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Diversity of juvenile fish assemblages in the pelagic waters of Lebanon (eastern Mediterranean)
Bariche, M.; Sadek, R.; Al-Zein, M.S.; El-Fadel, M. (2007). Diversity of juvenile fish assemblages in the pelagic waters of Lebanon (eastern Mediterranean), in: Relini, G. et al. Biodiversity in enclosed seas and artificial marine habitats: Proceedings of the 39th European Marine Biology Symposium, held in Genoa, Italy, 21-24 July 2004. Developments in Hydrobiology, 193: pp. 109-115. https://dx.doi.org/10.1007/978-1-4020-6156-1_9
In: Relini, G.; Ryland, J. (Ed.) (2007). Biodiversity in enclosed seas and artificial marine habitats: Proceedings of the 39th European Marine Biology Symposium, held in Genoa, Italy, 21-24 July 2004. Developments in Hydrobiology, 193. European Marine Biology Symposia, 39. ISBN 978-1-4020-6155-4; e-ISBN 978-1-4020-6156-1. VII, 271 pp. https://dx.doi.org/10.1007/978-1-4020-6156-1, meer
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, meer
Is gerelateerd aan:
Bariche, M.; Sadek, R.; Al-Zein, M.S.; El-Fadel, M. (2007). Diversity of juvenile fish assemblages in the pelagic waters of Lebanon (eastern Mediterranean). Hydrobiologia 580(1): 109-115. https://dx.doi.org/10.1007/s10750-006-0461-0, meer

Beschikbaar in  Auteurs 
Documenttype: Congresbijdrage

Trefwoorden
    Biodiversity
    Developmental stages > Juveniles
    Environments > Aquatic environment > Pelagic environment
    Fishes
    Taxa > Species > Introduced species
    MED, Lebanon [Marine Regions]
    Marien/Kust
Author keywords
    Lessepsian migration; biodiversity; pelagic fish; eastern Mediterranean;Lebanon

Auteurs  Top 
  • Bariche, M.
  • Sadek, R.
  • Al-Zein, M.S.
  • El-Fadel, M.

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.

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