Status Of Water Bodies Research Articles

Discharge of potentially toxic elements from acid sulfate soils in western Finland: Conflict between water protection and land use?

Acid sulfate soils (ASS) are commonly found in many coastal areas worldwide and typically develop from artificial draining of sulfidic sediments, which release acidity and metals, causing unfavuorable effects on recipient watercourses. This study estimates the actual amounts of metals and elements carried to the Gulf of Bothnia and the Baltic Sea by stream water yearly. The combined load from the many small streams and ditches was found to be proportionally high related to the size of their catchment, emphasizing the importance of including numerous small streams in the understanding of pollution in fresh water and marine environments. This study shows that Cd concentrations in the majority of the studied rivers exceed the Environmental Quality Standard set by the European Union (EU). This causes lowered ecological and chemical status according to the European classification system. Many potentially toxic elements discharge yearly to the Baltic Sea in large quantities from the study area: Thousands of tons of Al and Mn, tens of tons of Co, Cu and Ni, and hundreds of kg of Cd. A challenge for the estimation was irregular, or even missing, data for many rivers, which highlights careful planning of monitoring programs. While the current land use on ASS requires efficient drainage, the national and European strategies and legislation aim towards improved status in water bodies and forbid pollution of the environment. Therefore, the land use and water protection policy conflict.

Legal regulation of the protection of water bodies in the implementation of fishing activities in Ukraine

The article is devoted to the study of the legal regulation of the protection of water bodies in the implementation of fishing activities in Ukraine. It is emphasized that the protection of water bodies must be considered as an integral factor in the legal provision of maintaining the level of ecological safety, the rational use of natural resources, including living aquatic bioresources, the proper functioning of the fisheries industry, ensuring the food security of the state, etc. The author states that in order to ensure the proper legal regulation of the protection of water bodies when carrying out fishing activities, it is necessary to take into account the connection of such objects with the land plots on which they are located. It is claimed that the order of legal regulation of the protection of water bodies follows from the characteristics of such objects, their connection with other resources and the order of their use. In this regard, the norms for the protection of water bodies are reflected in the water and land legislation, as well as in the legislation on fisheries and aquaculture. The analysis of the specified branches of legislation regarding the procedure for regulating the protection of water bodies during the implementation of fishery activities was carried out.
 The author concluded that ensuring the protection of water bodies should consist in the adoption and further implementation of legal norms aimed at implementing measures to protect them from pollution, clogging and depletion, and improving the condition of water bodies. It is claimed that the main purpose of protecting water bodies in the implementation of fishing activities is to preserve fish stocks and ensure their sustainable and rational use in the future.

WEB MAPPING OF SURFACE WATER POLLUTION IN LVIV REGION BY MEANS OF GIS AND REMOTE SENSING

The ecological state of surface waters in Lviv region is affected by various factors: soil and air pollution, technogenic load on the territory, inefficient operation of sewage treatment plants in settlements, pollution and littering of rivers with household and other waste. Another important problem leading to surface water pollution in the region is the absence of water protection zones and coastal protective strips. The lack of cartographic materials and the undefined boundaries of water pro-tection zones and coastal protection strips result in violations of land and water legislation. Currently, the state of water bodies in Lviv region is unsatisfactory. The main problems in this area lie in the growing negative impact on the environment and human health. The main purpose of this paper is to create a web map of surface water pollution in Lviv region, in particular, using remote sensing data. To this end, we have collected and systematized geospatial statistical cartographic materials on the ecological state of surface waters. In addition to statistical data, remote sensing (RS) data obtained from various sources have been used to assess the state of surface waters. The necessary software for the development of such a web map has been identified. An algorithm for uploading geospatial data to the created web resource has been developed. Thus, the web maps of surface water pollution in Lviv region have been created in ArcGIS Online, a software environment

Distribution Analysis of Green Mussels (Perna viridis) in Banyuurip Village, Ujung Pangkah District, Gresik Regency

