scholarly journals Land use change alters functional gene diversity, composition and abundance in Amazon forest soil microbial communities

2014 ◽  
Vol 23 (12) ◽  
pp. 2988-2999 ◽  
Author(s):  
Fabiana S. Paula ◽  
Jorge L. M. Rodrigues ◽  
Jizhong Zhou ◽  
Liyou Wu ◽  
Rebecca C. Mueller ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Forest Soil ◽  
Gene Diversity ◽  
Soil Microbial Communities ◽  
Functional Gene ◽  
Amazon Forest ◽  
Soil Microbial ◽  
Functional Gene Diversity

scholarly journals Functional gene diversity of soil microbial communities from five oil-contaminated fields in China

2010 ◽  
Vol 5 (3) ◽  
pp. 403-413 ◽  
Author(s):  
Yuting Liang ◽  
Joy D Van Nostrand ◽  
Ye Deng ◽  
Zhili He ◽  
Liyou Wu ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Gene Diversity ◽  
Soil Microbial Communities ◽  
Functional Gene ◽  
Soil Microbial ◽  
Functional Gene Diversity

Effects of land use change on the composition of soil microbial communities in a managed subtropical forest

2016 ◽  
Vol 373 ◽  
pp. 93-99 ◽  
Author(s):  
Xiaoping Guo ◽  
Han Y.H. Chen ◽  
Miaojing Meng ◽  
Shekhar R. Biswas ◽  
Lixin Ye ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Soil Microbial Communities ◽  
Subtropical Forest ◽  
Soil Microbial ◽  
Effects Of Land Use

scholarly journals Deintensification of land use leads to recovery of soil microbial community composition and function after land use change in Ethiopia

2021 ◽  
Author(s):  
Yoseph Delelegn ◽  
Witoon Purahong ◽  
Ali Nawaz ◽  
Hans Sandén ◽  
Douglas Godbold ◽  
...  
Keyword(s):  
Land Use ◽  
Microbial Community ◽  
Land Use Change ◽  
Microbial Communities ◽  
Soil Microbial Community ◽  
Microbial Community Composition ◽  
Soil Microbial Communities ◽  
Natural Forest ◽  
Ecosystem Functions ◽  
Soil Microbial

Ethiopia has undergone significant land use change during the past centuries, particularly deforestation. These changes have resulted in the loss of topsoil as well as the associated soil ecosystem functions. Grazing exclusion and planting of eucalyptus are measures used to recover degraded lands and reduce deforestation, respectively. Using a gradient of the intensity of land use from natural forest to croplands, we investigated whether these measures also result in restoration of the soil microbial community. We identified the soil bacterial and fungal communities using paired-end amplicon sequencing. A total of 12,765 fungal and 12,325 bacterial OTUs were detected in the five land use types, and only ca. 2% and 17% were shared among the land uses, respectively. Total fungal and bacterial OTU richness was not significantly affected by land use change, but the conversion of forest to cropland resulted in the loss of approximately 40% and 11% of the total native fungal and bacterial OTUs, respectively. Soil pH, C, N, and aggregate stability were key factors corresponding to the overall bacterial and fungal community compositions. We also showed relationships between the microbial functional group and enzyme activities. The exclusion of grazing led to an enrichment of soil microbial communities that overlapped with the communities of the natural forest. Our results suggest that remnant native forests act as refugia for microbial communities and that restoration of microbial communities and concomitant recovery of ecosystem function via deintensification of land use is possible. Keywords: ectomycorrhiza, ericoid mycorrhiza, exclosure, microbial diversity, soil enzymes

scholarly journals Divergent Responses of Forest Soil Microbial Communities under Elevated CO2 in Different Depths of Upper Soil Layers

2017 ◽  
Vol 84 (1) ◽  
Author(s):  
Hao Yu ◽  
Zhili He ◽  
Aijie Wang ◽  
Jianping Xie ◽  
Liyou Wu ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Forest Soil ◽  
Forest Ecosystem ◽  
Soil Depth ◽  
Soil Microbial Communities ◽  
Functional Gene ◽  
Total Carbon ◽  
Functional Genes ◽  
Functional Markers ◽  
Soil Microbial

