Presentations
27/03
at 14H00 | 518 B

New Technologies in Support of Biodiversity

Moderated by: Hugo Thibaudeau Robitaille, T2 Environnement
Innovation and clean technology
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- An integrative approach to increase the value of brownfields by phytoremediation

Urban brownfields are often overlooked due to the negative perception associated with them: residual contamination, low economic value, presence of undesirable species and lack of aesthetic concerns. However, by promoting an appropriate use of these lands, brownfields have the potential to generate economic and environmental benefits. Since 2016, the Institut de recherche en biologie végétale is conducting research studies, in the Eastern part of the Montreal Island, on biomass production and phytoremediation on urban brownfields to implement their sustainable use. Many fast-growing species, such as willow and hybrid poplars, have shown that sustainable biomass production is possible on these lands. Furthermore, the integration of landscape architecture elements has fostered social acceptability of the project.

- Estimation of chlorophyll-a and blue-green algal blooms concentrations by remote sensing: a case-study

The «Vitrine technologique» program of the City of Québec allows Groupe Hémisphères to demonstrate a case study of its SCHORE remote sensing tool; the protection of drinking water sources in Quebec City. SCHORE allows the estimation of chlorophyll-a (Chl-a) concentration using multispectral satellite images to document algal blooms in freshwater lakes. With the frequent passages of the targeted satellites, it is possible to monitor several times a week the Chl-a concentrations of lakes in the Saint-Charles’s river watershed. Ultimately, SCHORE will be able to monitor water bodies in near real-time to quickly inform people concerned by surface water quality. To improve SCHORE’s performance, in situ surveys were conducted on more than 11 lakes located in the Saint-Charles watershed in 2018. These in situ data were correlated with SCHORE’s Chl-a concentration estimate. Preliminary results of the 2018 season are shown in this presentation.

- Inter-laboratory verification of commercial eDNA assays for frogs and fish with sample handling and interpretation

Reliable detection of target species through environmental DNA (eDNA) is a valuable scientific tool. Based on the premise that animals shed DNA into their environment, eDNA is particularly advantageous for aquatic and semi-aquatic species as shed DNA is transported through the aquatic environment, improving the ability to detect the target species. Reported advantages of eDNA compared with traditional methods include enhanced sensitivity and accuracy, lower sampling effort and cost, expanded window for sample collection and reduced invasiveness to the habitat and organism. Regulatory acceptance of eDNA requires that results are reliable and defensible. This can be achieved through proper field sampling, sample handling and laboratory assay design and validation. This presentation will discuss best practices for eDNA sample collection and preservation, eDNA results interpretation, and reproducibility through a collaborative case study and inter-laboratory comparison.