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Register a new userInvestigation of spatial & temporal variations of nutrient in the coastal Water of Banias city
دراسة التغيرات الزمانية و المكانية للشوارد المغذية في المياه الشاطئية لمدينة بانياس
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Tishreen University ورقة بحثية
Publication date
2017
fields
marine Chemistry
and research's language is
العربية
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Shamra Editor
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جمعت عينات مائية نصف فصلية خلال الفترة الممتدة بين آذار 2015 و شباط 2016 من أربع محطات مختلفة من المياه الشاطئية لمدينة بانياس و الخاضعة لتأثير مياه الصرف الصحي و مصبات الأنهار، حيث تم تحديد تراكيز الشوارد المغذية (H3SiO4-, PO4-3,NO3-,NO2-,NH4+) و تراكيز الكلوروفيل a لمعرفة مدى تأثرها بالتغيرات الزمانية و المكانية. سجلت أعلى التراكيز لشوارد الفوسفات و الأمونيا في المحطة St3 (مجاور للصرف الصحي) بينما سجلت أعلى التراكيز لشوارد النترات في المحطتين St1 و St2 (مصبات أنهار). أظهرت النتائج قيم مرتفعة للكلوروفيل a في نيسان (الذروة الربيعية للعوالق النباتية) و تشرين أول (الذروة الخريفية). تشير النسبة N/P∑ أن شوارد الفوسفور لعبت دور العامل المحدد لنمو العوالق النباتية في المحطتين St1 و St2 و أن شوارد الآزوت لعبت دور العامل المحدد للنمو في المحطتين St3 و St4، في حين أظهرت دراسة النسبة Si/∑N أن شوارد السيليكات عامل محدد لنمو المشطورات في جميع المحطات المدروسة.
Half quarterly water samples were collected during the period between March 2015 and February 2016 of four different stations from Banias city water that is subject to the effect of sewage and estuaries. The concentrations of nutrients (H3SiO4 -, PO4 -3, NO3 -, NO2 - , NH4 + ) and the concentrations of chlorophyll a were determined to find out how affected by the temporal and spatial variability. The highest concentrations of phosphate and ammonia ions were observed at station St3 (close to the sewage), while the highest concentrations of nitrate ions were registered at the stations St1 and St2 (estuaries). The results showed high values of chlorophyll a in April (due to spring bloom of phytoplankton) and October (autumn bloom). The ions ratio ΣN/P revealed that phosphorus ions are limiting factor of the phytoplankton growth at St1 and St2, and that nitrogen ions are limiting factor of growth at the stations St3 and St4. The ratio Si/ΣN revealed that silicate ions are limiting factor of the growth of diatoms in all the stations.
References used
ABI SAAB, M. A.; FAKHRI, M.; SADEK, E.; MATAR, N. An Estimate Of the Environmental Status of lebanese littoral waters using Nutrients and Chlorophyll-A as indicators. Lebanese Science Journal, Vol. 9, No. 1, 2008, 43-60
ARIN, L.; GUILLÉN, J.; SEGURA, M.; ESTRADA, M. Open sea hydrographic forcing of nutrient and phytoplankton dynamics in a Mediterranean coastal ecosystem. Estuarine, Coastal and Shelf Science, Spain, vol.33, 2013, 116-128
BALLS, P. W. Nutrient inputs to estuaries from nine Scottish East Coast rivers: influence of estuarine processes on inputs to the North Sea. Estuarine Coastal Shelf Sci, 39, 1994, 329 – 352
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values.
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sea)
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associated with increasing concentrations of each of the total inorganic carbon
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tech
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