRONMETRICS
Language English
Document Type Article
Author Keywords canals; ecological relations; macrophytes; multivariate analysis
Keywords Plus CANONICAL CORRESPONDENCE-ANALYSIS; SPECIES RICHNESS; NILE DELTA; BIOMASS
Abstract The bank and open water vegetation along El-Salam Canal in north-eastern Egypt were studied in relation to the prevailing environmental factors. The hypothesis that terrestrial and aquatic species would show different downstream patterns of species richness was tested by sampling species composition and environmental variables along 80 km of the canal. Species richness was highest in the first 30 km of the canal. The downstream decrease in species richness exhibits interpretable downstream patterns. Total species richness increased with increasing organic matter in the soil and decreased with both increasing soil and water salinity along the gradient. The indicator species of TWINSPAN analysis are: Azolla filiculoides, Echinochloa stagnina, Eichhornia crassipes and Saccharum spontaneum (cluster I); Ceratophyllum demersum. Ludwigia stolonifera and Typha domingensis (cluster II); Potamogeton pectinatus and Phragmites australis (cluster III); Tamarix nilotica and Suaeda vera (cluster IV). The environmental factors influencing the vegetation clusters were analysed using canonical correspondence analysis ordination (CCA). The water salinity total nitrogen and total phosphorus appeared to be the most important factors controlling the abundance of aquatic plant distribution along the canal. The shoreline vegetation is mainly controlled by salinity, K+ and organic carbon of the soil. Water analysis indicated that the salinity of the water increases southwards and the minimum salinity of the water (0.78 mS/cm) was recorded at the intake of the canal. The maximum value (7.5 mS/cm) of water salinity was recorded near the Suez Canal. Copyright (C) 2001 John Wiley & Sons, Ltd.
Author Address Mansoura Univ, Fac Sci Damietta, Dept Bot, New Damietta, Egypt
Reprint Address Serag, MS (reprint author), Mansoura Univ, Fac Sci Damietta, Dept Bot, POB 34517 54, New Damietta, Egypt.
ORCID Number Khedr, Abdel-Hamid/0000-0002-2270-8945
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Cited Reference Count 41
Times Cited 7
Total Times Cited Count (WoS, BCI, and CSCD) 9
Publisher JOHN WILEY & SONS LTD
Publisher City W SUSSEX
Publisher Address BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND
ISSN 1180-4009
29-Character Source Abbreviation ENVIRONMETRICS
ISO Source Abbreviation Environmetrics
Publication Date MAY
Year Published 2001
Volume 12
Issue 3
Beginning Page 219
Ending Page 232
Digital Object Identifier (DOI) 10.1002/env.458
Page Count 14
Web of Science Category Environmental Sciences; Mathematics, Interdisciplinary Applications; Statistics & Probability
Subject Category Environmental Sciences & Ecology; Mathematics
Document Delivery Number 428RM
Unique Article Identifier WOS:000168474500002
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