Subscribe to the gold package and get unlimited access to Shamra Academy
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
1527
0 22
0.0
(
0
)
Added by
Tishreen University ورقة بحثية
Publication date
2017
fields
marine Chemistry
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
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
rate research
Read More
This research focuses on identifying spatial and temporal variationsof the carbon
dioxide system in the surface seawater of Tartouscityduring the period betweenspring and
summer 2015.In Addition to the extent influenced by some hydrological propert
ies of
water (temperature and salinity) and the impact all of this on the pH of marine water
values.
The results showed low partial pressure of the carbon dioxide in seawaters (PCO2
sea)
in the summercompared with spring, which is reflected on the air-sea flux values (FCO2),
where CO2 released from surface seawater to the air in summer and incontradiction of that
in the spring (0.0632mmol /m²/ day and -0.0715 mmol /m²/day, respectively). In spring,
low temperature and salinity of the water (22.707-22.727C and 37.605-37.765‰
respectively), in addition to increased biological activity contributed in increasing the
absorption of CO2 from the water.These leading to a decrease PCO2
sea (409.0- 429.5μatm)
associated with low concentrations of all of the total inorganic carbon (2229.5-
2242.5μmol/kg) and total alkalinity (2588.873-2590.9μmol/kg). and as a result the surface
sea waters become a reservoir of dioxide carbon atmospheric.
In the summer, the rise in temperature and salinity of surface seawater (28.85-
29.60Cand38.15-38.60‰, respectively) and reduced biological activity all contributed to
the decrease dissolved CO2 values and increase of PCO2
sea(437.5 - 453.5μatm)
associated with increasing concentrations of each of the total inorganic carbon
(2267.9 - 2296.0μmol/kg) and total alkalinity (2739.6 -2741.2μmol/kg).In this way the
surface sea water is source of carbon dioxide to the atmosphere.
In this paper, the seasonal variations of CO2 system and pH
values in surface seawater of Banias city are shown during the
period in spring 2015 and winter 2016, in addition to determine the
impact of hydrological factors.
This paper Introduces a clear idea about marine and coastal
biodiversity of crustacean zooplankton and its quantitative and
qualitative monthly variations and its relationship with the changes
of some of the main environmental factors such as temperature,
salinity,dissolved oxygen, transparency and pH.
This research focuses on determining elemental concentrations of copper and lead
(Cu &pb) in the muscles and liver Boops boops kind of the estuary of the AL Kabeer
Alshemaly River and the fishing port and the promenade using atomic absorption
tech
nique.
The results showed a significant increase in the concentrations of lead during
summer 2014 in each of the muscle tissue and the liver of the fish examined (28.28ppm&
4.48ppm, respectively) at the mouth of the estuary of the AL Kabeer Alshemaly River and
the fishing port and the promenade (11.19ppm& 3.75ppm, respectively), and this could be
due to the different nature of human activities and sources of pollution to this element
between the two regions.
The results showed a marked seasonal change in the concentration of copper within
the liver tissue of fish studied, where the highest concentration in the fishing port and the
promenade( 5630.02 ppm) in autumn 2014, the Supreme( 3402.27ppm) value in the AL
Kabeer Alshemaly River the estuary of summer. While the results did not show the
variable in concentrations of copper in muscle . Theconcentrations were comparable
between the two stations somewhat, with the highest concentrations in the summer in
Bouth the fishing port and the promenade 1497.70ppm) and(1107.91 ppm) the AL Kabeer
Alshemaly River.
Results indicate that the accumulation of the studied elements (Cu &pb) in the liver
compared to muscle (and the reason is boiled physiological differences in the functions of
each of the two members) and to the existence of a good correlation between the
concentration in the muscle changes with the typical length of which points to increased
accumulation of these elements in these fish with increased growth,Noting the high
concentration of the studied elements in females more than those recorded in males.
According to the chemical pollution danger in general and its danger on groundwater
wells in agricultural areas particularly the inhabited ones , the scientific study was
implemented to determine the concentrations of some ions in water wells withi
n the area of
Hraesoon; In addition to, monitoring their changing values which indicate the rate of
chemical pollution in the study area due to existing activities.
The search involves a monthly periodic physical and chemical analyzes in the
invested wells in Hraesoon area , Banias city for a whole year. starting from September
2011 till August 2012 by choosing ten invested wells disterbuted in the area.
The study includes the changing of temperature ,pH, electrical conductivity, and the
group of negative ions (nitrate NO3
-, phosphate PO4
3-, sulphates SO4
2-, chloride Cl-) in
addition to positive ions (ammonium NH4 +, Sodium Na +).
The values of the studied ions have demonstrated a clear disparity in each month for
the samples taken from the same wells, due to the agricultural ,human activities and
climatic conditions that prevailed during the sampling dates.
The recorded results show cases of chemical contamination in the water wells
studied not identical the Syrian standard for drinking water (2011-2012) portend a lot of
health and environmental risks, especially that many of those wells are used for drinking
purposes.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
