scholarly journals Studies on planktonic diversity in fresh water reservoirs around Amravati district, Maharashtra

2020 ◽  
Vol 21 (3) ◽  
pp. 137-142
Author(s):  
Kiran Sangve
Keyword(s):  
Surface Water ◽  
Fresh Water ◽  
Indicator Species ◽  
Seasonal Variations ◽  
Algal Species ◽  
Chemical Characteristics ◽  
Water Reservoirs ◽  
Tolerant Species ◽  
Pollution Indicator ◽  
Course Of Study

The present study was carried out to assess the planktonic diversity and seasonal variations in the physic-chemical characteristics of Pohra, Wadali and Chhatri surface water reservoirs around Amravati during June 2014 to May 2015. During the course of study the zooplankton in the reservoir under investigation is represented by five major groups i.e. Ostracoda, Rotifera, Cladocera, Protozoa and Copepoda.  Among phytoplankton a total of 28 algal species were recorded from all the reservoirs under study with 14 taxa from Chlorophyceae, 9 taxa from Bacillariophyceae and 8 from Cyanophyceae. The Chhatri reservoir was found to contain most of the pollution indicator species. Wadali reservoir also exhibited few pollution tolerant species. The water in all the reservoirs was found to be eutrophic in the order of Pohra > Wadali > Chhatri.

scholarly journals Impact of physico-chemical parameters on zooplankton diversity of freshwater reservoirs around Amravati District, Maharashtra

2013 ◽  
Vol 14 (3) ◽  
pp. 131-135
Author(s):  
K. B. Sangve
Keyword(s):  
Surface Water ◽  
Impact Assessment ◽  
Indicator Species ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Water Reservoirs ◽  
Tolerant Species ◽  
Physico Chemical ◽  
Pollution Indicator ◽  
Course Of Study

Impact assessment was carried out on the zooplankton diversity of Pohra, Wadali and Chhatri surface water reservoirs around Amravati with respect to their physico-chemical characteristics. During course of study zooplankton were represented by five major groups i.e. Ostracoda, Rotifera, Cladocera, Protozoa and Copepoda.  High value of physico-chemical parameters and low zooplankton diversity were recorded in Chhatri reservoir, moderate in Wadali lake and low value of physico-chemical parameters and high zooplankton diversity were recorded in Pohara lake. The Chhatri reservoir was found to contain most of the pollution indicator species. Wadali reservoir also exhibited few pollution tolerant species. Prominent among them were Ceratodaphnia, Lepadella, Monostyla, Rotarria, Cyclops, Diaptomus and Ectocyclops. The water in all the reservoirs was found to be eutrophic in the order of Pohra > Wadali > Chhatri.

scholarly journals Biomonitoring the Health of Lake Mansar (Jammu), Using Phytoplankton

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Assadullah Sheikh ◽  
Deepika Slathia
Keyword(s):  
Indicator Species ◽  
Water Body ◽  
Algal Species ◽  
Pollution Index ◽  
Organic Pollution ◽  
Tropical Lake ◽  
Conservation Strategies ◽  
Pollution Indicator ◽  
Productive Water ◽  
Algal Genus

Phytoplankton investigation of a sub-tropical Lake Mansar has revealed a total of 92 species belonging to Chlorophyceae (57 spp.), Bacillariophyceae (20 spp.), Cyanophyceae (11 spp.), Dinophyceae (2spp.) and Euglenophyceae (2 spp.). Perennial Chlorophyceae was recorded to be the most occurred group throughout the study period. Palmer algal genus and species pollution index was used to monitor the health of Mansar Lake. The total scores of 36 for algal genus and 16 for algal species have shown organic pollution of the lake. Thus, phytoplankton can be considered as good bio-indicator for assessing the health of the Lake. Present observations showed that the lake is a highly productive water body, facing pollution problems and is approaching towards eutrophication due to the presence of high number of pollution indicator species of algae. Conservation strategies of the lake must take cognizance to protect it from further deterioration.

Effect of dynamically varying zone-based hedging policies on the operational performance of surface water reservoirs during climate change

2018 ◽  
Vol 488 (1) ◽  
pp. 277-289 ◽  
Author(s):  
Adebayo J. Adeloye ◽  
Bankaru-Swamy Soundharajan
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Operational Performance ◽  
Dynamic Hedging ◽  
Water Reservoirs ◽  
Complex Dynamic ◽  
Water Shortages ◽  
Operational Conditions ◽  
Static Hedging ◽  
The Impact

