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The prefix cyan comes from the Greek κύανoς meaning "a dark blue substance", [19] and usually indicates any of a number of colours in the blue/green range of the spectrum. Cyanobacteria are commonly referred to as blue-green algae. Traditionally they were thought of as a form of algae, and were introduced as such in older textbooks.
Tests show the toxin at clumps of algae 50 times higher than in nearby water. Safety Alert | Dog’s death likely linked to toxic algae along Tri-Cities river shore Skip to main content
Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to other organisms, or by other means.
The name "cyanobacteria" (from Ancient Greek κύανος (kúanos) 'blue') refers to their bluish green color, [8] [9] which forms the basis of cyanobacteria's informal common name, blue-green algae, [10] [11] [12] although as prokaryotes they are not scientifically classified as algae.
The protoplast is a light blue-green color, appearing dark or brown due to optical effects of gas-filled vesicles; this can be useful as a distinguishing characteristic when using light microscopy. These vesicles provide the buoyancy necessary for M. aeruginosa to stay at a level within the water column at which they can obtain optimum light ...
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Blue-Green Algae (Cyanobacteria) and their Toxins (Health Canada) Toxic cyanobacteria in water: A guide to their public health consequences, monitoring, and management (WHO) Cyanobacteria and Cyanotoxins: Information for Drinking Water Systems (EPA) Cyanobacteria Are Far From Just Toledo's Problem By Carl Zimmer, Aug. 7, 2014(The New York Times)
In late summer 2016, the Wallkill River Watershed Alliance, along with Riverkeeper, documented a potentially toxic large blue-green algae bloom, prompting the two groups to warn that could be harmful to people, dogs or other pets. [9]