The evolutionary species pool concept does not explain occurrence patterns of dead-wood-dependent organisms: implications for logging residue extraction

• DOI: 10.1007/s00442-019-04473-2
• Publication Date: 2019-07-27T09:02:31Z
• Authors: Thomas Ranius; Aino Hämäläinen; Jörgen Sjögren; Matthew Hiron; Dennis Jonason; Ariana Kubart; Martin Schroeder; Anders Dahlberg; Göran Thor; Mats Jonsell
• Keywords: Coarse Woody Debris

Emulation of natural disturbances is often regarded as a key measure to make forestry biodiversity-oriented. Consequently, extraction logging residues assumed have little negative effect in comparison dead wood mainly formed at disturbances. This consistent with the evolutionary species pool hypothesis, which suggests that most are adapted naturally abundant habitats. We tested this hypothesis for dead-wood-dependent macrofungi, lichens, and beetles boreal forest landscape central Sweden, assuming conditions similar today's unmanaged forest. No occurrence patterns, groups we investigated, were hypothesis. Overall, stumps snags had highest habitat quality (measured average population density equal weight given each species) fine woody debris lowest, was unexpected, since rarest dead-wood type conclude concept did not explain patterns species' occurrences, two reasons, reliable general rule thumb: (1) what constitute habitats harbouring different communities can only be understood from habitat-specific studies (2) suitability affected by their biophysical characteristics. Thus, emulation may promote biodiversity, but empirical needed understand how should emulated. also stump bioenergy associated larger risks biodiversity than extraction.