The Mirim Lagoon is one of the most important freshwater lagoons in Brazilian territory, connecting Patos through São Gonçalo Channel. With diversification uses rivers, watersheds, and lakes, sustainable management these ecosystems are extremely relevant. For this reason, monitoring environments great importance. In view above, water quality index (WQI), trophic state (TSI), statistical methods...

Algae react to changes in their environment, such as temperature, nutrients, etc. The uncertainty aquatic environments exacerbates several interacting pressures. As a result, lakes are vital society because they help mitigate flood risks. It maintains the natural equilibrium, allowing flora and fauna flourish. primary objective of this research is identify trophic state index, category, algal a...

Predicting mercury (Hg) concentrations of fishes at large spatial scales is a fundamental environmental challenge with the potential to improve human health. In this study, mercury concentrations were examined for five species across 161 lakes and ecosystem, and watershed parameters were investigated as explanatory variables in statistical models. For all species, Hg concentrations were signifi...

In the southern regions of Mediterranean Europe, the greatest part of water resources for supply systems come from artificial reservoirs. Eutrophication is one of the most serious problems affecting the quality of water stored in reservoirs. A simplified approach that includes water quality aspects as water use limiting factors in a multi-reservoir optimization model can be achieved by adoption...

The major aim of this study was to evaluate the relationships between the rates of microbial activities (phytoplankton primary production, bacterial secondary production, bacterial utilization of organic matter, enzymatic activities, protozoan grazing on bacteria), bacterial numbers, and dissolved organic carbon concentrations and the trophic state index (TSI) of lakes in the upper trophogenic ...

The seasonal variation of the protozooplanktonic community (ciliates and testate amoebae) was studied in a tropical oligotrophic reservoir in Brazil, which was under the influence of two contrasting climatic seasons (rainy/warm and dry/cold). The aim of this study was to evaluate the effect of these climatic changes on physical, chemical and biological variables in the dynamic of this community...

Abstract Zooplankton is a good indicator of water quality state. Analysing the species composition and abundance, it possible to assess condition body predict direction changes. The aim study was analyse zooplankton in shallow urban lake, which restoration limited one method, i.e. wind-aeration. results were compared with earlier data obtained during sustainable (three methods: wind-aeration, p...

Abstract Nutrient loading in aquatic systems from anthropogenic sources is a worldwide concern. The Ganga the most important river India, but pollution currently severely threatening its biodiversity and long-term environmental viability. Water samples were taken 36 locations along length of Yamuna rivers Uttar Pradesh analysed for nutrient concentration to evaluate load, eutrophication danger,...

The trophic status of Laut Tawar Lake was increasingly leading to an alarming level degradation. Efforts anticipate increase in require scientific knowledge the phenomena waters empirically. This research examines parameters produce a model Lake. proposed modification Carlson's Trophic State Index Method. Analysis relationship examined interaction water clarity (SD) with chlorophyll-a (Chl), To...