scispace - formally typeset
Search or ask a question

What are the developments in lake Manzala? 


Best insight from top research papers

Lake Manzala has undergone various developments and challenges in recent years. These include morphometric changes due to dredging activities, removal of aquatic macrophytes and fish farms, appearance of mud islands, and significant sediment removal . Additionally, efforts have been made to assess and manage the lake's bathymetry using remote sensing technology and various modeling approaches, such as GLM, ANN, decision tree, and ensemble regression algorithms . The decline in fish production has been a concern, with a shift in productivity trends per boat and per fisherman observed over the years . Pollution from industrial, domestic, and agricultural sources has led to the need for water quality management scenarios, including the use of hydrodynamic models and various improvement strategies like biological biofilm techniques and artificial inlets . Projects like the Radial Channels Project aim to enhance water quality in the lake, showing promising results in improving water quality parameters .

Answers from top 4 papers

More filters
Papers (4)Insight
Open accessPosted Content
05 Sep 2019
1 Citations
Developments in Lake Manzala include water quality management scenarios like drain effluent treatment, biological biofilm techniques, artificial inlets, and drain diversion to improve water quality and preserve the ecosystem.
The developments in Lake Manzala include changes in surface area, removal of aquatic macrophytes and fish farms, formation of mud islands, and extraction of 524.94 million m3 of sediment.
Lake Manzala experienced a decline in fish production from 1995 to 2016. Productivity per boat and fisherman increased slightly, suggesting potential for development in fisheries management practices.
Developments in Lake Manzala include utilizing Landsat 8 imagery with approaches like BAG and decision tree for accurate bathymetry mapping, aiding in cost-effective management model creation for shallow lakes.

Related Questions

What are the trends in lake ice records?5 answersThe trends in lake ice records indicate a consistent pattern of later freeze-up, earlier breakup, and shorter ice duration across multiple lakes in the Northern Hemisphere. Studies show that, on average, ice-on dates have been delayed by 11.0 days, ice-off dates have advanced by 6.8 days, and ice duration has decreased by 17.0 days per century. Remote sensing techniques, such as the Sensitive Lake Ice Detection (SLIDE) model, have been developed to accurately monitor lake ice conditions over large spatial scales, providing valuable insights into the changing ice cover dynamics. Additionally, the use of satellite data has allowed for the extraction of lake ice phenology dates, revealing significant shifts in freeze-up and breakup dates over the past few decades, particularly in regions like Ontario and Manitoba, Canada.
What is the importance of having a lake in good condition?5 answersHaving a lake in good condition is important because it allows for the continuity of ecosystem services and provides long-term societal benefits. Lakes that are in good ecological condition can protect or enhance these benefits, such as acting as a source of drinking water, recharging groundwater, controlling flooding, supporting biodiversity, and providing livelihoods. Additionally, lakes in good condition contribute to maintaining environmental sustainability, particularly in urban environments, where they can help restore the ecosystem and mitigate the challenges of traffic and pollution. Effective management of lakes is crucial for their preservation and restoration, as they are subjected to various pressures such as eutrophication, hydromorphological modifications, acidification, alien species, hazardous substances, and climate changes. Therefore, having lakes in good condition is essential for their heritage, ecological, and aesthetical value, as well as for the well-being of the human population.
What is the current status of Lake Burullus?4 answersLake Burullus, the second-largest coastal lagoon in Egypt, is currently facing water quality degradation due to nutrient enrichment and pollutant loading. The water quality index (WQI) categorizes most lake stations as marginal, indicating poor water quality. Heavy metal contamination in the lake ranges from low to high pollution levels. Human activities, such as copper and cadmium pollution, have significantly impacted the lake's ecology. Fecal contamination from domesticated animal waste is evident in lake water samples. Drain water also shows frequent contamination. Land use changes and developments have led to changes in the lake's ecosystem and an increase in fish production. Remote sensing and GIS techniques have been used to monitor changes in land use/land cover and coastal changes in the lake. The lake's water quality is currently very poor, and it is classified as hyper-eutrophic and elevated trophic. Efforts have been made to improve the lake's water quality and fish production through a national plan.
What is the condition of lakes in dhaka city of Bangladesh?5 answersThe lakes in Dhaka city, Bangladesh, are facing severe deterioration in both quantity and quality due to rapid urbanization and population growth. The water quality of these lakes is severely contaminated with heavy metals such as Pb, Cd, Cu, Zn, and Mn, exceeding the guideline values for drinking and industrial uses. The physicochemical properties and microbial contamination indicate very poor water quality in all lakes, with elevated levels of fecal coliforms. The lakes also show high levels of chlorophyll-a concentration, turbidity, and trophic state index, indicating eutrophic conditions and deteriorating water quality. Dissolved oxygen levels are low, making it difficult for aquatic organisms to survive, and biochemical oxygen demand is high, indicating severe anthropogenic pollution. Overall, the lakes in Dhaka city do not meet the requirements for domestic, drinking, fishing, and industrial uses.
What are some of the most interesting lakes around the world?5 answersLarge, deep salt lakes located at moderate to high altitudes in mountainous terrain are among the most interesting lakes around the world. These lakes, such as Mono, Walker, Qinghai Hu, Shala, Van, Panggong Tso, and Karakul, have ecological similarities including stratification and mixing, depletion of dissolved oxygen, alkaline and sodium-rich waters, high phosphate concentrations, and a range of inorganic nitrogen levels. They also exhibit supersaturation of dissolved oxygen, abundant animals, and seasonally high algal populations, indicating productivity. Most of these lakes contain fish, except for Mono. Other interesting lakes include bog lakes in northern latitudes, anthropogenically acidified lakes, meromictic lakes, playa lakes in arid regions, and alpine lakes. Lakes in glacial scour basins in the northern hemisphere have similar physicochemical characteristics and biota, while tectonic lakes differ greatly among themselves and from other lakes. Lakes Tanganyika and Baikal, which are up to three orders of magnitude older than most others, have exceptionally high faunal diversity and levels of endemicity. Large lakes, accounting for approximately 90 percent of the total surface area and volume of water held in all lakes of the world, are found on all continents, with North America having the highest concentration.
How did arsenic pollution affect near taal lakeanimals?3 answersArsenic pollution in the ponds near Taal Lake has affected the animals in the area. The contaminated ponds had higher levels of arsenic in the water and sediment compared to unaffected ponds. The water and sediment arsenic content showed a moderate positive correlation, indicating the presence of arsenic in both. The major contributor of arsenic pollution to these ecosystems was contaminated groundwater, either directly or through agricultural washings. The study emphasized the detrimental impact of arsenic pollution on the studied ecosystems.

