Results 51 to 60 of about 2,784 (221)

Phytoplankton growth and potential cyanotoxin production differ in response to nitrogen and phosphorus amendments in late summer communities from Kabetogama Lake (Minnesota, United States)

Journal of Phycology, EarlyView.
Abstract Cyanotoxins such as microcystin (MC), cylindrospermopsin, and saxitoxin are secondary metabolites that are rich in nitrogen (N). Most cyanobacteria grow best on reduced inorganic N (ammonium, NH4), but when NH4 is absent, cyanobacteria can activate physiological pathways to process other N forms (e.g., nitrate; NO3).
James H. Larson, Ryan P. Maki, Sean W. Bailey, Victoria G. Christensen, Keith A. Loftin, Erin A. Stelzer, James C. Smith, Seth A. McWhorter   +7 more
wiley   +1 more source

Dominance and toxicity without lethality: Exploring biomass, cyanometabolites, and Daphnia responses across Cyanobacterial strains

Journal of Phycology, EarlyView.
Abstract Cyanobacteria are cosmopolitan, important components of biomass with a remarkable ability to synthesize a diverse array of bioactive compounds, some of which may have toxic effects on other organisms and ecosystems. In this study, filamentous cyanobacterial strains isolated predominantly from temperate European freshwaters (Aphanizomenon ...
Łukasz Wejnerowski, Tamara Dulić, Sultana Akter, Michał Rybak, Agnieszka Piasecka, Jakub Szymkowiak, Oskar Kamiński, Anna Czerepska, Filip Pniewski, Zorica Svirčev, Ewa Poniecka, Krzysztof Zawierucha, Katarzyna Taylor, Marcin Krzysztof Dziuba, Jussi Meriluoto   +14 more
wiley   +1 more source

Environmental governance in the face of collapse: The case of Acapulco, Mexico, between tourist splendour and ecological risk

Ecological Solutions and Evidence, Volume 7, Issue 2, April/June 2026.
Underwater clean‐up efforts in Acapulco Bay reveal the visible consequences of chronic coastal pollution. This study shows how Environmental Risk Assessments (ERAs) can integrate scientific evidence, regulatory frameworks and practitioner experience to identify pollution sources and guide more effective coastal governance in cities of the Global South.
Sinuhé Hernández Márquez, María Eugenia Zamudio‐Resendiz, María Luisa Núñez Resendiz, Montserrat Murrieta Alarcón, Alejandro Federico Alva Martínez, Laura Margarita Márquez Valdelamar, Nelly María López Ortiz, Carlos Alberto Sandoval Navarrete, Alberto Pérez Rojas, Alma Socorro Sobrino Figueroa, Yanin Islas Barrios, Ricardo Caballero Fuentes, Nataly Graciela Santos Bustos, Abel Sentíes   +13 more
wiley   +1 more source

Marine Toxins as Pharmaceutical Treasure Troves: A Focus on Saxitoxin Derivatives from a Computational Point of View

Molecules
This work highlights the significant potential of marine toxins, particularly saxitoxin (STX) and its derivatives, in the exploration of novel pharmaceuticals.
Norma Flores-Holguín, Joan S. Salas-Leiva, Erick J. Núñez-Vázquez, Dariel Tovar-Ramírez, Daniel Glossman-Mitnik   +4 more
doaj   +1 more source

Immunoassays and Biosensors for the Detection of Cyanobacterial Toxins in Water

Sensors, 2013
Algal blooms are a frequent phenomenon in nearly all kinds of fresh water. Global warming and eutrophication by waste water, air pollution and fertilizers seem to lead to an increased frequency of occurrence.
Michael G. Weller
doaj   +1 more source

A Review of Common Cyanotoxins and Their Effects on Fish

Toxics, 2023
Global warming and human-induced eutrophication drive the occurrence of various cyanotoxins in aquatic environments. These metabolites reveal diversified mechanisms of action, encompassing cyto-, neuro-, hepato-, nephro-, and neurotoxicity, and pose a ...
Halina Falfushynska, Nadiia Kasianchuk, Eduard Siemens, Eliana Henao, Piotr Rzymski   +4 more
doaj   +1 more source

Distribution and toxicity of Cylindrospermopsis raciborskii (Cyanobacteria) in Portuguese freshwaters [PDF]

, 2004
The cyanobacterium Cylindrospermopsis racborskii has become increasingly prevalent in freshwaters worldwide. This species is of concern from a water quality perspective due to its known ability to produce a potent hepatotoxic alkaloid cylindrospermopsin,
Nogueira, Isabel C. G., Saker, Martin L., Vasconcelos, Vitor M.   +2 more
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Growth and Saxitoxin Production by Cylindrospermopsis raciborskii (Cyanobacteria) Correlate with Water Hardness

Marine Drugs, 2013
The cosmopolitan and increasing distribution of Cylindrospermopsis raciborskii can be attributed to its ecophysiological plasticity and tolerance to changing environmental factors in water bodies.
Sandra Maria Feliciano de Oliveira e Azevedo, Ana Beatriz Furlanetto Pacheco, Ronaldo Leal Carneiro   +2 more
doaj   +1 more source

Biological activated carbon and advanced oxidation processes for the removal of cyanobacterial metabolites in drinking water treatment [PDF]

, 2017
Biological activated carbon (BAC) and advanced oxidation processes (AOPs) are often used in conjunction during drinking water treatment for the removal of trace organic compounds that are not effectively removed during traditional treatment processes ...
Bernstein, Daniel Richard, Glasgow, Graeme D.E., Lay, Mark C., Manley-Harris, Merilyn   +3 more
core  

Some marine toxins [PDF]

, 1995
The article presents some toxins of marine origin. These are tetrodotoxin from pufferfish, saxitoxins from red microalgae that mussels and shellfish ingest, and palitoxin the most toxic marine product isolated from zoonthurian Palythoa ...

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