>

Hans-Jørn Aggerholm Christensen

Fisheries Technician

Hans-Jørn Aggerholm Christensen

National Institute of Aquatic Resources

Section for Freshwater Fisheries and Ecology

Vejlsøvej 39

Building Silkeborg-039 Room 1.39

8600 Silkeborg

Danmark

hjc@aqua.dtu.dk