Lawrence Ruben effortlessly drills through six inches of ice on the Hornaday River near Paulatuk, N.W.T. utilizing an electric auger, completing the task in just four seconds. As water and ice particles emerge from the hole, he jokingly refers to the auger as “the best contraption since sliced bread” before moving on to drill another hole. Located about 25 minutes away from Paulatuk, the Hornaday River is a cherished spot where Ruben and his wife, Dianne, have a cabin for relaxation and Arctic char fishing.
Despite their efforts, the char population in the area has shown erratic behavior, deviating from their usual patterns of overwintering in the Hornaday and Brock rivers before heading back to Darnley Bay and the Arctic Ocean. To investigate these changes, the community has partnered with Fisheries and Oceans Canada on a research project involving the tagging of 38 Arctic char with acoustic monitors.
This initiative, which includes implanting acoustic transmitter tags in the fish and setting up receivers in the Arctic Ocean, aims to track the movement patterns of the char. By collecting data on their whereabouts and activities, researchers hope to gain insights into their behavior and migration triggers. The project also intends to study the impact of environmental changes, such as thawing permafrost and warming temperatures, on the char population’s habits.
The tagging process, overseen by scientists like Tazi Rodrigues and Paul Blanchfield, involves inserting small acoustic tags into the fish for monitoring purposes. These tags emit signals that are picked up by underwater receivers, providing critical information about the char’s movements. With a lifespan of four years, the tags are expected to offer valuable data on the fish’s activities, migration routes, and habitat preferences.
As the research progresses, the community remains invested in preserving the Arctic char as a vital subsistence resource. Ruben reflects on the significance of these fish for the community of Paulatuk, emphasizing their cultural and nutritional importance. Despite challenges posed by climate change and shifting habitats, efforts to understand and protect the Arctic char population continue, underscoring the value placed on this iconic species.