Beetle diversity in dead wood is lower in non‐native than native tree species, especially those more distantly related to native species

Non-native tree species are widely used in forest plantations. This may have negative consequences for biodiversity. Hitherto, most studies compared diversity between native and non-native stands, which makes it difficult to separate the impact of per se from stand characteristics. Our study, conducted south Sweden, compares saproxylic beetle across different nutritional groups, dead wood two four a block design after one three seasons. Such an approach allows analysis se. Mean richness (± SD) log was lower than (non-native trees: lodgepole pine: 10.7 5.3); Sitka spruce: 8.5 4.3), Douglas fir: 7.1 Japanese larch 9.4 4.6); Norway 12.0 6.0), Scots 12.3 5.2)). Sample-based rarefaction revealed that when only were pooled, higher all combined. The difference composition among strongly driven by bark consumers first season, while predators fungivores, differences smaller. Species differed season. Dissimilarity positively correlated with phylogenetic distances species. remotely related trees Of studied species, pine more closely consistently harboured richness. Synthesis applications. Although also harbour communities, use especially those reduces local beetles. Thus, biodiversity conservation, extensive is not recommended as this increases risk losing biodiversity, they distantly