Domain Archaea

Most archaea inhabit extreme environments of Earth.

Groups of Archaea:Methanogens, Extreme halophiles,

Extreme thermophiles

Methanogens

-Unique form of energy metabolism

-Poisoned by oxygen

-Live in swamps & marshes (where all oxgen consmed by

microbes)

-Important decomposers

Extreme Halophiles

-Live in saline places

-Tolerate salinity, others require salinity enviornment

Extreme Thermophiles

-Live in hot environments

-Optimal conditions temp. 60 degrees C-80 degrees C