Finland cooperates with Norway to prevent harmful alien species from conquering fishing waters

Several measures have been planned to prevent the spread of fish classified as a harmful alien species. At the same time, it is necessary to consider whether the fight is harmful to other fish species.

This summer, the Tenojoki River may come back to the massive hiking of the humps. This is an odd year when the species typically rises to rivers.

Norway and Finland have already taken action to prevent the spread of a fish species classified as harmful alien species.

– If the Norwegian plans are kept and the humps can be stopped at the lower part of the river, then their hiking will not come to the Finnish side, says Erkinaro.

The adverse effects of fighting

The hump salmon is originally a salmon species in the Pacific, which was brought to Russia in the 1950s in the Wild Sea region. In recent years, the species has also begun to spread strongly to the rivers of Norway and Finland.

However, there is little research on its effects on the effects of the Atlantic, says Erkinaro, a Luke researcher.

However, Norway has outlined that the hump salvation will be rejected by all possible means.

– Norway has done a risk assessment and has decided that the potential disadvantages of the hunger salmon are so significant that the control measures are widely done, says Erkinaro.

However, the fight also causes disadvantages that may exceed the benefits of fighting.

For example, the hiking of hiking chicks, such as salmon and trout, and, on the other hand, the rise of salmon and trout and other hiking fish on the river may slow down or, at worst, if the river is completely blocked to stop the hub salmon.

– Then the question arises that the drug is more dangerous than the disease. How hard to fight against hump salmon? Erkinaro ponders.

In any case, more research and monitoring information on hiking and survival of different fish species is needed in the hump block. Some research projects related to this will be launched next summer.

Norway developed a new barrier

The 2023 experiences have been learned. Norway is now constructing a new obstacle dam to stop the rising hub block. The previous dam structure, which was located at the village of Tana Bru in Norway, did not sufficient to stop fish.

– Two years ago, large quantities of humps were passed through, and the fishing devices did not work as expected. Now the dam structure is at a different point where the river is only in one river. The barriers will reach the beach from the beach, Erkinaro explains.

Now the structures are designed to be modified to minimize the damage to the original salmon stock.

Finland is preparing for gear and exception

Although the main responsibility for combating hunger salmon is in Norway, Finland is also prepared for possible mass hiking. There are online fishing traps in the event of a significant amount of humps can be accessed to the Rajajoki. Owners of the fishing rights may, with special permission, target the fishing hunger.

– If the humps rising into the Tenojoki River, they are expected to be allowed as in the summer of 2023, says Erkinaro.

Atlantic fishing will be forbidden on the Finnish side in the Tenojoki next summer. However, fishing in other fish species is also allowed for travelers. You can also catch humps.

Harmful but utilized

Although humpback salmon is a harmful alien species, it is also a good food fish. Before spawning, when the hump salmon is still on the coast, in the river or at the beginning of the river hiking, the meat of the fish is greasy and of high quality.

\”It can provide fishing opportunities for both locals and travelers, especially in a situation where salmon fishing has been banned for years,\” says Erkinaro.

The potential peak of the upcoming summer of the summer is likely to take place in the first few weeks of July. How well the Norwegian dam works and how many humps can only be seen in Teno and, as a result, on the Finnish side, will only be seen during the summer.