The article discusses how the cold winter temperatures in Sweden do not significantly impact certain invasive species, which remain a problem for local ecosystems. According to Henrik Lange from the Swedish Environmental Protection Agency, the invasive flatworm has already been found in Skåne and can survive harsh conditions by burrowing into the ground. While extreme frost can affect these species, their ability to hide means they are not easily eradicated by colder weather.

Ted von Proschwitz, a slug and snail expert, notes that the Spanish slug can endure the winter by entering a state of dormancy, allowing it to emerge unscathed when spring arrives. He points out that while the effects of a harsh winter are marginal on this species, warmer winters can lead to increased activity earlier in the year, potentially exacerbating the problem with these pests.

The continuation of these invasive species poses a significant challenge for Swedish natural habitats, highlighting the importance of monitoring and managing these pests despite seasonal climate variations. The presence of such resilient invasive species complicates efforts to protect local biodiversity and maintain healthy ecosystems in the face of climate change and anthropogenic pressures.