Extended Data Fig. 1: Geochemical profiles of the permanently moist and organic-rich wetland soils.
From: Borgs are giant genetic elements with potential to expand metabolic capacity

(A) The mean concentrations of total carbon, nitrogen as well as (B) iron and manganese in wetland soils at 20 cm (n = 3), 40 cm (n = 5), and 90 cm (n = 2) where n denotes the number of biological samples. Deeper soils, where these extrachromosomal elements are most abundant, are somewhat depleted in carbon, iron and manganese compared to shallow soils. Error bars denote standard deviation. 36 samples were collected and sequenced, with 1 to 10 independent samples collected from the same soil depth.