Publications

For open access to non-copy-edited versions of recent manuscripts, please see the University of Saskatchewan HARVEST repository by following links to "College of Agriculture and Bioresources" followed by "Soil Science".

(https://harvest.usask.ca/collections/cc7e134b-137e-43b1-b18c-cbb379b39e33)

Chizen, C.J., B.L. Helgason, B. Weiseth, G.S.Dhillon, H.M. Bulch, J.J. Schoenau and A.K. Bedard-Haughn. 2024. Soil carbon dynamics in drained prairie pothole wetlands. Front. Environ. Sci.  doi.org/10.3389/fenvs.2024.1353802.

Reimer, J.C., M.M. Arcand and B.L. Helgason. 2023. Soil denitrification response to increased urea concentration constrains nitrous oxide emissions in a simulated cattle urine patch. Plant Soil. doi.org/10.1007/s11104-023-06048-w.

Town, J.R., T. Dumonceaux, B. Tidemann and B.L. Helgason. Crop rotation significantly influences the composition of soil, rhizosphere and root microbiota in canola (Brassica napus L.). Environ. Microbiol. 18:1-14. doi.org/10.1186/s40793-023-00495-9.

Town, J. R., R.L. Lemke, M. Yu and B.L. Helgason. 2023. Land use in the Prairie Pothole Region influences the soil bacterial community composition and relative abundance of nitrogen cycling genes. Can. J. Soil Sci. doi.org/10.1139/CJSS-2022-0121.

Li, Yunliang, N. Bazghaleh, S. Vail, S.D. Mamet, S.D. Siciliano and B.L. Helgason. 2023. Root and rhizosphere fungi associated with the yield of diverse Brassica napus genotypes. Rhizosphere.  doi:10.1016/j.rhisph.2023.100677.

Li, Yunliang, Vail, S.L., Arcand, M.M. and B.L. Helgason. 2023. Contrasting nitrogen fertilization and Brassica napus (canola) variety development impact recruitment of the root-associated microbiome. Phytobiomes J. doi:10.1094/PBIOMES-07-0045-R.

Bell, J., S.D. Mamet, B.L. Helgason and S.D. Siciliano. 2022. Brassica napus bacterial assembly processes vary with plant compartment and growth stage but not between lines. Appl. Env. Microbiol. doi: 10.1128/aem.00273-22.

Taye, Z.M., K. Noble, S.D. Siciliano, B.L. Helgason, and E.G. Lamb. 2022. Root Growth Dynamics, Dominant Rhizosphere Bacteria, and Correlation Between Dominant Bacterial Genera and Root Traits Through Brassica napus Development. Plant Soil. doi.org/10.1007/s11104-022-05296-6

Morales Moreira, Z., B.L. Helgason and J.J. Germida. 2022. Assembly and potential transmission of the Lens Culinaris seed microbiome. FEMS Microbiol Ecol. 97: fiab166. doi.org/10.1093/femsec/fiab166.

Mamet, S.D., B.L. Helgason, E.G. Lamb, A. McGillivray, K.G. Stanley, S.J. Robinson, S.U. Aziz, S. Vail, S.D. Siciliano. 2022. Phenology-dependent root bacteria traits enhance yield of Brassica napus. Soil Biology and Biochemistry. Soil Biol. Biochem. 166:108468. doi.org/10.1016/j.soilbio.2021.108468.

Town, J.R., E.G. Gregorich, C.F. Drury, R. Lemke, L.A. Phillips and B.L. Helgason. 2022. Diverse crop rotations influence the bacterial and fungal communities in root, rhizosphere and soil and impact soil microbial processes. Appl. Soil Ecol. 169:104241. doi.org/10.1016/j.apsoil.2021.104241

Bell, J., B.L. Helgason and S.D. Siciliano. 2021. Brassica napus phyllosphere bacterial composition changes with growth stage. Plant Soil. 464:501-516. doi:10.1007/s11104-021-04965-2.

Overy, D.P., M.H. Bell, J. Habtewold, B.L. Helgason and E.G. Gregorich. 2021. ‘Omics’ technologies for the study of soil carbon stabilization: a review. Front. Environ. Sci. 9:617952. doi.org/10.3389/fenvs.2021.617952.

Habtewold, J., B.L. Helgason, S.F. Yanni, H.H. Janzen, B.H. Ellert and E.G. Gregorich. 2021 Warming Effects on the Structure of Bacterial and Fungal Communities in Diverse Soils. Appl. Soil Ecol. 163:103973. doi.org/10.1016/j.apsoil.2021.103973.

Shahariar, S., B.L. Helgason, R. Soolanayakanahally and A. Bedard-Haughn. 2021. Soil enzyme activity as affected by land-use, salinity, and groundwater fluctuations in wetland soils of the prairie pothole region. Wetlands. 41:1-16. doi.org/10.1007/s13157-021-01431-8.

