Substrate requirements of red-listed saproxylic invertebrates in Sweden

摘要: To evaluate which qualities of dead wood have the highest conservational value for invertebrates, substrate requirements were recorded all 542 saproxylic (wood-living) red-listed invertebrates in Sweden. Preferred trees described each species seven category variables: tree species, stage decay, type main stem, coarseness part tree, light preference and microhabitat. For quality we quantified number insect using it that are specific to quality. The associated with different genera ranged from five 202. Species-rich had a higher proportion monophagous species. what extent faunas complementary other was also analysed. As decays, host range broadens flora decay fungi will probably take over as most important factor determining fauna. Because there many types rot required by an abundance similar looking trees, logs snags needed. Some 59% invertebrate can live sun-exposed sites. Most these favoured when forest burns at least 29 them more strongly fires. former category, leaving on clear cuts should be effective way increase amount breeding substrate. However, some especially those living last successional stages, dependent shaded Hollow trunks another microhabitat; 64 107 specialists. maintain need diversity management methods. Our data help decide how optimize conservation measures taken during operations.