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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Imprimir: 1521-9429
ISSN On-line: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v21.i2.40
pages 137-148

Microphytobenthos of the Red Sea Coast in the Area of Sharm-el-Sheikh (Egypt)

V. P. Gerasimiuk
Physical-Chemical Institute for Environment and Human Protection of the Ministry of Education and Science of Ukraine and NAS of Ukraine, 3 Preobrazhenskaya Str., Odessa 65082, Ukraine; Department of Botany, Odessa I.I. Mechnikov National University, 2 Dvorianskaya Str., Odessa 65026, Ukraine

RESUMO

The paper presents the results of a study of microphytobenthos of the Egyptian Red Sea coastal area near Sharm-el-Sheikh. Samples were collected in December 2014 and January 2015 from various substrates at a depth of 0.1-1.0 m at low tide. Substrates include thalli of algae-macrophytes (Gelidium crinale (Hare ex Turner) Gaillon, Phyllophora crispa (Hudson) P.S. Dixon, Cladophora lehmanniana (Lindenberg ) Kutzing), stones, corals, sandy and silt soils, submerged metal rails, and plastic bottles. A total of 96 species of microscopic algae were identified; they belong to 48 genera, 30 families, 20 orders, 4 classes, and 3 divisions. Diatoms (83 species) led in species number followed by cyanobacteria (11). The most diverse genera in terms of species composition are Nitzschia Hassall (8 species), Amphora Ehrenberg ex Kutzing and Cocconeis Ehrenberg (7 species each), Mastogloia Thwaites ex W.Smith (6), Licmophora C. Agardh (5), Halamphora Levkov (4), and Diploneis Ehrenberg ex Cleve (4). The algal flora of the studied area may be characterized as marine, alkaliphilic, and cosmopolitan with boreal, boreal-tropical, and tropical elements. The distribution of revealed algae by substrates was as follows: macrophytes (60 species), silts (36), sands (30), stones (10), metal rails (5), coral (16), and plastic bottles (1 species). Among species found, 22 taxa are first cited for the Red Sea: Anagnostidinema amphibium (C. Agardh ex Gomont) Strunecky et al., Calothrix nidulans Setchell et N.L. Gardner, Cymatosira belgica Grunow, Fragilaria gedanensis Witkowski, Licmophora communis (Heiberg) Grunow, L. paradoxa (Lyngbye) C. Agardh, Hyalosira delicatula var. gibbosa (Ostrup) Witkowski, Cocconeis schmidtii Cleve-Euler, Mastogloia pseudolatecostata T.A.Yohn et R.A. Gibson, Diploneis vacillans (A.W.F. Schmidt) Cleve, Navicula arenaria Donkin, N. gregaria Donkin, Gyrosigma fasciola (Ehrenberg) J.W.Griffith et Henfrey, Pleurosigma rigidum W.Smith, Stauroneis simulans (Donkin) R. Ross, Amphora laevis Gregory, Halamphora acutiuscula (Kutzing) Levkov, H. cuneata (Cleve) Levkov, Nitzschia ocellata Cleve, N. tubicola Grunow, Entomoneis alata (Ehrenberg) Ehrenberg, and E. punctulata (Grunow) K. Osada et H. Kobayasi.

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