Lars Eklundh is a natural geographer at Lund University and has studied how vegetation begins to grow ever earlier as it gets warmer.

- Normally, we expect it to have become a bit warmer during my lifetime for the whole earth. But for Sweden it is up to two degrees around the average temperature in March, April and May.

Several weeks earlier

The researchers have studied northern Europe with the help of satellite data between 2000 and 2016. During those years, it began to greenery 8-16 days earlier in large parts of Sweden - due to the increase in temperature during the spring months.

- We expect it to be maybe a half to a day's shift in spring, at worst, in the most recent period we have studied. And if you knock it out in the years since the turn of the 2000, it will be several weeks, says Lars Eklundh.

Problems for wildlife

He believes it can have major consequences. Vegetation should catch up and be synchronized so that wildlife and plant life are in line with each other.

- It may be that the flowers bloom at a time when insects do not have access to them, he says.

Watch the clip to hear more concrete examples of how nature comes into view.