Remote environmental data acquisition
The Saint-Charles lake is the main fresh water reserve for the city of Quebec. Ensuring the quality of drinking water requires important labor costs and laboratory analyses, occassioning a delay to obtain the results. Preventing the impacts of drinking water contamination requires constant water quality testing, using physico-chemical parameters. It also requires a quick response, especially in case of point source contamination, during periods of water flood or after an accidental spill.
In 2018, WavX will install an autonomous buoy equipped with 4 sensors that will continusly measure 6 physico-chemical parameters of the Lac-Saint-Charles water (T°C, pH, ORP, conductivity, salinity and dissolved oxygen). Our buoy will also retransmit the environmental data in real time via a GPRS communication. This ongoing pilot study is funded by the City of Quebec under the the call for projects "Québec, entrepreneurial city" .
Environment and Climatic Change Canada
Acoustic software development
The presence of Bicknell's Thrush (Catharus bicknelii) is commonly assessed through active listening inventories. These surveys involve the presence of experienced ornithologists in the field at hours that raise safety concerns. By using autonomous recording units, it is now possible to survey bird activity and avoid sending technicians in the field over long time periods. However, listening to audio recordings manually in search of bird vocalizations can be time consuming and requires advanced skills in sound pattern recognition.
The semi-automated call recognition tool for Bicknell's Thrush (Catharus bicknelii) developed by WavX reduces the time of analysis by up to 80%. This greatly facilitates the process of validating this species presence from audio recordings. This open source tool helps identifying patterns of Bicknell's Thrush acoustic activity, and facilitates the fulfillment of the Canadian Wildlife Service’s mandate to identify the critical habitats of this species and ensure its recovery.
- A recording of more than one hour is analyzed within a few seconds
- The filtering and classification processes are scalable and may be adapted to other bird species
Port of Saguenay
Environmental impact study on bats
The Saguenay Port Authority plans to build a marine terminal in the North Shore of the Saguenay river. An environmental impact study is required to document the potential effects of the construction, maintenance, operation, and dismantling phases of the equipment on bats.
environmental impact study on bats, including a search for bat maternity colonies and bat hibernacula, the proposal of mitigation measures, and two nocturnal acoustic inventories: a mobile boat inventory and an fixed inventory using autonomous recording units.
Acoustic inventory of bats
SNC-Lavalin is one of the leading engineering and construction groups in the world. As part of its environmental services, SNC-Lavalin is brought to perform wildlife inventories that may require an expertise in bioacoustics.
WavX has completed several environmental impact studies and authorization certificate on behalf of SNC-Lavalin. These studies carried out by WavX mostly included fixed or mobile acoustic inventories of bats.
Groupe Chiroptères du Québec
Building a web application
With the recent bat conservation concerns associated with the white nose syndrome, the Groupe Chiroptères du Québec (GCQ) wished to create a free and easily accessible tool for Canadian citizens and non-profit organisations, that automatically identify bat species of eastern Canada from their recorded echolocation calls.
Based on an open source detection algorithm, WavX has developed a back-end application using R via Shiny (front-end), including supervised Random Forests for feature classification at the species or genus levels. The Bat Bioacoustics Online application which was supported by several partners has met a great success since it was pushed online on the WavX server.