Lake Sysmäjärvi – taking a closer look to mining impacted lake
(This blog post was originally published on May 10th 2021 at https://www.uef.fi/en/article/blog-winter-limnology-in-north-karelia) Text: Hannu Nykänen & Helena Jäntti | Photo: Carlos Palacín January, minus 15 degrees Celsius. The sun is about to come up. There is snow on the ice that occasionally collapses when you step on it. Underneath the snow, there is water. I […]