Management of the Risk of Blue-Green Algae Blooms in the Iskar Dam for Drinking Water Quality of Sofia City

Review Biotechnology & Applied Microbiology

A comprehensive review of water quality indices (WQIs): history, models, attempts and perspectives

Sandra Chidiac et al.

Summary: Water quality index (WQI) is a widely used tool to assess water quality. It combines physical, chemical, and biological factors into a single value ranging from 0 to 100. This review study presents the background, development stages, different approaches, benefits and drawbacks, and recent attempts in WQI studies. To further enhance the index, WQIs should be linked to scientific breakthroughs, such as ecological considerations, and incorporate statistical methods and technological improvements.

REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY (2023)

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Review Engineering, Environmental

Harmful cyanobacteria-diatom/dinoflagellate blooms and their cyanotoxins in freshwaters: A nonnegligible chronic health and ecological hazard

Yanyan Zhang et al.

Summary: Human and ecological health are at risk due to cyanotoxins from harmful algal blooms (HABs) in freshwater systems. This review examines the seasonal shifts of algal species and their adaptation to changing environmental conditions. It highlights the potential for year-round HABs and chronic loading of freshwater with cyanotoxins, as well as the impacts on human health and ecosystems.

WATER RESEARCH (2023)

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Article Environmental Sciences

Estimating Effects of Natural and Anthropogenic Activities on Trophic Level of Inland Water: Analysis of Poyang Lake Basin, China, with Landsat-8 Observations

Jianzhong Li et al.

Summary: The intensification of anthropogenic activities has caused a significant deterioration in water quality and increased eutrophication in rivers and lakes. Poyang Lake, the largest freshwater lake in China, is facing a severe challenge related to eutrophication, threatening the ecosystem service and drinking water safety. This study utilized Landsat-8 OLI data and developed a semi-analytical algorithm to assess the trophic state of water bodies in the Poyang Lake Basin. The results revealed spatial and temporal variations in the trophic state of water bodies, with higher levels in the north and in winter. Temperature and human activities were identified as significant factors influencing the trophic level of the water.

REMOTE SENSING (2023)

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Review Environmental Sciences

Role of Hydrology in Cyanobacterial Blooms in the Floodplain Lakes

Beata Ferencz et al.

Summary: River floodplains have high environmental and ecological value due to their biodiversity. Floodplain lakes play important roles in biological and hydrochemical processes in these ecosystems. Human activities and climate change have significant impacts on floodplain lakes, affecting water quality and biota dynamics. Understanding the processes controlling floodplain lakes' ecological conditions is crucial for water management and restoration efforts to protect these fragile ecosystems.

WATER (2023)

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Article Biodiversity Conservation

Diversity of the Summer Phytoplankton of 43 Waterbodies in Bulgaria and Its Potential for Water Quality Assessment

Maya P. Stoyneva-Gartner et al.

Summary: This study investigates the use of drones and HPLC as reliable methods for rapid water quality assessment based on phytoplankton analysis. The results also reveal significant correlations between certain algal phyla and classes with different environmental variables, suggesting their potential as bioindicators in future studies.

DIVERSITY-BASEL (2023)

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Article Environmental Sciences

Impacts of Climate Change and Non-Point-Source Pollution on Water Quality and Algal Blooms in the Shoalhaven River Estuary, NSW, Australia

Liu Wan et al.

Summary: This study quantified the potential impacts of climate change and nutrient pollution on water quality and algal blooms. The results showed that increased air temperature and decreased streamflow led to changes in water temperature, dissolved oxygen concentration, and phytoplankton concentration. Decreased streamflow also increased the concentration of total nitrogen, total phosphorus, and phytoplankton with the same pollution inputs. Managing water quality in estuaries subject to climate change requires addressing reduced streamflow and regulating non-point-source pollution discharge.

WATER (2022)

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Article Chemistry, Multidisciplinary

Microcystis aeruginosa and M. wesenbergii Were the Primary Planktonic Microcystin Producers in Several Bulgarian Waterbodies (August 2019)

Maya Stoyneva-Gartner et al.

Summary: This study provides new data on the spread of toxic strains of Microcystis aeruginosa and M. wesenbergii in Bulgaria, highlighting their contribution to the total species composition and phytoplankton abundance. The identification of potential MC-producers through LM and PCR techniques revealed the presence of Microcystis aeruginosa and M. wesenbergii in shallow waterbodies, even when filamentous cyanoprokaryotes dominated.

APPLIED SCIENCES-BASEL (2021)

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Article Public, Environmental & Occupational Health