اثر تجمع فیتوپلانکتون‌ها بر کیفیت آب سد کرج

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار گروه علوم محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران

2 استاد گروه مدیریت محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران

3 کارشناس ارشد مدیریت محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران

چکیده

فیتوپلانکتون‌ها اهمیت زیادی در کنترل وضعیت اکو سیستم‌های آب دارند. هدف از این مطالعه، بررسی وجود رابطه بین تراکم فیتوپلانکتون‌ها و مواد مغذی به‌ویژه نیترات و فسفات و سایر عوامل مؤثر بود. بر این اساس، دریاچه سد کرج به‌عنوان مطالعه موردی در نظر گرفته شد. به این منظور، یک سال نمونه‌برداری از دریاچه سد کرج صورت گرفت و عوامل فیزیکی، شیمیایی و بیولوژیکی آن اندازه‌گیری شدند. میزان نفوذ نور خورشید در عمق آب، با استفاده از دیسک سشی اندازه‌گیری شد. در این مطالعه مشخص گردید که دریاچه سد کرج دارای لایه‌بندی حرارتی است. این دریاچه در ماههای گرم سال دارای تراکم زیست توده جلبکی بوده و همچنین تعداد فیتوپلانکتون‌ها با افزایش عمق تغییر می‌یابند. بیشترین تعداد فیتوپلانکتون در سال 1389 مربوط به دیاتومه به‌ویژه سیکلوتلا بود. بررسی تعداد فیتوپلانکتون‌ها با عوامل شیمیایی نشان داد ارتباطی بین کاهش و افزایش میزان آنها و تعداد فیتوپلانکتون‌ها وجود ندارد.

کلیدواژه‌ها


عنوان مقاله [English]

Phytoplankton Assembly Effect in Karaj Reservoir Water Quality

نویسندگان [English]

  • Seyyed Masoud Monavvari 1
  • Jafar Noori 2
  • nooshin Sohrabnia 3
چکیده [English]

Phytoplankton plays a major role in monitoring aquatic ecosystems. The purpose of this study was to investigate the relationship between the density of phytoplankton and the nutrients, especially nitrates and phosphates and other effective parameters in Karaj dam as a case study. For this purpose, in 2010, Karaj dam was sampled during a year and physical, chemical and biological factors were measured. The penetration depth of sunlight into the water, was measured using Sechei disk. The results of this study demonstrated that there is a   thermal stratification in Karaj reservoir. The density of phytoplankton in this lake increased in hot weather of the year and it also varies as the depth increases. In 2010, the most population in phytoplankton community of the lake was formed by Diatoma and specially Cyclotella. No relationship was found between the number of phytoplankton and the amount of chemical factors in this study.

کلیدواژه‌ها [English]

  • Karaj Dam
  • Thermal stratification
  • Water Quality
  • phytoplankton
  • Diatoma
 
