Johan Watz (Associate Professor at University of Karlstad Biology Department) together with others from the department, DHI Sverige and Fortum Sverige have recently published an article with VATTEN- Journal of Water Management and Research. The article, entitled ” HOW MUCH WATER DO SEA TROUT NEED? A COMPARISON BETWEEN A CORRELATIVE AND AN INDIVIDUAL-BASED MODEL TO PREDICT EFFECTS OF FLOW ON STREAM FISH POPULATIONS” used both a correlative model and an individual-based fish habitat model called InSTREM 7 as a management tool to assess water requirements for salmon and trout in a river reach located below Blanka-ström hydropower plant in river Emån, Sweden.

To read more about the paper this paper visit

On Thursday 23 August Steve Railsback from Humboldt State University, California USA, will give a seminar at Karlstad University titled: “Can Big Complex Models be Useful? Lessons from 20 Years of Salmonid Modeling for River Management”.

The seminar will start at 10:00 in room 5F416, everyone is welcome to attend the seminar.

Steve will give a brief overview and history of individual-based trout and salmon models, and provide examples of how the modeling experience produced general knowledge about ecology and fish.

Read more about Steve’s work on individual-based modeling and ecology here.



Tomorrow, December 15, Åsa Enefalk, PhD Student at Karlstad University, will give a seminar titled ”Fine wood and burbot – do they affect trout sheltering at low water temperatures?”

The seminar will be given at 13:15 in room 5F416 on Karlstad University. Everyone is welcome to attend!