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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 ...
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 ...
While there are many different types of these HABs and the effects can vary, K. brevis is the causative agent of Florida Red Tides. Due to the toxin that K. brevis produces, these red tides can be detrimental to marine life and can even affect human populations along coasts where they occur. [16]
A Red tide is a discoloration of the sea water by pigmented cells like Gonyaulax spp., some of which may produce toxins. Gonyaulax spinifera has been connected to the production of yessotoxins (YTXs), a group of structurally related polyether toxins, which can accumulate in shellfish.
A 100-mile-long bloom of red tide is floating off Southwest Florida, prompting warnings about respiratory irritation and potential fish kills on area beaches. Experts say weather could be helping ...
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.
Red Tide caused by dinoflagellates. Picture taken off the coast of San Diego, California. Neurotoxic shellfish poisoning (NSP) is caused by the consumption of brevetoxins, which are marine toxins produced by the dinoflagellate Karenia brevis (among several others). These toxins can produce a series of gastrointestinal and neurological effects.
Marine protists are defined by their habitat as protists that live in marine environments, that is, in the saltwater of seas or oceans or the brackish water of coastal estuaries. Life originated as marine single-celled prokaryotes (bacteria and archaea) and later evolved into more complex eukaryotes. Eukaryotes are the more developed life forms ...