Morales Moreira, Z., B.L. Helgason and J.J. Germida. 2021. Environment has a stronger effect than host plant genotype in shaping spring Brassica napus seed microbiome. Phytobiomes J. 5:220-230. doi.org/10.1007/s13157-021-01431-8. Awarded the 2020 Best Student Paper in Phytobiomes.

Morales Moreira, Z., B.L. Helgason and J.J. Germida. 2021. Crop, genotype and field environmental conditions shape bacterial and fungal seed epiphytic microbiomes. Can. J. Microbiol. 67:161-173.

Habtewold, J., B.L. Helgason, S. Yanni, H. Janzen, B. Ellert, E. Gregorich. 2020. Litter composition has stronger influence on the structure of soil fungal than bacterial communities. Eur. J. Soil Biol. 98:103190. doi.org/10.1016/j.ejsobi.2020.103190.

Bazghaleh, N., J.K. Bell, S.D. Mamet, Z. Morales Moreira, Z.M. Taye, S. Williams, C. Norris, T. Dowry, M. Arcand, E. Lamb, M. Links, S. Shirtliffe, S. Vail, S.D. Siciliano, B. Helgason. 2020. An intensive multilocation temporal dataset of fungal and bacterial communities in the root and rhizosphere of Brassica napus. Data Brief. 31:106143. doi.org/10.1016/j.dib.2020.106143.

Haddix, M., E. Gregorich, B. Helgason, H. Janzen, B. Ellert, F. Cotrufo. 2020. Climate, carbon content, and soil texture control the independent formation and persistence of particulate and mineral-associated organic matter in soil. Geoderma. doi.org/10.1016/j.geoderma.2019.114160

Taye, Z.M., B. Helgason, J.K. Bell, C.E. Norris, S. Vail, S. Robinson, I. Parkin, M. Arcand, S. Mamet, M. Links, T. Dowhy, S. Siciliano, and E. Lamb. 2019. Core and Differentially Abundant Bacterial Taxa in the Rhizosphere of Field Grown Brassica napus Genotypes: Implications for Canola Breeding. Front. Microbiol. doi.org/10.3389/fmicb.2019.03007

Yanni, S., B.L. Helgason, H.H. Janzen, B.H. Ellert and E.G. Gregorich. 2020. Warming effects on Carbon Dynamics and Microbial Communities in Soils of Diverse Texture. Soil Biol. Biochem. 140:107631. doi.org/10.1016/j.soilbio.2019.107631.

Mamet, S., E. Redlick, M. Brabant, E. Lamb, B. Helgason, K. Stanley and S. Siciliano. 2019. Structural equation modelling of a winnowed soil microbiome identifies how invasive plants re-structure microbial networks. ISME J. 13:1988-1996. doi.org/10.1038/s41396-019-0407-y

Katulanda, P.M., F.L. Walley, H.H. Janzen and B.L. Helgason. 2018. Land use legacy regulates microbial community composition in transplanted Chernozems. Appl. Soil Ecol. 129:13-23. doi.org/10.1016/j.apsoil.2018.03.001.

Yanni, S., A. Diochon, B. Helgason, B. Ellert, and E. Gregorich. 2018. Temperature response of residue and soil organic matter decomposition in soils from different depths. Eur. J. Soil Sci. 69:325-335. doi: 10.1111/ejss.12508.

Arcand, M.M., D. J. Levy-Booth and B.L. Helgason. 2017. Resource legacies of organic and conventional management differentiate soil microbial thermodynamics and carbon use. Front. Microbiol. doi:10.3389/fmicb.2017.02293

Wang, X., S. Siciliano, B. Helgason and A. Bedard-Haughn. 2017. Responses of a mountain peatland to increasing temperature: A microcosm study of GHG emission and microbial community dynamics. Soil Biol. Biochem. 110:22-33. doi.org/10.1016/j.soilbio.2017.02.013.

Blain, N.P., B.L. Helgason and J.J. Germida. 2017. Endophytic root bacteria associated with the natural vegetation growing at the hydrocarbon contaminated Bitumount Provincial Historic site. Can. J. Microbiol. 63:502-515. doi.org/10.1139/cjm-2017-0039.

Gregorich, E., H. Janzen, B. Ellert, B. Helgason, B. Qian, B. Zebarth, D. Angers, R. Beyaert, C. Drury, S. Duguid, W. May, B. McConkey and M. Dyck. 2017. Litter decay controlled by temperature, not soil properties, affecting future soil carbon. Glob. Change Biol. 23:1725-1734.

