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Publication Type J
Authors El-Keblawy, A; Abdelfattah, MA; Khedr, AHA
Author Full Name El-Keblawy, Ali; Abdelfattah, Mahmoud A.; Khedr, Abdel-Hamid A.
Title Relationships between landforms, soil characteristics and dominant xerophytes in the hyper-arid northern United Arab Emirates
Source JOURNAL OF ARID ENVIRONMENTS
Language English
Document Type Article
Author Keywords Desert vegetation; Keystone species; Landscape; Multivariate analysis; Soil salinity
Keywords Plus ACACIA-TORTILIS; ECOLOGICAL PATTERNS; SPECIES-DIVERSITY; MOJAVE DESERT; SAUDI-ARABIA; NATIVE FLORA; VEGETATION; PLANT; WATER; TREES
Abstract Processes limiting the distribution and abundance of plants are directly linked to landform characteristics. The relationships between soil characteristics and dominant xerophytes were assessed in the major landforms in the hyper-arid deserts of the Northern Emirates (NE) of the United Arab Emirates, northeast of the Arabian Peninsula. Dominant and co-dominant perennial plants were recorded in a total of 1058 stands in 13 landforms. Soil texture, electrical conductivity (EC) and pH were assessed in each stand. Two methods of multivariate analysis (TWINSPAN and DCA) classified the landforms into four groups, each with specific indicator(s) species. Canonical Correspondence Analysis ordination showed positive correlations of the halo-xerophytic shrubs along a gradient of EC. Zygophyllum qatarense and Salsola drummondi showed the highest correlation with soil salinity. The psammophytic species Cyperus conglomeratus and the shrubby Calotropis procera and Calligonum comosum are correlated along gradients of high sand content, high pH, and low EC. Acacia tortilis is correlated with increasing silt and clay and it prefers soils with low EC. The grasses Penni setum divisum and Panicum turgidum are located around the middle of the soil texture, pH and EC gradients. The associations between A. tortilis and other species, e.g. C. comosum, Prosopis cineraria, and S. drummondi, were correlated along gradients of silt and clay. More perennials were associated with both the keystone trees A. tortilis and Prosopis juliflora, but the association was more for the first, compared to the latter species. (C) 2015 Elsevier Ltd. All rights reserved.
Author Address [El-Keblawy, Ali] Sharjah Univ, Fac Sci, Dept Appl Biol, Sharjah, U Arab Emirates; [El-Keblawy, Ali] Suez Canal Univ, Fac Educ, Dept Biol, Al Arish, Egypt; [Abdelfattah, Mahmoud A.] Fayoum Univ, Fac Agr, Soils & Water Dept, Al Fayyum, Egypt; [Khedr, Abdel-Hamid A.] Demiata Univ, Coll Sci, Dept Bot, Alexandria, Egypt
Reprint Address Abdelfattah, MA (reprint author), Fayoum Univ, Fac Agr, Soils & Water Dept, POB 63514, Al Fayyum, Egypt.
E-mail Address maa06@fayoum.edu.eg
ORCID Number Khedr, Abdel-Hamid/0000-0002-2270-8945
Funding Agency and Grant Number Environment Agency - Abu Dhabi; Ministry of Environment and Water
Funding Text The authors greatly acknowledge the Environment Agency - Abu Dhabi and the Ministry of Environment and Water for providing financial and logistic supports to undertake the Northern Emirates soil survey project, where this study was carried out in conjunction with. Special thanks to Dr. Colin Pain and Mr. Paul Smith for reviewing the manuscript.
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Cited Reference Count 70
Times Cited 3
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Publisher City LONDON
Publisher Address 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
ISSN 0140-1963
29-Character Source Abbreviation J ARID ENVIRON
ISO Source Abbreviation J. Arid. Environ.
Publication Date JUN
Year Published 2015
Volume 117
Beginning Page 28
Ending Page 36
Digital Object Identifier (DOI) 10.1016/j.jaridenv.2015.02.008
Page Count 9
Web of Science Category Ecology; Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number CE1GD
Unique Article Identifier WOS:000351559200004
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