The aim of the research was to determine the Distribution analysis of Perna viridis diversity based on the suitability map for green mussel cultivation, analysis of community perceptions and the condition of water bodies. Perna viridis aquaculture is suitable for the waters of Banyuurip village based on the variables of sea depth, sea surface temperature, chlorophyll a concentration, and substrate radiance data. Heavy metal content of Pb is located and distributed in polluted areas. It was found that the potential for green mussel aquaculture is greater in warm water habitats, i.e. closer to the coast. In addition, the northeast was identified as a suitable habitat for green mussels. The mid-ocean area in the north-west is of low suitability due to the lack of substrate and chlorophyll. Analysis of community attitudes and behaviour showed that people remain enthusiastic about green mussel farming, although green mussel shell waste remains an environmental problem. Heavy metal analysis of green mussel samples showed that green mussels are still safe for consumption. Therefore, the main conclusion is that the habitat of Perna viridis in the waters of Banyuurip Village still has potential for cultivation, but the waters must be free from pollution.

Evaluation of the Water Quality Status of Water Bodies of Industrial Area in Barrackpore, West Bengal, India by Using Water Quality Index

Evaluation of the Water Quality Status of Water Bodies of Industrial Area in Barrackpore, West Bengal, India by Using Water Quality Index

РОСТ ЕВРОПЕЙСКОЙ РЯПУШКИ (COREGONUS ALBULA, L.) ОЗЕРА ВИШТЫНЕЦКОГО (КАЛИНИНГРАДСКАЯ ОБЛАСТЬ) В ПЕРИОД 2012–2016 ГГ.

In the absence of annual research, information about the individual growth of species in ichitiocenoses become the basis for understanding eutrophication processes occurring in ecosystems. As example, vendace sharply reacts on any shifts in the trophic status of water bodies by changes in growth rates. The vendace is a commercial species and an object of monitoring in Lake Vishtynetskoe, it made it possible to accumulate sufficient amount of information necessary for a preliminary assessment of the stability of the lake’s ecosystem based on data of the individual specimen growth. Retrospective analysis of vendace growth data from 2012 to 2016 showed that during the period under review there are no significant interannual fluctuations, which may indirectly indicate stable environmental conditions. The observed interannual shifts in size and age characteristics are associated with fluctuations in recruitment abundance.

A good word on topmouth gudgeon Pseudorasbora parva in small impoundments in the Aral Sea watershed (Central Asia, Kazakhstan)

Biological invasions are one of the most powerful negative factors threatening the natural biological diversity and well-being of continental water bodies. In the Aral Sea (Small Aral) basin, it has now been possible to stabilize the catastrophe that arose as a result of the irrational use of water resources. However, the diversity and impact of alien fish species on water ecosystems remains little known. For 10 years, we studied the distribution of one fish species, topmouth gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846) in water bodies of the Aral Basin in the Republic of Kazakhstan. Now, this species is found everywhere in the Syrdarya River itself, floodplain lakes and most tributaries, but is not numerous. Using the example of two small local impoundments, the ratio of the abundance of topmouth gudgeon and other fish species was studied. There was no significant correlation between the presence of topmouth gudgeon and the presence/absence of other fish species. There is also no any significant correlation between the total number of fish (abundance) and topmouth gudgeon abundance, diversity indices and topmouth gudgeon abundance. The findings do not suggest that topmouth gudgeon has a negative impact on other fish species. More likely, this species is able to quickly expand new habitats, but under more stable conditions of water bodies it gives way to other fish species. At high water temperatures, topmouth gudgeon remains the only fish species that feeds on the larvae of blood-sucking Culex and Anopheles mosquitoes.

