Eutrophication of Piedmont Quarry Lakes (North-Western Italy): Hydrogeological Factors, Evaluation of Trophic Levels and Management Strategies

2015 ◽  
Vol 17 (04) ◽  
pp. 1550036 ◽  
Author(s):  
Sara Elisa Domenica Castagna ◽  
Domenico Antonio De Luca ◽  
Manuela Lasagna
Keyword(s):  
Water Quality ◽  
Environmental Sustainability ◽  
Management Strategies ◽  
Trophic Levels ◽  
Shallow Aquifer ◽  
Lake Water Quality ◽  
Piedmont Plain ◽  
Natural Lakes ◽  
Piezometric Surface ◽  
North Western

Quarry lakes resulting from alluvium extraction have excavation depths that can reach the shallow aquifer and extend beyond the piezometric surface. Similar to natural lakes, pit lakes are subject to eutrophication process, both during and after quarrying activity; during mining activity, the eutrophic level is strongly controlled by the excavation method. The present study describes the trophic status of several quarry lakes in the Piedmont plain (north-western Italy) that were evaluated by applying classifications from scientific literature. Most of the studied quarry lakes were mesotrophic or eutrophic, and a slight worsening of water quality was observed over time. In addition, the paper focuses on the pit lake water quality and pit dimension; it was shown that lakes with a larger depth and volume generally had a lower tendency towards eutrophication. At last some management strategies were suggested to achieve environmental sustainability.

scholarly journals Lake Water Quality and Surrounding Vegetation in Dry Churiya Hills, Far-Western Nepal

1970 ◽  
Vol 11 ◽  
pp. 181-188
Author(s):  
Pawan K Neupane ◽  
Madhukar Khadka ◽  
Radium Adhikari ◽  
Dinesh R Bhuju
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
Cultural Values ◽  
Sustainable Use ◽  
Chemical Properties ◽  
Structural Features ◽  
Ageratum Conyzoides ◽  
Lake Water Quality ◽  
Themeda Triandra ◽  
Natural Lakes

Mudka, Bedkot and Jhilmila are natural lakes in dry sub-tropic Churiya hills of Kanchanpur in far-western Nepal. A study was carried out on these lakes to prepare baseline information on water quality, floristic and structural features of adjoining forest vegetation, socio-cultural importance and threats to help support their sustainable use. The study was conducted in March (pre-monsoon) and November 2008 (post-monsoon). A significant seasonal variation (p≤0.05) in the physico-chemical properties of the lake waters was recorded. Adjoining forests of Mudka contained 23 species at canopy, 13 species at shrub and 27 species at herb strata, while that of Bedkot had 31 species of plants at canopy, 9 species at shrub and 37 species at herb strata, and Jhilmila had 23 species at canopy, no species at shrub and 47 species at herb strata. The most frequently seen trees were Mallotus philippensis and Shorea robusta in the forests surrounding Mudka and Bedkot whereas Jhilmila's surrounding forests contained S. robusta, Semicarpus anacardium, Syzygium cumini and Anogeisus latifolius. At shrub stratum, in the forest surrounding Mudka, M. philippensis had the highest density (633.3 no./ha) whereas in case of Bedkot, Solanum erianthum had the highest density (144.0no./ha). At herb stratum, the species with highest coverage at the respective forest were Ageratum conyzoides (7.14%), Viburnum contifolium (8.5%) and Themeda triandra (16.09%). All three lakes possessed cultural values as the people visited the sites as pilgrimage and observed religious festivals mostly on full moon. However, unsustainable consumption of the resources from the surrounding forests is adding pressure on the condition of the lakes. Further, the area and depth of the lakes are diminishing due to the massive amount of sediments from fragile Churiya hills. This calls for the urgent conservation and good management of the lakes. Key words: conservation; forest characteristics; seasonal variation; socio culture DOI: 10.3126/njst.v11i0.4142Nepal Journal of Science and Technology 11 (2010) 181-188

scholarly journals Remediation of Urban Polluted Lake Water and Sediments

2020 ◽  
Vol 8 (5) ◽  
pp. 2338-2341
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Contaminated Soils ◽  
Urban Areas ◽  
Sustainable Consumption ◽  
Management Strategies ◽  
Agricultural Runoff ◽  
Water Bodies ◽  
Quality Analysis ◽  
Lake Water Quality

Entry of contaminated soils and sediments in to the water sources from the urban runoff decreases lake water quality and increases the cost of water purification. Water pollution is inevitable issue when the surrounding activities of nearby people are not maintained proper water handling techniques with respect to preserving lake water quality along with the quantity. Sedimentation is a complex process where the eroded soil particle enters in to the water bodies through flowing water or through any of the transporting media and settles as layers on the bottom of the water bodies. Maintenance of good water quality in the lakes is always most important criteria for promoting good irrigation standards and drinking facilities to the nearby people along with other benefits like recreation, fisheries etc. but all these benefits are questionable in the current scenario as the water in the lakes are being contaminated by industrial and municipal waste disposal practices along with agricultural runoff at certain rural connected areas. Urban areas especially in India are facing severe problems with water as the availability of water reducing year by year at an alarm rate which in turn leads to increased pressure on sustainable consumption of lake water to meet the daily water demand of the city. There should be some suitable management strategies for Protecting water bodies to promote ecological balance at study area, the present study has taken up at koritapadu lake falls under the limits of guntur municipal corporation, Andhra Pradesh, earlier this lake served as major source for drinking and also for other requirements of water to the nearby people but now it became un useful as the water contamination is high and unable to consume as part of daily activities. Total eight samples were collected for both water and sediments by considering all possible corners of contamination, all he samples were analyzed by adopting standard water quality analysis procedures [7]. By keeping the above considerations this study was initiated to promote water quality for future consumption.

