Bài viết Bước đầu sử dụng quần xã cá để đánh giá chất lượng môi trường nước ở Khu bảo tồn thiên nhiên đất ngập nước Vân Long, tỉnh Ninh Bình trình bày đánh giá chất lượng môi trường nước ở Khu bảo tồn thiên nhiên đất ngập nước Vân Long bằng các chỉ số sinh học của quần xã cá. | VNU Journal of Science Natural Sciences and Technology Vol. 38 No. 2 2022 1-9 Original Article Initial Usage of Fish Community to Assess Water Quality in Van Long Wetland Nature Reserve Ninh Binh Province Ta Thi Thuy1 Dang Thi Thanh Huong2 Tran Duc Hau2 1 Hanoi Metropolitan University 98 Duong Quang Ham Quan Hoa Cau Giay Hanoi Vietnam 2 Hanoi National University of Education 136 Xuan Thuy Cau Giay Hanoi Vietnam Received 16 April 2021 Revised 12 June 2021 Accepted 24 September 2021 Abstract Van Long Wetland Nature Reserve is the 9th Ramsar of Vietnam which has high biodiversity. To assess water quality in this area the present study initially used the Shannon- Wiener Diversity Index H and IBI Index of Biotic Integrity of fish community collected in two field surveys in September 2019 and May 2020. A total of 33 fish species belonging to 18 families 8 orders were determined. The H index was and IBI as 32 indicated that the water quality in the Van Long Wetland Nature Reserve was poor probably influencing on aquatic organisms. In general physical-chemical analysis methods revealed that most of the water parameters in the surface layer are good but many parameters ranged from B1 to A2 levels especially for TP Phosphate calculated as P being at poor level of pollution B1-B2 . Thus results obtained from both bio-indices and physical-chemical analysis seem similar and indicate that the water in Van Long Wetland Nature Reserve was not completely clean. This finding will contribute to providing data for the conservation of biodiversity and ecotourism development in the reserved area. Keywords Wetland Fish species composition Index of Biotic Integrity biodiversity indices water quality Van Long. D _ Corresponding author. E-mail address ttthuy@ https 2588-1140 1 2 T. T. Thuy et al. VNU Journal of Science Natural Sciences and Technology Vol. 38 No. 2 2022 1-9 Bước đầu sử dụng quần xã cá để đánh giá chất lượng môi trường .
