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Register a new userA Study of Phytoplankton Distribution in Al-Kabir Al-Shamali River Connected with Nutrients (NO3 -- NO2 -- NH4 +-PO4 ---) Concentration Changes
دراسة توزع العوالق النباتية في نهر الكبير الشمالي ارتباطاً بتغيرات تراكيز المغذيات ( ---PO4 - +NH4 --NO2 --NO3)
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Tishreen University ورقة بحثية
Publication date
2013
fields
Biology
and research's language is
العربية
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Shamra Editor
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أجريت هذه الدراسة خلال الفترة (2010 – 2011) و استمرت 12 شهراً حددنا خلالها 110 نوعاً من العوالق النباتية في نهر الكبير الشمالي تضمنت 4 أنواع من الأوغلينات، 15 نوعاً من الطحالب الزرقاء، 49 نوعاً من الطحالب الذهبية، 40 نوعاً من الطحالب الخضراء و نوعين من الطحالب النارية. كما قمنا بدراسة بعض القياسات الفيزيائية و الكيميائية للمياه منها درجة الحرارة حيث تراوحت ما بين (10.8 – 28 ْم) و درجة الحموضة pH (7.76-8.2)، و المتطلب الأوكسجيني الحيوي BOD ما بين (1.6 – 10 مغ/لتر )، في حين تراوحت تراكيز شوارد النترات NO3- ما بين (1.10-250 مغ/لتر)، و شوارد النتريت ما بين (0.01 – 0.13 مغ/لتر)، و شوارد الفوسفات PO4- ما بين (0.015-1.05 مغ/لتر) ، في حين بلغت أعلى قيمة لشوارد الأمونيوم 6.24 مغ/لتر و أدناها 0.011 مغ/لتر، و تراوحت تراكيز الأوكسجين المنحل (DO) مابين (6.06 – 12.07 مغ/لتر).
This study was carried out during the period 2011–2010 for 12 months. 110 species of phytoplankton in Al-Kabir Al-Shamali River were identified including 4 species of Euglenophyta, 15 species of Cyanophyta, 49 species of Chrysophyta, 40 species of Chlorophyta and 2 species of Pyrrophyta. Some physicochemical parameters of water were determined. Some of them were the temperature which ranged between 10.8–28°C, the pH 7.76–8.2 and the BOD 1.6–10mg/l, while the concentrations of NO3 - ranged between 1.10-250 mg/l, nitrate 0.13-0.01mg/l, and PO4 - ions 0.015–1.05 mg/l. The highest value of ammonium ions was 6.25mg/l and the lowest was 0.011 mg/l. BOD concentrations ranged between 6.06-12.07mg/l.
References used
American public Health Association (APHA) 1985 – Standard Methods for Examination of water and wast water, 16 th edition, U.S.A,1985
Best, G. A., M.R.I.C., PH.D. AND Ross, S.I., I.R.I.C., m.S., A.M.I.W.P.C., M.I.E.S– River pollution studies, Fiirst published, Liversity Press. 1977
BOURRELLY , P. Les Algue d’eau donce . les algus jaunes et brunes . ed. Boubee, Paris , 1968 , 38 p
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The study, has Focused on determination of the most important hydrochemical
characteristics of water at AL-kabir alshemali estuary area by determination the
concentration of nutrient ions (nitrate, nitrite, ammonia, phosphates and silicates) and th
e
factors affecting them. Water samples were collected from several stations of that area
between March 2017 and January 2018.
The highest concentrations of nutrient throughout the year were reported at river estuary
point (K0), a depression in their concentrations was observed in the station distanced
away from the river estuary point, compatible with salinity gradient. River estuary point
(K0) formed the main source of nutrients that are distributed to other stations.
Nutrient concentrations showed clear gradual depression in winter down to more than
1,000 meters from the estuary point, while the gradient in summer has less extension, It
was within the first 50 meters in some monthes.
Study of the general characteristics of Fractures in the central part of
the AL-Kabir AL- Shimali river basin showed the presence of
several main groups of Fractures with directions NE-SW _ NNESSW,
NW-SE , E-W.and showed increased fracture rate in
the
northern and southern parts of the study area, and that the spacing
between the Fractures close to the medium convergence (5-34) cm ,
also show a aperture ranged between (0.1-5.1) cm, where aperture
width was increased in southwest of Lake 16 October near Lattakia-
Kless fault .
This study deals with spatial and temporal distributions of organic and inorganic
phosphorus in sedimentary columns from Al-Kabir Al-Shimaliand Al-Hussain estuaries,
during the period March 2013- February 2014.
Organic phosphorus concentrations ra
nged between (2.0 - 207.6) μg/gin sediments
from Al-Kabir Al-Shimali estuary, and from (1.7 –130.9) μg/gin sediments from
Al-Hussainestuary. Sediment content from inorganic phosphorus ranged between
(12.4 – 371.2)μg / g at sediments from Al-Kabir Al-Shimali estuary, and from
(2.0 - 242.6)μg /g at Al-Hussain estuary. Granular composition of sediments did not play
a significant role in the temporal and spatial distributions of organic and inorganic
phosphorus.
In general, organic and inorganic phosphorus concentrations decreased gradually
from winter to summer, and from surface layers of the sedimentary column towards the
deeper layers.
The ratiobetween inorganic and organic phosphorus increasedfrom river into marine
sediments. In addition, this ratio increased gradually as the sedimentdepthincreased, and
was high in winter and low in summer.
The aim of this research is to identified the tectonic evolution of
Naher Al-Kabir Al-Shimaly Basin from tectonic subsidence curve
witch calculated from Lattakia1 well data. Tectonic subsidence
was identified in lower-middle Jurassic en relation o
f opening of
East Mediterranean basin. A subsidence is occurred in
Cenomaniane, after a stage of uplift in late Jurassic-lower
Cretaceous en relation to fold and erosion known at regional
scale.
Al-Kabeer Al-Shemale river rises from Aqraa Mountain and coastal mountains, it is considered one of the largest rivers in the coastal area.Its catchment area is 1097 km2, and empties into the sea to the southern of Lattakia.The study aims to determin
e the impact of climate change on the river discharge. Since the rainfall is the major factor in the runoff formation in the river catchment, the rainfall changes have been studied in climatic stations located within the catchment and its surroundings, and for a period of time exceeding thirty years. The study found that the general trend of rainfall change and runoff with time is decreasing, declining rainfall values ranged in the studied stations between (0.4-12.5) mm per year, and the runoff reached 0.08m3/s in the year. A mathematical equation, predict river discharge after knowing the values of daily precipitation, has been concluded.
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