DOI: 10.5061/dryad.m35n6
title: Data from: The bacterial community structure and functional profile in the heavy metal contaminated paddy soils,surrounding a nonferrous smelter in South Korea

description: The pollution of agricultural soils by the heavy metals affects the
 productivity of the land and has an impact on the quality of the
 surrounding ecosystems. The present study investigated the bacterial
 community structure in the heavy metal contaminated sites along a smelter
 and a distantly located paddy field to elucidate the factors that are
 related to the alterations of the bacterial communities under the
 conditions of heavy metal pollution. Among the study sites, the bacterial
 communities in the soil did not show any significant differences in their
 richness and diversity. The soil bacterial communities at the three study
 sites were distinct from one another at each site, possessing a distinct
 set of bacterial phylotypes. Among the study sites, significant changes
 were observed in the abundances of the bacterial phyla and genera. The
 variations in the bacterial community structure were mostly related to the
 general soil properties at the phylum level, while at the finer taxonomic
 levels, the concentrations of arsenic (As) and lead (Pb) were the
 significant factors, affecting the community structure. The relative
 abundances of the genera Desulfatibacillum and Desulfovirga were
 negatively correlated to the concentrations of As, Pb, and cadmium (Cd) in
 the soil, while the genus Bacillus was positively correlated to the
 concentrations of As and Cd. According to the results of the prediction of
 bacterial community functions, the soil bacterial communities of the heavy
 metal polluted sites were characterized by the more abundant enzymes,
 involved in DNA replication and repair, translation, transcription, and
 the nucleotide metabolism pathways, while the amino acid and lipid
 metabolism, as well as the biodegradation potential of xenobiotics, were
 reduced. Our results showed that the adaptation of the bacterial
 communities to the heavy metal contamination was predominantly attributed
 to the replacement process, while the changes in community richness were
 linked to the variations in the soil pH values.
description: Effect of heavy metal
 contamination on bacterial community structure in paddy fields of South
 KoreaSoils were collected
 along the vicinity of a copper and gold smelter in Janghang town located
 in Seocheon County in South Chungcheong Province,South Korea. Soil samples
 were collected at a depth of 0-30 cm from paddy soils located at three
 different locations and were named based on their distances from the
 refinery center. Site 1 was located 260 m from the smelter and contained
 significantly high levels of arsenic. Site 2 was located 240 m from the
 smelter and had been designated as part of an initial phytoremediation
 project.Site 3 consisted of rice paddy soil located 3500 m from the
 smelter and represented an area of low contamination. Soil sampling was
 done from three randomly selected areas within each site. Each area
 represented a replicate sample of a single site, and consisted of top and
 subsoils from three adjacent spots which were approximately 1 m away from
 each other.The three subsamples were mixed together to make it one
 composite sample for each site.Thus S1-1,S1-2 and S1-3 are replicate
 samples from Site 1,S2-1,S2-2 and S2-3 are replicate samples from Site 2
 and S3-1,S3-2 and S3-3 are replicate samples from Site
 3.Janghang
 Korea Dataset.zip