趋磁性细菌分布范围很广，在湖泊和池塘底部的沉积物和沿海区域均有分布。
They exist all over the globe, living in lake and pond sediments and in ocean coastal regions.
这种物种称为沿岸拟仙女虫(Paranais litoralis)，属于一种名为贫毛类(naidids)古老蠕虫家族的一部分，通常栖息在溪流池塘边沿的松软沉积物中。
That species, Paranais litoralis, is part of an ancient family of worms called naidids that settle in thesoft sediments alongside streams and ponds.
利用甲醇、H_2+CO_2或乙酸盐作为碳源和能源，从池塘的沉积物取样，经过反复的富集和分离，得到了甲烷八叠球菌的纯培养物。
Samples from pond sediments were inoculated to obtain the pure culture of Methanosarcina sp. by repeated enriching and isolating. Growth was fasted on H_2+CO_2 or methanol.
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