Robert Bradley

Professeur titulaire

Centre SÈVE
Centre de recherche CEF

Coordonnées

Courriel : Robert.Bradley@USherbrooke.ca
Téléphone : 819 821-8000, poste 62080
Télécopieur : 819 821-8049
Local : D5-205

Formation

Ph. D. Pédologie forestière, McGill (1996)

Postdoctorat, UBC (1996-1998)

Thème de recherche

  • Biodiversité des sols
  • Rétroactions sol-plantes
  • Succession végétale
  • Agroforesterie
  • Gaz à effet de serre
  • Cyclage d'azote
  • Biologie et biochimie des sols

Recherches

Les flux d’énergie et le cyclage d’éléments nutritifs sont deux aspects fondamentaux du fonctionnement des écosystèmes terrestres. Le sol représente une "zone chaude" d'activités biologiques où se couple les métabolismes autotrophes et hétérotrophes qui contrôllent ces fonctions de l'écosystème. Dans mon laboratoire, on s’intéresse principalement aux cycles du carbone et de l'azote, àla nutrition minérale et organique des végétaux, à l'activité et la diversité des communautés microbiennes du sol, aux diverses fonctions de la rhizosphère, et aux rôles des mycorhizes et de certains groupes fauniques du sol. Ces divers volets de recherche cadrent dans un plus large contexte qui tentent d'élucider les effets des perturbations et de la succession des écosystèmes naturels, et ceux de la gestion d'écosystèmes anthropisés.  Ce programme de recherche consiste en un travail d'équipe avec les étudiants gradués de l’Université de Sherbrooke, misant sur la collaboration de partenaires québécois et canadiens des secteurs publics et privés.

Publications

Autres publications

Bradley RL, Elhottová D, Parsons W, Chroňáková A, Čuhel J, Hynšt J, Šimek M (Submitted Nov. 2018) Rates of soil degradation and recovery in an overwintering pasture. Plant, Soil and Environment.

Krista Reicis, Robert L. Bradley, Gilles Joanisse, Stephane Tremblay, Martin Barrette, Daniel Houle, Amy Wotherspoon. (Submitted Nov. 2018). Pre-commercial thinning of boreal black spruce stands may reduce long-term site fertility by increasing the competitive ability of ericaceous shrubs: interactions with climate regime and geological deposit. Journal of Applied Ecology.

Matthew L. Meehan, Carlos Barreto, Jordan Kustec, Matthew S. Turnbull, Robert Bradley, Jean-Philippe Bellenger, Zoë Lindo. (Submitted Oct. 2018). Warming disentangles predator and prey communities in belowground systems. Biology Letters.

Chagnon P-L, Bradley RL, Lafond J, Paré M, Penaud V. (Submitted Oct. 2018). Trait-based and phylogenetic filtering of arbuscular mycorrhizal fungal communities under long term agricultural practices. Functional Ecology

Darnajoux R, Bradley RL, Houle D, Bellenger J-P (2018) Predictable spatial patterns of biological nitrogen fixation in forest floor mosses: color matters! Soil Biology and Biochemistry 122: 160-162

Charles Marty, Joanie Piquette, Hubert Morin, Denis Bussières, Nelson Thiffault, Daniel Houle, Robert L. Bradley, Myrna J. Simpson, Maxime C. Paré. (Submitted Sept. 2018).  Nine years of in situ soil warming increases the recalcitrance and temperature sensitivity of soil organic carbon in a boreal forest, a landscape scale study. Geoderma.

Lévesque J-A, Bradley RL, Bellemare M, Lafond J, Paré MC (2018) Predicting weed and lowbush blueberry biomass using the point intercept method. Canadian Journal of Plant Science. 98: 967-970

Scott DL, Bradley RL, Bellenger J-P,  Houle D, Gundale M, Rousk K, DeLuca T (2018) Anthropogenic deposition of heavy metals and phosphorus may reduce biological N2 fixation in boreal forest mosses. Science of the Total Environment 630: 203–210

Girona J, Bradley RL, Lévesque J-A, Paré M, Bellemare M. (2018) A call for improving winter windbreak design for lowbush blueberry production in the Saguenay–Lac-Saint-Jean region of Québec, Canada.  International Journal of Fruit Science, DOI: 10.1080/15538362.2018.1502718

Joanisse GD, Bradley RL, Preston CM. (2018) The spread of Kalmia angustifolia on black spruce forest cutovers contributes to the spatial heterogeneity of soil resources. PLoS ONE 13(6): e0198860 (https://doi.org/10.1371/journal. pone.0198860)

Chagnon PL, Bradley RL, Klironomos JN (Submitted Sept. 2018) Mutualistic network assembly in a community context: the presence of neighbours matters.  Journal of Ecology.