WATER QUALITY INDEX PREDICTION

Water is perhaps the most precious natural resource after air. Though the surface of the earth mostly consists of water, only a small part of it is usable, which makes this resource limited. This Precious and limited resource, therefore, must be used with care. As water is required for different purposes, the suitability of it must be checked before use. Also, sources of water must be monitored regularly to determine whether they are in sound health or not. Poor condition of water bodies are not only the indicator of environmental degradation, it is also a threat to the ecosystem. In industries improper quality of water may cause hazards and severe economic loss. Thus, the quality of water is very important in both environmental and economic aspects. Thus, water quality analysis is essential for using it for any purpose. After years of research, water quality analysis now consists of some standard protocols. There are guidelines for sampling, preservation and analysis of the samples. Here the standard chain of action is discussed briefly so that it may be useful to the analysts and researchers.

The Role of Climate Change in the Proliferation of Freshwater Harmful Algal Blooms in Inland Water Bodies of the United States

Abstract Harmful algae and cyanobacteria blooms are increasing in frequency and intensity in freshwater systems due to anthropogenic impacts such as nutrient loading in watersheds and engineered alterations of natural waterways. There are multiple physical factors that affect the conditions in a freshwater system that contribute to optimal habitats for harmful algae and toxin-producing cyanobacteria. A growing body of research shows that climate change stressors also are impacting water-body conditions that favor harmful algae and cyanobacteria species over other phytoplankton. The overgrowth of these organisms, or a “bloom,” increases the opportunity for exposure to toxins by humans, companion animals, livestock, and wildlife. As waters warm and precipitation patterns change over time, exposure to these blooms is projected to increase. Hence, it is important that states and tribes develop monitoring and reporting strategies as well as align governmental policies to protect their citizens and ecosystems within their jurisdiction. Currently, the policies and approaches taken to monitor and report on harmful algae and cyanobacteria blooms vary widely among states, and it is undetermined if any tribes have specific policies on harmful algae blooms. This paper synthesizes research on algal blooms in inland freshwater systems of the United States. This review examines how climate change contributes to trends in bloom frequency or severity and outlines approaches that states and tribes may use to monitor, report, and respond to harmful algae and cyanobacteria blooms. Significance Statement Inland bodies of freshwater supply drinking water for humans and animals, water for irrigating crops, habitats for aquatic species, places of cultural significance for Indigenous peoples, and other important functions. Many of these bodies of water have been polluted with runoff from industry, including agriculture, and already support harmful algal blooms during warm conditions. Hot extremes associated with climate change are expected to increase the occurrence and duration of harmful algal blooms, and in some places, initiate blooms where none have been recorded previously. These toxic blooms are harmful to people, companion animals, livestock, and wildlife. It is important to review the interconnections among biological, climate, and water systems to monitor blooms and alert the public about their toxin production.

2000–2019年呼伦湖透明度卫星遥感数据集

Water clarity is a significant parameter for evaluating the water quality of lakes. Monitoring the long-term temporal and spatial changes of water clarity of lakes can provides valuable insights for evaluating water quality and eutrophication status of water bodies, as well as guiding lake environmental management and ecological restoration. With MODIS Terra satellite images, we excluded the influence of cloud cover and other interference factors to evaluate the water clarity (i.e. Secchi disk depth), and finally produced a dataset of water clarity of Hulun Lake from 2000 to 2019. It has been validated that the coefficient of determination of the dataset is 0.8, and the root mean squared error is 21.27cm, indicating its accuracy in meeting the monitoring requirements. This data set is expected to serve as a valuable resource for remote sensing-based water quality monitoring and environmental governance of Hulun Lake at a scale of long time series.

