From the article by Ivan Semeniuk published by The Globe and Mail on October 10, 2017:

Now, Mr. Andrew’s observations and recollections have become part of a comprehensive new report that marshals traditional knowledge from communities across the sprawling Mackenzie Basin. In the aggregate, those accounts offer a striking and consistent portrait of a riverine world in the throes of a sweeping transformation – a view that, until now, has been difficult for researchers to capture at the human scale.

“It’s not just ecological impact, but social, cultural and economic issues we’re identifying that a scientist wouldn’t necessarily see,” said Brenda Parlee, an associate professor in environmental sociology at the University of Alberta in Edmonton and co-editor of the report, entitled Tracking Change, which is set for release on Tuesday.

Dr. Parlee said the aim of the project is to enable communities throughout the Mackenzie basin to document and share their own knowledge about an aquatic ecosystem that they have long depended on for food and transportation. The conservation group WWF Canada, among others, has identified a deficiency in data on the Mackenzie when it come to species and habitats. With information patchy, the collective traditional knowledge acquired and passed down by Indigenous peoples offers an alternative picture of what is happening that is often more complete.