AbstractHedging is universally recognized as a useful operational practice in surface water reservoirs to temporally redistribute water supplies and thereby avoid large, crippling water shortages. When based on the zones of available water in storage, hedging has traditionally involved a static rationing (i.e. supply to demand) ratio. However, given the usual seasonality of reservoir inflows, it is also possible that hedging could be dynamic with seasonally varying rationing ratios. This study examined the effect of static and dynamic hedging policies on the performance of the Pong reservoir in India during a period of climate change. The results show that the reservoir vulnerability was unacceptably high (≥60%) without hedging and that this vulnerability further deteriorated as the catchment became drier due to projected climate change. The time- and volume-based reliabilities were acceptable. The introduction of static hedging drastically reduced the vulnerability to <25%, although the hedging reduction in the water supplied during normal operational conditions was only 17%. Further analyses with dynamic hedging provided only modest improvements in vulnerability. The significance of this study is its demonstration of the effectiveness of hedging in offsetting the impact of water shortages caused by climate change and the fact that static hedging can match more complex dynamic hedging policies.

scholarly journals Formulated Mathematical Model for Delayed Particle Flow in Cascaded Sub-Surface Water Reservoirs with Validation on River Flow

2018 ◽  
Author(s):  
Ombaki Richard ◽  
Kerongo Joash ◽  
Okwoyo M. James
Keyword(s):  
Mathematical Model ◽  
Time Delay ◽  
Surface Water ◽  
Discrete Time ◽  
River Flow ◽  
Water Reservoir ◽  
Point Sources ◽  
Water Reservoirs ◽  
Discrete Time Delay ◽  
Mixing Problem

Pollution of sub-surface water reservoirs mainly rivers and streams through contaminated water point sources (CWPS) was studied. The objective was to formulate a discrete time delay mathematical model which describes the dynamics of reservoir pollution using mixing-problem processes that involve single species contaminants such as nitrates, phosphorous and detergents. The concentration &nbsp;of pollutants was expressed as a function of the inflow and outflow rates using the principle for the conservation of mass. Systems of ODEs generated from principles of mixing problems were refined into a system of DDEs so that the concentration of pollutant leaving the reservoir at time would be determined at some earlier instant, for the delay. The formulated model is a mathematical discrete time delay model which would be used to describe the dynamics of sub-surface water reservoir pollution. The results from the validation of the model were analyzed &nbsp;&nbsp;to determine how time delays in the mixing processes affect the rate of particle movement in water reservoirs.

scholarly journals Quantifying Focused Groundwater Recharge Induced by Irrigation Surface Water Reservoirs in Crystalline Basement Areas for Complementary Irrigation

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2880
Author(s):  
Apolline Bambara ◽  
Philippe Orban ◽  
Issoufou Ouedraogo ◽  
Eric Hallot ◽  
Francis Guyon ◽  
...  
Keyword(s):  
Surface Water ◽  
Groundwater Recharge ◽  
Large Diameter ◽  
Spatiotemporal Analysis ◽  
Sub Saharan Africa ◽  
Water Reservoirs ◽  
Water Shortages ◽  
Physico Chemical ◽  
Drying Up ◽  
Sub Saharan

Through the practice of irrigation, surface water reservoirs (SWRs) contribute to the socio-economic development and food production activities of populations in Sub-Saharan Africa (SSA). However, they tend to dry up prematurely. One solution to circumvent these irrigation water shortages is to ensure their conjunctive use with groundwater. The objective of this study is to better understand the contribution of SWRs to groundwater recharge and to determine if groundwater may be considered as a complementary local resource for irrigation. The study was carried out on two watersheds in Burkina Faso, Kierma and Mogtedo. The spatiotemporal analysis of piezometric and SWRs level records coupled with physico-chemical analyses of water was used to characterize exchanges between SWRs and groundwater. The regional groundwater recharge at the scale of the watersheds was assessed. At the SWRs scale, a water balance methodology was developed and used to estimate focused recharge. The results show that SWRs interact almost continuously with groundwater and contribute focused recharge. The magnitude of this recharge is a function of the geological context and the sediment texture of the SWRs. It is estimated at 5 mm/day in Kierma and 4 mm/day in Mogtédo. These values are higher than the natural recharge estimated at 0.2 mm/day in Kierma and 0.1 mm/day in Mogtédo. Additionally, the values of hydraulic conductivity are between 0.01 and 2 m/day in Kierma and between 1 × 10−4 and 0.2 m/day in Mogtédo. These conductivities could allow pumping in large-diameter hand-dug wells with a significant yield between 0.5 and 120 m3/day in Kierma and between 0 and 10 m3/day in Mogtédo to palliate the early drying up of the SWRs.

Seasonal variations and chemical characteristics of PM2.5 in Wuhan, central China

2015 ◽  
Vol 518-519 ◽  
pp. 97-105 ◽  
Author(s):  
Fan Zhang ◽  
Zu-wu Wang ◽  
Hai-rong Cheng ◽  
Xiao-pu Lv ◽  
Wei Gong ◽  
...  
Keyword(s):  
Seasonal Variations ◽  
Central China ◽  
Chemical Characteristics
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