UBC scientist Suzanne Simard researches how the oldest trees in forests nurture, communicate with and protect younger seedlings. This body of work proposes a specific approach to studying resilience and applied it to Interior Cedar-Hemlock (ICH), Sub-Boreal Spruce (SBS) and Engelmann Spruce-Subalpine Fir (ESSF) forests extending across central British Columbia, Canada. Individual species sensitive to the forestry treatment (recorded exclusively pre-burn) included Rhododendron albiflorum, Menziesia ferruginea and Prosartes hookeri in the ICH; Rubus pedatus in the SBS; and Orthilia secunda, Listera cordata and Moneses uniflora in the ESSF. There, neither protection in small gaps nor access to mycorrhizal networks were sufficient to create favourable regeneration conditions. Chapter 4 was designed to test the influence of site series on growth predictions using SORTIE-ND. Vancouver, BC V6T 1Z4 While the mechanism of kin recognition is still not well understood, we provided evidence of kin recognition in interior Douglas-fir seedlings, particularly those that originate from harsh climates, and observed subtle indicators of kin selection or reduction of competition due to a close genetic relationship. Suzanne W. Simard's 12 research works with 34 citations and 1,863 reads, including: Diverging distribution of seedlings and mature trees reflects recent climate change in British Columbia Articles Cited by. Listen to episode ten below, and make sure to subscribe wherever you get your podcasts. Our study clarifies ectomycorrhizal taxonomic and functional responses to environmental factors but warrants further research to broaden root trait frameworks and evaluate the role of mycorrhizal fungi in mediating ecosystem responses to environmental changes. My primary hypothesis is that light and soil N availability have species-specific effects on photosynthetic activity and growth, and that together these resources will better define understory development in complex forests. Refereed Journal Articles, Published Simard, S.W., Asay, A.K., Beiler, K.J., Bingham, M.A., Deslippe, J.R., He, X., Philip, L.J., Song, Y., Teste, F.P. Instructor: Dr. Suzanne, Simard (suzanne.simard@ubc.ca) Meeting Time / Place: Monday, 15:00-17:00, FSC 1611 ... Three seminars will be given by Suzanne Simard. At UBC, she has a vibrant research program, a teaching program focused on forest ecology and complexity science, and she is a strong contributor to the forestry profession in Canada. The occurrence of R. vesiculosus shifted in the presence of R. vinicolor towards deeper soil horizons, suggesting competition and foraging strategy are important for niche partitioning between these species. glauca) forests, particularly as climate changes. The B horizon of stumped plots was significantly enriched with potential plant growth-promoting bacteria (PGPR), such as rhizobia. Positive expression of both genes across donors and receivers and pervasive presence of spider mites suggested signal transfer may either have not occurred or been masked by already ongoing defensive responses. Interior Douglas-fir, an economically and culturally valuable conifer species, has recently had inconsistent regeneration success in the dry climatic regions of its distribution due to high summer soil surface temperatures, drought and growing season frost. Both a greenhouse and field experiments were performed to corroborate results. Vancouver Campus. In late 2015 NSERC announced that this SPG, led by Suzanne Simard, was selected for funding in the themes of ‘Natural Resources’ and ‘Optimizing Resource Extraction, Harvesting and Renewal’. This together with size asymmetries among different genets and trees resulted in the self-organization of complex, hierarchical scale-free MN architectures. Year; Net transfer of carbon between ectomycorrhizal tree species in the field. glauca seedlings in the field Journal of Ecology, 98: 429-439 Simard… Suzanne Simard est canadienne et professeure en aménagement forestier à l’Université de la Colombie-Britannique (UBC). No alternative ectomycorrhizal host species were detected. Les résultats de ces expériences ont eu un fort impact après leur publication. In partial-cut forests, understory Tsuga heterophylla and Picea glauca x sitchensis had consistent foliar N% across gradients of light availability; in contrast, foliar N% of Betula papyrifera and Thuja plicata declined with increasing shade, which would distort assessments of soil fertility and perhaps contribute to increased mortality of these species in deep shade. These fungi help trees acquire nutrients and water from the soil in exchange for carbon. Here, I found that juvenile radial growth was faster under the canopy of mature trees than in the neighborhood of similar sized juveniles at the two lowest density classes, 7 and 20 m²/ha. This last result may be due in part to the comparatively weak status of the planted paper birch, which never overcame early poor performance. Sort. Vancouver, BC Canada V6T 1Z4. Decreasing the soil inoculum potential, while decreasing overall performance, increased the kin response. For individual research publications, see faculty profiles or use the search field above. Elle a notamment utilisé le carbone radioactif pour mesurer le flux et le partage du carbone entre les arbres et les espèces. Fungal α-diversity in the A horizon increased with stumping regardless of tree species composition and had a tendency to increase in the FH and B horizons. Cited by. Research Highlights. I haven't rated … In the FH horizon, the relative abundance of the saprotrophic fungal community declined while that of ectomycorrhizal (ECM) fungal community increased with stumping. A professor of forest ecology at the University of British Columbia's Department of Forest and Conservation Sciences in Vancouver, Suzanne Simard studies the surprising and delicate complexity in nature. When drought conditions were greatest, growth of these same seedlings increased when they could form an EM network with nearby trees in the absence of root competition, but it was reduced when they were unable to form a network.