Ben W Thomas, Ph.D.

Image Ben W. Thomas
Chercheur scientifique – Agroécologie

Mon programme consiste à étudier comment les processus écologiques peuvent être appliqués à la régénération d'agroécosystèmes. Nous traitons chaque ferme, comme une petite planète, pour essayer de la rendre aussi auto-renouvelante que possible et écologiquement efficace.

Agriculture et Agroalimentaire Canada

Recherche et / ou projets en cours

Nous évaluons actuellement le fractionnement du carbone organique du sol dans les divers bassins de matière organique du sol dans des sols modifiés au fumier. C'est une aide pour déterminer le potentiel de séquestration du carbone des sols modifiés au fumier. Nous évaluons également comment la gestion agricole intensive à long terme altère la santé des sols, une réalité à laquelle sont confrontés de nombreux agriculteurs multi-générations du Canada.

Activités professionnelles / intérêts

Rédacteur adjoint de la Revue canadienne de la science du sol

éditeur technique de la Revue canadienne de phytotechnie

Prix et études

Docteur en philosophie (Natural Resource Sciences), Université McGill (2016)

Maîtrise en gestion des ressources et de l'environnement, Université Dalhousie (2012)

Baccalauréat en sciences (biologie),Université de l'Île-du-Prince-Édouard (2009)

Principales publications

24. Zhang, B., B.W. Thomas, R. Beck, W.D. Willms, M. Zhao, X. Hao. 2018b. Slope position regulates carbon and nitrogen stock response to cattle grazing on Rough Fescue grassland. Journal of Soils and Sediments. doi: 10.1007/s11368-018-1992-5 (in press).

23. Beres, B.L., R.J. Graf, R.B. Irvine, J.T. O’Donovan, K.N. Harker, E.N. Johnson, S. Brandt, X. Hao, B.W. Thomas, T.K. Turkington, F.C. Stevenson. 2018. Enhanced N management strategies for winter wheat production in the Canadian Prairies. Canadian Journal of Plant Science doi: 10.1139/CJPS-2017-0319 (in press).

22. Gao, X., B.W. Thomas, R. Beck, D.J. Thompson, M. Zhang, W.D. Willms, X. Hao. 2018. Long-term grazing alters soil trace gas fluxes from grasslands in the foothills of the Rocky Mountains, Canada. Land Degradation & Development 29:292–302.

21. Zhang, B., B.W. Thomas, R. Beck, K. Liu, M. Zhao, X. Hao. 2018a. Labile soil organic matter in response to long-term cattle grazing on sloped rough fescue grassland in the foothills of the Rocky Mountains, Alberta. Geoderma 318:9–15.

20. Zhang, Y., X. Hao, T.W Alexander, B.W. Thomas, X. Shi, N.Z. Lupwayi. 2018. Long-term and legacy effects of manure application on soil microbial communities. Biology and Fertility of Soils 54:269–283.

19. Thomas, B.W., X. Gao, M. Zhang, E.W. Bork, X. Hao. 2018. Grazing altered carbon exchange in a dry mixedgrass prairie as a function of soil texture. Canadian Journal of Soil Science 98:136–147.

18. Thomas, B.W., X. Gao, R. Beck, X. Hao. 2017g. Are distinct nitrous oxide emission factors required for cattle urine and dung deposited on pasture in western Canada? Environmental Science and Pollution Research 24:26142–26147.

17. Thomas, B.W., X. Gao, J.L. Stoeckli, R. Beck, K. Liu, K.M. Koenig, B.L. Beres, X. Hao. 2017f. Nitrapyrin reduced nitrous oxide emissions from beef cattle urine patches on a semiarid tame pasture. Soil Science Society of America Journal 81:1537–1547.

16. Thomas, B.W., X. Hao. 2017. Nitrous oxide emitted from soil receiving anaerobically digested solid cattle manure. Journal of Environmental Quality 46:741–750.

