Effects of Land Cover Changes on Sediment and Nutrient Balance in the Catchment with Cascade-Dammed Waters

It is commonly believed that changes in the use of the catchment area have a direct impact on the quality of the water environment. Rivers with dams and reservoirs are characterized by a disturbed outflow of sediments and nutrients from the catchment area. The research was based on indicating the variation in time and space of loads of selected parameters of the water quality of the Brda River (Northern Poland) against the land cover changes based on the CORINE Land Cover (CLC) data for the 1990–2018 period. In the lower part of the Brda catchment area, there are three hydropower dams with reservoirs in the form of a cascade, whose work clearly affects the hydrological regime of the river. The analysis of the dependence of the dynamics of water quality changes on the usage of CLC was based on indicators such as sediments (suspended sediment load) and nutrients (total phosphorus load and total nitrogen load). The use of hydrological data on the Brda discharge above and below the reservoirs made it possible to calculate sediment and nutrient trapping efficiency. Linking the CLC data with the indices responsible for the mechanical denudation of the catchment area made it possible to show the strength of changes taking place in the catchment area. The results of the research do not indicate any direct correlation between land cover changes and the dynamics of the denudation process and matter transport in the Brda catchment area. As our research shows, the strong influence on the hydrological regime of the catchment points out the necessity to search for still other research methods supporting the decision-making cycle in the field of water management in the face of climate change.

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Impact of Land Cover Changes on the Soil and Water Quality of Greens Bayou Watershed

Water Air & Soil Pollution ◽

10.1007/s11270-020-04890-7 ◽

2020 ◽

Vol 231 (10) ◽

Author(s):

Balaji Bhaskar Maruthi Sridhar ◽

Jericho Johnson ◽

Adeola Mosuro

Keyword(s):

Water Quality ◽

Land Cover ◽

Land Cover Changes ◽

Soil And Water

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Surface Water Quality Analysis Using CORINE Data: An Application to Assess Reservoirs in Poland

Remote Sensing ◽

10.3390/rs12060979 ◽

2020 ◽

Vol 12 (6) ◽

pp. 979 ◽

Cited By ~ 2

Author(s):

Magdalena Matysik ◽

Damian Absalon ◽

Michał Habel ◽

Michael Maerker

Keyword(s):

Water Quality ◽

Land Use ◽

Surface Water ◽

Land Cover ◽

Catchment Area ◽

Land Use Land Cover ◽

Dam Reservoirs ◽

Catchment Areas ◽

Depth Analysis

Reservoirs are formed through the artificial damming of a river valley. Reservoirs, among others, capture polluted load transported by the tributaries in the form of suspended and dissolved sediments and substances. Therefore, reservoirs are treated in the European Union (EU) as “artificial” or “heavily modified” surface water bodies. The reservoirs’ pollutant load depends to a large extent on the degree of anthropogenic impact in the respective river catchment area. The purpose of this paper is to assess the mutual relation between the catchment area and the reservoirs. In particular, we focus on the effects of certain land use/land cover on reservoirs’ water quality. For this study, we selected twenty Polish reservoirs for an in-depth analysis using 2018 CORINE Land Cover data. This analysis allowed the identification of the main triggering factors in terms of water quality of the respective reservoirs. Moreover, our assessment clearly shows that water quality of the analysed dam reservoirs is directly affected by the composition of land use/land cover, both of the entire total reservoir catchment areas and the directly into the reservoir draining sub-catchment areas.

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Determination of the Connectedness of Land Use, Land Cover Change to Water Quality Status of a Shallow Lake: A Case of Lake Kyoga Basin, Uganda

Sustainability ◽

10.3390/su14010372 ◽

2021 ◽

Vol 14 (1) ◽

pp. 372

Author(s):

John Peter Obubu ◽

Seyoum Mengistou ◽

Robinson Odong ◽

Tadesse Fetahi ◽

Tena Alamirew

Keyword(s):

Water Quality ◽

Land Use ◽

Land Cover ◽

Land Cover Change ◽

Quality Data ◽

Land Cover Changes ◽

Land Use Land Cover ◽

Statistical Tool ◽

Water Quality Data

Catchments for aquatic ecosystems connect to the water quality of those waterbodies. Land use land cover change activities in the catchments, therefore, play a significant role in determining the water quality of the waterbodies. Research on the relationship between land use and land cover changes and water quality has gained global prominence. Therefore, this study aimed at determining land use, land cover changes in the catchments of L. Kyoga basin, and assessing their connectedness to the lake’s water quality. The GIS software was used to determine eight major land use and land cover changes for 2000, 2010, and 2020. Meanwhile, water quality data was obtained through both secondary and primary sources. Spearman correlation statistical tool in SPSS was used to correlate the land use, land cover changes, and water quality changes over the two-decade study period. The results showed that different land use and land cover activities strongly correlated with particular water quality parameters. For example, agriculture correlated strongly with nutrients like TP, TN, and nitrates and turbidity, TSS, BOD, and temp. The correlation with nitrates was statistically significant at 0.01 confidence limit. The findings of this study agreed with what other authors had found in different parts of the world. The results show that to manage the water quality of L. Kyoga, management of land use, land cover activities in the catchment should be prioritized. Therefore, the results are helpful to decision and policy makers and relevant stakeholders responsible for water management.

