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Updated: May 15, 2026

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy
07:13

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Published on: February 25, 2021

Harmful cyanobacterial blooms: causes, consequences, and controls.

Hans W Paerl1, Timothy G Otten

  • 1Institute of Marine Sciences, University of North Carolina at Chapel Hill, 3431 Arendell Street, 28557, Morehead City, NC, USA. hpaerl@email.unc.edu

Microbial Ecology
|January 15, 2013
PubMed
Summary

Cyanobacteria blooms pose environmental and health risks due to toxins and oxygen depletion. Reducing nutrient inputs is a key strategy to control harmful cyanobacterial blooms and mitigate their impacts.

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Determination of the Settling Rate of Clay/Cyanobacterial Floccules
06:00

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Published on: June 11, 2018

Area of Science:

  • Environmental Science
  • Microbiology
  • Ecology

Background:

  • Cyanobacteria, Earth's oldest oxygenic photoautotrophs, significantly impact the biosphere.
  • They adapt to environmental changes, including anthropogenic impacts like eutrophication and warming.
  • Harmful blooms threaten ecosystems and human health via toxins and oxygen depletion.

Purpose of the Study:

  • To review factors influencing cyanotoxin production and cyanobacterial bloom dynamics.
  • To discuss control and mitigation strategies for harmful cyanobacterial blooms.
  • To evaluate the feasibility of various management approaches in natural and drinking water systems.

Main Methods:

  • Literature review of environmental factors affecting cyanobacteria.
  • Analysis of bloom-forming cyanobacterial taxa and their ecological roles.
  • Discussion of physical, chemical, and biological control strategies.

Main Results:

  • Environmental factors like nutrient supply, temperature, and light influence cyanotoxin production.
  • Global warming favors the expansion and persistence of bloom-forming cyanobacteria.
  • Nutrient (N and P) reduction is a primary effective strategy for controlling blooms.

Conclusions:

  • Controlling nutrient inputs is crucial for mitigating harmful cyanobacterial blooms.
  • Integrated strategies involving physical, chemical, and biological methods show promise.
  • Reducing cyanobacterial biomass limits health risks and hypoxic events.