Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices
Not only does the Hoa Binh reservoir play essential roles in water storage for electricity generation and flood regulation, but also it has great potential to aid aquaculture production. Presently, aquaculture production sits at around 9,200 tons/year; however, a recent MARD circular (#16 in 2015)...
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| Format: | Article |
| Language: | English |
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Vietnam Ministry of Science and Technology
2022-03-01
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| Series: | Vietnam Journal of Science, Technology and Engineering |
| Subjects: | |
| Online Access: | https://vietnamscience.vjst.vn/index.php/vjste/article/view/85 |
| _version_ | 1797937794452029440 |
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| author | Diep Thi Ngoc Phan Binh Duc Nguyen Paul Liew Ha Thi Thu Pham Tung Thanh Nguyen Hieu Trung Nguyen |
| author_facet | Diep Thi Ngoc Phan Binh Duc Nguyen Paul Liew Ha Thi Thu Pham Tung Thanh Nguyen Hieu Trung Nguyen |
| author_sort | Diep Thi Ngoc Phan |
| collection | DOAJ |
| description |
Not only does the Hoa Binh reservoir play essential roles in water storage for electricity generation and flood regulation, but also it has great potential to aid aquaculture production. Presently, aquaculture production sits at around 9,200 tons/year; however, a recent MARD circular (#16 in 2015) estimated that maximum production would approach 10,000 tons/year in the productive photic zone. This paper supports increased capacity towards a sustainable commodity production model by optimizing production levels and farming practices. To reach this goal, it is necessary to determine water quality parameters using the Relative Water Quality Index (ReWQI) and carrying capacity (CC) analysis. Data was obtained from 30 sites at upstream, midstream, and downstream sections of the reservoir during the 2019 dry and wet seasons. The results from the ReWQI reflected good water quality potential (rated between 92-100) for aquaculture. The total nitrogen (TN) and total phosphorus (TP) levels of 10,794.9 kg/day and 1,965.4 kg/day, respectively, indicate high biological productivity resulting in strong fish growth potential. CC analysis and overall water quality reflect the potential for sustainable and increased productivity to 22,730.4 tons/year, which is an increase in production of over 13,200 tons/year compared to the current period. To reach a higher yield of 40 kg/year/m3 within each cage (5,040 kg/cage/year), the corresponding increase in number needs to be 4,510 cages based on a common cage size of 126 m3 (6x6x3.5 m). In order to reach these future production goals, this work concludes that the local government should begin spatial planning decisions based on appropriate cage allocation and distribution with respect for regular monitoring of water quality and nutrient load capacity of the environment to reach sustainable aquaculture development.
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| first_indexed | 2024-04-10T18:49:45Z |
| format | Article |
| id | doaj.art-d75b263689a44dbdaaa105ad35a7fb1a |
| institution | Directory Open Access Journal |
| issn | 2525-2461 2615-9937 |
| language | English |
| last_indexed | 2024-04-10T18:49:45Z |
| publishDate | 2022-03-01 |
| publisher | Vietnam Ministry of Science and Technology |
| record_format | Article |
| series | Vietnam Journal of Science, Technology and Engineering |
| spelling | doaj.art-d75b263689a44dbdaaa105ad35a7fb1a2023-02-01T08:16:55ZengVietnam Ministry of Science and TechnologyVietnam Journal of Science, Technology and Engineering2525-24612615-99372022-03-0163410.31276/VJSTE.63(4).66-71Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indicesDiep Thi Ngoc Phan0Binh Duc Nguyen1Paul Liew2Ha Thi Thu Pham3Tung Thanh Nguyen4Hieu Trung Nguyen5Vietnam Institute for Fisheries Economics and PlanningResearch Institute for Aquaculture Number 1Vietnam Institute for Fisheries Economics and PlanningFaculty of Environmental Sciences, University of Science, Vietnam National University, HanoiVietnam Institute for Fisheries Economics and PlanningResearch Institute for Aquaculture Number 2 Not only does the Hoa Binh reservoir play essential roles in water storage for electricity generation and flood regulation, but also it has great potential to aid aquaculture production. Presently, aquaculture production sits at around 9,200 tons/year; however, a recent MARD circular (#16 in 2015) estimated that maximum production would approach 10,000 tons/year in the productive photic zone. This paper supports increased capacity towards a sustainable commodity production model by optimizing production levels and farming practices. To reach this goal, it is necessary to determine water quality parameters using the Relative Water Quality Index (ReWQI) and carrying capacity (CC) analysis. Data was obtained from 30 sites at upstream, midstream, and downstream sections of the reservoir during the 2019 dry and wet seasons. The results from the ReWQI reflected good water quality potential (rated between 92-100) for aquaculture. The total nitrogen (TN) and total phosphorus (TP) levels of 10,794.9 kg/day and 1,965.4 kg/day, respectively, indicate high biological productivity resulting in strong fish growth potential. CC analysis and overall water quality reflect the potential for sustainable and increased productivity to 22,730.4 tons/year, which is an increase in production of over 13,200 tons/year compared to the current period. To reach a higher yield of 40 kg/year/m3 within each cage (5,040 kg/cage/year), the corresponding increase in number needs to be 4,510 cages based on a common cage size of 126 m3 (6x6x3.5 m). In order to reach these future production goals, this work concludes that the local government should begin spatial planning decisions based on appropriate cage allocation and distribution with respect for regular monitoring of water quality and nutrient load capacity of the environment to reach sustainable aquaculture development. https://vietnamscience.vjst.vn/index.php/vjste/article/view/85aquaculturecarrying capacityHoa Binh reservoirwater quality index |
| spellingShingle | Diep Thi Ngoc Phan Binh Duc Nguyen Paul Liew Ha Thi Thu Pham Tung Thanh Nguyen Hieu Trung Nguyen Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices Vietnam Journal of Science, Technology and Engineering aquaculture carrying capacity Hoa Binh reservoir water quality index |
| title | Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices |
| title_full | Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices |
| title_fullStr | Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices |
| title_full_unstemmed | Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices |
| title_short | Evaluating the potential of aquaculture in the Hoa Binh reservoir with carrying capacity and water quality indices |
| title_sort | evaluating the potential of aquaculture in the hoa binh reservoir with carrying capacity and water quality indices |
| topic | aquaculture carrying capacity Hoa Binh reservoir water quality index |
| url | https://vietnamscience.vjst.vn/index.php/vjste/article/view/85 |
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