NDLI: Diversity of juvenile fish assemblages in the pelagic waters of Lebanon (eastern Mediterranean)

Content Provider	Springer Nature Link
Author	Bariche, M. Sadek, R. Al Zein, M. S. El Fadel, M.
Copyright Year	2007
Abstract	The opening of the Suez Canal resulted in the introduction of Indo-Pacific organisms (Lessepsian) to the eastern Mediterranean. Available information on the Levantine ichthyofauna concerns mainly necto-benthic species, while pelagic ones remain mostly uncharacterized. This paper presents a preliminary assessment of biodiversity and its temporal changes on the Lebanese coast (eastern Mediterranean) using species composition and abundance of pelagic communities as indicators. For this purpose, a total of 11,192 fishes, representing 32 species and 19 families were collected with purse seines. Lessepsian species represented 40.9% of the species number in the purse-seine catches but only 0.48% in abundance of individuals and 1.57% in biomass. The families most represented in terms of abundance were the Clupeidae (49.28%), the Engraulidae (41.69%) and the Scombridae (7.01%); in terms of biomass these families represented 56.76, 22.04 and 9.72%, respectively. Abundance and biomass exhibited clear temporal fluctuations with Sardina pilchardus and Scomber japonicus dominating the catches between May and June, and then replaced by Sardinella aurita in July and Engraulis encrasicolus in August. The highest values of species richness (12 species) and diversity indices (H′ = 1.37; D = 0.71) were recorded in the last two weeks of June while the lowest values (5 species, H′ = 0.26; D = 0.11) were recorded in early August. While Lessepsian fishes represented a minor part in terms of landings, they contributed considerably to the diversity of pelagic fish assemblages in Lebanese waters.
Starting Page	109
Ending Page	115
Page Count	7
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	580
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2007-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lessepsian migration Biodiversity Pelagic fish Eastern Mediterranean Lebanon Hydrobiology Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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