Academic literature on the topic 'Matamuhuri River'

This study assessed 16 water quality parameters in situ at 4 locations in the upstream valley of each Sangu and Matamuhuri Rivers. Water Temperature (WT), pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Dissolved Oxygen (DO) were measured by direct probe method. Total Alkalinity (TA), Chloride (Cl^-), Total Hardness (TH), and Carbon-di-oxide (CO₂) were measured by titration method, and Turbidity, Total Suspended Solids (TSS), Ammonia (NH₃), Nitrite (NO^-₂), Nitrate (NO^-₃), Sulfate (SO^2-₄), and Orthophosphate (PO^3-₄) were measured by colorimetric method. The Canadian Council of Ministers of the Environment Water Quality Index (CCMEWQI) was used to calculate the water quality index (WQI). Water quality parameters pH, EC, TDS, DO, TA, Cl^-, TH, CO₂, NO^-₂, NH₃, NO^-₃, and SO^2-₄ were found within the range of standard values for drinking water in all the points of both the rivers, whereas, the WT was found slightly low (19.9°C) from the standard values (20-30°C) at one point of the Matamuhuri River. CO₂ and PO^3-₄ were higher than the standard values at all sampling points of both rivers, with a mean value of 26.15 mgL^-1 having a standard deviation (SD) of 1.61 and 0.19 mgL^-1 (SD 0.05) for Sangu River and 24.15 mgL^-1 (SD 4.49) and 0.21 mgL^-1 (SD 0.03) for Matamuhuri River respectively. The turbidity was higher at all the points of the Sangu River, whereas at two points of the Matamuhuri River. TSS was higher at two and one points of the Sangu and Matamuhuri Rivers, respectively. The CCMEWQI of the Sangu and Matamuhuri Rivers was calculated at 82.95 and 81.08, respectively. The water quality, according to the CCMEWQI for both the Sangu and Matamuhuri Rivers, was in the “good” category of the index.

Finfish richness, their abundance, fishing gears and their catch in the upper Matamuhuri river were studied from January to December 2022 along the river course at hilly upstream of Bandarban Hill District. A total of 95 freshwater finfish species under 69 genera belonging to 36 families under 14 orders were recorded in this mountainous section of this river. Maximum number of species were recorded under the Family Cyprinidae (19 species) followed by Danionidae (11 species) and Bagridae (7 species). Amongst 95 finfish species 11 belonged to ‘endangered’ and 12 to ‘vulnerable’ category of threatened species and four were data deficient (e.g. Barilius barila, Balitora brucei, Eleotris lutea and Oryzias dancena) according to IUCN conservation status. Neolissochilus sp. and Golden Mahashol (Tor puttitora) are reported for the first time from the upstream of Matamuhuri River. A systematic list of recorded finfish with their English names, local names, abundance and conservation status is presented. Under eight categories, 16 types of fishing gears and their catch were documented of which two types of gears (Large push net - Haddi Jal and Bowl trap - Bati Trap) were new and not reported elsewhere earlier. Biodivers. Conserv. Bioresour. Manag. 2024, 10(1): 15-28

AbstractSurveys for shushuks Platanista gangetica were conducted during January to April 1999 in Kaptai Lake and the southern rivers of Bangladesh. A population of at least 125 dolphins was recorded in the Karnaphuli and Sangu rivers and connecting canal. The overall encounter rate was 0.76 dolphins per km. Density was highest in the lower reaches of the Sangu, where we recorded 1.36 dolphins per km. These rates are fairly high when compared with other areas of shushuk distribution. Dolphin movements in the Sikalbaha–Chandkhali Canal were consistent with it being used as a corridor for migration and dispersal between the Karnaphuli and Sangu. Shushuks were also sighted in marine waters of the Karnaphuli and Sangu river mouths, adding credibility to the hypothesis that dolphins move along the coast between the Ganges–Brahmaputra–Meghna and Karnaphuli–Sangu systems, perhaps during the monsoon when freshwater plumes extend into the Bay of Bengal. No dolphins were nobserved in Kaptai Lake, a dam-created reservoir of the upper Karnaphuli, despite reports of occasional sightings by local fishermen. No shushuks were observed in the Bagkhali and Matamuhuri rivers, possibly because of seasonal-closure dams present near the mouths of both rivers. The main threats to dolphin survival in the Karnaphuli-Sangu system are probably accidental entanglement in monofilament gillnets, bioaccumulation of persistent contaminants and possibly collisions with motorized vessels and a decline in prey as a result of over fishing. The most significant conservation measure that could be taken would be to establish a protected area for dolphins in the Sangu River below the Dohazari Bridge.