ANALYSIS OF THE IMPACT OF THE PETROCHEMICAL INDUSTRY ON THE CONDITION OF SURFACE WATER BODIES

The purpose of the study is to assess the consequences of the impact of the petrochemical industry on the condition of water bodies; studying the level of anthropogenic eutrophication and toxicity of a water body. The article presents the results of using the developed method for determining the eutrophication coefficient for surface rivers, which was carried out on water bodies experiencing the maximum impact of anthropogenic and technogenic factors.The development of research in this area will create the basis for the development of a model for predicting the processes of eutrophication and toxication of water bodies, which is important not only for the industrial hub of the city of Sterlitamak, but also for many regions with a high technogenic load.In this work, the Sterlya River was chosen as the object of study, as a water body located in the zone of influence of chemical and petrochemical enterprises. The laboratory experiment was carried out in accordance with the approved methodology for determining the toxicity of various water bodies and solutions of chemical substances PND F T 14.1: 2: 4.19-20131. During the experiment, indicators such as germination, average length and average dry weight of watercress seedlings were measured.The use of integral methods, which include biotesting methods used to diagnose the state of environmental components in areas with high anthropogenic load, makes it possible to obtain a comprehensive assessment of the object being studied, taking into account many factors, such as natural conditions, environmental parameters, etc.The experimental data obtained confirm both the stimulating and inhibitory effects of the test sample on the analyzed parameters of the test object, which is caused by simultaneous toxic effects and eutrophication processes.It is shown that the proposed method can be used to study the integral toxicity of not only surface and groundwater, but also wastewater, and also to record the dynamics of toxicity in space and time.

Applying water quality standards to pollution from diffuse sources

Water quality standards are instrumental in evaluating the status of water bodies, and in providing protective and restorative endpoints. To date, much of the infrastructure used to implement water quality standards has been directed towards remediating and managing pollution from point source discharges. However, pollution from diffuse sources is the leading cause of water quality impairment, especially by nutrients. Although the effects of nutrient enrichment on streams is well studied, and ecological thresholds identified, those thresholds have not been widely adopted as standards primarily because they are not attainable by point sources. Clearly, a framework for adopting and applying standards to manage pollution from diffuse sources needs to be decoupled from those intended for point sources. This paper argues for a relatively unstructured distributional approach to predict how ecological responses might shift in response to management of diffuse sources. The approach calls for first developing a deterministic model of stressor and response variables, followed by a reformulation as a Bayesian model. In the case here, a structural equation model was developed that linked nutrient enrichment, habitat quality, and chloride and manganese concentrations to an index of macroinvertebrate quality. Results from the Bayesian representation suggest that in landscapes where the drainage network has been highly modified for agricultural production, reduction in total phosphorus alone is expected to have a modest (but non-trivial) effect on macroinvertebrate condition, shifting the distribution of scores up by 1 point. The addition of habitat restoration is likely to shift the distribution upwards by 4 points, an effect size observed in Ohio, USA from other large-scale restoration efforts.

Multi-step prediction of chlorophyll concentration based on adaptive graph-temporal convolutional network with series decomposition

Chlorophyll concentration can well reflect the nutritional status and algal blooms of water bodies, and is an important indicator for evaluating water quality. The prediction of chlorophyll concentration change trend is of great significance to environmental protection and aquaculture. However, there is a complex and indistinguishable nonlinear relationship between many factors affecting chlorophyll concentration. In order to effectively mine the nonlinear features contained in the data. This paper proposes a time-series decomposition adaptive graph-time convolutional network prediction model. Firstly, the original sequence is decomposed into trend component and periodic component by moving average method. Secondly, based on the graph convolutional neural network, the water quality parameter data is modeled, and a parameter embedding matrix is defined. The idea of matrix decomposition is used to assign weight parameters to each node. The adaptive graph convolution learns the relationship between different water quality parameters, updates the state information of each parameter, and improves the learning ability of the update relationship between nodes. Finally, time dependence is captured by time convolution to achieve multi-step prediction of chlorophyll concentration. The validity of the model is verified by the water quality data of the coastal city Beihai. The results show that the prediction effect of this method is better than other methods. It can be used as a scientific resource for environmental management decision-making.