Wang, X., B. Helgason, C. Westbrook and A. Bedard-Haughn. 2016. Effect of mineral sediments at depth on carbon mineralization, organic matter composition and microbial community dynamics in a mountain peatland. Soil Biol. Biochem. 103:16-27. doi.org/10.1016/j.soilbio.2016.07.025.

Arcand, M.M., R.L. Lemke and B.L. Helgason. 2016. Microbial crop residue decomposition dynamics in organic and conventionally managed soils. Appl. Soil Ecol. 107:347-359. doi.org/10.1016/j.apsoil.2016.07.001.

Banerjee, S., B.L. Helgason, L. Wang, T. Winsley, B. Ferrari and S.D. Siciliano. 2016. Legacy effects of soil moisture on microbial community structure and N2O emissions. Soil Biol. Biochem. 95:40-50. doi.org/10.1016/j.soilbio.2015.12.004.

VandenBygaart, A.J., E.G. Gregorich and B.L. Helgason. 2015. Cropland C erosion and burial: Is buried soil organic matter biodegradable? Geoderma 239-240:240-249. doi.org/10.1016/j.geoderma.2014.10.011.

Gregorich, E., H.H. Janzen, B. Helgason and B. Ellert. 2015. Nitrogenous Gas Emissions from Soils and Greenhouse Gas Effects. Advances in Agronomy, pp. 39–74.

Helgason, B.L., H.J. Konschuh, A. Bedard-Haughn and A.J. VandenBygaart. 2014. Microbial distribution in an eroded landscape: Buried A horizons support abundant and unique communities. Agric. Ecosys. Environ. 196:94-102. doi.org/10.1016/j.agee.2014.06.029.

Yannikos, N., P. Leinweber, B.L. Helgason, C. Baum, F.L. Walley and K.C.J. Van Rees. 2014. Impact of Populus trees on the composition of soil organic matter and the soil microbial community in Orthic Grey Luvisols in Saskatchewan (Canada). Soil Biol. Biochem. 70:5-11. doi.org/10.1016/j.soilbio.2013.11.025.

Helgason, B.L., E.G. Gregorich, B.H. Ellert, H.H. Janzen and R.P. Dick. 2014. Long-term microbial retention of residue C is site-specific and depends on residue placement. Soil Biol. Biochem. 68:231-240. doi.org/10.1016/j.soilbio.2013.10.002.

Helgason, B.L., F.L. Walley and J.J. Germida. 2010. Long-term no-till management affects microbial biomass but not community composition in Prairie agroecosystems. Soil Biol. Biochem. 42:2192-2202. doi:10.1016/j.soilbio.2010.08.015.

Helgason, B.L., F.L. Walley and J.J. Germida. 2010b. Microbial biomass and community profiles of soil aggregates from no-till and conventionally tilled soils. Appl. Soil Ecol. 46:390-397. doi:10.1016/j.apsoil.2010.10.002.

Helgason, B.L., F.L. Walley and J.J. Germida. 2009. Fungal and Bacterial Abundance in Long-Term No-till and Intensive-till Soils of the Northern Great Plains. Soil Sci. Soc. Am. J. 73:120-127. doi:10.2136/sssaj2007.0392.

Helgason, B.L., F.J. Larney, H.H. Janzen and B.M. Olson. 2007. Nitrogen dynamics in soil amended with composted cattle manure. Can. J. Soil Sci. 87:43-50.

Janzen, H.H., D.A. Angers, M. Boehm, M. Bolinder, R.L. Desjardins, J. Dyer, B.H. Ellert, D.J. Gibb, E.G. Gregorich, B.L. Helgason, R. Lemke, D. Massé, S.M. McGinn, T.A. McAllister, N. Newlands, E. Pattey, P. Rochette, W. Smith, A.J. VandenBygaart, and H. Wang. 2006. A proposed approach to estimate and reduce net greenhouse gas emissions from whole farms. Can. J. Soil Sci. 86:401-418.

Zvomuya, F., B.L. Helgason, F.J. Larney, H.H. Janzen, O.O. Akinremi and B.M. Olson. 2006. Predicting phosphorus availability from soil-applied composted and non-composted cattle feedlot manure. J. Environ. Qual. 35:928-937.

Helgason, B.L., F.J. Larney and H.H. Janzen. 2005. Estimating carbon retention in soils amended with composted beef cattle manure. Can. J. Soil Sci. 85:39-46.

Helgason, B.L., H.H. Janzen, M.H. Chantigny, C. F. Drury, B.H. Ellert, E.G Gregorich, R.L. Lemke, E. Pattey, P. Rochette, and C. Wagner-Riddle. 2005. Toward improved coefficients for predicting direct N2O emissions from soil in Canadian agroecosystems. Nutr. Cycling Agroecosyst. 72:87-99.