Ấn phẩm:
Impacts of freshwater scarcity on fish biodiversity in an Indo-Burma Ramsar wetland: A case study of U Minh Thuong National Park, Vietnam
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U Minh Thuong National Park (UMTNP), a Ramsar site characterized by Melaleuca forests and peatlands, is vital
for biodiversity conservation in the Mekong Delta. However, seasonal fluctuations, particularly during the dry
season, threaten freshwater availability and the stability of ecosystems. To evaluate key conservation threats, we
investigated how seasonal water scarcity and water quality impact fish diversity in UMTNP. From 2020 to 2021,
we conducted field surveys across five habitat types: canals, flat-forms with and without aquatic plants, Melaleuca forests, and buffer zones; over four seasonal sampling events. We analyzed fish diversity and water quality
using the Shannon-Wiener, Simpson, and Bray-Curtis indices, alongside nine physicochemical parameters. Our
surveys recorded a total of 1,438 fish individuals, representing 32 species, 19 families, and 8 orders. Fish diversity was found to be highest in canals and flat-forms without aquatic plants, while it was lowest in buffer
zones and Melaleuca forests. Statistical analyses and principal component analysis (PCA) revealed significant
seasonal and spatial differences, particularly in biological oxygen demand (BOD), hydrogen sulfide (H2S), and
total ammonia nitrogen (TAN). The buffer zones showed persistent pollution, and dry-season water scarcity
further diminished fish diversity. These findings provide essential data to inform targeted conservation strategies
and enhance the resilience and sustainability of aquatic ecosystems in UMTNP. Such insights underscore the
urgent need for integrated water and fisheries management across Indo-Burma Ramsar sites facing similar
challenges
Tác giả
Tran, Van Viet
Người hướng dẫn
Nơi xuất bản
Nhà xuất bản
Năm xuất bản
2025
ISSN tạp chí
Nhan đề tập
Từ khóa chủ đề
Agriculture
Bộ sưu tập
Tài liệu tham khảo
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Tệp tin
Impacts of freshwater scarcity on fish.pdf
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