Water-Quality analysis and Fish diversity of Southern West Part of the West-Bengal (original) (raw)
Related papers
The present study has shown that studied Hooghly river sector supported 87 fish species belonging to 12 orders, 39 families and 69 genera. The order Perciformes was dominant with 8 families and 25 number of fish species followed by the order Siluriformes with 8 families and 24 number of fish species. Fish diversity was assessed by calculating the various diversity indices such as Shannon-Wiener index (H /), Simpson's dominance index (C) and evenness index (J). Higher H / value (3.694) observed in post monsoon and lowest (2.398) in monsoon. High evenness value (0.6930) was recorded during monsoon period. Seasonal water quality parameters such as water temperature (o C), pH, DO, nitrate and phosphates has been recorded and were found suitable for fish population.
OIIRJ. Vol. 3 (Sp. Issue), pp. 147-154., 2013
Present study deals with the inventorization of fish species in District Bhandara of Maharashtra India. The study area is well known as a district of lakes. About 30 lakes, ponds, reservoir and some river habitats at rural and forests areas, are explored to collect the fish species and studied their habitat conditions. In previous literature about 38 species are reported in the study area of which all are collected and reported in terms of low, moderate and optimum distribution according to their availability in the nearby markets. During study period 23 more species are collected from the rural water bodies. Identification of species is done by the literature of Day and Jairam. Mostly human interference in the lakes and rivers are mainly responsible for the less distribution of fishes, pollution load and intense hot climatic conditions affects the growth and distribution fishes. Pollution load during the months of summer turns the fish species to develop certain adaptations. The species having more adaptive capabilities showed more in quantities; however some fish fauna is going on the way of scrub down from the study area. Careless management of some lakes and river and agricultural practices in lakes and river basins pollutes the water which creates hazards for eggs and fries to grow up in the adult fishes. Use of certain manures and insecticides in the lake water harms the fish fauna. KEYWORDS: Freshwater fishes, Water bodies, Status, Diversity and Inventorization.
Water quality and fish diversity of Rupnarayan River in Purba Medinipur district, West Bengal
International Journal of Fisheries and Aquatic Studies, 2021
West Bengal is the land of rivers. Human population growth and related activities on river banks have gradually increased over the years. Considering the very high ecological diversity of the water assets and the blessings of the river network, most of the industrial development in this state occurred close to the rivers and the population density is likewise very excessive in these areas. As an end result, rivers receive liquid waste like commercial discharges, municipal sewage and solid waste are also being dumped near the banks of the river. The water parameter test identifies the incoming pollutants and quality of the Rupnarayan River. Water parameter studied such as temperature, pH, BOD, COD, Dissolved Oxygen, conductivity, calcium, magnesium, hardness, alkalinity, nitrate, sulfate, chloride and sodium were recorded from all Sampling Stations. During this study total 36 fish species under 24 families, 8 orders and 26 genera were recorded.
Water quality and fish diversity in Korotoa River of Bogura, Bangladesh
Bangladesh Journal of Fisheries
The study was conducted to explore the physicochemical parameters of water, fish diversity andfisheries resources of Korotoa River at Bogura city of Bangladesh during July 2015 to February 2016. Thewater samples were collected from five sampling stations in the Korotoa River during wet and dry seasons.The results of the study showed that temperature, EC, TDS, DO, BOD, alkalinity, acidity and total hardnessof the Karotoa River water were 25.86ºC, 297.41 ?S/cm, 98.86 mg/L, 2.17 mg/L, 2.64 mg/L, 122.05mg/L, 3.28 mg/L and 75.59 mg/L, respectively. The DO and BOD contents of the river water were foundunsuitable for fisheries when compared with the standard of DoE. A total of ten fish species under six ordersand seven families were identified during the study period. The study also revealed that the most remarkablecause of water quality degradation of the river was waste dumping (58%) followed by urbanization and riverbank erosion. The water quality degradation (46%) negatively influenced...
Sindh University , 2023
The River Indus is one of the most extended water bodies in Pakistan. It is a source of drinking water, hydroelectric power generation, irrigation, agriculture and aquaculture. The present examination wanted to survey the river's physicochemical parameters and biodiversity from June 2016 to May 2017. Total eight stations have been selected along the Indus River, and 08 water quality parameters, i.e., temperature, salinity, dissolved oxygen, power of hydrogen, transparency, alkalinity, hardness, and total dissolved solids, have been checked from all stations on the spot and bring water samples in a plastic bottle. Fish samples were also collected from all stations, preserved all the samples in 10% formalin, and further investigated in the Fresh Water Biology Laboratory at the University of Sindh Jamshoro. A total of 45 fish species have been identified throughout the study period.