ABSTRACTNumerous studies have shown that the continuous increase of atmosphere CO2concentrations may have profound effects on the forest ecosystem and its functions. However, little is known about the response of belowground soil microbial communities under elevated atmospheric CO2(eCO2) at different soil depth profiles in forest ecosystems. Here, we examined soil microbial communities at two soil depths (0 to 5 cm and 5 to 15 cm) after a 10-year eCO2exposure using a high-throughput functional gene microarray (GeoChip). The results showed that eCO2significantly shifted the compositions, including phylogenetic and functional gene structures, of soil microbial communities at both soil depths. Key functional genes, including those involved in carbon degradation and fixation, methane metabolism, denitrification, ammonification, and nitrogen fixation, were stimulated under eCO2at both soil depths, although the stimulation effect of eCO2on these functional markers was greater at the soil depth of 0 to 5 cm than of 5 to 15 cm. Moreover, a canonical correspondence analysis suggested that NO3-N, total nitrogen (TN), total carbon (TC), and leaf litter were significantly correlated with the composition of the whole microbial community. This study revealed a positive feedback of eCO2in forest soil microbial communities, which may provide new insight for a further understanding of forest ecosystem responses to global CO2increases.IMPORTANCEThe concentration of atmospheric carbon dioxide (CO2) has continuously been increasing since the industrial revolution. Understanding the response of soil microbial communities to elevated atmospheric CO2(eCO2) is important for predicting the contribution of the forest ecosystem to global atmospheric change. This study analyzed the effect of eCO2on microbial communities at two soil depths (0 to 5 cm and 5 to 15 cm) in a forest ecosystem. Our findings suggest that the compositional and functional structures of microbial communities shifted under eCO2at both soil depths. More functional genes involved in carbon, nitrogen, and phosphorus cycling were stimulated under eCO2at the soil depth of 0 to 5 cm than at the depth of 5 to 15 cm.

Land-use change affects the functionality of soil microbial communities: A chronosequence approach in the Argentinian Yungas

2016 ◽  
Vol 108 ◽  
pp. 118-127 ◽  
Author(s):  
Micaela Tosi ◽  
Olga S. Correa ◽  
Marcelo A. Soria ◽  
Jimena A. Vogrig ◽  
Oksana Sydorenko ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Soil Microbial Communities ◽  
Soil Microbial ◽  
Chronosequence Approach

scholarly journals Associations between human impacts and forest soil microbial communities

Elem Sci Anth ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Yongjian Chen ◽  
Jialiang Kuang ◽  
Pandeng Wang ◽  
Wensheng Shu ◽  
Albert Barberán
Keyword(s):  
Microbial Communities ◽  
Forest Soil ◽  
Human Activity ◽  
Eastern China ◽  
Soil Microbial Communities ◽  
Nitrifying Bacteria ◽  
Rrna Gene ◽  
Internal Transcribed Spacer Region ◽  
Soil Microbial ◽  
Soil Variables

We are living in a new epoch—the Anthropocene, in which human activity is reshaping global biodiversity at an unprecedented rate. Increasing efforts are being made toward a better understanding of the associations between human activity and the geographic patterns in plant and animal communities. However, similar efforts are rarely applied to microbial communities. Here, we collected 472 forest soil samples across eastern China, and the bacterial and fungal communities in those samples were determined by high-throughput sequencing of 16S rRNA gene and internal transcribed spacer region, respectively. By compiling human impact variables as well as climate and soil variables, our goal was to elucidate the association between microbial richness and human activity when climate and soil variables are taken into account. We found that soil microbial richness was associated with human activity. Specifically, human population density was positively associated with the richness of bacteria, nitrifying bacteria and fungal plant pathogens, but it was negatively associated with the richness of cellulolytic bacteria and ectomycorrhizal fungi. Together, these results suggest that the associations between geographic variations of soil microbial richness and human activity still persist when climate and soil variables are taken into account and that these associations vary among different microbial taxonomic and functional groups.

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