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Register a new userHorizontalland VerticalDistribution ofChlorophyll phaeophytine and Bacteriain The Natural Borg Islam During Spring and Summar
التوزع الأفقي و العمودي للأصبغة اليخضورية و السمراوية و البكتيريا في منظومة برج إسلام البيئية خلال فترتي الربيع و الصيف
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Tishreen University ورقة بحثية
Publication date
2015
fields
Biology
and research's language is
العربية
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Shamra Editor
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تعطي دراسة التعداد العام للبكتيريا، و الأصبغة اليخضورية صورة أولية عن سلامة البيئة المدروسة، و المخزون الحيوي الأولي للنظام البيئي البحري الذي تشكل أحد مكوناته الأساسية. نعرض في هذا البحث أهم النتائج المتعلقة بالتغيرات الأفقية و العمودية للحرارة، و التعداد العام للبكتيريا، و تراكيز الأصبغة اليخضورية و السمراوية، و العلاقات المتبادلة بينها و ذلك حتى عمق300 م. أظهرت الدراسة ارتفاع درجة حرارة المياه العميقة بمقدار درجتين مئويتين تقريباً خلال العقود الأخيرة، إضافة إلى انخفاض كبير في التعداد العام للبكتيريا (800 – 12750CFU/100 ml)، و الأصبغة اليخضورية (تحت عتبة الكشف –0.24 ملغ/ل) و السمراوية (تحت عتبة الكشف –0.064 ملغ/ل)، و الذي يشير إلى ضعف في الروافد البرية و انخفاض في المغذيات الواصلة إلى الشواطئ البحرية، و ماله من تأثيرات سلبية في البيئة البحرية المدروسة.
general study of counted Bacteria and Chlorophyll a Give us an initial picture to the environment safety and vitality of marine environmental, which constitutes one of the basic components. In this paper, we show the most important results related to horizontal and vertical changes of temperature and counted Bacteria, the concentrations of dyes Chlorophyll a,phaeophytine and relationships between them to depth of 300 m. The study showed a high degree in deep-water temperature reached to about two degrees in recent decades. as well as significant decrease in counted Bacteria (800 - 12750CFU / 100 ml) and dyes Chlorophyll a (under detection threshold - 0.24 mg / l) and phaeophytine (under the detection threshold - 0.064 mg / l), which refers to the weakness in the wild tributaries and low nutrients that reaches to the beaches and marine wealth , which reflect the negative impacts on marine environment.
References used
ALONSO-S.L, GASOL JM., LEFORT T., HOFER J., SOMMARUGA R. Effect of natural sunlight on bacterial activity and differential sensitivity of natural bacterioplankton groups in Northwestern Mediterranean coastal waters. Appl Environ Microbiol,2006,72:5806–5813
APHA. Standard Methods for the Examination of Water and Wastewater. 20th edn. American Public Health Association. 1998, Washington D.C
AZAM F. Microbial Control Of Oceanic Carbon. The Plot Thickens. Science1998, 280:694–696
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