Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

StandardStandard

Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation. / George, Paul B. L.; Fidler, David B.; Van Nostrand, Joy D. et al.
Yn: Frontiers in Microbiology, Cyfrol 12, 735022, 14.09.2021.

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

HarvardHarvard

George, PBL, Fidler, DB, Van Nostrand, JD, Atkinson, JA, Mooney, SJ, Creer, S, Griffiths, RI, McDonald, JE, Robinson, DA & Jones, DL 2021, 'Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation', Frontiers in Microbiology, cyfrol. 12, 735022. https://doi.org/10.3389/fmicb.2021.735022

APA

George, P. B. L., Fidler, D. B., Van Nostrand, J. D., Atkinson, J. A., Mooney, S. J., Creer, S., Griffiths, R. I., McDonald, J. E., Robinson, D. A., & Jones, D. L. (2021). Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation. Frontiers in Microbiology, 12, Erthygl 735022. https://doi.org/10.3389/fmicb.2021.735022

CBE

George PBL, Fidler DB, Van Nostrand JD, Atkinson JA, Mooney SJ, Creer S, Griffiths RI, McDonald JE, Robinson DA, Jones DL. 2021. Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation. Frontiers in Microbiology. 12:Article 735022. https://doi.org/10.3389/fmicb.2021.735022

MLA

VancouverVancouver

George PBL, Fidler DB, Van Nostrand JD, Atkinson JA, Mooney SJ, Creer S et al. Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation. Frontiers in Microbiology. 2021 Medi 14;12:735022. doi: 10.3389/fmicb.2021.735022

Author

George, Paul B. L. ; Fidler, David B. ; Van Nostrand, Joy D. et al. / Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation. Yn: Frontiers in Microbiology. 2021 ; Cyfrol 12.

RIS

TY - JOUR

T1 - Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation

AU - George, Paul B. L.

AU - Fidler, David B.

AU - Van Nostrand, Joy D.

AU - Atkinson, Jonathan A.

AU - Mooney, Sacha J.

AU - Creer, Simon

AU - Griffiths, Robert, I

AU - McDonald, James E.

AU - Robinson, David A.

AU - Jones, Davey L.

PY - 2021/9/14

Y1 - 2021/9/14

N2 - Soil organic matter is composed of a variety of carbon (C) forms. However, not all forms are equally accessible to soil microorganisms. Deprivation of C inputs will cause changes in the physical and microbial community structures of soils; yet the trajectories of such changes are not clear. We assessed microbial communities using phospholipid fatty acid profiling, metabarcoding, CO 2 emissions, and functional gene microarrays in a decade-long C deprivation field experiment. We also assessed changes in a range of soil physicochemical properties, including using X-ray Computed Tomography imaging to assess differences in soil structure. Two sets of soils were deprived of C inputs by removing plant inputs for 10 years and 1 year, respectively. We found a reduction in diversity measures, after 10 years of C deprivation, which was unexpected based on previous research. Fungi appeared to be most impacted, likely due to competition for scarce resources after exhausting the available plant material. This suggestion was supported by evidence of bioindicator taxa in non-vegetated soils that may directly compete with or consume fungi. There was also a reduction in copies of most functional genes after 10 years of C deprivation, though gene copies increased for phytase and some genes involved in decomposing recalcitrant C and methanogenesis. Additionally, soils under C deprivation displayed expected reductions in pH, organic C, nitrogen, and biomass as well as reduced mean pore size, especially in larger pores. However, pore connectivity increased after 10 years of C deprivation contrary to expectations. Our results highlight concurrent collapse of soil structure and biodiversity following long-term C deprivation. Overall, this study shows the negative trajectory of continuous C deprivation and loss of organic matter on a wide range of soil quality indicators and microorganisms.

AB - Soil organic matter is composed of a variety of carbon (C) forms. However, not all forms are equally accessible to soil microorganisms. Deprivation of C inputs will cause changes in the physical and microbial community structures of soils; yet the trajectories of such changes are not clear. We assessed microbial communities using phospholipid fatty acid profiling, metabarcoding, CO 2 emissions, and functional gene microarrays in a decade-long C deprivation field experiment. We also assessed changes in a range of soil physicochemical properties, including using X-ray Computed Tomography imaging to assess differences in soil structure. Two sets of soils were deprived of C inputs by removing plant inputs for 10 years and 1 year, respectively. We found a reduction in diversity measures, after 10 years of C deprivation, which was unexpected based on previous research. Fungi appeared to be most impacted, likely due to competition for scarce resources after exhausting the available plant material. This suggestion was supported by evidence of bioindicator taxa in non-vegetated soils that may directly compete with or consume fungi. There was also a reduction in copies of most functional genes after 10 years of C deprivation, though gene copies increased for phytase and some genes involved in decomposing recalcitrant C and methanogenesis. Additionally, soils under C deprivation displayed expected reductions in pH, organic C, nitrogen, and biomass as well as reduced mean pore size, especially in larger pores. However, pore connectivity increased after 10 years of C deprivation contrary to expectations. Our results highlight concurrent collapse of soil structure and biodiversity following long-term C deprivation. Overall, this study shows the negative trajectory of continuous C deprivation and loss of organic matter on a wide range of soil quality indicators and microorganisms.

KW - agricultural grassland

KW - anaerobic respiration

KW - bare fallow

KW - carbon residence time

KW - soil microbial community

U2 - 10.3389/fmicb.2021.735022

DO - 10.3389/fmicb.2021.735022

M3 - Article

C2 - 34594317

VL - 12

JO - Frontiers in Microbiology

JF - Frontiers in Microbiology

SN - 1664-302X

M1 - 735022

ER -