Figure 5
From: Soil bacterial and fungal communities across a pH gradient in an arable soil
The relationships between relative abundances of three abundant fungal sequences and soil pH. The fungal sequences include one with an average sequence similarity of 99.8% to accession number DQ471005 of the Silva database, a Helotiales (a), one with an average similarity of 99.6% to accession number AY526489, a Hypocreales (b), and one with an average similarity of 99.0% to accession number AJ319755, a mitosporic basidiomycete (c). Linear regressions were used to test the relationship between relative abundances and pH. To avoid the possible confounding substrate influence below pH 4.5, due to impeded plant growth below this pH (see Discussion section), only data points between pH 4.5 and 8.3 (filled circles) were used for the analyses, and data points below pH 4.5 (open circles) were excluded.
