Cyanobacteria and Toxic Blooms in the Great Mazurian Lakes System: Biodiversity and Toxicity

2019 ◽  
pp. 141-157
Author(s):  
Aleksandra Bukowska ◽  
Tomasz Kaliński ◽  
Ryszard J. Chróst
Keyword(s):  
Toxic Blooms

Occurrence and Significance of Toxic Cyanobacteria in Southern Africa

1991 ◽  
Vol 23 (1-3) ◽  
pp. 175-180 ◽  
Author(s):  
W. E. Scott
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Single Species ◽  
Practical Significance ◽  
Toxic Species ◽  
Toxic Cyanobacteria ◽  
Cyanobacterial Species ◽  
Wide Range ◽  
Toxic Blooms ◽  
Different Parts

A comprehensive list is provided of more than forty cyanobacterial species and genera reported to have toxic properties. In South Africa the majority of animal poisonings since 1927 have been caused by a single species Microcystis aeruginosa. Although other toxic species also occur in southern Africa, to date they have been of little practical significance. The widespread distribution of M. aeruginosa throughout southern Africa indicates a tremendous potential for toxic blooms to develop with increasing eutrophication. Using HPLC techniques up to six different toxin variants have been quantified in natural blooms of M. aeruginosa collected in different parts of South Africa. The amounts and proportions of the different toxins in the different samples varied over a wide range. Several additional unidentified toxins were detected.

scholarly journals HABscope: A tool for use by citizen scientists to facilitate early warning of respiratory irritation caused by toxic blooms of Karenia brevis

PLoS ONE ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. e0218489 ◽  
Author(s):  
D. Ransom Hardison ◽  
William C. Holland ◽  
Robert D. Currier ◽  
Barbara Kirkpatrick ◽  
Richard Stumpf ◽  
...  
Keyword(s):  
Early Warning ◽  
Karenia Brevis ◽  
Toxic Blooms

The effect of algal blooms on fish in their inshore nursery grounds in the Gulf of Gdańsk

2017 ◽  
Vol 98 (1) ◽  
pp. 97-104
Author(s):  
Anna J. Pawelec ◽  
Mariusz R. Sapota ◽  
Justyna Kobos
Keyword(s):  
Coastal Zone ◽  
Fish Species ◽  
Algal Blooms ◽  
Cyanobacterial Bloom ◽  
Biomass Accumulation ◽  
Fish Abundance ◽  
Gulf Of Gdańsk ◽  
Nodularia Spumigena ◽  
Toxic Blooms ◽  
Gulf Of Gdansk

Studies of cyanobacterial bloom dynamics show that the highest biomass accumulation of Nodularia spumigena is observed in the shallowest area of the Gulf of Gdańsk in summer. In the same region and time, the highest fish abundance is observed. Mostly young individuals of gobies, small sandeel, flounder, three-spine stickleback and young herring occur. In this work we compare how toxic blooms of cyanobacteria influence the number and structure of fish communities in a coastal zone. The results obtained in our study were rather unexpected. More fish species were caught and the biomass of fish was higher during a bloom than in a month following the sampling (no bloom).

scholarly journals Baltics blame Russia for high risk of toxic blooms

2002 ◽  
Vol 36 (15) ◽  
pp. 312A-312A
Author(s):  
Kellyn S. Betts
Keyword(s):  
High Risk ◽  
Toxic Blooms

Predicting Cyanobacteria dominance in lakes

2001 ◽  
Vol 58 (10) ◽  
pp. 1905-1908 ◽  
Author(s):  
John A Downing ◽  
Susan B Watson ◽  
Edward McCauley
Keyword(s):  
Field Experiments ◽  
Nutrient Concentrations ◽  
Strongly Correlated ◽  
Total N ◽  
Algae Biomass ◽  
Cyanobacteria Blooms ◽  
Freshwater Resource ◽  
Toxic Blooms ◽  
Total P ◽  
Controversial Concept

A controversial precept of aquatic ecology asserts that low ratios of nitrogen to phosphorus (N:P) lead to noxious and sometimes toxic blooms of Cyanobacteria. Cyanobacteria dominance is a major risk to human and ecosystem health. The stoichiometric control of Cyanobacteria therefore has become central to freshwater resource management. This controversial concept is based on observed Cyanobacteria dominance in lakes with low N:P and the results of lab and field experiments. Here we analyze data from 99 of the temperate zone's most studied lakes and show that this model is flawed. We show that the risk of water quality degradation by Cyanobacteria blooms is more strongly correlated with variation in total P, total N, or standing algae biomass than the ratio of N:P. Risks associated with Cyanobacteria are therefore less associated with N:P ratios than a simple increase in nutrient concentrations and algal biomass.

