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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.
In freshwater ecosystems, algal blooms are most commonly caused by high levels of nutrients (eutrophication). The blooms can look like foam, scum or mats or like paint floating on the surface of the water, but they are not always visible. Nor are the blooms always green; they can be blue, and some cyanobacteria species are coloured brownish-red.
Blue-green algae, known as cyanobacteria or harmful algal blooms (HABs), has been confirmed at Devils Lake in Manitou Beach, a news release from the Lenawee County Health Department said.
When visiting a lake or other body of water, be on the lookout for any yellow or red warning signs that will inform visitors of toxic algae and closures as well as algae blooms. Blue-green algae ...
Harmful Algal Blooms (EPA), n.d. retrieved 12 Nov 2018; 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)
Cloudy water can be a warning that there are more germs in the water than normal. Discolored or smelly water could mean there is a harmful algal bloom in the water.
Cyanophages can infect and kill four common bloom-forming cyanobacteria: Lyngbya birgei, Anabaena circinalis, Anabaena flosaquae, and Microcystis aeruginosa, [26] and thus may be able to prevent harmful algal blooms under normal conditions. Blooms cause problems ecologically, economically, and in freshwater systems, adversely affect the quality ...
A team of scientists at the University of Michigan are searching for pharmaceutical drugs in Lake Erie's harmful algae bloom. Here's what to know.