1- Mortazavi, S.M., Soleimani, K., and Ghafari Movafagh, F. (2010). “Water resource management and land sustainable the case study in Rafsanjan in Iran.” Water and Wastewater, 78, 126-131. (In Persian)
2- Borhani Darian, A., and Moradi, A.M. (2010). “Application of ant-colony-based algorithms to multi- reservoir water resources problems.” J. of Water and Wastewater, 76, 81-91. (In Persian)
3-Pasztaleniec, A., and Poinewozik, M. (2009). “Phytoplankton based assessment of the ecological statues of four shallow lakes (eastern poland) according to water framework directive comparison of approach.” Limnologica, 40, 251-259.
4-Rolland, A., Bertrand, F. , Maumy M., and Jacquet, S. (2009). “Assessing phytoplankton structure and spatio – temporal dynamic in a freshwater ecosystem using a powerful multiway statistical analysis.” J. of Water Res., 43 (13), 3155-3168.
5- Kargar, M. (2004). Study in thermal stratification and water quality effect and eutrophication incidence in hana reservoir, Amir Kabir University, Tehran. (In Persian)
6- Eesazadeh, S. (2004). Amount phosphate release measurement from sediment and making model in latian reservoir, Sharif University, Terhan. (In Persian)
7- Yaghmaeeyan, K., and Feiz Bakhsh, Kh. (2002). Problem organism in water identification and treatment, AWWA Manual, Translated , Lithography by Dibagaran, Tehran. (In Persian)
8-Bilgrami, K.S., and Saha L.C. (2002). A textbook of algae T , CBS Pub., New Dehli.
9-Vashishta, B.R. , and Sinha A.K., and Singh V.P. (2002). Botany for degree students, Part-I :Algae, S. Chand and Company LTD., New Dehli.
10- Sadani, M., Movahedian, H., Jaberian, B. , Faraji, M., and Abooi E. (2000). “Evaluation of crude oil toxicity in Zayandehrud dam water treated from Isfahan water treatment plant using magna and bioassay.” J. of Water and Wastewater, 79, 76-80. (In Persian)
11- WQRRSR. (2009). Guidelines for water quality studies of large dam reservoirs, No. 313-a.
12- Saljoghi, Z.Sh., Malekpour, A. , Rafiee, Gh., Imani, A., and Bakhtiary, M. (2011). “Remaval of nitrite and nitrate from recirculation aquaculture system effluent (RAS) by modified bentonites.” J. of Water and Wastewater, 78, 46-54. (In Persian)
13-Nazarimehr, M. (2010). <http://www.garmabi.com> (Nov. 10, 2011).
14- Cerus, M., and Saba, S. (2005). Microbiology examination for water and wastewater, Translation by Shah Hosseini Sh. , Moezi A.M., Iran University of Science and Technology, Tehran. (In Persian)
15- Water and Energy Research Center. (2003). Decrease pollution study project in cathering ground basin  latian reservoir, Tehran Water Organization, Tehran.
16- Momeni, E. (2005). Determine rule for exploitation multipurpose reservoir from using of dynamic analysis, Sharif University, Tehran. (In Persian)
17- Tafaroj Norooz, A., Shafaee Bajestan, M., and Eyzadjoo, F. (2008). Biological parameters study and making model in kondak reservoir, Tehran. (In Persian)
18- Tajrishi, M., Abrishamchi, A. , Eesazadeh, S., and Ahmadi, M. (2005). Latian reservoir water situation and options evaluation for quality improvement , Sharif University, Tehran. (In Persian)
19-Cabecinha, E., Cortes, R., Cabral, J. A., Ferreia, T., Lourenco, M., and Angelo, P. M. (2009). “Multi-scale approach using phytoplankton, as a first step towards the definition of the ecological status of reservoirs.” Ecological Modeling, 220, 2559-2569.
20-Gal, G., Hipsey, M.R , Parparov, A., Waganer, V., and Zohary, T. (2009). “Implementation of ecological modeling as an effective management and investigation toll: Lake kinneret as a case study.” Ecological Modeling, 220, 1697-1718.
21-Ahlgren, G., and Tilahun, G. (2009). Seasonal variation in phytoplankton biomass and primary production in the ethiopian rift valley lakes ziway, awassa and chamo- the basis for fish production, Ecology and Management of ELAM Water.
22- Abde Ali, A. (2006). Water source and related problems in Karaj, Jahad-e-Daneshgahi, Pub., Tehran.
(In Persian)
23-Environment Assessors. (2005). Survey of Karaj river basin pollution sources, Tehran. (In Persian)
24-  Geological Survey of Iran. (2005) .1:250000 geological map of karaj river basin, Tehran. (In Persian)
25- Iran Water Resources Research Center. (2005-2006). Water resources atlas, geological map, Tehran. (In Persian)
26-APHA. (2005). Standard methods for examination of water and wastewater, 21th Ed., American Public Health Association, Washington, D.C.