At the same time Norwegian salmon rivers are being invaded by an unwanted species; Pink salmon or humpback salmon, which is a species of anadromous fish in the salmon family. It is the smallest and most abundant of the Pacific salmon.
Must save the wild salmon with an intelligent trap
Rune Rørstad from Ålesund is collaborating with, among others, Huawei on a system that will stop humpback salmon from invading Norwegian salmon rivers.
The Norwegian wild salmon is endangered and under strong pressure from many quarters. One of the new threats is the invasions of the alien species humpback salmon that disrupt wild salmon reproduction:
The humpback salmon, especially the males, get a characteristic hump on the front of the back during the spawning season
PHOTO::HENRIK H. BERNTSEN / NINA HENRIK H. BERNTSEN / NINA / NTB
This comes on top of the escaped farmed salmon. Humpback salmon spawn every two years, and river owners and salmon fishermen hold their breath before the 2023 season. It is expected to offer a humpback salmon nightmare in several places.
- In some rivers, 20,000 to 25,000 humpback salmon are expected in the course of a month and a half.
Rune Rørstad and his partners believe they have a groundbreaking solution, an intelligent “fish trap”.
And the partners are not just anyone; - We were contacted before the salmon season in 2021, by Huawei, Rune Rørstad tells Sunnmørsposten. The Chinese technology giant had started a preliminary project together with the Berlevåg hunting and fishing association. They were to put out cameras in the river and build artificial intelligence around recognizing different fish species.
- This is part of Huawei’s “tech for nature” initiative, which is a way for them to show social responsibility. It is about using technology to support something that helps to save nature or endangered species, Rørstad explains.
- The scheme we are talking about here is easy to understand: the river is closed with a fence, and fish and animals that want to swim up are forced through a tunnel. There, a camera registers the species in question. Wild salmon, sea trout and other of the river’s natural inhabitants are allowed to pass; the hatch opens. Farmed and humpback salmon, on the other hand, are rejected, led to the side and caught.
Rørstad is the leader and largest owner of the company Troll Systems AS. Their job is to create the infrastructure itself.
Huawei is responsible for the camera technology, while a third company, Simula consulting, is developing the artificial intelligence.
- I am not a biologist, but a building and construction engineer. I can still say for sure that 2021 was catastrophic. The only thing we know about next year is that it will be even worse, says Rørstad.
- Everyone in the hunters’ and fishermen’s associations is still worn out after last year. They worked around the clock to sort out as much of the salmon as possible.
It will soon be ready, but will always have to be ordered in advance. - First, the individual river must be measured and it is decided where things should stand.
Neither hunters’ and fishermen’s associations nor landowners alone will be able to afford to buy, the Troll Systems leader believes.
The price tag will probably be around one million kroner per river. - For such projects, they are happy to apply for funding from the County Administrator or the Norwegian Environment Agency, but no one has made such major moves as this before, but the Norwegian Environment Agency has set aside funds for a number of such projects.
Furthermore, an effort is also needed to operate the “fishing trap” during the spawning season.
- It should be in use throughout the season, and should be taken down before there is ice in the river. Then it must be re-installed next season.
During the season the traps must be attended - all fish that are not allowed to swim further go into a catch cage and the attendees have to manually sort out this fish. Much of the sorted fish can be eaten. Humpback salmon is considered a good food fish, although only before it has spawned.
From Sunday 26 June, the company will in a couple of days drive equipment from Bodø, to Berlevåg, which is located in the far north of Finnmark. There the scheme will be tried out on farmed salmon.
- Thursday will be the official opening, or let’s say closing, the entrepreneur says.
From smp.no today (behind paywall) Google translation with a little help
PS> Maybe useful to stop invasive species, like Atlantic farmed salmon, in US rivers?
Oh forgot, that probably wouldn’t be allowed if Huawei equipment is involved.