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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Quantity and Distribution of Plant Nutrients on Eutrophication in Bang Pra Reservoir, Chonburi Province) ผู้เขียน: ดร.รัฐชา ชัยชนะ, รองศาสตราจารย์ ,  Chumlong Arunlertaree, Boonsong Srichareondham, ดร.ณรงค์ วีระไวทยะ, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe main objectives of this study were to study the quantity and variation of plant nutrients in water bodies supplied to Bang Pra reservoir including the characteristics of distribution and variation of plant nutrients and phytoplankton in Bang Pra reservoir. This study was conducted during March 2001 – February 2002. In the inflowing brooks, the quantity of nitrite and total ammonia were significantly different (p<0.01) both in each brook and in each month. It was demonstrated that the quantity of nitrate and orthophosphate were significantly different (p<0.01) in each month but not different in each brook (p>0.05). In Bang Pra reservoir, the quantity of nitrite in each water sample was different (p<0.05) and the quantity of total ammonia was significantly different (p<0.01). When considering both quantity of nitrite and total ammonia in each month, it was shown that they were significantly different (p<0.01). Statistical analysis indicated the significant difference of othophosphate quantity (p<0.01) in each month but not in each water sample station (p>0.05). Given these conditions, Bang Pra reservoir can be classified as a eutrophic lake. High quantity of plant nutrients in Bang Pra reservoir was mainly found at water sample stations of water receiving areas located at the mouth of brooks. The biological analysis revealed that phytoplankton, which was mostly found in Bang Pra reservoir was Aulacoseira, in Division Chromophyta. Moreover, in June, November 2001, and January 2002, Aulacoseira was found in such large quantity compared to other months that these periods could be regarded as periods of phytoplankton bloom. |
 ที่มา:KASETSART UNIVERSITY FISHERIES RESEARCH BULLETINหัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Contribution of mollusc culture to control eutrophication in the coastal bay: a case study of Bandon Bay, Surat Thani, Thailand ) ผู้เขียน:M. Kaewnern, A. Yakupitiyage สื่อสิ่งพิมพ์:pdf AbstractAn ecological survey using measurements of water quality parameters was conducted monthly from January to December 1999 at 29 sampling stations in the river mouth, mollusc culture beds, and open bay areas of Bandon Bay. Information on water level, water discharge, wind, nutrients and Chlorophyll a (Chl-a) concentration in Bandon Bay were used to simulate Chl-a concentration and distribution around the mollusc culture area using hydrodynamic and water quality modules of MIKE21 model. The results showed that low concentration of Chl-a can occur in mollusc culture areas. The difference between simulated and observed values was used to evaluate Chl-a content reduced by molluscs in the culture area. It was found that MIKE21 model can be successfully used to determine Chl-a distribution in relation to nutrient loading, water discharge and wind conditions in Bandon Bay. The modeling results showed that the simulated Chl-a concentrations in November in the mollusc culture area ranged from 11.5 - 37.5 fig I"1 probably due to relatively higher water discharge from river and shrimp farm effluents. The modeling results also showed that Chl-a concentration was approximately 72% lower in the mollusc culture area than in non-mollusc culture areas. These simulated and observed results indicated that mollusc farming can be effectively used to recycle the nutrients discharged from the river and shrimp farms and to control eutrophication in Bandon Bay. |
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ผลงานตีพิมพ์ในวารสารวิชาการComparative assessment of the environmental profile of PLA and PET drinking water bottles from a life cycle perspectiveผู้แต่ง:Papong, S., Malakul, P., Trungkavashirakun, R., Wenunun, P., Chom-In, T., Nithitanakul, M., Dr.Ed Sarobol, Professor , วารสาร:  
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