Phaeocystis is a genus of algae belonging to the Prymnesiophyte class and to the larger division of Haptophyta. It is a widespread marine phytoplankton and can function at a wide range of temperatures (eurythermal) and salinities (euryhaline). Members of this genus live in the open ocean, as well as in sea ice. It has a polymorphic life cycle, ranging from free-living cells to large colonies.
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| - Phaeocystis (de)
- Phaeocystales (es)
- Phaeocystis (fr)
- Phaeocystis (en)
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| - Phaeocystales es un orden de protistas del subfilo Haptophyta que comprende únicamente al género Phaeocystis. Son algas unicelulares que presentan una alternancia de generaciones entre etapas móviles e inmóviles. La etapa móvil tiene un tamaño de 3-10 µm, presenta dos flagelos y un apéndice corto denominado haptonema. La etapa inmóvil es colonial, está embebida en una matriz gelatinosa y puede alcanzar un tamaño de varios mm y ser visible a simple vista. La superficie celular está cubierta por placas orgánicas de dos tamaños diferentes y presentan de uno a cuatro cloroplastos. Phaeocystis produce regularmente floraciones en las que el material gelatinoso a menudo se acumula en las playas en forma de espuma. (es)
- Phaeocystis est un genre d'algues nanoplanctoniques marines de la classe des Prymnésiophycées. (fr)
- Phaeocystis ist eine Gattung von Algen, die zur Klasse der Prymnesiophyten (Prymnesiophyceae) und damit zum großen Phylum (Abteilung) der Haptophyten (Haptophyta) gehört.Phaeocystis-Arten sind im marinen Phytoplankton weit verbreitet und können in einem weiten Temperaturbereich („“) und Salzgehaltsbereich („euryhalin“) vorkommen.Mitglieder dieser Gattung leben sowohl im offenen Ozean als auch im Meereis. (de)
- Phaeocystis is a genus of algae belonging to the Prymnesiophyte class and to the larger division of Haptophyta. It is a widespread marine phytoplankton and can function at a wide range of temperatures (eurythermal) and salinities (euryhaline). Members of this genus live in the open ocean, as well as in sea ice. It has a polymorphic life cycle, ranging from free-living cells to large colonies. (en)
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| - Phaeocystis ist eine Gattung von Algen, die zur Klasse der Prymnesiophyten (Prymnesiophyceae) und damit zum großen Phylum (Abteilung) der Haptophyten (Haptophyta) gehört.Phaeocystis-Arten sind im marinen Phytoplankton weit verbreitet und können in einem weiten Temperaturbereich („“) und Salzgehaltsbereich („euryhalin“) vorkommen.Mitglieder dieser Gattung leben sowohl im offenen Ozean als auch im Meereis. Phaeocystis-Arten haben einen vielgestaltigen (polymorphen) Lebenszyklus, der von freilebenden Zellen bis zu großen Kolonien reicht. Auf diese Weise sind einige Arten von Phaecocystis in der Lage, schädliche (en. harmful algal blooms, HABs) zu bilden. (de)
- Phaeocystales es un orden de protistas del subfilo Haptophyta que comprende únicamente al género Phaeocystis. Son algas unicelulares que presentan una alternancia de generaciones entre etapas móviles e inmóviles. La etapa móvil tiene un tamaño de 3-10 µm, presenta dos flagelos y un apéndice corto denominado haptonema. La etapa inmóvil es colonial, está embebida en una matriz gelatinosa y puede alcanzar un tamaño de varios mm y ser visible a simple vista. La superficie celular está cubierta por placas orgánicas de dos tamaños diferentes y presentan de uno a cuatro cloroplastos. Phaeocystis produce regularmente floraciones en las que el material gelatinoso a menudo se acumula en las playas en forma de espuma. (es)
- Phaeocystis is a genus of algae belonging to the Prymnesiophyte class and to the larger division of Haptophyta. It is a widespread marine phytoplankton and can function at a wide range of temperatures (eurythermal) and salinities (euryhaline). Members of this genus live in the open ocean, as well as in sea ice. It has a polymorphic life cycle, ranging from free-living cells to large colonies. The ability to form a floating colony is one of the unique attributes of Phaeocystis – hundreds of cells are embedded in a polysaccharide gel matrix, which can increase massively in size during blooms. The largest Phaeocystis blooms form in the polar seas: P. pouchetii in the north and P. antarctica in the south. This intense Phaeocystis productivity generally persists for about a three-month period, spanning most of the summer in the Southern Hemisphere. Phaeocystis-abundant ecosystems are generally associated with commercially important stocks of crustaceans, molluscs, fish and mammals. Phaeocystis may have negative effects on higher trophic levels in the marine ecosystem, and consequent impacts on human activities (such as fish farming and coastal tourism), by forming odorous foams on beaches during the wane of a bloom. The ability to form large blooms and its ubiquity make Phaeocystis an important contributor to the ocean carbon cycle. In addition, Phaeocystis produces dimethyl sulfide (DMS), a key player in the sulfur cycle. (en)
- Phaeocystis est un genre d'algues nanoplanctoniques marines de la classe des Prymnésiophycées. (fr)
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