Variation of water quality parameters and correlation among them and fish catch per unit effort of the Tono Reservoir in Northern Ghana

Abstract

Water quality is essential for fish survival and growth in reservoirs. However, little information is known about the water quality status and its relation with fish production in the Tono Reservoir. This study sought to assess water quality parameters and examine association among them as well as determine the correlation between the water quality parameters and fish catch per unit effort of the Tono Reservoir. A three-level stratified sampling was adopted and samples were collected on a monthly basis. Water quality parameters such as water level, temperature, pH, electrical conductivity, transparency, turbidity, dissolved oxygen, chloride, sulphate, phosphate-phosphorus, silica, nitrate-nitrogen, nitritenitrogen, chlorophyll-a, and fish catches were measured simultaneously from each of the three strata of the reservoir. The water quality parameters of the reservoir fell within the recommended range for fish production. Concentrations of water quality parameters for the riverine, transitional and lacustrine zones showed no significant difference (p > 0.05). Catch per unit effort correlated significantly positive with only chloride (r ¼ 0.61, p < 0.05) attributable to fertilisers used on surrounding farm lands and carried by runoff or floods to the reservoir. The reservoir could be classified as mesotrophic based on chlorophyll-a concentration. It was recommended that the reservoir water quality should be monitored quarterly by the Ministry of Fisheries and Aquaculture Development to ensure safe fish production.

Assessment of water quality and its effect on prawn abundance in three tributaries of Shiwalik rivers: Chenab and Ravi of Jammu, India—a case study

“…Within a riverine ecosystem, the abundance of a species changes with seasonal variations in physicochemical properties (Sharma et al2016;Whitfield 1994;Harris and Cyrus 1995;Garcia et al2003). Many researchers in the past have focused on the importance of physicochemical and ecological parameters for outlining the abundance and diversity of fish, prawns and other crustaceans (Martino and Able 2003;Varadharajan et al 2012;Shah and Pandit 2013;Lobato et al 2020;De Sousa et al 2020;Akongyuure et al 2021;Fadlaoui et al 2021;Rathnayake et al 2021).…”

Effect of environmental drivers of fish assemblage and diversity patterns in temporal scale in Mongra Reservoir: A case study from one of the tributaries of Mahanadi Basin, Central India

“…in rise in turbidity (Halder et al, 1990;Islam et al, 2021), and high values occurred during summer due to lack of rain, runoff and flood water as well as gradual settling of suspended particles (Saxena & Saksena, 2012). Rahman (1992) suggested that productive water bodies have a transparency of no more than 0.4 m. similar seasonal trends were found in the Tono reservoir (Akongyuure & Alhassan, 2021), Raipur reservoir (Saxena & Saksena, 2012) and Sardar Sarovar reservoir (Koushlesh et al, 2022).…”

“…Transparency was recorded maximum in 1.85 ± 0.33 m in the pre‐monsoon season and 1.1 ± 0.5 m the monsoon season, which indicates the rapid increase in suspended matter (silt, clay and organic matter) and sediment from the catchment areas during the monsoon season resulting in rise in turbidity (Halder et al, 1990; Islam et al, 2021), and high values occurred during summer due to lack of rain, runoff and flood water as well as gradual settling of suspended particles (Saxena & Saksena, 2012). Rahman (1992) suggested that productive water bodies have a transparency of no more than 0.4 m. similar seasonal trends were found in the Tono reservoir (Akongyuure & Alhassan, 2021), Raipur reservoir (Saxena & Saksena, 2012) and Sardar Sarovar reservoir (Koushlesh et al, 2022).…”

Water Quality Assessment and Decolourisation of Contaminated Ex-Mining Lake Water Using Bioreactor Dye-Eating Fungus (BioDeF) System: A Real Case Study

“…Water quality is essential for drinking water, irrigation, fish farming, recreation, and other uses that require the storage of water. Physical and chemical limnology determines water quality, which comprises all physical, chemical, and biological aspects of water that affect its wise use [ 1 , 2 ]. Due to over-exploitation of water supplies and poor waste disposal techniques, the quality of surface water has degraded in metropolitan areas.…”