It's changing quite rapidly, and the weather is weirding on my side of things. I'm heading for the north coast of the Kola peninsula in 2 weeks. There's been almost no rain for the last 2-3 months. The rivers are 50-60 cm below average. I was hoping for some cloudberries in addition to the odd trout, but I can't see that happening. Temperatures have been up to 34 C as far as I know.
I've fished and travelled the north coast of Kola for nearly a decade and norwegian Lapland for twice as long. The insect hatches are coming earlier and earlier, and spring is early. The most striking and easily visible change is the vegetation. The tundra on the norwegian side is "slowly" turning into forest.
Trout are displacing arctic charr in a couple of rivers i know of. The fish-scientists I talk to blame a combination of temperature and possibly pressure from sea-lice from the fish farms. The displacement is happening in rivers where none of the fish go to sea as well, so I'll put my money on temperature.
I'll give a brief report about the state of things on the ground up there when I get back.