Document Type : scientific research article
Authors
1
Department of Aquatic Production and Exploitation-Faculty of Fisheries and Environment-University of Agricultural Science and Natural Resources-Gorgan-Iran
2
Department of Aquatic Production and Exploitation -Faculty of Fisheries and Environment-University of Agricultural Sciences and Natural Resources
3
Department of Fisheries, Faculty of Animal Sciences and Fisheries, Sari University of Natural Resources, Sari, Iran
4
Inland Waters Aquatics Resources Research Center-Gorgan, Iranian Fisheries Sciences Research Institute, Agricultural Research Education and Extension Organization (AREEO), Gorgan, Iran.
5
Department of Fisheries, Faculty of Natural Resources, Kurdistan University, Sanandaj, Iran
10.22069/japu.2023.20270.1668
Abstract
Wetlands are a critical part of our natural environment and they can reduce the impacts of floods, absorb pollutants and improve water quality. This survey was conducted at 7 stations in three international wetlands Alagol, Almagol and Ajigol wetlands between February 2017 and November 2018. Results showed that water quality characteristics are somewhat in good conditions but amount of phosphates, was more than standard in summer at Alagol and in Autumn and winter at Ajigol. In this study, 57 different species (25 Bacillariophta, 12 Chlorophta, 9 Cyanobacteria, 5 Pyrophyta, 3 Euglenophyta and 2 Xanthophyta and Carophyta) were identified. Bacillariophyta was dominant in all seasons, however Cyanophyta in Alagol and Ajigol wetlands and Pyrophyta in Ajigol were dominant in summer. In the study of water quality index (WQI), it was observed thatexcept in summer and autumn in Ajigol wetland in other seasons of the studied wetlands were in good quality. It seems that the Atrak river as the main source of water supply for these wetlands, is the place where high amounts of agricultural and rural effluents are received, which practically enter these wetlands, appropriate management and corrective measures should be taken.
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