Boiler-appeal apprehends the invasion of nervous

Already strongly rooted in Estrie, the Nerprun has entered the Chaudière-Appalaches in recent years. Meanwhile, Without better prevention, experts now fear that this unwanted shrub invades the region.

It’s really an economic nuisance in our forestsprovides the Acéricole advisor to the Association of Boisées de la Beauce (APBB). For example, Michaël Cliche.

It is not like dandelion. for example, which is also exotic, which has an invasive character, but which does not cause economic losses as suchhe illustrates.

From the outset. In addition, local players in the forest environment met by Radio-Canada are unanimous: it is very likely that the nervous cannot be completely eradicated from the ground. Rather, they hope to see it be better controlled in order to slow down its spread.

Spared … for now

According to Jean-Pierre Faucher. director of the Private Forests Agency for Appalachians (AMVAP), the very first nervous in the region was reported in 2021, in Saint-Damien-de-Buckland, in the MRC de Bellechasse.

Since then. he has spread in four other MRC of boilers-appalanches, that is that of Etchemins, Lotbinière, Islet boiler-appeal apprehends invasion nervous and Appalachians.

We are at invasion levels which are still quite low unlike Estrie. Montérégie or Bois-Francssupports the training engineer by training. Nevertheless, the portrait could quickly darken, he warns.

If we wait too long. he will take up room, invade forest environments, natural environments, wetlands. He is really able to settle in a lot of places.

In such a scenario, it would then become very difficult for any other native species to push on the affected territory.

Concretely. erablières could, for example, be unable to renew their long -term maple stock and take the sap necessary for their economic activities, projects Michaël Cliche.

Forest entrepreneurs may also have to assume costs associated with the management of the nervous that surpass their profits from the exploitation of spruce wood. he adds.

The director of the Bassins of Basins of the Oak Zone, Karine Vachon, shares these same fears. For three years, his team has been busy raising awareness among their various partners boiler-appeal apprehends invasion nervous in the risks of nervous.

At low cost, we can warn, rather than healingshe says to government bodies.

Difficult to control

For Michaël Cliche. the first step towards better prevention of the problem is to make it known to the public. A good part of the population does not know how to recognize the Nerprun. like several other exotic species which have pervasive potentialfind L’Etr.

The difficulty of overflowing nervous on a territory is explained by the multiple reproductive methods from which he benefits.

Birds, rodents and humans contribute to it by moving its fruits whose multiple seeds are then sown elsewhere. The latter can remain alive in the ground for two to five years. and thus push at any time, specifies Jean-Pierre Faucher.

Once planted, a nervous reproduces very quicklyinsists Michaël Cliche.

Among the other means of multiplying. the nervous counts on vegetable reproduction, via its strain discharges, and takes advantage of the chemical composition of its leaves to modify the soil and make it more conducive to its reproduction.

As for the solutions to slow it down, they are scarce. Currently used method. uprooting can be effective in the face of a few young shrubs, but is less in the case of a more mature abundance.

With information from Jérémie Camirand