Population explosion of organisms that can kill marine life
"Red tide" redirects here. For the athletic programs of the University of Alabama, see Alabama Crimson Tide.
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, mechanical damage to other organisms, or by other means. HABs are sometimes defined as only those algal blooms that produce toxins, and sometimes as any algal bloom that can result in severely lower oxygen levels in natural waters, killing organisms in marine or fresh waters.[1] Blooms can last from a few days to many months. After the bloom dies, the microbes that decompose the dead algae use up more of the oxygen, generating a "dead zone" which can cause fish die-offs. When these zones cover a large area for an extended period of time, neither fish nor plants are able to survive. Harmful algal blooms in marine environments are often called "red tides".[2][3]
It is sometimes unclear what causes specific HABs as their occurrence in some locations appears to be entirely natural,[4] while in others they appear to be a result of human activities.[5] In certain locations there are links to particular drivers like nutrients, but HABs have also been occurring since before humans started to affect the environment. HABs are induced by eutrophication, which is an overabundance of nutrients in the water. The two most common nutrients are fixed nitrogen (nitrates, ammonia, and urea) and phosphate.[6] The excess nutrients are emitted by agriculture, industrial pollution, excessive fertilizer use in urban/suburban areas, and associated urban runoff. Higher water temperature and low circulation also contribute.[citation needed]
HABs can cause significant harm to animals, the environment and economies. They have been increasing in size and frequency worldwide, a fact that many experts attribute to global climate change. The U.S. National Oceanic and Atmospheric Administration (NOAA) predicts more harmful blooms in the Pacific Ocean.[7] Potential remedies include chemical treatment, additional reservoirs, sensors and monitoring devices, reducing nutrient runoff, research and management as well as monitoring and reporting.[citation needed]
Terrestrial runoff, containing fertilizer, sewage and livestock wastes, transports abundant nutrients to the seawater and stimulates bloom events. Natural causes, such as river floods or upwelling of nutrients from the sea floor, often following massive storms, provide nutrients and trigger bloom events as well. Increasing coastal developments and aquaculture also contribute to the occurrence of coastal HABs.[2][3] Effects of HABs can worsen locally due to wind driven Langmuir circulation and their biological effects.
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^J. Heisler; P.M. Glibert; J.M. Burkholder; D.M. Anderson; W. Cochlan; W.C. Dennison b; Q. Dortch; C.J. Gobler; C.A. Heil; E. Humphries; A. Lewitus; R. Magnien; H.G. Marshallm; K. Sellner; D.A. Stockwell; D.K. Stoecker; M. Suddleson (2008). "Eutrophication and harmful algal blooms: A scientific consensus". Harmful Algae. 8 (1): 3–13. doi:10.1016/j.hal.2008.08.006. PMC 5543702. PMID 28781587.
^ abAnderson, Donald M.; Glibert, Patricia M.; Burkholder, Joann M. (August 2002). "Harmful algal blooms and eutrophication: Nutrient sources, composition, and consequences". Estuaries. 25 (4): 704–726. doi:10.1007/BF02804901. S2CID 44207554. Retrieved 7 April 2021.
^ abHall, Danielle. "What Exactly Is a Red Tide?". Smithsonian. Retrieved 7 April 2021.
^Cite error: The named reference :2 was invoked but never defined (see the help page).
^Cite error: The named reference :3 was invoked but never defined (see the help page).
^"Harmful Algal Blooms". CDC. 9 March 2021.
