Author(s): Einar Tesaker

Linked Author(s): Einar Tesaker

Keywords: No Keywords

Abstract: A working group named "Under Ice Habitat" was established during the meeting of the IAHR Ice Engineering Section at the 14th International Symposium on Ice in Hanover, NH 1998. The group shall report to the Ice Symposium in Poland in 2000. The ambitious scope of the working group was understood to include: • Review and describe state-of-the-art, including synthesis of presentations in international periodica and conferences on Ice Related Hydraulics and Habitat Hydraulics, (IAHR Ice Symposia, Nordic Research Basin' Workshops, Int. Symposia on Habitat hydraulics, Engineering and Environmental literature related to ice, etc. ) • Identify research needs, and if possible initiate research on selected topics, e. g. : - Velocities, current distribution and geometry under ice and during ice formation - Preferred velocities by fish under winter conditions - Effects of ice cover on temperature, light and water quality - Ice formation and break up effects on vegetation, survival of roe etc • Include winter effects in habitat models. The present HABITAT model has been based on data from field research under ice-free conditions. In order to incorporate ice conditions in the model scope, adjustment and new routines are needed, with reference to research on winter habitat. • Evaluate practical methods for improvement of the winter habitat

DOI:

Year: 2000