15. Thomas, B.W., X. Li, V. Nelson, X. Hao. 2017e. Anaerobically digested cattle manure supplied more nitrogen with less phosphorus accumulation than undigested manure. Agronomy Journal 109:836–844.

14. Thomas, B.W., F.J. Larney, M.H. Chantigny, C. Goyer, X. Hao. 2017d. Fall rye reduced residual soil nitrate and dryland spring wheat grain yield. Agronomy Journal 109:718–728.

13. Thomas, B.W., X. Hao, W.D. Willms. 2017c. Soil organic carbon, nitrogen and phosphorus thirteen years after abruptly disturbing Northern Great Plains grassland. Canadian Journal of Soil Science 97:329–333.

12. Thomas, B.W., X. Hao, F.J. Larney, C. Goyer, M.H. Chantigny, A. Charles. 2017b. Non-legume cover crops can increase non-growing season nitrous oxide emissions. Soil Science Society of America Journal 81:189–199.

11. Thomas, B.W., Y. Luo, C. Li, X. Hao. 2017a. Utilizing composted beef cattle manure and slaughterhouse waste as nitrogen and phosphorus fertilizers for calcareous soil. Compost Science & Utilization 25:102–111.

10. Zhang, Y., W. de Vries, B.W. Thomas, X. Hao, X. Shi. 2017b. Impacts of long-term nitrogen fertilization on acid buffering rates and mechanisms of a slightly calcareous clay soil. Geoderma 305:92–99.

09. Zhang, Y., H. Shen, X. He, B.W. Thomas, N.Z. Lupwayi, X. Hao, M.C. Thomas, X. Shi. 2017a. Fertilization shapes bacterial community structure by alteration of soil pH. Frontiers in Microbiology doi:10.3389/fmicb.2017.01325.

08. Thomas, B.W., J.K. Whalen, M. Sharifi. 2016b. Short-term nitrogen dynamics in soil amended with poultry litter containing woodchip bedding. Canadian Journal of Soil Science 96:427–434.

07. Thomas, B.W., J.K. Whalen, M. Sharifi, M.H. Chantigny, B.J. Zebarth. 2016a. Labile organic matter fractions as early-season nitrogen supply indicators in manure-amended soils. Journal of Plant Nutrition and Soil Science 179:94–103.

06. Hao, X., B.W. Thomas, V. Nelson, X. Li. 2016. Agronomic values of anaerobically digested cattle manure and the separated solids for barley forage production. Soil Science Society of America Journal 80:1572–1584.

05. Li, P., M. Lang, C. Li, B.W. Thomas, X. Hao. 2016. Nutrient leaching from soil amended with manure and compost from cattle fed diets containing wheat dried distillers' grains with solubles. Water, Air & Soil Pollution 227:1–13.

04. Yang, Z., Y. Li, P. Li, F. Zhang, B.W. Thomas. 2016. Effect of difference between day and night temperature on tomato root activity and low molecular weight organic acid secretion. Soil Science and Plant Nutrition 62:423–431.

03. Thomas, B.W., M. Sharifi, J.K. Whalen, M.H. Chantigny. 2015. Mineralizable nitrogen responds differently to manure type in contrasting soil textures. Soil Science Society of America Journal 79:1396–1405.

02. Gul, S., J.K. Whalen, B.W. Thomas, V. Sachdeva, H. Deng. 2015. Physico-chemical properties and microbial responses in biochar-amended soils: Mechanisms and future directions. Agriculture, Ecosystems & Environment 206:46–59.

01. Whalen, J.K., M.L. Kernecker, B.W. Thomas, V. Sachdeva, C. Ngosong. 2013. Soil food web controls on nitrogen mineralization are influenced by agricultural practices in humid temperate climates. CAB Reviews Perspectives in Agriculture Veterinary Science Nutrition and Natural Resources 8:1–18.

Affiliations

Membre de la Société canadienne de la science du sol

Membre de la Société canadienne d'agronomie

Membre du Soil Science Society of America

Membre du American Society of Agronomy

Membre du Crop Science Society of America

Langue

Anglais