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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.
The EPA predicted in 2013 that climate change and changing environmental conditions may lead to harmful algae growth and may negatively impact human health. [20] Algal growth is also encouraged through the process of eutrophication (oversupply of nutrients). [7] In particular, dissolved reactive phosphorus promotes algal growth.
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.
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.
[7] [8] [3] The minimum cellular need for P in Gloeotrichia is approximately 2.3 g P/mg C, but actual uptake is 25-500e-6 g/L/day, compared to algae, which is normally 1-100e-6 g/L/day. [9] Once Gloeotrichia have stored enough P to sustain colonial formation and growth, they begin to form vacuoles filled with gas to increase their buoyancy and ...
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