Chemical and microbiological properties of Lake Aygır in Turkey and usage of drinking, fisheries, and irrigation

Since water is one of the essentials for life, the presence and quality of water in the habitat is extremely important. Therefore, water quality change and management of Lake Aygır was investigated in this study. For this, water samples collected from the lake and the irrigation pool between May 2015 and May 2016 were analyzed monthly. Spectrophotometric, titrimetric and microbiological methods were used to determine the water quality. According to some water quality regulations, HCO3, NH4, Cu, Mo, Br, fecal coliform and total suspended solid (TSS) values were found above the limit values. The other 29 parameters comply with Turkish national and international legislations. Lake Aygır was negatively affected by the surrounding settlements and agricultural activities. It is thought that the water resource should be monitored periodically and remedial studies should be done to prevent parameters exceeding the limits. However, Lake Aygır was generally suitable for drinking, use, fishing and irrigation.

Clogging and Water Quality Change Effects of Typical Metal Pollutants under Intermittent Managed Aquifer Recharge Using Urban Stormwater

Managed aquifer recharge (MAR) using urban stormwater facilitates relieving water supply pressure, restoring the ecological environment, and developing sustainable water resources. However, compared to conventional water sources, such as river water and lake water, MAR using urban stormwater is a typically intermittent recharge mode. In order to study the clogging and water quality change effects of Fe, Zn, and Pb, the typical mental pollutants in urban stormwater, a series of intermittent MAR column experiments were performed. The results show that the type of pollutant, the particle size of the medium and the intermittent recharge mode have significant impacts on the pollutant retention and release, which has led to different clogging and water quality change effects. The metals that are easily retained in porous media have greater potential for clogging and less potential for groundwater pollution. The fine medium easily becomes clogged, but it is beneficial in preventing groundwater contamination. There is a higher risk of groundwater contamination for a shallow buried aquifer under intermittent MAR than continuous MAR, mainly because of the de-clogging effect of porous media during the intermittent period.

Nitrogen legacies in anthropogenic landscapes: a case study in the Mondego Basin in Portugal

Nitrogen (N) legacies have built up in anthropogenic landscapes over decades of agricultural intensification, and these legacies lead to time lags in water quality change measurable even beyond the moment of application of N. It is important to understand these legacies to quantify the relationship between N inputs and N concentrations in streams and implement best management practices for water quality improvement; however, little is known about the magnitude of legacies in various landscape elements like soils and groundwater. Here, we have used the ELEMeNT (Exploration of Long-tErM Nutrient Trajectories) model to explore the buildup and depletion of N legacies over a 216-year period, across the Mondego River Basin, a 6645-km2 watershed in Portugal, where human interventions have considerably changed the characteristics of the basin to prevent floods and improve farming conditions in recent decades. The results show that the increase in the amount of inorganic fertilizer applied was the main driver for the anthropogenic N loads in the watershed from 1950 until the beginning of the 1990s. The N inputs have been decreasing since then, but N loads in the river did not document any decrease till the 1990s; after which there was a decline. This time lag between the N inputs to the watershed and the N loads in the river (about two decades) is a function of accumulation of N legacy.

Comparison of Water Quality and Heavy Metals Concentration between Lata Janggut and Lata Keding, Jeli, Kelantan

Water quality change is caused by indirectly or directly sources such as human activities,uncontrolled sewage, or heavy metals and sediments. This study was conducted at two famousecotourism places in Jeli, Kelantan which are Lata Janggut and the new ecotourism place, LataKeding. The main objective of this study is to compare water quality index and heavy metals at thecascades. Twelve samples were collected from two points which are flowing water and stagnantwater in each cascade. Mann Whitney test was used to determine whether there are significantdifferences in concentration of each physical and chemical parameters between Lata Keding andLata Janggut. Spearman correlation was also used to determine the relationships between physicaland chemical parameters. This study found that Water Quality Index (WQI) in Lata Janggut is 69.07(Class III) and Lata Keding is 71.75 (Class III) which means that the water quality was slightlypolluted for both cascades. Therefore, Lata Janggut and Lata Keding require extensive treatment ifit will be used for water supply but still under control and safe to had body contact with the water.However, further monitoring are needed to avoid any environmental issues arise.

Short-Term Variation and Discharge Mechanism of the Futamata Hot Spring Estimated by Continuous Monitoring Data

Japan has abundant hot spring resources, which, if used appropriately, could contribute to CO2 emission reduction and socioeconomic development. Thus, for the appropriate use of hot spring resources, it is necessary to estimate the detailed discharge mechanism and its surrounding hydraulic characteristics. In our study, a hot spring monitoring device was developed and installed in the Futamata hot spring to evaluate its discharge mechanism. Comparison between the measured values of the monitoring device and the amount of precipitation indicated that this hot spring shows two types of water quality change trends depending on the intensity of precipitation. However, this was a short-term variation that could not be detected by conventional methods. To address this limitation, we created a new discharge mechanism model for the Futamata hot spring based on these observations, which allowed for the continuous observation of hot spring water using a monitoring device and was effective in detecting short-term variations. As such observations contribute to estimating the hydraulic structure around the hot spring, they are important for appropriate use of hot spring resources.

Lesson From Covid19 Outbreak And Its Impact: A Generalized Study

: An infectious disease enumerated in Wuhan, China in December 2019, and then exported in many countries across world called Coronavirus disease 2019. It is also named by COVID-19. COVID-19 is an ongoing pandemic 60.2 Million confirmed cases, which is a leading health concern for public across the world, where mainly middle and old age people are hospitalized and dead across the affected countries. Where more than 1.42 Million people have deceased and More than 41.5 Million people have been recovered. Almost all the countries are fighting against the transmission of the virus by restricting transportation and other daily life activities. Coronavirus outbreak causes many psychological disorders, such as, fear of infection and dying. On the other hand, COVID-19 results some positive consequences on environment due to restricted human activities. Environmental conditions including air quality, global warming, water quality, change of biodiversity and ecosystem and many more parameters are shows a significant improvement in meteorological graph. Overall environmental pollution is reduced and earth is healing itself.