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Effects of land use/land cover changes on water quality of a sub-tropical river basin

2014 IEEE Geoscience and Remote Sensing Symposium ◽

10.1109/igarss.2014.6947155 ◽

2014 ◽

Author(s):

Satyavati Shukla ◽

Mohan V. Khire ◽

Shirishkumar S. Gedam

Keyword(s):

Water Quality ◽

Land Use ◽

Land Cover ◽

River Basin ◽

Land Cover Changes ◽

Land Use Land Cover ◽

Tropical River ◽

Effects Of Land Use

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First flush effects in an urban catchment area in Aalborg

Water Science & Technology ◽

10.2166/wst.1998.0060 ◽

1998 ◽

Vol 37 (1) ◽

pp. 251-257 ◽

Cited By ~ 20

Author(s):

Torben Larsen ◽

Kirsten Broch ◽

Margit Riis Andersen

Keyword(s):

Water Quality ◽

Catchment Area ◽

Quality Parameters ◽

Average Concentration ◽

First Flush ◽

Storm Events ◽

Urban Catchment ◽

Discharge Measurements ◽

Quality Measurements

The paper describes the results of measurements from a 2 year period on a 95 hectare urban catchment in Aalborg, Denmark. The results of the rain/discharge measurements include 160 storm events corresponding to an accumulated rain depth of totally 753 mm. The water quality measurements include 15 events with time series of concentration of SS, COD, BOD, total nitrogen and total phosphorus. The quality parameters showed significant first flush effects. The paper discusses whether either the event average concentration or the accumulated event mass is the most appropriate way to characterize the quality of the outflow.

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Formulating biossay data of chemicals and environmental water

Water Science & Technology ◽

10.2166/wst.2000.0367 ◽

2000 ◽

Vol 42 (3-4) ◽

pp. 115-123 ◽

Cited By ~ 8

Author(s):

R. Shoji ◽

A. Sakoda ◽

Y. Sakai ◽

M. Suzuki

Keyword(s):

Water Quality ◽

Low Density Lipoprotein ◽

Water Environment ◽

Density Lipoprotein ◽

Environmental Water ◽

Toxicity Data ◽

Human Beings ◽

Environmental Waters ◽

Bodies Of Water

The quality of environmental waters such as rivers is often deteriorated by various kinds of trace and unidentified chemicals despite the recent development of sewage systems and wastewater treatment technologies. In addition to contamination by particular toxicants, complex toxicity due to multi-component chemicals could be much more serious. The environmental situation in bodies of water in Japan led us to apply bioassays for monitoring the water quality of environmental waters in order to express the direct and potential toxicity to human beings and ecosystems rather than determinating concentrations of particular chemicals. However, problems arose from the fact that bioassays for pharmaceutical purposes generally required complicated, time-consuming, expert procedures. Also, a methodology for feedback of the resultant toxicity data to water environment management has not been established yet. To this end, we developed a novel bioassay based on the low-density lipoprotein (LDL) uptake activity of human hepatoblastoma cells. The assay enabled us to directly detect the toxicity of environmental waters within 4 hours of exposure. This is a significantly quick and easy procedure as compared to that of conventional bioassays. The toxicity data for 255 selected chemicals and environmental waters obtained by this method were organized by a mathematical equation in order to make those data much more effectively and practically useful to the management of environmental waters. Our methodology represents a promising example of applying bioassays to monitor environmental water quality and generating potential solutions to the toxicity problems encountered.

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Development and evaluation of the Lake Multi-biotic Integrity Index for Dongting Lake, China

Journal of Limnology ◽

10.4081/jlimnol.2015.1186 ◽

2015 ◽

Cited By ~ 2

Author(s):

Xing Wang ◽

Binghui Zheng ◽

Lusan Liu ◽

Lijing Wang

Keyword(s):

Water Quality ◽

Water Environment ◽

Aquatic Organisms ◽

Dongting Lake ◽

Assessment System ◽

Biotic Integrity ◽

Diatom Index ◽

Integrity Index ◽

Biotic Integrity Index

<p>A Lake Multi-biotic Integrity Index (LMII) for the China’s second largest interior lake (Dongting Lake) was developed to assess the water quality status using algal and macroinvertebrate metrics. Algae and benthic macroinvertebrate assemblages were sampled at 10 sections across 3 subregions of Dongting Lake. We used a stepwise process to evaluate properties of candidate metrics and selected ten for the LMII: Pampean diatom index, diatom quotient, trophic diatom index, relative abundance diatoms, Margalef index of algae, percent sensitive diatoms, % facultative individuals, % Chironomidae individuals, % predators individuals, and total number of macroinvertebrate taxa. We then tested the accuracy and feasibility of the LMII by comparing the correlation with physical-chemical parameters. Evaluation of the LMII showed that it discriminated well between reference and impaired sections and was strongly related to the major chemical and physical stressors (r = 0.766, P<0.001). The re-scored results from the 10 sections showed that the water quality of western Dongting Lake was good, while that of southern Dongting Lake was relatively good and whereas that of eastern Dongting Lake was poor. The discriminatory biocriteria of the LMII are suitable for the assessment of the water quality of Dongting Lake. Additionally, more metrics belonging to habitat, hydrology, physics and chemistry should be considered into the LMII, so as to establish comprehensive assessment system which can reflect the community structure of aquatic organisms, physical and chemical characteristics of water environment, human activities, and so on.</p>

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