Biogeographical patterns of soil bacterial communities

Dequiedt, Samuel; Thioulouse, Jean; Jolivet, Claudy; Saby, Nicolas P.A.; Lelièvre, Mélanie; Maron, Pierre‐Alain; Martín, Manuel; Prévost-Bouré, Nicolas Chemidlin; Toutain, Benoit B.; Arrouays, Dominique; Lemanceau, Philippe; Ranjard, Lionel

doi:10.1111/j.1758-2229.2009.00040.x

Cited by 74 publications

(64 citation statements)

References 15 publications

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“…The size and shape of the neighbourhood was in agreement with previous spatial analyses of habitat and genetic data that demonstrated significant spatial structures 27 when the radius was at least 140 km ( Table 2). As all the parameters are estimated with errors, the relationships were best modelled by a type II linear regression model (ordinary least squares method).…”

Section: Methodssupporting

confidence: 90%

“…Recent microbial biogeography studies have revealed that the main environmental filters shaping spatial microbial diversity distribution are soil physico-chemical characteristics, land use and plant cover, whereas climatic and geomorphologic filters are less important 9,11,15,37 . Similar filters were also reported to explain soil bacterial community distribution in contrasted ecological regions at the scale of France 27,34 .…”

Section: Discussionsupporting

confidence: 78%

“…To achieve this goal, the statistical confrontation of z bacteria and z habitat was performed by systematically defining TAR and HAR in a neighbourhood corresponding to a circular sliding window of 280 km diameter, centred on each of the 2,085 RMQS sites. The window size was deduced from the size of spatial structures of bacteria and habitat identified by the experimental variograms on the scale of France (Table 2) 27 . The range of variations in z bacteria and z habitat could thus be determined and showed that z bacteria ranged from À 0.003 to þ 0.021 (mean ¼ 0.008, median ¼ 0.009), whereas z habitat ranged from À 0.002 to 0.131.…”

Section: Resultsmentioning

confidence: 99%

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Turnover of soil bacterial diversity driven by wide-scale environmental heterogeneity

et al. 2013

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Spatial scaling and determinism of the wide-scale distribution of macroorganism diversity has been largely demonstrated over a century. For microorganisms, and especially for soil bacteria, this fundamental question requires more thorough investigation, as little information has been reported to date. Here by applying the taxa-area relationship to the largest spatially explicit soil sampling available in France (2,085 soils, area covered B5.3 Â 10 5 km 2 ) and developing an innovative evaluation of the habitat-area relationship, we show that the turnover rate of bacterial diversity in soils on a wide scale is highly significant and strongly correlated with the turnover rate of soil habitat. As the diversity of micro-and macroorganisms appears to be driven by similar processes (dispersal and selection), maintaining diverse and spatially structured habitats is essential for soil biological patrimony and the resulting ecosystem services.

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Section: Methodssupporting

confidence: 90%

Section: Discussionsupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

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Turnover of soil bacterial diversity driven by wide-scale environmental heterogeneity

et al. 2013

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“…To increase our understanding of the mechanisms driving the distribution of microorganisms and the processes shaping these communities, characterization of their spatial patterns at various scales has become of great interest. Spatial analysis of microbial diversity have revealed a significant effect of distance on the taxa distribution of soil microorganisms ranging from a few centimeters to meters and even kilometer at the landscape scale (Franklin and Mills, 2003;Ritz et al, 2004;Dequiedt et al, 2009;Philippot et al, 2009a). However, Green et al (2008) recently underlined the importance of focusing on trait-based rather than taxonomic biogeography in microbial ecology similar to what has been done for example in plant ecology (Enquist et al, 2007;Savage et al, 2007).…”

