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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.
A very large algae bloom in Lake Erie, North America, which can be seen from space. An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in fresh water or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. [1]
Symptoms include but are not limited to: numbness in the extremities, olecranon bursitis or general inflammation, cutaneous infections in the hair, skin or fingernails, skin lesions, difficulty breathing, respiratory failure, multiple organ failure, and can result in death if not treated in the early stages of infection.
A biologist holds clumps of dulse seaweed grown by Cascadia Seaweed in British Columbia, Canada. The company is cultivating the algae for use as a feed additive and biostimulant in agriculture ...
The seaweed can choke corals, wreak havoc on coastal ecosystems and diminish air quality. A sargassum bloom floats between the Gulf of Mexico and West Africa. The seaweed can choke corals, wreak ...
The algae enters the body through the mouth or nose and causes infection in the intestines. From there it can spread to the eye, brain, and kidneys. Symptoms can include diarrhea , weight loss, weakness, inflammation of the eye ( uveitis ), retinal detachment , ataxia , and seizures .
Once the seaweed begins to rot, it releases a substance called hydrogen sulfide, which gives off an unpleasant odor similar to rotting eggs. While it may be smelly, for the most part sargassum isn ...
Other seaweed may be used as fertilizer, compost for landscaping, or to combat beach erosion through burial in beach dunes. [54] Seaweed is under consideration as a potential source of bioethanol. [55] [56] Seaweed is lifted out of the top of an algae scrubber/cultivator, to be discarded or used as food, fertilizer, or skin care.