Huawei and Berlevåg Jeger-og Fiskerforening (BJFF) have successfully deployed an AI-powered filtering system in Norway's Storelva River that allows Atlantic salmon to pass upstream and filters Pacific salmon – an invasive species – into a holding tank.
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Pacific salmon – also known as humpback salmon – were introduced into Russia's White Sea in the 1950s. Quickly making their way down Norway's coast, they began wreaking havoc on the local ecosystem. Alongside introducing new diseases, the invader's rapid reproduction cycle and aggressive competition for food threatens to overwhelm Atlantic salmon in hundreds of rivers along Norway's coastline.
In June 2022 under Huawei's TECH4ALL initiative, Huawei and BJFF deployed the filtering system to prevent Pacific salmon from entering the upstream channel of Norway's river system. A mechanical gate allows local Atlantic salmon and Arctic red-spotted salmon to continue upstream to complete their migratory spawning process. The invasive species is diverted to a holding tank for subsequent removal.
"This is a unique innovation, both in Norway and globally. With this high-tech solution, we have complete control of the river. Local river managers and local and central administrations along the coast have also shown great interest in the project," said BJFF President Geir Kristiansen.
The demand for a solution was urgent, and one shared by the community, government departments, regulators, river owners, and the aquaculture industry – wild Atlantic salmon are an integral part of Norway's identity, culture, and economy. In recent years, however, the number of Pacific salmon caught in Norway's rivers by sports anglers has skyrocketed. In 2019, 13,900 were caught, jumping to a record-breaking 111,700 in 2021 – 57% of all salmon caught in Norway. While almost all were in Troms and Finnmark, Pacific salmon catches have been recorded in every county.
In contrast, numbers of the native wild salmon have declined by a quarter from peak levels. The invasive species is largely responsible, with escaped and less genetically diverse farmed salmon exacerbating the problem by weakening the Atlantic salmon's genome after interbreeding.
"Norway's wild salmon are threatened by other species, including humpback salmon and escaped farmed salmon. The monitoring system using AI is helping to stop this and enable future-proof river management," said BJFF Administrator Tor Schulstad.
The data collected can also reveal accurate patterns of migratory behavior, monitor different types of fish populations, provide information for further research, and help develop measures to stop overfishing.
"Installing a diversion system in a turbulent river is an extremely challenging task. I was impressed with the efforts of our partners, BJFF, and the local community. Here, people aspire to prove the role that good management has in saving rivers from environmental disasters," said Vegard Kjenner, Technical Director at Huawei Norway. ■
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