Selected papers from the “Lakes & Reservoirs: Hot Spots and Topics in Limnology” will be published in open-access journal “Toxins” (Impact Factor: 3.273; 5-Year Impact Factor: 3.551). Two special issues have been announced.

Biological Role of Cyanotoxins: Experimental and In-Field Evidence
(co-editors Dr. Spyros Gkelis and Dr. Piotr Rzymski)
Details here. Submission deadline – 31st December 2019
Special Issue Information
Dear Colleagues,
Cyanobacteria are an ancient lineage of oxygenic photosynthetic bacteria found in a broad range of habitats, from soil to oceans, where they play important roles in the global nitrogen and carbon cycles. They are known for the toxic blooms they form in fresh water bodies around the world and the production of toxins, posing a threat to human and environmental health. Despite the tremendous effort to understand the biosynthesis, toxicity, and occurrence of cyanobacteria secondary metabolites, the biological role of these compounds still remains relatively unknown. Various hypotheses in this regard have been put forward, encompassing both intracellular effects such as nutrient storage, light adaptation, and protection against oxidative stress, and extracellular functions including quorum sensing, allelopathic interactions, nutrient acquisition, colony formation, and grazing defense. The existing evidence on the potential role of cyanotoxins is mostly based on experimental studies and require further confirmation by in-field observations. This Special Issue is destined to gather reviews, original experimental papers, and short notes reporting findings on experimental and in-field observations that aim to advance our understanding of the biological role of cyanotoxins.
Dr. Spyros Gkelis and Dr. Piotr Rzymski (Guest Editors)

Human Exposure to Freshwater Toxins: Assessment, Potential, Consequences and Prevention
(co-editors Dr. Piotr Rzymski and Dr. Halina Falfushynska)

Details here. Submission deadline – 31st December 2019

Special Issue Information
Dear Colleagues,
Over the last decades, there has been a substantial effort to understand the mechanisms of the various actions of freshwater toxins derived from in vitro and in vivo models. Particular attention has been paid to the toxic metabolites produced by cyanobacteria, namely microcystins, cylindrospermopsin, anatoxin-a, saxitoxins, beta-methyl-amino-L-alanine, and polymethoxy-alkenes. The presence of selected compounds of this group has also been monitored in surface waters, freshwater biota, and food. There is still, however, a need to fully assess the risks of exposure in human via the recreational use of water, drinking water, and diet, as well as to estimate the potential effects of such exposure.
This Special Issue will welcome original and review manuscripts that focus on the following:
– cases of human intoxications with freshwater toxins
– assessment of dietary risks of exposure to freshwater toxins
– assessment of exposure to freshwater toxins during recreational activities
– assessment of potential associations between presence of freshwater toxins and human disease
– suggestions for clinical interventions in poisonings with freshwater toxinsDr. Piotr Rzymski and Dr. Halina Falfushynska (Guest Editors)