^Harvey, Chelsea (2016-09-29). "The Pacific blob caused an "unprecedented" toxic algal bloom — and there's more to come". Washington Post.
and 28 Related for: Harmful algal bloom information
A harmfulalgalbloom (HAB), or excessive algae growth, is an algalbloom that causes negative impacts to other organisms by production of natural algae-produced...
water. Blooms that can injure animals or the ecology, especially those blooms where toxins are secreted by the algae, are usually called "harmfulalgal blooms"...
visible coloration of the water, colloquially known as red tide (a harmfulalgalbloom), which can cause shellfish poisoning if humans eat contaminated...
being introduced. Some harmfulalgalblooms resulting from eutrophication, are toxic to plants and animals. Freshwater algalblooms can pose a threat to...
and lipids) derived from sources such as the offshore breakdown of algalblooms. These compounds can act as surfactants or foaming agents. As the seawater...
a few days, but blooms can last weeks. While some of these blooms are harmless, others fall into the category of harmfulalgalblooms, or HABs. HABs can...
distinguishes it from a red tide, which is an algalbloom whose toxins lead to harmful effects in people. Although no harmful effects are known, it is recommended...
The HarmfulAlgalBloom and Hypoxia Research and Control Amendments Act of 2014 (S. 1254; Pub. L.Tooltip Public Law (United States) 113–121 (text) (PDF))...
Viruses are the main agents responsible for the rapid destruction of harmfulalgalblooms which often kill other marine life. The number of viruses in the...
Katherine; Fino, Danielle; Shepherd, Adam (2007). "Harmful Algae". US National Office for HarmfulAlgalBlooms. Archived from the original on 5 December 2008...
efficiency. Phytoplankton blooms in which a species increases rapidly under conditions favorable to growth can produce harmfulalgalblooms (HABs). Phytoplankton...
frequent harmfulalgalblooms. Also, during droughts, surface waters are even more susceptible to harmfulalgalblooms and microorganisms. Algalblooms increase...
Microcystis is a genus of freshwater cyanobacteria that includes the harmfulalgalbloom-forming Microcystis aeruginosa. Many members of a Microcystis community...
contributors to global carbon and nitrogen fluxes. Some cyanobacteria form harmfulalgalblooms causing the disruption of aquatic ecosystem services and intoxication...
the Clean Water Act. In recent years, the lake has been prone to harmfulalgalblooms or HABs. Utah Lake is managed cooperatively by the Utah Division...
more phosphorus into the lake, enabling harmfulalgalbloom. Along with this algalbloom in 2016, other algalblooms have been found to occur in relation...
alga that episodically forms toxic surface aggregations known as harmfulalgalbloom. The species name akashiwo is from the Japanese for "red tide". Synonyms...
availability. Additionally, harmfulalgalblooms (HABs) can negatively impact many planktivores and can transfer harmful toxins from the phytoplankton...
activities and the red tide outbreak. Evidence from Comau Fiord where a HarmfulAlgalBloom caused a mass die of cold water coral reefs was directly linked to...
these regions, and adding it can lead to the formation of phytoplankton algalblooms. Iron primarily reaches the ocean through the deposition of dust on the...
"Pelagic harmfulalgalblooms and climate change: Lessons from nature's experiments with extremes". Harmful Algae. Climate change and harmfulalgalblooms. 91:...
bahamense variety was nontoxic and found in the Atlantic, but a 1972 toxic algalbloom of Pyrodinium bahamense in Papua New Guinea showed this was not the case...
nutrient pollution and feed the algae. This leads to eutrophication and harmfulalgalbloom. Many countries have banned the use of phosphates in detergent, including...
Birgit (2015). "Cyanobacteria and Algae Blooms: Review of Health and Environmental Data from the HarmfulAlgalBloom-Related Illness Surveillance System (HABISS)...
environmental concerns. These include eutrophication of surface waters, harmfulalgalblooms, hypoxia, acid rain, nitrogen saturation in forests, and climate...
order of cyanobacteria in some classifications which includes the harmfulalgalbloom Microcystis aeruginosa. Molecular data indicate that Chroococcales...
"Chapter 10: HarmfulAlgalBloom Dynamics in Relation to Physical Processes" page 130 In Granéli, E. and Turner, J. T. (2008) Ecology of Harmful Algae Springer...
cyanobacteria that can form harmfulalgalblooms of economic and ecological importance. They are the most common toxic cyanobacterial bloom in eutrophic fresh...