Maximum Annual Potential Yields of Salix miyabeana SX67 in Southern Quebec and Effects of Coppicing and Stool Age

Fontana, Mario; Lafleur, Benoît; Labrecque, Michel; Courchesne, François; Bélanger, Nicolas

doi:10.1007/s12155-016-9752-0

Cited by 12 publications

(6 citation statements)

References 51 publications

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“…However, coppicing reduced root biomass, as it reduced phytostabilization without altering TE bioconcentration levels ( Figure 1 ). Longer-term studies would be needed to better appreciate the impact of root tissue rejuvenation through coppicing, as it may increase root mortality and turnover rate, as well as root:shoot ratio [ 31 , 34 , 35 ]. This could in turn have an impact on phytoremediation services by altering soil properties and, concurrently, TE mobility and bioavailability.…”

Section: Discussionmentioning

confidence: 99%

Willow Aboveground and Belowground Traits Can Predict Phytoremediation Services

Gervais-Bergeron

Chagnon

Labrecque

2021

Plants

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The increasing number of contaminated sites worldwide calls for sustainable remediation, such as phytoremediation, in which plants are used to decontaminate soils. We hypothesized that better anchoring phytoremediation in plant ecophysiology has the potential to drastically improve its predictability. In this study, we explored how the community composition, diversity and coppicing of willow plantations, influenced phytoremediation services in a four-year field trial. We also evaluated how community-level plant functional traits might be used as predictors of phytoremediation services, which would be a promising avenue for plant selection in phytoremediation. We found no consistent impact of neither willow diversity nor coppicing on phytoremediation services directly. These services were rather explained by willow traits related to resource economics and management strategy along the plant “fast–slow” continuum. We also found greater belowground investments to promote plant bioconcentration and soil decontamination. These traits–services correlations were consistent for several trace elements investigated, suggesting high generalizability among contaminants. Overall, our study provides evidence, even using a short taxonomic (and thus functional) plant gradient, that traits can be used as predictors for phytoremediation efficiency for a broad variety of contaminants. This suggests that a trait-based approach has great potential to develop predictive plant selection strategies in phytoremediation trials, through a better rooting of applied sciences in fundamental plant ecophysiology.

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Section: Discussionmentioning

confidence: 99%

Willow Aboveground and Belowground Traits Can Predict Phytoremediation Services

Gervais-Bergeron

Chagnon

Labrecque

2021

Plants

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“…The highest estimated willow potential yields from PRISM‐ELM were in the 18–22 Mg ha −1 yr −1 range. Measurements of willow yields in trials of unimproved cultivars in central New York have reached 27 Mg ha −1 yr −1 with irrigation and fertilization (Adegbidi et al ., ), exceeded 24 Mg ha −1 yr −1 on fertilized sites in Quebec (Nissim et al ., ), and maximum yield potential in Quebec has been predicted to be above 28 Mg ha −1 yr −1 (Fontana et al ., ). Yields of the top three willow cultivars over two cutting cycles ranged from 10.3 to 14.2 Mg ha −1 yr −1 .…”

Section: Discussionmentioning

confidence: 99%

Poplar and shrub willow energy crops in the United States: field trial results from the multiyear regional feedstock partnership and yield potential maps based on the PRISM‐ELM model

et al. 2018

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To increase the understanding of poplar and willow perennial woody crops and facilitate their deployment for the production of biofuels, bioproducts, and bioenergy, there is a need for broadscale yield maps. For national analysis of woody and herbaceous crops production potential, biomass feedstock yield maps should be developed using a common framework. This study developed willow and poplar potential yield maps by combining data from a network of willow and poplar field trials and the modeling power of PRISM-ELM. Yields of the top three willow cultivars across 17 sites ranged from 3.60 to 14.6 Mg ha À1 yr À1 dry weight, while the yields from 17 poplar trials ranged from 7.5 to 15.2 Mg ha À1 yr À1. Relationships between the environmental suitability estimates from the PRISM-ELM model and results from field trials had an R 2 of 0.60 for poplar and 0.81 for willow. The resulting potential yield maps reflected the range of poplar and willow yields that have been reported in the literature. Poplar covered a larger geographic range than willow, which likely reflects the poplar breeding efforts that have occurred for many more decades using genotypes from a broader range of environments than willow. While the field trial data sets used to develop these models represent the most complete information at the time, there is a need to expand and improve the model by monitoring trials over multiple cutting cycles and across a broader range of environmental gradients. Despite some limitations, the results of these models represent a dramatic improvement in projections of potential yield of poplar and willow crops across the United States.

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“…However, the stools produce new stems when they are cut back. They produce 6 stems on average (Tharakan et al, 2005), ranging from 2 to 12 (Fontana et al, 2016). Tharakan et al (2016) reported a mean leaf area index of 4.9 for this cultivar at the end of a three-year rotation cycle.…”

Section: Plant Materialsmentioning

confidence: 97%