This is Carl Von Linné, called the father of taxonomy or something.
I don´t know who made the statue but it probably isn´t hard to find out. It´s standing on Petriplatsen by the main public library.
I think he looks totally rock and roll with that garter belt or whatever it´s called someone put on him. They put a tulip in his hand as well so he has something to study while he´s just standing there.