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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, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
Multiple causes including global cooling, polar glaciation, falling sea levels, and the Popigai impactor [12] Cretaceous: Cretaceous–Paleogene extinction event: 66 Ma Chicxulub impactor; the volcanism which resulted in the formation of the Deccan Traps may have contributed. [13] Cenomanian-Turonian boundary event: 94 Ma
Karenia brevis is the causative agent of red tide, which occurs when the organism multiplies to higher than normal concentrations. During these events the water can take on a reddish or pinkish coloration, giving these explosions in the K. brevis population the name of Florida Red Tide.
Red tides in the Gulf of Mexico and toxic blue-green algae in inland waters are killing animals and stoking outrage in South Florida. 'Never seen it this bad': Toxic red tide hits Florida Skip to ...
Red tide blooms produce toxic chemicals that can affect both marine organisms and humans. The Florida red tide organism, known as K. brevis, produces brevetoxins that can affect the central ...
Stylized photograph of a barricade on May 6, 2016 just north of Castro.. The red tide crisis in Chiloé, also known as "Chilote May" (Spanish: Mayo chilote), was a social, economic and environmental catastrophe that occurred in the Chiloé Archipelago, southern Chile, in the southern autumn of 2016, as a result of a severe algal bloom of the dinoflagellate Alexandrium catenella — a ...
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] Scientists claim this is a seasonal occurrence.
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another.