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Register a new userBiodiversity and abundance of Planktonic Cnidaria (Siphonophorae ) in Lattakia Port
التركيب النوعي للقراصيات البلانكتونية (الأنبوبيات) و غزارتها في ميناء اللاذقية التجاري
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نعرض في هذا البحث دراسة أولية للقراصيات البلانكتونية (رتبة الإنبوبيات) في منطقة الميناء التجاري بمدينة اللاذقية خلال الفترة ما بين تشرين الثاني 2013 و حتى آب 2014. حُدد 9 أنواع من الأنبوبيات ظهرت معظمها خلال شهر شباط (2014) , نذكر منها الأنواع الأكثر سيطرة و هي: Eodoxoides spiralis يليه النوع Bassia bassensis, ثم النوع Chelophyes contorta و هو أحد الأنواع الأقل غزارة و يسجل لأول مرة في المياه الشاطئية السورية. سجلت الغزارة العظمى للقراصيات خلال شهر أيار حيث بلغ متوسط الغزارة 130 فرد/100 م3 شكلت الأنبوبيات حوالي 98% من هذه الغزارة و أقلها في شهر آب و كان 1 فرد/100 م3 , حيث سجلت أعلى غزارة للأنبوبيات في أيار (426 فرد/100م3 ) و ذلك في المحطة الثانية St2 . كانت المحطة الثانية St.2 (البعيدة عن مصادر التلوث) الأكثر تنوعاً و غزارةً بالأنبوبيات بين المحطات الأربعة المدروسة, بينما كانت المحطة الأولى St.1 (المعرضة مباشرة للتلوث) الأقل غزارةً و تنوعاً.
In this paper the preliminary study were conducted on the Cnidaria (Siphonophorae) in the Commercial port of Latakia city between November 2013 and August 2014. Nine species of Siphonophorae were identified, most of them listed during February 2014. The most abundant species are : Eodoxoides spiralis and Bassia bassensis ; Chelophyes contorta is the lowest abundance species and were recorded for the first time in Syrian costal water. The highest abundance of Cnidaria were recorded during May with average 130 ind./100m3 , 98% of this average belong to Siphonophorae , whereas the lowest abundance recorded at August (1 ind./ 100m3) , in May the highest abundance of Siphonophorae (426 individual / 100 m3) in the station St2 were recorded. The most diverse and abundance station was St.2 (Far off the pollution source ) , while the station St.1(Exposed to direct pollution) was least in abundance and diversity of siphonophorae.
References used
ABEL P.D. Evaluation the effect of pollution on natural marine ecosystems-Some outstanding problems of biological survelliance techniques.FAO Fish. Rep.352,1987,1-26
ALVARINO,A. Siphonophores of the Pacific with a review of the world distribution . Bull. Scripps Inst. Oceanogr., Univ. Calif. 1971, 16:1-432
ARAI, M. Interactions of fish and pelagic coelenterates. Can.J. Zool. 66, 1988,1913–1927
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