Rousk K., Degboe J., Michelsen A., Bradley R., Bellenger J.P. (2017) Molybdenum and phosphorus limitation of moss-associated nitrogen fixation in boreal ecosystems. New Phytologist 214: 97-107

Fugère M, Bradley RL, Vellend M (2017) Exotic earthworms dispersion through protected forest areas and their potential impacts on nitrous oxide production. Biological Invasions, 19: 773-783

Cuéllar MA, Allaire SE, Lange SF, Bradley RL, Parsons WFJ, Rivest D, Cogliastro A (2017) Greenhouse gas dynamics in a tree-based intercropping system. Canadian Journal of Soil Science. 97: 382–393

Gauthier M, Bradley RL, Lange S, Allaire S, Parsons WFJ, Cuéllar M (2017) Evidence that tree-based intercropping and nitrogen fertilizer management affect soil methane fluxes. Canadian Journal of Soil Science. 97: 410-415

Grant R, Kinch T, Bradley RL, Whalen J, Cogliastro A, Allaire S (2017) Carbon sequestration and ecosystem productivity in tree-based intercropping systems as affected by tree management. Canadian Journal of Soil Science. 97: 416-432

Jean P-O, Bradley RL, Berthiaume R, Tremblay J-P (2016) Evaluating old and novel proxies for in vitro digestion assays in wild ruminants. Wildlife Society Bulletin 40: 359-367.

Winans KS, Rivest D, Cogliastro A, Whalen JK, Bradley RL (2016) Carbon sequestration and carbon markets for tree-based intercropping systems in southern Quebec, Canada.  Atmosphere 7, 17 doi:10.3390.

Drouin M., Bradley RL, Lapointe L (2016) Linkage between exotic earthworms, understory vegetation and soil properties in sugar maple forests. Forest Ecology and Management 364: 113-121.

Ndanga É, Lopera C, Bradley RL, Cabral A (2016) Effects of preconditioning the rhizosphere of different plant species on biotic methane oxidation kinetics". Waste Management 55: 313–320.

Kernecker M, Whalen JK, Bradley RL (2015) Agricultural management and flooding shape habitats for non-native earthworms in southern Québec, Canada. Applied Soil Ecology 96: 240-250.

Jean P-O, Bradley RL, Tremblay J-P (2015). Testing for bottom-up effects in an overbrowsed boreal landscape. Wildlife Biology 21: 318-322.

Ndanga É, Bradley RL, Cabral AR (2015). Does vegetation affect the methane oxidation efficiency of passive biosystems? Waste Management 38: 240-249.

Jean P-O, Bradley RL, Tremblay J-P, Côté S (2015) Combining near infrared spectra of fecal samples and geostatistical tools to generate forage nutritional quality maps across heterogeneous landscapes. Ecological Applications 25: 1630-1639.

Kernecker M, Whalen JK, Bradley RL (2015)  Endogeic earthworms lower net methane production in saturated riparian soils. Biology and Fertility of Soils 51: 271-275.

Chagnon P-L, Bradley RL, Klironomos JN. (2015). Trait-based partner selection drives mycorrhizal network assembly. Oikos 124: 1609-1616.

Chagnon P-L, Bradley RL. (2015). The relative importance of host vigor and hormonal response to pathogens in controlling the development of arbuscular mycorrhizal fungi. Soil Biology & Biochemistry 83: 40-42.

Gauthier M, Bradley RL, Šimek M (2015) More evidence that anaerobic oxidation of methane is prevalent in soils: Is it time to upgrade our models? Soil Biology & Biochemistry 80: 167-174.