See what other people are reading

Is the target ppm value for fishpond 300-400?
4 answers
The target ppm value for a fishpond typically involves monitoring various water quality parameters to ensure optimal conditions for aquatic life. Fishpond monitoring systems integrate sensors like temperature, pH, turbidity, and oxygen content detectors to maintain suitable water quality. These systems enable real-time data acquisition and remote monitoring, allowing for automatic adjustments to balance oxygen levels and ensure water quality. By utilizing microprocessors, cameras, and oxygen generators, these systems help in reducing labor costs and guaranteeing good water quality for fish breeding. Therefore, while the specific ppm range may vary based on the fish species and pond conditions, continuous monitoring and control systems play a crucial role in maintaining the desired water quality levels within the fishpond.
Does vernacular Saudi Arabian architecture include water features?
4 answers
Vernacular Saudi Arabian architecture does not traditionally include water features in its design. However, there is a growing trend towards integrating buildings on water surfaces in waterfront cities like Jeddah, Saudi Arabia, to create iconic identities and attract tourists. This trend aligns with the 2030 vision of Saudi Arabia to transform Jeddah into a tourist destination by celebrating water-centric architecture. While traditional Saudi Arabian architecture focuses on thermal comfort strategies in hot arid climates without water elements, modern adaptations are exploring new construction methods to incorporate water features while maintaining the character of being in the middle of the water. Therefore, while traditional vernacular architecture in Saudi Arabia typically does not include water features, contemporary developments are exploring innovative ways to integrate water elements into architectural designs.
What are the Factors influencing water footprint changes in food systems?
5 answers
Factors influencing water footprint changes in food systems include dietary shifts, food waste reduction, population growth, urbanization, GDP per capita, agricultural intensification, and technological advancements. Dietary shifts towards vegan and vegetarian diets can significantly reduce water footprints, while reducing food waste also plays a crucial role in water footprint reduction. Population growth, urbanization, and GDP per capita impact agricultural water footprints, with the Engel coefficient and urbanization having significant positive effects. Additionally, agricultural intensification without sustainable practices can lead to water quality degradation, nutrient pollution, and increased water demand. Technological developments, adjustments in agriculture plantation structures, and virtual water imports are recommended strategies to mitigate water scarcity issues in food systems.
Why should river quality be studied, consecuences?
5 answers
Studying river quality is crucial due to its direct impact on human health, aquatic life, and ecosystem sustainability. Anthropogenic activities like urbanization, agriculture, and industrial discharges significantly degrade water quality, affecting parameters such as dissolved oxygen, nutrient levels, and pollutant concentrations. This deterioration can lead to reduced fish abundance, altered pH levels, and increased concentrations of harmful substances like iron, nitrate, and heavy metals, posing risks to both aquatic organisms and human consumers. Monitoring and assessing river quality are essential to identify pollution sources, evaluate the effectiveness of management strategies, and implement necessary measures to improve water quality for sustainable use and ecosystem preservation.
What is the reason for the emergence of the membrane separation process in water treatment compared to common processes?
5 answers
The emergence of membrane separation processes in water treatment compared to common processes is primarily driven by the advantages they offer. Membrane processes provide selectivity, high-performance efficiency, eco-friendliness, and ease of handling, making them more versatile for various applications. These processes are economically friendly, sustainable, and require no chemical usage, reducing capital costs and energy requirements. Additionally, the incorporation of nanometer-sized adsorbents on polymeric membranes enhances their applicability in removing contaminants from wastewater, contributing to the efficiency of water treatment. The evolution of membrane technology has revolutionized water treatment, enabling higher water quality and lower costs, with membrane-based processes like reverse osmosis becoming dominant in desalination. These advancements highlight the significant shift towards membrane separation processes for efficient and sustainable water treatment solutions.
What do the trends in the variability of the chemical composition of river water indicate?
4 answers