Monitoring land use change in the Lake Taupo catchment between 1975, 1990 and 2002 using satellite remote sensing data

2007 ◽  
pp. 17-22
Author(s):  
H. Lilienthal ◽  
A. Brauer ◽  
K. Betteridge ◽  
E. Schnug
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Land Use ◽  
Land Use Change ◽  
Satellite Remote Sensing ◽  
Remote Sensing Data ◽  
Native Vegetation ◽  
Lake Water Quality ◽  
Livestock Farming ◽  
Slow Decline

Conversion of native vegetation into farmed grassland in the Lake Taupo catchment commenced in the late 1950s. The lake's iconic value is being threatened by the slow decline in lake water quality that has become apparent since the 1970s. Keywords: satellite remote sensing, nitrate leaching, land use change, livestock farming, land management

Improvement of Lake Water Quality by using Moving Rapid Water Treatment System

2018 ◽  
Vol 18 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Kwang-Hee Lee ◽  
◽  
Min-Ho Kim ◽  
Nam-Woo An ◽  
Chul-hwi Park
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Lake Water ◽  
Treatment System ◽  
Lake Water Quality ◽  
Water Treatment System

Investigation of a New Approach to Predict Water Quality Extremes with a Case Study of Chemical Determinands in Stream Water

1991 ◽  
Vol 24 (6) ◽  
pp. 25-33
Author(s):  
A. J. Jakeman ◽  
P. G. Whitehead ◽  
A. Robson ◽  
J. A. Taylor ◽  
J. Bai
Keyword(s):  
Water Quality ◽  
Stream Water ◽  
Probability Distributions ◽  
Management Strategies ◽  
Hybrid Modelling ◽  
Trend Model ◽  
Environmental Extremes ◽  
Modelling Approach

The paper illustrates analysis of the assumptions of the statistical component of a hybrid modelling approach for predicting environmental extremes. This shows how to assess the applicability of the approach to water quality problems. The analysis involves data on stream acidity from the Birkenes catchment in Norway. The modelling approach is hybrid in that it uses: (1) a deterministic or process-based description to simulate (non-stationary) long term trend values of environmental variables, and (2) probability distributions which are superimposed on the trend values to characterise the frequency of shorter term concentrations. This permits assessment of management strategies and of sensitivity to climate variables by adjusting the values of major forcing variables in the trend model. Knowledge of the variability about the trend is provided by: (a) identification of an appropriate parametric form of the probability density function (pdf) of the environmental attribute (e.g. stream acidity variables) whose extremes are of interest, and (b) estimation of pdf parameters using the output of the trend model.

A modeling approach to simulate impact of climate change in lake water quality: phytoplankton growth rate assessment

1998 ◽  
Vol 37 (2) ◽  
pp. 177-185 ◽  
Author(s):  
Hany Hassan ◽  
Keisuke Hanaki ◽  
Tomonori Matsuo
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Growth Rate ◽  
Dissolved Oxygen ◽  
Lake Water ◽  
Phytoplankton Growth ◽  
Quality Data ◽  
Model Parameters ◽  
Lake Water Quality ◽  
Phytoplankton Growth Rate

Global climate change induced by increased concentrations of greenhouse gases (especially CO2) is expected to include changes in precipitation, wind speed, incoming solar radiation, and air temperature. These major climate variables directly influence water quality in lakes by altering changes in flow and water temperature balance. High concentration of nutrient enrichment and expected variability of climate can lead to periodic phytoplankton blooms and an alteration of the neutral trophic balance. As a result, dissolved oxygen levels, with low concentrations, can fluctuate widely and algal productivity may reach critical levels. In this work, we will present: 1) recent results of GCMs climate scenarios downscaling project that was held at the University of Derby, UK.; 2) current/future comparative results of a new mathematical lake eutrophication model (LEM) in which output of phytoplankton growth rate and dissolved oxygen will be presented for Suwa lake in Japan as a case study. The model parameters were calibrated for the period of 1973–1983 and validated for the period of 1983–1993. Meterologic, hydrologic, and lake water quality data of 1990 were selected for the assessment analysis. Statistical relationships between seven daily meteorological time series and three airflow indices were used as a means for downscaling daily outputs of Hadley Centre Climate Model (HadCM2SUL) to the station sub-grid scale.

Winter Precipitation and Summer Temperature Predict Lake Water Quality at Macroscales

2019 ◽  
Vol 55 (4) ◽  
pp. 2708-2721 ◽  
Author(s):  
S. M. Collins ◽  
S. Yuan ◽  
P. N. Tan ◽  
S. K. Oliver ◽  
J. F. Lapierre ◽  
...  
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Winter Precipitation ◽  
Summer Temperature ◽  
Lake Water Quality
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