Fish Diversity in Freshwater Perennial Water Bodies in East Midnapore District of West Bengal, India
2008
Present survey synthesized information on fish biodiversity in the perennial freshwater body of Ramnagar, East Midnapore district of West Bengal, India. We documented 45 fish species under 29 genera, 18 families and 8 orders during the periods from1990 to 1995, whereas, 34 species from 21 genera and 12 families under 7 orders were recorded presently from freshwater body of different perennial pond. This present database of ichthyofauna clearly indicated that 11 fish species, 8 genera, 6 families and 1 order have lost from this investigated area. Basically, this agricultural based area associated with profuse application of various chemicals, poisons and drugs in agricultural field that largely pollute perennial water body and ultimately exerting growing pressure on living aquatic resources and driven significant fish biodiversity decline. However, over fishing, chemicals, agricultural runoff and other forms of pollution are most important factors which should be restricted for the conservation of freshwater fish biodiversity. Therefore, it may be concluded that preparation of zone wise database of these information and their implementation through Government and various Non-Government Organizations would be the key tools for conservation of freshwater fish biodiversity.
355 FISH DIVERSITY IN GOWDANAKERE TANK OF BHADRAVATHI TALUK, KARNATAKA
The fish diversity of the Gowdanakere tank in relation to physico-chemical parameters was studied by monthly samples taken from February 2010 to January 2011. In this study, Gowdanakere tank supported 13 fish species belonging to 04 orders, 06 families and 12 genera. Among fish families Cyprinidae was dominant. Biodiversity status (IUCN-1994) and diversity indices of fishes is also studied. Physico-chemical characteristics responsible for the occurrence and distribution of fishes in this water body is discussed. The limnological parameters indicate the higher trophic status of the tank which can be attributed to anthropogenic pressure. Hence, proper management and utilization of this fish wealth is necessary to take up the sustainable steps to monitor and conserve fish health.
2016
Estuary is an ecosystem in dynamic state which exerts so many stresses on living organisms. This study aims to compare the physiochemical parameters and fish diversity of the Chettuva estuary in the post monsoon months of four years. Fishes were collected from fishermen. Taste and odour, temperature, pH, salinity, TDS, dissolved oxygen and CO2 were tested. In diversity study about 68 species of fishes belonging to 45 genera were identified. Number of fish species seems to increase by the month of January in all studies because of increase in salinity allowing the entry of more marine fish to this region. The present comparison of four years data reveals that there is notable increase in temperature, decrease in dissolved oxygen and increase in CO2 content. These changes are all indicators of pollution leading to the deterioration of the water quality parameters which can adversely affect the life sustained by it.
The fish diversity and associated environment of 12 strategically selected intertidal stations along the extremely polluted Thane creek on the west coast of India were studied for a year and compared with past available data to investigate changes in the creek ecology due to various anthropogenic activities like industrial, domestic, and solid waste disposal along with land reclamation. Hydro-sedimentological investigations revealed enhancement of total nitrogen (TN) and organic carbon (C org ) load and hypoxic levels of dissolved oxygen (DO) over the years. Silt component of sediment was increasing, with proportionate decrease in clay due to various anthropogenic disturbances. 12 species of fish were recorded along the entire length of the creek with dominance of only 5 species that occurred throughout the year, namely Mugil cephalus, Mystus gulio, Mystus shingala, Tilapia mossambica and Scylla serrata where as the other fishes were rare in their occurrence. A comparison with the past literature for the study area revealed decline in the fish diversity. As per the energy transfer theory, it was observed that the benthos in the study area can support an average fishery yield of at least 256937.2 kg/year (i.e. 21411.433 kg/month). This however is not fully utilized because the fishes were found to feed mostly on phytoplankton and the locals also reported very poor fishery catch in the creek.
2015
in pre monsoon, monsoon and post monsoon periods to determine their ecological health. Among the zooplankton population, four groups such as rotifers, cladocerans, copepods and ostracods were recorded. During the study period, the temperature of five natural water bodies varied between 21.13-29.36˚C and the pH was more or less neutral to alkaline in nature (7.11-8.66). Free carbon dioxide was low (0.06-7.83 mg/l). Dissolved Oxygen (DO) values ranged between 5.56-7.96, 4.33-6.11 and 3.46-5.04 mg/l during pre-monsoon, monsoon and post-monsoon period respectively. The alkalinity and hardness varied from 141.74-204.38 mg/l and 105.77-193.07 mg/l respectively during the study period. The observed salinity of the natural water bodies was also low (0.035-0.059). Nitrate, nitrite, orthophosphate and Biological Oxygen Demand (BOD) were comparatively higher in station-1, 3 and 5 during the monsoon period. Zooplankton diversity was comparatively higher in station-2 and 4. On the other hand, comparatively higher planktonic biomass and less planktonic diversity were recorded in station-1, 3 and 5. The overall ecological health of station-2 and 4 was suitable for aquaculture.