Head-mounted display-based augmented reality for water quality visualisation

Water covers most of the Earth’s surface and is nowhere near a good ecological or recreational state in many areas of the world. Moreover, only a small fraction of the water is potable. As climate change-induced extreme weather events become ever more prevalent, more and more issues arise, such as worsening water quality problems. Therefore, protecting invaluable and useable drinking water is critical. Environmental agencies must continuously check water sources to determine whether they are in a good or healthy state regarding pollutant levels and ecological status. The currently available tools are better suited for stationary laboratory use, and domain specialists lack suitable tools for on-site visualisation and interactive exploration of environmental data. Meanwhile, data collection for laboratory analysis requires substantial time and significant effort. We, therefore, developed an augmented reality system with a Microsoft HoloLens 2 device to explore the visualisation of water quality and status in situ. The developed prototype visualises geo-referenced sensor measurements incorporated into the perspective of the surroundings. Any users interested in water bodies’ conditions can quickly examine and retrieve an overview of water body status using augmented reality and then take necessary steps to address the current situation.

CitarumView: A Google Earth Engine–based application for Citarum River monitoring

The Citarum River is a vital waterway in West Java, Indonesia, that sustains life along its sub-watershed. However, the river is facing significant environmental challenges, such as deforestation, and land-use changes, which have led to a decline in its ecosystem quality. To address this issue, the study aimed to develop an application called “CitarumView” that uses remote sensing methods to assess changes in index values focused on the condition of vegetation, built-up, soil moisture, water body, and surface temperature and obtain a description of the Citarum watershed condition in 2019 and 2020. The Google Earth Engine was used to collect and process satellite imagery data, including visual bands B4 (red), B3 (green), B2 (blue), Near-infrared (NIR), thermal infrared (B10 Landsat-8), and short-wave infrared (SWIR), from Sentinel-2 and Landsat-8 satellites. The CitarumView application provides a tool for decision-makers, researchers, and the general public to continuously monitor the river’s condition. The application also provides information on the changes in the ecosystem quality over time, allowing for more informed decisions to be made concerning river management. The analysis conducted using CitarumView revealed that the average of vegetation index increased by 6% with low to mid vegetation level, the max of water index increased by 4.5%, the average of moisture index increased by 39% with mid canopy water, the average of built-up index decreased by 28%, the average of soil adjusted vegetation index increased by 12% with mid to high vegetation, and the average of surface temperature decreased by 5% for 2019-2020.

Verification of C-Band Geophysical Model Function for Wind Speed Retrieval in the Open Ocean and Inland Water Conditions

Verification of the C-band geophysical model functions (GMF) for the open ocean and the Gorky reservoir was carried out using Sentinel-1 IW-mode Synthetic aperture radar (SAR) images. CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 were considered. The motivation for this study is concerned with the clarification of applying C-band GMFs for SAR images including for the conditions of inland water bodies, as well as with the study of the influence of various wind speed direction sources on the results of wind speed magnitude retrieval for ocean conditions. Comparison of wind speed from the CMOD5.N algorithm using wind direction data from NOAA NDBC oceanographic buoys together with the data provided by NCEP reanalysis data showed that regardless of the geographic location, the result does not depend significantly on the choice of the wind direction source. Novel results of CMOD5.N, CMOD7, GMF for the Caspian Sea, and CSARMOD2 applications to the conditions of the Gorky reservoir are presented. The comparison of these results with the meteorological station measurements showed the best agreement for CMOD5.N. The preliminary results on the construction of new C-band GMF adjusted to the Gorky Reservoir have shown statistical parameters better than for Caspian Sea GMF and CSARMOD2.

Hydrological Regime Alteration Assessment in the Context of WFD 2000/60: A European and Global Review

Although the impact of hydrology on the ecological status of surface water bodies has been highly recognised, the hydrological regime alteration assessment has proven to be a challenging task. In this context, an extensive structured review analysis was used as a research method to investigate the strength and limitations of the hydrological regime alteration assessment methods as adopted by each member of the European Environment Agency and the cooperating countries, according to the Water Framework Directive 2000/60, as well as to propose future directions. The review was also widened to include the methods currently used worldwide in the hydrological alteration studies and the supporting software tools developed. The implementation of a common methodology on a European scale is not applicable, since a single approach would not be able to cope with the regional needs and conditions. The main limitation in almost all the methods developed by European countries and worldwide is the need for a flow time series of high temporal resolution, so as to also capture the systems’ extreme high and low flows. Automatic monitoring systems for rivers can provide a solution. Additionally, hydrological modelling may provide the necessary data for the definition of the reference conditions. Nevertheless, the main limitations of the methodologies reviewed and the challenge for future development are the incorporation of the groundwater contribution to the hydrological regime and the development of quantitative relationships between flow alteration and ecological response.

