Special Issue "Cyanobacterial Threat on Freshwater Safety"

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Aquatic Systems—Quality and Contamination".

Deadline for manuscript submissions: 31 December 2020.

Special Issue Editor

Prof. Dr. Moshe Gophen
Guest Editor
Migal-Scientific Research Institute, POB 831, Kiryat Shmone 11016, Israel
Interests: limnology; wetlands ecology; Kinneret; Hula Valley

Special Issue Information

Dear Colleagues,

Cyanobacteria are organisms that are distributed worldwide in aquatic ecosystems. Cyanobacteria are very common in inland aquatic ecosystems,. Among the 14 orders of filamentous and non-filamentous cyanobacteria (including benthic forms), there are 30 toxic compounds producer species. As of today, about seven biochemical groups of cyanobacterial toxins are known. The geographical distribution of cyanobacteria includes tropical, sub-tropical, and temperate global zones. The diversity, density, toxicity, and longevity are widely varied as a result of the physical (temperature, water mass motion, stratification–de-stratification–turnover changes, light intensity, etc.), chemical (nutrient availabilities, competition, allelopathic relations, etc.), and grazing (fish, zooplankton, large invertebrate, etc.) influences.

Under conditions of depleted inorganic nitrogen (ION), three common species of heterocystous–filamentous cyanobacterial nostocales have the advantage of nitrogen fixing. Nevertheless, a low N/P ratio alone is not the only indicator for cyanobacterial flourishing, which is mostly relevant when the ION concentration is lower than 0.05–0.10 ppm.

Freshwater bodies become globally more Eutrophic because of water scarcity and human demand enhancements. Therefore, drinking-water resources’ susceptibility to cyanobacteria blooms increase. The ultimate need to reduce cyanobacterial blooms by management has become crucial.

An upgraded confirmation of the appropriate operation aimed at nutrient dynamic changes as a guideline tool for management operation must be proposed. The removal of cyanobacteria aimed at clear water is efficiently implemented by chemicals, but decomposed cells release dissolved toxins without turbidity changes. These toxins deteriorate water quality, and their elimination is crucial. Public health implications should be criticized quite often, as follows: The level of not higher than 1 ppb of microcystin LR was fixed for drinking water. Is it still valid? Guidelines for other toxins are not yet available and are highly required.

The major function of this Issue is the renovation and upgrade of the ecological, toxicity, and chemical information of the eco-physiological traits and the public health implications of toxic cyanobacteria.

Prof. Dr. Moshe Gophen

Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • Cyanobacteria
  • Microcystins
  • Water quality
  • Ecophysiology
  • Toxicity
  • Nutrient management

Published Papers (1 paper)

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Open AccessArticle
Spatiotemporal Relationships of Phytoplankton Blooms, Drought, and Rainstorms in Freshwater Reservoirs
Water 2020, 12(2), 404; https://doi.org/10.3390/w12020404 - 03 Feb 2020
Algal blooms, especially those composed of toxic phytoplankton, are a global threat to eutrophic and mesotrophic freshwater reservoirs. While extreme hydrologic events such as flooding and drought have been shown to control bloom onset and success, the spatiotemporal dynamics of these relationships are [...] Read more.
Algal blooms, especially those composed of toxic phytoplankton, are a global threat to eutrophic and mesotrophic freshwater reservoirs. While extreme hydrologic events such as flooding and drought have been shown to control bloom onset and success, the spatiotemporal dynamics of these relationships are still unclear for mesotrophic reservoirs. In this study, the relationships between hydrologic events and phytoplankton in Lake Allatoona and Lake Lanier, Georgia, United States, were characterized using historical and satellite datasets from 2008 to 2017 and statistical modeling. Results showed that the impact of stormflow and rainstorm events varied systematically from riverine to lacustrine reaches of the two reservoirs on weekly and monthly scales. Precipitation duration and stormflow were the most significant and best-fitting predictors of algal bloom biomass in deeper reaches of the two reservoirs, suggesting that algal blooms in more lacustrine environments may be better equipped for wet and stormy regimes than has been previously hypothesized. Full article
(This article belongs to the Special Issue Cyanobacterial Threat on Freshwater Safety)
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