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Register a new userدراسة توزع العوالق النباتية تحت تأثير بعض العوامل البيئية في شاطئ مدينة اللاذقية
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Damascus University ورقة بحثية
Publication date
1999
fields
Biology
and research's language is
العربية
Authors
نديم حمود( باحث )
Created by
Shamra Editor
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أستعرض خلال هذا البحث توزع العوالق النباتية في أربع محطات أوقيانوغرافية شاطئية مختلفة بصفاتها البيئية، واقعة بالقرب من مدينة اللاذقية، مع دراسة أهم الخصائص الهيدروكيميائية للمياه المدروسة. كما حددت ١٠٨ أنواع من العوالق النباتية، وزعت على مجموعتين رئيستين كما يلي: ٦١ نوعًا من المشطورات و ٤١ نوعًا من السوطيات النباتية و ٦ أنواع من زمر أخرى.
No English abstract
References used
Andersen V., P. Nival & R.P.Harris; ١٩٨٧– Moddelling of a planctonic ecosystem in an enclosed water column. J. Mar.Biol. Ass. U. K
Fresnel J. (١٩٨٦). Nouvelles observations sur une coccolithacee rare: Crusiplacolithus neohelis. Protistologica
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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.
This research aims to study the distribution of Phytoplankton in four locations which have different environmental specifications, in addition to study some environmental factors of Alhaffeh Dam water that affect the distribution of the phytoplankt
on (Temperature ,BOD, DO, pH, NO3, NO2, NH4, PO4). Samples were collected from different locations of the Dam basin from June 2011 to May 2012 once or twice a month. (84) species of Phytoplankton were identified and were distributed as: (38) species of Chrysophyta, (36) species of Diatomophyceae, (2) species of Chrysophycea, (25) species of Chlorophyta, (20) species of Cyanophyta, (2) species of Pyrrhophyta, and (5) species of Euglenophyta. The results show apparent changes in physical and chemical properties of water during this study. This is the first study of the phytoplankton on the water of Alhaffeh Dam.
This study dealt with the determination of hydrogen sulfide concentrations in the sediments and water of sewage points on the beach of Lattakia city - the southern Corniche region, which witnesses a clear flow of sewage water and the effect of bacter
ia on the emission of hydrogen sulfide (H2S) of high toxicity to the water medium and from it to the air and seasonal changes. These emissions and the role of hydrological factors such as salinity, acidity and temperature in this process.
نفذ العمل المخبري في مخابر مركز بحوث ودراسات المكافحة الحيوية كلية الزراعة - جامعة دمشق . ونفذ العمل الحقلي في مزرعة أبو جرش في كلية الزراعة ومزرعة مركز بحوث ودراسات المكافحة الحيوية .
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