Abstract

Non-native bark beetle species represent a major threat to forest ecosystems. The bark beetle Ips amitinus has recently expanded its range from Finland into northern Sweden. In the present study, we asked the following questions: (i) What is the distribution status in Sweden? (ii) Is there a difference in preference and reproductive success between Norway spruce and Scots pine? (iii) How common is the species after range expansion and does it influence the native community of bark-and wood-boring beetle species? We established the presence of I. amitinus and co-existence with the native community through checks of logging residues at 382 localities in northern Sweden. In addition, attack densities and repro-ductive success were compared between spruce and pine through investigating field material and by a no-choice rearing experiment. We found that I. amitinus is distributed over large parts of northern Sweden. Within its distribution area, it was found in 58% of all checked localities. It is one of the most common bark beetle species in logging residues and a higher proportion of Norway spruce objects compared to Scots pine were colonised. Attack density and reproductive success were higher in Norway spruce in field material and in the rearing experiment. There was no significant difference in the number of native bark-and wood-boring beetle taxa between localities where I. amitinus was present or absent.

Keywords

community ecology; ecological impact; invasion range; small spruce bark beetle; species interactions

Published in

NeoBiota
2023, Volume: 84, pages: 349-367
Publisher: PENSOFT PUBLISHERS

SLU Authors

• Cocos, Dragos

  • Department of Ecology, Swedish University of Agricultural Sciences
    

• Klapwijk, Maartje

  • Department of Ecology, Swedish University of Agricultural Sciences
    

• Schroeder, Martin

  • Department of Ecology, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss


UKÄ Subject classification

Ecology


Publication identifier

DOI: https://doi.org/10.3897/neobiota.84.86586

Permanent link to this page (URI)

https://res.slu.se/id/publ/122807