International Journal of Fisheries and Aquatic Studies
2019, Vol. 7, Issue 5, Part D
Water quality parameters and fisheries in central river region of the Gambia: Differences between wet and dry seasonsAuthor(s):
Omar Ali Bah, Tidiani Kone, Sidat Yaffa, Mamadou Lamine Ndiaye and Seyni SaneAbstract:
This research was aimed at studying the two seasonal changes in water quality of Central River Region (CRR) of The Gambia to influence fish assemblage. Physicochemical properties were measured in-situ with a portable YSI multiprobe water meter and fish sampling was done using a fishing net of 100 × 4 m. A total of 2,039 fishes, represented by sixteen species totaling to a biomass of 49, 236.3g were caught by seine netting. Laboratory analysis were also done for nitrite, nitrate, ammonia and phosphate in CRR using a spectrophotometer. The water variables were subjected to Principal Component Analysis (PCA) which showed a strong positive correlation between oxygen and pH, conductivity and TDS and negative correlation between oxygen and ammonia and nitrate (p ≤ 0.05). The research further showed that seasonal variation in environmental conditions have increased and are negatively influencing fish assemblage in CRR, determined from a three-decade time series of rainfall and atmospheric temperatures.Pages: 285-295 | 290 Views 21 DownloadsDownload Full Article:
How to cite this article:
Omar Ali Bah, Tidiani Kone, Sidat Yaffa, Mamadou Lamine Ndiaye, Seyni Sane. Water quality parameters and fisheries in central river region of the Gambia: Differences between wet and dry seasons. Int J Fish Aquat Stud 2019;7(5):285-295.