Since mid-July, Fisheries and Oceans Canada reported that approximately one million chum salmon have migrated into the Yukon River from the Bering Sea during the fall season. Despite this surge, experts suggest that the rise in numbers does not necessarily indicate a positive trend for this particular salmon species.
In 2020, there was a significant decline in the chum salmon population, raising concerns among researchers. Sebastian Jones, a wildlife analyst at the Yukon Conservation Society, expressed unease over the unpredictability of these fluctuations, highlighting the limited understanding of these ecosystems.
Canadian-origin salmon account for around 12% of the returning fish, lower than the usual 20-30%. While the numbers are still below desired levels, Jones noted an improvement compared to recent years, with hopes for 100,000 chum salmon crossing into Canada this year.
Stephanie Peacock from the Pacific Salmon Foundation mentioned that chum salmon, along with chinook salmon, play vital roles in the Yukon River ecosystem. Both species have experienced declines, with chum salmon showing a more rapid decrease in recent years.
Researchers are investigating the Bering Sea, where the salmon begin their upstream journey, noting environmental changes like rising water temperatures and increased industrial fishing activity. These factors pose challenges to the ecosystem, requiring further study for a comprehensive understanding.
While there is cautious optimism regarding the current salmon numbers, Peacock emphasized the need for continued vigilance due to the long-term decline in chum salmon populations. The overall concern for the well-being of Yukon chum salmon remains significant despite the recent increase in numbers.
