باستانیان

Also known as Archaebacteria, Archaeobacteria, Archaeans, Archaeon

Archaea ( ) is a domain of organisms. Traditionally, Archaea included only its prokaryotic members, but has since been found to be paraphyletic, as eukaryotes are known to have evolved from archaea. Even though the domain Archaea cladistically includes eukaryotes, the term archaea ( ; ) in English still generally refers specifically to prokaryotic members of Archaea.

OverviewAI-generated

Archaea is a taxon within the domain and kingdom ranks, classified as a subclass of microorganism. It was discovered by Carl Woese and George E. Fox, with its authority established by Woese, Kandler & Wheelis in 1990. The taxonomic type for this group is Methanobacterium. It reproduces via binary fission and moves by rolling. The organism is subject to the International Code of Nomenclature of Prokaryotes.

Archaea inhabit marine, brackish, and freshwater environments. They have been present since about 3500 million years ago. The group is recognized as accepted by the World Register of Marine Species. Common names for Archaea include Archaebakterie, عتائق, Arxeya, and Археи. In Japanese, it is referred to as 古細菌ドメイン.

Records indicate 40,662 PubMed entries and 46 iDigBio records from institutions in South Africa, the United States, and Madagascar. The taxon is referenced by 2,318 other encyclopedia articles. It appears on the Wikipedia list of vital articles and has a Commons category.

Synthesized by Vinony from 30 facts across 5 sources: Wikidata, PubMed, iDigBio, WoRMS, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Species

古細菌ドメイン

Kingdom

Habitatmarine, brackish, freshwater

The existence of archaea in the oceans has been known for a long time. However, they were only discovered in the North Sea in the beginning of the 21st century. Archaea resemble normal bacteria, but are very different internally. They can live under extreme conditions: there are archaea known to live in boiling water! Archaea play an important role in the nitrogen cycle in the North Sea. These organisms are capable of changing ammonia into nitrite. One liter of seawater by Texel contains 5 to 45 million archaea. They are found particularly in the winter, when there is too little light for algae to grow.

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