The trends in the variability of the chemical composition of river water indicate significant changes influenced by various factors. Studies in different regions show increasing trends in principal ions like sulfates, carbonates, calcium, and magnesium ions, possibly due to climate change, while nutrients and organic substances exhibit moderate decreasing trends. In high-altitude Himalayan ecosystems, long-term changes in major ionic chemistry, particularly calcium and sulphate, have been observed, with increasing calcium content and decreasing sulphate levels over the past few decades. Additionally, in river profiles in eastern Slovakia, decreasing trends in biochemical and chemical oxygen demand, ammonium, and nitrite nitrogen content were noted, attributed to reduced agricultural activity, while water temperature showed an increasing trend possibly linked to global temperature rise. These trends collectively highlight the impact of anthropogenic and climatic factors on river water quality.
What is pollution in water?
5 answers
Water pollution refers to the contamination of water bodies by various pollutants, posing significant environmental and health risks. Sources of pollution include natural contaminants, such as those from human and animal wastes, industrial pollutants, and agricultural runoff. Pollutants can be physical, chemical, or biological in nature, with categories like organic matter, acid rain, nutrients, toxic micropollutants, nanomaterials, and micro/nano plastics contributing to water pollution. The impact of pollution extends to aquatic life, river ecosystems, and human health, affecting clean water availability for domestic, industrial, and agricultural purposes. Industrialization and urbanization exacerbate water pollution, necessitating strict regulations, public awareness, and advanced treatment technologies like ozonation and chlorination for remediation. Overall, water pollution is a pressing global issue that requires comprehensive monitoring, prevention, and remediation efforts to safeguard water resources and ecosystems.
What is the seasonal water availability of the Kali River in Uttarakhand?
5 answers
Seasonal water availability of the Kali River in Uttarakhand varies based on physicochemical parameters and heavy metal contamination. The river's water quality is influenced by factors like temperature, transparency, conductivity, pH, and heavy metal concentrations such as Fe, Zn, Cd, Pb, and Cr. Additionally, the river's low flows, represented by Q7,10 and Q95, play a crucial role in determining water availability throughout the year. Annual estimates show that Q95 is generally higher than Q7,10, indicating potential for optimized water use based on seasonality. Modeling using the QUAL2E model downstream of Muzzafarnagar city provides insights into dissolved oxygen, BOD, nitrogen, and phosphate profiles during the dry season, further highlighting the river's water quality dynamics.
How monovalent and divalent ions cause acidic pH in reservoire water.?
5 answers
Monovalent and divalent ions can contribute to acidic pH in reservoir water through various mechanisms. Divalent ions like Ca2+ can lead to rock dissolution, as observed in low salinity waterflooding studies, potentially increasing effluent pH and causing acidic conditions. On the other hand, the presence of SO42- ions in sediment pore water, possibly originating from acid mine drainage, can elevate acidity levels in reservoirs. Additionally, the translocation of Al and Fe downstream in drainage watersheds due to acid elution and precipitation can accumulate acid neutralizing capacity in streambeds, affecting pH levels in reservoir water. These combined effects of divalent and monovalent ions from various sources can collectively contribute to the acidic pH observed in reservoir water.
How do anthropogenic activities affect the biodiversity of phytoplankton and zooplankton>?
5 answers
Anthropogenic activities have a significant impact on the biodiversity of phytoplankton and zooplankton in freshwater ecosystems. Studies show that these activities lead to changes in water quality, affecting the diversity and community structure of phytoplankton. Additionally, anthropic impacts negatively influence zooplankton communities, altering species dominance and ecological variables in lakes, indicating anthropization. The presence of pollutants like total phosphorus, nitrogen, and heavy metals in water bodies due to human activities correlates with shifts in phytoplankton and zooplankton diversity. Furthermore, the growth of cyanobacteria in water bodies due to favorable conditions created by anthropogenic activities poses a threat to the ecosystem's food chains. Overall, anthropogenic pressures play a crucial role in shaping the biodiversity and health of phytoplankton and zooplankton communities in aquatic environments.
How water bodies changes in urban areas of Chittagong?
5 answers
The urban water bodies (UWBs) in Chittagong Metropolitan City have undergone significant changes over the years. Studies utilizing remote sensing techniques observed a gradual decline in the total number of water bodies from 1989 to 2015 due to factors like unplanned urbanization, industrialization, and illegal encroachments. Additionally, the quality of water in these UWBs was found to be unsuitable for drinking during certain seasons, with high levels of pollutants like EC, BOD, COD, Turbidity, Nitrate, Total coliform, and Fecal coliform. Furthermore, groundwater levels in the central part of the city have been depleting at a rate of about 4.75 m/year, indicating a serious issue that requires comprehensive strategies and regulations to protect this vital resource. These findings highlight the pressing need for coordinated efforts to preserve and manage urban water bodies in Chittagong amidst rapid urbanization and environmental challenges.