Journal ArticleDOI
Land-use history has a stronger impact on soil microbial community composition than aboveground vegetation and soil properties
Kamlesh Jangid,Mark A. Williams,Alan J. Franzluebbers,Thomas M. Schmidt,David C. Coleman,William B. Whitman +5 more
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TLDR
History of land-use was a stronger determinant of the composition of microbial communities than vegetation and soil properties, and microbial communities in disturbed soils apparently return to their native state with time.Abstract:
The response of soil microbial communities following changes in land-use is governed by multiple factors. The objectives of this study were to investigate (i) whether soil microbial communities track the changes in aboveground vegetation during succession; and (ii) whether microbial communities return to their native state over time. Two successional gradients with different vegetation were studied at the W. K. Kellogg Biological Station, Michigan. The first gradient comprised a conventionally tilled cropland (CT), mid-succession forest (SF) abandoned from cultivation prior to 1951, and native deciduous forest (DF). The second gradient comprised the CT cropland, early-succession grassland (ES) restored in 1989, and long-term mowed grassland (MG). With succession, the total microbial PLFAs and soil microbial biomass C consistently increased in both gradients. While bacterial rRNA gene diversity remained unchanged, the abundance and composition of many bacterial phyla changed significantly. Moreover, microbial communities in the relatively pristine DF and MG soils were very similar despite major differences in soil properties and vegetation. After >50 years of succession, and despite different vegetation, microbial communities in SF were more similar to those in mature DF than in CT. In contrast, even after 17 years of succession, microbial communities in ES were more similar to CT than endpoint MG despite very different vegetation between CT and ES. This result suggested a lasting impact of cultivation history on the soil microbial community. With conversion of deciduous to conifer forest (CF), there was a significant change in multiple soil properties that correlated with changes in microbial biomass, rRNA gene diversity and community composition. In conclusion, history of land-use was a stronger determinant of the composition of microbial communities than vegetation and soil properties. Further, microbial communities in disturbed soils apparently return to their native state with time.read more
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Dynamics of water-stable aggregates associated organic carbon assessed from delta C-13 changes following temperate natural forest development in China
TL;DR: In this paper, the authors examined the variation of soil aggregate associated organic carbon decomposition rates, quantify the changes in the proportion of new and old soil aggregate OC, and explore the effects of controlling factors on SOC stocks, rate of total organic carbon increase and decomposition rate constants.
Journal ArticleDOI
Soil microbial community assembly precedes vegetation development after drastic techniques to mitigate effects of nitrogen deposition
TL;DR: This article assessed the effects of sod-cutting and topsoil removal along with the influence of previous land-use, isolation and vegetation development on subsequent microbial community assembly in restored agricultural areas.
Journal ArticleDOI
Riparian research and legislation, are they working towards the same common goals? A UK case study.
TL;DR: In this paper, a review brings together current EU and UK legislation alongside research publications focused on riparian areas and identifies key scientific knowledge gaps which need to be addressed to support future decision-making.
Journal ArticleDOI
Agricultural management practices influence the soil enzyme activity and bacterial community structure in tea plantations
Yu-Pei Chen,Chia-Fang Tsai,P. D. Rekha,Sudeep D. Ghate,Hsi-Yuan Huang,Yi-Han Hsu,Li-Ling Liaw,Chiu-Chung Young +7 more
TL;DR: In this paper, changes in soil properties, enzymatic activity, and dysbiosis in bacterial community composition were compared using three agricultural management practices, namely conventional (CA), sustainable (SA), and transformational agriculture (TA) in the tea plantation during 2016 and 2017 period.
Journal ArticleDOI
Soil microbial communities-mediated bioattenuation in simulated aquifer storage and recovery (ASR) condition: Long-term study.
Hien Thi Nguyen,Youngjae Kim,Jae Woo Choi,Jae Woo Choi,Seongpil Jeong,Seongpil Jeong,Kyungjin Cho,Kyungjin Cho +7 more
TL;DR: In this paper, the authors evaluated the long-term organic removal performance and microbial community shift in simulated aquifer storage and recovery (ASR) conditions, and the results showed that the assimilable organic carbon (AOC) concentration in the anoxic soil box systems was successfully decreased by 79.1%.
References
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Greengenes, a Chimera-Checked 16S rRNA Gene Database and Workbench Compatible with ARB
Todd Z. DeSantis,Philip Hugenholtz,Neils Larsen,Mark Rojas,Eoin L. Brodie,Keith Keller,Thomas Huber,Daniel Dalevi,Ping Hu,Gary L. Andersen +9 more
TL;DR: A 16S rRNA gene database (http://greengenes.lbl.gov) was used to provide chimera screening, standard alignment, and taxonomic classification using multiple published taxonomies as mentioned in this paper.
Journal ArticleDOI
The diversity and biogeography of soil bacterial communities
Noah Fierer,Robert B. Jackson +1 more
TL;DR: Bacterial diversity was highest in neutral soils and lower in acidic soils, with soils from the Peruvian Amazon the most acidic and least diverse in this study.
Journal ArticleDOI
Introducing DOTUR, a Computer Program for Defining Operational Taxonomic Units and Estimating Species Richness
Patrick D. Schloss,Jo Handelsman +1 more
TL;DR: A computer program, DOTUR, is developed, which assigns sequences to OTUs by using either the furthest, average, or nearest neighbor algorithm for each distance level, which addresses the challenge of assigning sequences to operational taxonomic units (OTUs) based on the genetic distances between sequences.
Journal ArticleDOI
Global patterns in bacterial diversity
Catherine A. Lozupone,Rob Knight +1 more
TL;DR: The most comprehensive analysis of the environmental distribution of bacteria to date, based on 21,752 16S rRNA sequences compiled from 111 studies of diverse physical environments, is reported in this article.
Journal ArticleDOI
The influence of soil properties on the structure of bacterial and fungal communities across land-use types
TL;DR: Soil pH was the best predictor of bacterial community composition across this landscape while fungal community composition was most closely associated with changes in soil nutrient status, suggesting specific changes in edaphic properties, not necessarily land-use type itself, may best predict shifts in microbialcommunity composition across a given landscape.
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