We used Bacteriological studies to determine the quality of water, through quick methods, simple and sensitive detection of water contaminants, and in particularly bacteria that indicated the health status of water quality. We presented in this study
the effect of sewage on distribution nutrients and the Streptococci bacteria. Seven samples were taken during the period 2013 to 2014, at a rate of two cruises per season. Some of these samples were taken in near sewage stations, others, to make a comparison, were taken in distant ones. The study showed an increase in nutrients. These bacteria were linked to a positive relationship with nutrients because the presence of nutrients stimulated bacterial growth.
This environmental research was conducted on the coastal water of Tartous city for the first time to complement previous studies along the Syrian coast. Sampling station were selected based on their different environmental characteristics from each o
thers on one hand, and their continuous exposure to the sources of pollution (oil, chemical, organic) on the other hand. It hasbeen implemented13sortiesfreelyduring the study period, which lasted fromSeptember2013untilSeptember2014. during which water samples were collected for analysis and determine the concentration of nutrients in, as vital samples to study and determine the types of phytoplankton, which collected, in addition to conducting field measurements of some properties Physical seawater (temperature, pH, salinity, oxygen dissolved concentration). This study has recorded 160 species of phytoplankton in study sites, distributed as follows: 91 species of Chryssophyta, 50 of Pyrrophyta, 11 of Chlorophyta, and 8 of Cyanophyta, their distribution has differed from one site to another and from month to monthaccordingto the differentiation in the environmental conditions.
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.
To clarify the possibility of using bacterial flora as a pollution indicator,
water samples from river were collected and analyzed from July ١٩٩٩ to
February ٢٠٠١ for dissolved oxygen (DO), NO٣-N, NO٢-N, NH٤-N, PO٤-P,
suspended solids (SS), biolog
ical oxygen demand (BOD) Heterotrophic Bacteria
were identified to genus level, and another part of it was identified to
Enterobacteriaceae.
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.