Section: Introductionmentioning

confidence: 96%

Spatial distribution of ammonia-oxidizing bacteria and archaea across a 44-hectare farm related to ecosystem functioning

et al. 2011

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Characterization of spatial patterns of functional microbial communities could facilitate the understanding of the relationships between the ecology of microbial communities, the biogeochemical processes they perform and the corresponding ecosystem functions. Because of the important role the ammonia-oxidizing bacteria (AOB) and archaea (AOA) have in nitrogen cycling and nitrate leaching, we explored the spatial distribution of their activity, abundance and community composition across a 44-ha large farm divided into an organic and an integrated farming system. The spatial patterns were mapped by geostatistical modeling and correlations to soil properties and ecosystem functioning in terms of nitrate leaching were determined. All measured community components for both AOB and AOA exhibited spatial patterns at the hectare scale. The patchy patterns of community structures did not reflect the farming systems, but the AOB community was weakly related to differences in soil pH and moisture, whereas the AOA community to differences in soil pH and clay content. Soil properties related differently to the size of the communities, with soil organic carbon and total nitrogen correlating positively to AOB abundance, while clay content and pH showed a negative correlation to AOA abundance. Contrasting spatial patterns were observed for the abundance distributions of the two groups indicating that the AOB and AOA may occupy different niches in agro-ecosystems. In addition, the two communities correlated differently to community and ecosystem functions. Our results suggest that the AOA, not the AOB, were contributing to nitrate leaching at the site by providing substrate for the nitrite oxidizers.

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“…pH, the amount of soil contaminants or salts) and the physical properties of soils such as porosity and bulk density, both of which are affected by compaction or sealing. However in the last years, several studies on soil biodiversity have been started, allowing a better comprehension of the biogeography of soil organisms (Dequiedt et al, 2009;Cluzeau et al, 2009;Griffiths et al, 2011). Other recent research has targeted the investigation of the relationships between soil parameters, land management practices and soil biodiversity patterns (Gardi et al, 2008;Bru et al, 2011;Dequiedt et al, 2011;Keith et al, 2011), while other investigations are more focused on the contribution of soil biota to the provision of ecosystem services (Mulder et al, 2011).…”

Section: Tartes) 4th Row -Fruiting Bodies Of a Myxomycete (Slime Moumentioning

confidence: 99%

Winter cover crops as green manure in a temperate region: the effect on nitrogen budget and yield of silage maize

et al. 2017

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Winter cover crops may provide different environmental benefits in agricultural systems. The aim of this study was to determine the effect of cover crops used as green manure on the soil nitrogen (N) budget and yield of silage maize (Zea mays L.). A field experiment was conducted between 2011 and 2013 at three locations in Vojvodina Province, Serbia. It compared common vetch (Vicia sativa L.), triticale (× Triticosecale Wittm. ex A. Camus), their mixture grown as cover crops, N fertilisation at two doses (N1 and N2), and an unfertilised fallow as a control. Cover crops were sown in autumn 2011 and 2012 and were ploughed in during May of the year after which silage maize was sown. Results show that the ability of cover crops to provide benefit for a subsequent crop is highly related to weather conditions, mainly precipitation. The two years of the study experienced completely different weather conditions, showing two aspects of how cover crops can affect subsequent crop yield and amount of N left in the soil. In 2012, the N budget was higher in all three cover crops at all locations than N1 and the control because of unfavourable weather conditions for mineralisation of organic matter. However, the cover crops had a negative effect on silage maize yield. In 2013 (an average year), the N budget was significantly higher after cover crops, and was followed by a higher yield of silage maize. Based on the 2-year average, the highest value of apparent N remaining in the soil was recorded in the mixture treatment (288.13 kg N ha–1); treatments with vetch and triticale had approximately equal values (272.17 and 272.71 kg N ha–1). The N fertilisation treatments and the control had significantly lower average values of residual N.

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Biogeographical patterns of soil bacterial communities

Cited by 74 publications

References 15 publications

Turnover of soil bacterial diversity driven by wide-scale environmental heterogeneity

Turnover of soil bacterial diversity driven by wide-scale environmental heterogeneity

Spatial distribution of ammonia-oxidizing bacteria and archaea across a 44-hectare farm related to ecosystem functioning

Winter cover crops as green manure in a temperate region: the effect on nitrogen budget and yield of silage maize

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