ASSESSMENT OF ECOLOGICAL CAPACITY  IN THE DAU TIENG RESERVOIR, TAY NINH PROVINCE

Nguyễn Thanh Tùng; Nguyễn Thị Kim Liên; Nguyễn Trung Hiếu; Huỳnh Hoàng Huy; Trần Thúy Vy; Ngô Xuân Quảng

doi:10.34238/tnu-jst.11613

ASSESSMENT OF ECOLOGICAL CAPACITY IN THE DAU TIENG RESERVOIR, TAY NINH PROVINCE

About this article

Received: 27/11/24 Revised: 27/03/25 Published: 28/03/25

Authors

1. Nguyen Thanh Tung , Nguyen Tat Thanh University
2. Nguyen Thi Kim Lien, Can Tho University
3. Nguyen Trung Hieu, Research Institute for Aquaculture No. 2
4. Huynh Hoang Huy, Research Institute for Aquaculture No. 2
5. Tran Thuy Vy, Institute for Public Policy and Rural Development
6. Ngo Xuan Quang, Institute of Life Science – VAST; Graduate University of Science and Technology - VAST

Abstract

The study was conducted to assess the ecological capacity of the Dau Tieng Reservoir. The evaluation was based on the biomass of benthic organisms, including both phytoplankton and zooplankton. Samples were collected during eight sampling periods from October 2022 to April 2024. The results revealed significant variations in phytoplanktonic and zooplanktonic biomass across different sampling locations and time intervals. Phytoplanktonic biomass ranged from 221.1 to 12,415.1 g/m³ at surveyed points, while zooplanktonic biomass fluctuated between 3.5 and 18.5 g/m³ within the sampling locations. Ecological capacity in the Dau Tieng Reservoir was estimated based on zooplanktonic biomasses, suggested an average additional fish mass input ranging from 0.18 to 0.76 kg/m³ per stocking event, depending on specific locations and release timing. The study also proposed some suitable fish species for ecological restoration such as Cyprinus carpio, Pangasianodon hypophthalmus, Trichogaster pectoralis, Osteochilus melanopleurus, and Labeo rohita, etc. for the Dau Tieng Reservoir.

Keywords

Ecological capacity; Fish; Fisheries; Phytoplankton; Reservoir; Zooplankton

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DOI: https://doi.org/10.34238/tnu-jst.11613

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