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Audouinella. Bory de Saint-Vincent. Audouinella, also known as black algae, [1] is a widespread genus of red algae, found in marine and freshwater environments. [2] The form known as " black brush algae " (or " black beard algae ", BBA for short) is a particular nuisance in aquaria, since most algae eater fish and invertebrates avoid it. [3]
Typically excluded. Cyanobacteria (blue-green algae) Embryophyta (land plants) Algae (UK: / ˈælɡiː / AL-ghee, US: / ˈældʒiː / AL-jee; [3] sg.: alga / ˈælɡə / AL-gə) is an informal term for any organisms of a large and diverse group of photosynthetic eukaryotes, which include species from multiple distinct clades.
Cyanobacteria are ubiquitous in marine environments and play important roles as primary producers. They are part of the marine phytoplankton, which currently contributes almost half of the Earth's total primary production. [33] About 25% of the global marine primary production is contributed by cyanobacteria.
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.
Algae (UK: / ˈælɡiː / AL-ghee, US: / ˈældʒiː / AL-jee; sg.: alga / ˈælɡə / AL-gə) are any of a large and diverse group of photosynthetic, eukaryotic organisms. The name is an informal term for a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as ...
Green spot algae (GSA), most likely of the genus Coleochaete, is a spot-forming algae that slowly covers glass, aquarium furniture, and plants. It adheres strongly and is considered difficult to remove. [4] It may be a symptom of low phosphate and carbon dioxide levels in the water. However, GSA is typically a sign of a healthy aquarium and is ...
The algae's black color is unusual for marine algae, [5] which are typically shades of green or red. [4] Several hypotheses have been put forth about the cause of this color. Terry Whitledge, director of the Institute of Marine Science at the University of Alaska Fairbanks , postulated that it could be due to the algae having undergone some ...
Mesodinium rubrum (or Myrionecta rubra) is a species of ciliates. [1] It constitutes a plankton community and is found throughout the year, most abundantly in spring and fall, in coastal areas. Although discovered in 1908, its scientific importance came into light in the late 1960s when it attracted scientists by the recurrent red colouration ...