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Register a new userEcological study of Patella caerula in the Lattakia shore
دراسة بيئيّة لبطنيّ القدم Patella caerulea على شاطئ مدينة اللاّذقيّة
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تناول البحث دراسة توزع أفراد النوع Patella caerulea في أربعة مواقع من شاطئ مدينة اللاذقية، تختلف عن بعضها بعضاً تبعاً لطبيعة المستند القاعي ولدرجة تعرضها لمصادر التلوث، وهي مناطق: أفاميا (A) وابن هاني (B) ومرفأ الصّيد في برج إسلام (C) والشّاطئ الرملي في برج إسلام (D). تمّت هذه الدّراسة من الفترة الممتدة من شهر كانون الثّاني 2012 وحتى شهر كانون الثّاني.2013 جمعت العينات يدوياَ من المنطقة فوق الشّاطئية Supralittoral والشّاطئية Littoral وتحت الشّاطئية Sublittoral حتى عمق مترين، أظهرت نتائج هذه الدّراسة الآتي : 1 - تعدُّ المنطقة A أكثر المناطق المدروسة ملائمة لنمو أفراد النوع Patella caerulea وتكاثرها إذ سجلت فيها القيمة العليا للكتلة الأحيائية وبلغت (3990.2 gr/m²) وعدد الأفراد (2128 ind/m²). 2 - سجلت في المنطقة C القيمة الدنيا للكتلة الإحيائية(2872.47 gr/m² ) وعدد الأفراد ind/m² (1632) 3 - يعدّ نوع Patella caerulea من الأنواع الواسعة في مجال التكيف البيئيEurybiont ، إذ وجد في جميع مواقع الدّراسة . 4 – أمَّ النوع Patella caerulea فيعدُّ من الأنواع المهمّة اقتصادياً
This research is a study of distribution of Patella caerulea in four locations of the Latakia shore different from each other by Substrate nature and their exposure to pollution sources. They are as follow : Afamia (A),Ibn Hani (B) ,harbor fishing of Tower Islam (C), and the sandy beach of Tower Islam (D). This study was achieved between January 2012 and January 2013 ,The samples were collected manually from the Supralittoral , Littoral and Sublittoral region(depth of two meters).The results of this study showed the following: 1 – The area A is the most suitable for the growth and reproduction of the Patella caerulea, which recorded the highest value of biomass reaching ( 3990.2 gr / m²), and the number of individuals (2128 ind /m²) . 2 - The area C recorded the lowest value of biomass (2872.47 gr/ m²) and the number of individuals (1632 ind / m²). 3 - Patella caerulea is consederied a Eurybiont as it was found in all the study areas . 4 - Patella caerulea is comercially important species .
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Research summary
تتناول هذه الدراسة التوزيع البيئي لنوع من بطنيات القدم البحرية المعروف بـ Patella caerulea في أربعة مواقع مختلفة على شاطئ مدينة اللاذقية. تمت الدراسة بين يناير 2012 ويناير 2013، حيث جمعت العينات يدوياً من المناطق فوق الشاطئية والشاطئية وتحت الشاطئية حتى عمق مترين. أظهرت النتائج أن المنطقة A كانت الأكثر ملائمة لنمو وتكاثر هذا النوع، حيث سجلت أعلى قيمة للكتلة الأحيائية وعدد الأفراد. بينما سجلت المنطقة C أدنى قيمة للكتلة الأحيائية وعدد الأفراد. كما تبين أن Patella caerulea نوع واسع التكيف البيئي ومهم اقتصادياً. تضمنت الدراسة أيضاً قياس بعض العوامل اللاحيوية مثل درجة الحرارة، تركيز الأكسجين المنحل، درجة الحموضة، والملوحة.
Questions related to the research
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ما هي المواقع الأربعة التي تمت دراسة توزيع Patella caerulea فيها؟
المواقع الأربعة هي أفاميا (A)، ابن هاني (B)، مرفأ الصيد في برج إسلام (C)، والشاطئ الرملي في برج إسلام (D).
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ما هي العوامل اللاحيوية التي تم قياسها في الدراسة؟
العوامل اللاحيوية التي تم قياسها تشمل درجة الحرارة، تركيز الأكسجين المنحل، درجة الحموضة، والملوحة.
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ما هي المنطقة التي سجلت أعلى قيمة للكتلة الأحيائية وعدد الأفراد؟
المنطقة A سجلت أعلى قيمة للكتلة الأحيائية وعدد الأفراد.
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ما هو الهدف الرئيسي من هذه الدراسة؟
الهدف الرئيسي هو دراسة التوزيع البيئي لنوع Patella caerulea ومعرفة تأثير العوامل البيئية والملوثات العضوية على توزيعه.
References used
DOWIDER, N.M; HASSAN, K.A., Notes on the Bivalvia and Gastropoda Fauna in the rigion of Abu-Qir Bay. Alexandria Rapp Comm int mer medit . 22 (2). 1973.71- 72
GAILARD,J.M.. Mediterranee et Mer Noire- Zonede peche 37. Vol 1,FAO& CEE, Rome, 1987
GOSSELCK ,F;SPITTLER ,P; YACIN-KASSAB,M..Some Gastropoda and Bialvia of the syrian Mediterranean Coast.Wissnschaftliche Zeitschrift Der wilhelm-Pieck- Universitat Rostock-35.Jahrgang. 1986.96-99
GOTHEL , H.. Fauna Marina Del Mediterraneo . Edicones Omega , S.A ,Barcelona ,1994
PARENZAN,P.. Carta d,identita delle conchiglie del Mediterraneo. Vol 1 Gastropodi, Ed . Bios Taras-Taranto , Italy, 1970
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