Soil microbial communities under model biofuel cropping systems in southern Wisconsin, USA: Impact of crop species and soil properties

Liang, Chao; Jesus, Ederson da Conceição; Duncan, David S.; Jackson, Randall D.; Tiedje, James M.; Balser, Teri C.

doi:10.1016/j.apsoil.2011.11.015

Cited by 82 publications

(74 citation statements)

References 42 publications

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“…Changes in the potential functional abilities of the soil microbial community may reflect changes in LUC or agricultural management and should be considered to assess the ecological impact of biomass crop production (Hedenec et al, 2014). Currently, few studies have assessed soil microbial community responses to PG biomass production systems (Hedenec et al, 2014;Liang et al, 2012;Mao et al, 2013Mao et al, , 2011Orr et al, 2015). The highest potential to reduce greenhouse gas emissions from biomass cropping systems is to produce crops with high yields, such as PGs (Sanscartier et al, 2014), which offset the amount of land required for crop production (Kludze et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…have been proposed as alternate feedstock crops to corn for biomass-based bioenergy production due to their large biomass yields, reduced nitrogen (N) and water requirements, decreased nutrient leaching, and potential for increased soil carbon (C) storage (BlancoCanqui and Lal, 2009;Foster et al, 2013). Large-scale production of C 4 PGs in Ontario and the northern Corn Belt would require land use change (LUC) from existing cornsoybean rotations to PG biomass cropping systems (Deen et al, 2011;Kludze et al, 2013;Liang et al, 2012;Sanscartier et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…LUC resulting from displacement of corn-soybean rotations by PG production may alter soil microhabitats and therefore soil microbial N-cycling due both to extensive root and rhizome biomass and to large leaf litter inputs to soils in perennial vs. annual systems (Dohleman et al, 2012). Within studies targeting soil microbial communities in biomass cropping systems to date (Hedenec et al, 2014;Liang et al, 2012;Mao et al, 2013Mao et al, , 2011Orr et al, 2015), the effects of various management practices (e.g. N fertilization and harvest) on soil microbial community functioning have not been an area of focus.…”

Section: Introductionmentioning

confidence: 99%

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Soil denitrifier community size changes with land use change to perennial bioenergy cropping systems

Thompson

Deen

Dunfield

2016

SOIL

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Abstract. Dedicated biomass crops are required for future bioenergy production. However, the effects of largescale land use change (LUC) from traditional annual crops, such as corn-soybean rotations to the perennial grasses (PGs) switchgrass and miscanthus, on soil microbial community functioning is largely unknown. Specifically, ecologically significant denitrifying communities, which regulate N 2 O production and consumption in soils, may respond differently to LUC due to differences in carbon (C) and nitrogen (N) inputs between crop types and management systems. Our objective was to quantify bacterial denitrifying gene abundances as influenced by corn-soybean crop production compared to PG biomass production. A field trial was established in 2008 at the Elora Research Station in Ontario, Canada (n = 30), with miscanthus and switchgrass grown alongside corn-soybean rotations at different N rates (0 and 160 kg N ha −1 ) and biomass harvest dates within PG plots. Soil was collected on four dates from 2011 to 2012 and quantitative PCR was used to enumerate the total bacterial community (16S rRNA) and communities of bacterial denitrifiers by targeting nitrite reductase (nirS) and N 2 O reductase (nosZ) genes. Miscanthus produced significantly larger yields and supported larger nosZ denitrifying communities than corn-soybean rotations regardless of management, indicating large-scale LUC from corn-soybean to miscanthus may be suitable in variable Ontario climatic conditions and under varied management, while potentially mitigating soil N 2 O emissions. Harvesting switchgrass in the spring decreased yields in N-fertilized plots, but did not affect gene abundances. Standing miscanthus overwinter resulted in higher 16S rRNA and nirS gene copies than in fall-harvested crops. However, the size of the total (16S rRNA) and denitrifying bacterial communities changed differently over time and in response to LUC, indicating varying controls on these communities.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil denitrifier community size changes with land use change to perennial bioenergy cropping systems

Thompson

Deen

Dunfield

2016

SOIL

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“…It was used to quantify the relationship between the response variable values (heavy metals), the environmental variable gradients and samples. The resulting ordination diagram shows sites as points, and heavy metals and environmental factors as vectors whose magnitude and angle indicate statistical significance and magnitude of the correlations with an ordination axis or another vector (Liang et al, 2012). The proportion of heavy metal variations explained by the environmental variables is the canonical equivalent of the regression coefficient of determination, R 2 (Peres-Neto et al, 2006).…”

Section: Redundancy (Rda) Analysismentioning

confidence: 99%

Spatio-temporal Variability of Heavy Metal Concentrations in Soil-rice System and Its Socio-environmental Analysis

Qin¹,

Jabeen

ImranHaider³

et al. 2016

IJAB

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To cite this paper: Song, Q., S. Jabeen, I.H. Shamsi, Z. Zhu, X. Liu and P.C. Brookes, 2016. Spatio-temporal variability of heavy metal concentrations in soilrice system and its socio-environmental analysis. was used to provide a survey of variations in soil metal concentrations and then interpreted by consideration of soil properties and socio-economical observations. It was concluded that Zn concentration was related to the rapid development of local industry. The socio-environmental factors explained 43.3% of the variations in metal concentrations in soil. This study demonstrates the situation and accumulating trend of heavy metal concentrations in a soil-rice system caused by intensive human activities in Wenling County.

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“…For example, regional studies in Kansas and Wisconsin [50,51] that compared various crops and much more intensively managed grasslands have reported shifts in microbial community composition that may occur with cultivation. In a Michigan study, da C. Jesus et al [22] reported that soil attributes (principally pH, organic matter, and nutrients) had greater effects on the diversity of bacterial rhizosphere communities than plant genus when analyzing samples from soybean, canola, sunflower, corn, and switchgrass.…”

Section: Ecological Implicationsmentioning

confidence: 99%

Chemistry and Microbial Functional Diversity Differences in Biofuel Crop and Grassland Soils in Multiple Geographies

et al. 2012

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Soil microbial communities under model biofuel cropping systems in southern Wisconsin, USA: Impact of crop species and soil properties

Cited by 82 publications

References 42 publications

Soil denitrifier community size changes with land use change to perennial bioenergy cropping systems

Soil denitrifier community size changes with land use change to perennial bioenergy cropping systems

Spatio-temporal Variability of Heavy Metal Concentrations in Soil-rice System and Its Socio-environmental Analysis

Chemistry and Microbial Functional Diversity Differences in Biofuel Crop and Grassland Soils in Multiple Geographies

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