Vertical distribution of saproxylic beetles within snag trunks retained in plantation forests

Abstract

from the lower trunk (25 spp.) or the upper trunk (30 spp.). However, rarefaction-extrapolation analysis did not demonstrate a significant difference in species richness among the log positions. Beetle assemblages were separated into two groups by constrained correspondence analysis; one group emerged only from lower and upper trunk logs, while another emerged mainly from basal stem logs. Additionally, vertical position had a significant effect on the distribution of the five main species. Our results show that beetle assemblages within snags in the plantation forests were highly variable, and retaining a sufficient number of high stumps may be important for saproxylic beetle conservation in plantation forests. We propose 'retention thinning' as an appropriate method to combine efficient timber production with biodiversity conservation in plantation forests.

Medium‐term effects of active management on the structure of mature Douglas‐fir (Pseudotsuga menziesii) stands

“…, Vonhof and Barclay ), others including cavity‐nesting vertebrates, saproxylic invertebrates, and lichens will not or will use them for different purposes than snags (Bull and Holthausen , Onodera et al. , Santaniello et al. ).…”

Effects of different tree harvesting intensities on saproxylic beetle diversity in coniferous and broad‐leaved mixed forest in the Changbai Mountain, Northeast, China

“…Temperature can have a positive effect on beetle diversity, especially in the early stages after tree death (Lachat et al, 2016). However, excessive light can accelerate the water loss from dead wood in the forest, which is not conducive to the survival and reproduction of some beetles (Onodera et al, 2017), but dry dead wood is an important food resource for some longicorns, buprestids and Bostrichidae (Cárdenas et al, 2020). The light condition also affects the abundance of saproxylic beetles in the dead branches (Hardersen et al, 2020).…”

“…However, this effect varied with the method of harvesting, the treatment of residues and the time of harvesting (Larrieu et al, 2014; Rubene et al, 2017). Keeping stand structure relatively stable and stand factors diverse can greatly reduce the impact of harvesting on the diversity of saproxylic beetles (Parisi et al, 2016), especially for some endangered species (Onodera et al, 2017; Ranlund & Victorsson, 2018; Victorsson & Jonsell, 2016; Work et al, 2016). The distribution of saproxylic beetles is affected by residue disposal methods used during tree harvest (Janssen et al, 2011).…”