Abstract
The comprehensive goal for this project is to gather data useful for making conservation strategies in the Swedish forests. The project deals with saproxylic (wood-living) insects, one of the groups most disfavoured of modern forestry practicies. The main goals are: 1. To compare the distribution of the fauna inhabiting dead wood substrates with different dynamics, or turn over rates. 2. To search for threshold amounts of dead trees that are required for the survival of different species. 3. To understand over what distances the saproxylic insects move in the landscape. Three systems with different turn over rates of the substrate will be studied: old hollow oaks, polypore fruiting bodies and fresh dead wood. The study will relate the occurrence of species to the amounts of substrate on a landscape scale. The mapping is done for one study landscape (northern Hälsingland) in cooperation with other ongoing projects. For the hollow oaks data atUppalndsstiftelsen will be the base for a similar mapping process. Except for the mapping, a field experiment on polypore-living insects was done the first year. Three manuscripts based on data collected earlier were also submitted during this year.
Sweden