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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 impact of harmful algae blooms on the environment have a substantial effect on marine life. For example, in August 2024 the growth of the toxic algae, Pseudo-nitzschia , along California coasts were making sea lions sick and aggressive to beach goers. [ 44 ]
Like true algae, cyanobacteria are photosynthetic and contain photosynthetic pigments, which is why they are usually green or blue. Cyanobacteria are found almost everywhere; in oceans, lakes and rivers as well as on land. They flourish in Arctic and Antarctic lakes, [23] hotsprings [24] and wastewater treatment plants. [25]
Harmful algae blooms, where toxins are released, are a public health threat and severely damage water quality in parts of the Great Lakes, like Lake Erie and the lower bay of Green Bay.
Blue-green algae, also known as cyanobacteria, typically grows in lakes, rivers, ponds, estuaries and marine water, according to the Washington State Department of Health, but not all blooms are ...
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 ...
If you have other health questions or concerns about blue-green algae blooms, please call the Florida Department of Health in Okeechobee County at 772-873-4927.
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.