scholarly journals Sport i rekreacja przy wybranych akwenach objętych zakwitami alg i sinic na przykładzie wybranych zbiorników Polski

2015 ◽  
Vol 13 (3) ◽  
pp. 105-117
Author(s):  
Justyna Pacelt ◽  
Wojciech Szeligiewicz
Keyword(s):  
Algal Blooms ◽  
Water Contamination ◽  
Human Life ◽  
Water Environment ◽  
Recreational Activity ◽  
Basic Resource ◽  
Holiday Season ◽  
Water Conditions ◽  
Toxic Blooms ◽  
Financial Losses

The water environment constitutes a basic resource for not only human life but also recreational activity during the holiday season. In reservoirs with high trophic level caused mainly by water contamination, algal blooms occur. This phenomenon is especially intensive in spring and than in summer and affects the use of water reservoirs and coastal areas by people. One type, toxic blooms, is very dangerous for human health. If people who use the reservoir for recreational and professional purposes are unaware of the occurrence of this type of bloom, it may cause serious health problems and financial losses. To avoid this situation, cooperation among institutions which monitor water conditions on each reservoir must be established.

scholarly journals Cianobactérias e Toxicidade: Impacte na Saúde Pública em Portugal e no Brasil (Cyanobateria and Toxicity: Public Health Impact in Portugal and Brazil)

2013 ◽  
Vol 5 (6) ◽  
pp. 1374
Author(s):  
Fernando Bellém ◽  
Susana Nunes ◽  
Manuela Morais ◽  
Rita Fonseca
Keyword(s):  
Public Health ◽  
Microcystis Aeruginosa ◽  
Health Impact ◽  
Acute Poisoning ◽  
Minas Gerais ◽  
Mitigation Measures ◽  
Public Health Impact ◽  
Cyanobacteria Bloom ◽  
Cyanobacteria Blooms ◽  
Toxic Blooms

Um aumento da concentração de nutrientes na água poderá desencadear fluorescências de cianobactérias (densidades >200 cel/mL). Sob determinadas condições as cianobactérias produzem toxinas responsáveis pelo envenenamento de animais e humanos. O objetivo deste estudo é relacionar a ocorrência de fluorescências toxicas em Portugal e no Brasil. Para tal, em 2005 e 2006 foi estudado o fitoplâncton em três reservatórios em Portugal (região sul) e dois no Brasil (Minas Gerais e Pará). Comparativamente foi verificado maior diversidade nos reservatórios portugueses, com dominância de cianobactérias em período de primavera/verão/outono, pertencentes a géneros produtores de hépato e neurotoxinas (Microcystis sp, Aphanizomenon sp, Oscillatoria sp e Planktothrix sp.). No Brasil observou-se dominância de cianobactérias ao longo de todo o ano, com presença de Microcystis aeruginosa, produtora de hepatotoxina. Conclui-se que os reservatórios estudados apresentam géneros produtores de toxinas, com risco para a saúde pública, sendo fundamental implementar medidas que contribuam para mitigar esta situação. Palavras-chave: cianobactérias; fluorescências; toxinas; saúde pública  Cyanobateria and Toxicity: Public Health Impact in Portugal and Brazil  ABSTRACT An increasing of nutrients in water can conduct to the development of cyanobacteria blooms (density>2000 cels/mL). Under specific conditions cyanobacteria produce toxins responsible for acute poisoning of animals and humans. The aim of this study is to describe toxic blooms in Portugal and Brazil. Therefore, phytoplankton from three Portuguese reservoirs (South region) and two from Brazil (Minas Gerais and Pará) were studied in 2005 and 2006. Portuguese reservoirs showed more diversity with dominance of hepatic and neurotoxin genera producers (Microcystis sp, Aphanizomenon sp, Oscillatoria sp e Planktothrix sp.) along spring/summer/autumn seasons. In Brazil dominance of cyanobacteria was observed all along the year with the presence of Microcystis aeruginosa hepatotoxic producer. The studied reservoirs present toxins producers’ genera, with risk for public health, being fundamental the implementation of mitigation measures to reverse this situation.Keywords: cyanobacteria; bloom; toxins; public health

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