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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.
Blooms are most often associated with summer months, and some areas may see two blooms within one year. [7] Blooms are known to be lethal once concentrations of cells reach 3x10 5 to 7 x 10 5 cells/L. [ 7 ] Viruses may act as a natural control on bloom populations, as H. akashiwo viruses (HaV) have been shown to only leave resistant alga alive ...
Algal blooms, especially large algal bloom events, can reduce the transparency of the water and can discolor the water. [2] The photosynthetic pigments in the algal cells, like chlorophyll and photoprotective pigments, determine the color of the algal bloom. Depending on the organism, its pigments, and the depth in the water column, algal ...
Death notices are provided to The News Tribune once per month by the Tacoma-Pierce County Health Department.
Investigations into anatoxin-a, also known as "Very Fast Death Factor", began in 1961 following the deaths of cows that drank from a lake containing an algal bloom in Saskatchewan, Canada. [ 41 ] [ 42 ] The toxin is produced by at least four different genera of cyanobacteria and has been reported in North America, Europe, Africa, Asia, and New ...
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The Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2014 (S. 1254; Pub. L. 113–121 (text)) is a U.S. public law that reauthorizes and modifies the Harmful Algal Bloom and Hypoxia Research and Control Act of 1998 and would authorize the appropriation of $20.5 million annually through 2018 for the National Oceanic and Atmospheric Administration (NOAA) to mitigate the ...
A Texas teen died after the state’s ban on abortion stopped her from getting life-saving medical care while experiencing pregnancy complications. On October 28, 2023, the day of her baby shower ...