Synapps - platform for estimating, controlling and optimizing wastewater treatment plants

Wastewater generated by the world's vast population is an important source of pollution and can accelerate the loss of biodiversity and impede the achievement of objectives set by the international community regarding the good status of water bodies. In line with the European Union's sustainable development strategy, which foresees the adoption of increasingly demanding environmental control, energy efficiency and rational management of resources measures, a project with high potential for economic valorization is being implemented, focused on design, development and validation in real conditions, to create an innovative platform for estimating, controlling and optimizing wastewater treatment plants (WWTP), called SYNAPPS. Based on the implementation of multiparametric measurement chains and the application of computational intelligence techniques (eg Big Data Analytics, Data Mining and Machine Learning), the SYNAPPS platform should be capable of providing integrated management of the various WWTP treatment processes, ensuring a high environmental, energy and operational performance, and also simplify and relieve the burden of operating this type of technical infrastructure. SYNAPPS is an R&D project approved by PO Centro, through ANI, started in January 2021 and will last for a period of 30 months, with a budget of around one million euros executed under the responsibility of the consortium formed by CTGA, a company with more than 25 years of experience in the operationalization and management of WWTP and leads the consortium, and by the non-business entities of SI&I, namely, ITeCons with relevant experience in the development of automation and dynamic control systems and in the evaluation of energy and environmental performance of processes, and ISR specializes in evaluating the energy performance of complex systems and developing control algorithms based on computational intelligence.

Hydromorphology of the southern Baltic coastal and transitional waters – New index-based assessment method

The research aimed to develop the complete method for the classification of the hydromorphological status of transitional and coastal water bodies in the southern Baltic region with its adaptation to the current legislation and marine management requirements. The method considers impact and pressure indicators, such as infrastructure and activities carried out in coastal and marine areas, which may affect the change of hydromorphological status and habitat conditions. The methodology covers the change in hydrodynamic conditions, such as the wave regime, sea currents, freshwater inflow, and morphological changes defined by the dominant sediment fraction. The methodology is based on the seven indicators. Administrative, measurement and reanalysis data were used for their classification. The indicators scores were used for the hydromorphological quality index (HQI) calculation. Based on data from 2022, the classification of hydromorphological status showed good status in seven and moderate status in four water bodies.

Modifikasi Kombinasi Elektrokoagulasi – Adsorpsi untuk Menyisihkan Fosfat dan TSS pada Limbah Laundry

The home industry laundry has grown rapidly. However, the growth of this industry has also led to an increase in the volume of laundry wastewater that is discharged into water bodies. This can affect the condition of water bodies, especially since the waste contains phosphates as detergent builders. Therefore, an effective wastewater treatment technology is needed. This research aims to analyze the efficiency of the modified electrocoagulation-adsorption reactor in reducing the concentration of phosphate and TSS in laundry wastewater. Laundry wastewater was flowed at a rate of 0.2 L/minute in the electrocoagulation process with a current strength of 5 A for 60 minutes, followed by column adsorption for 90 minutes conducted in one experimental reactor. Aluminum electrodes and zeolite adsorbent media were used in this experiment. The variables measured were the sampling time intervals between 150-300 minutes with a 30-minute interval. The research results show that the modification of the electrocoagulation-adsorption reactor is capable of reducing the concentration of phosphate and TSS in laundry wastewater. The best efficiency for phosphate reduction occurred at 210 minutes with an efficiency of 97.67%. Meanwhile, the optimal TSS reduction occurred at 300 minutes with an efficiency of 84.26%.