Noor, Sabina, Despland, Emma, Montoro Girona, Miguel 
ORCID: https://orcid.org/0000-0002-6916-3639 et Work, Timothy
(2026).
Longhorn beetles (Coleoptera: Cerambycidae) community composition around different boreal infrastructures.
Journal of Environmental Management
, 400
.
Article 128791.
doi:10.1016/j.jenvman.2026.128791
Repéré dans Depositum à
https://depositum.uqat.ca/id/eprint/1827
Résumé
Wood processing, mining, and recreational infrastructures facilitate the transport and establishment of woodboring insects. Longhorn beetles (Coleoptera: Cerambycidae) are woodborers that typically develop in stressed or dead trees and are inadvertently transported in wood products, creating opportunities for exotic species to invade and expand their range around infrastructures. To understand how these infrastructures influence longhorn diversity, abundance, and potential invasions, we sampled longhorn beetles in 2021 and 2022 from 11 sawmills, 10 mines, 11 campgrounds, and 12 control (unmanaged) forest sites throughout northwestern Quebec (Canada) using broadly attractive blends of pheromone and host volatiles to assess infrastructure-related shifts in community composition compared to undisturbed forest stands. The most abundant species observed across all infrastructures was Monochamus scutellatus scutellatus Say, comprising over 60 of the total individuals collected, followed by Monochamus mutator LeConte (17 ) and Tetropium cinnamopterum Kirby (7 ). We did not record any exotic species; this absence may reflect community-level resistance from diverse native longhorn assemblages. Sawmill sites had the highest diversity and evenness and showed increased abundance of several common native species. However, longhorn communities varied more with forest composition than infrastructure type. NMDS distinguished longhorns linked to balsam fir from those associated with Jack pine, like M. mutator and Rhagium inquisitor Linnaeus, and separated beetles in white spruce and pine, such as Tetropium cinnamopterum Kirby and T. schwarzianum Casey, from those in early-succession hardwoods. Increased abundance of longhorns near sawmills came from diverse forest types. We do not find evidence for increased invasion risk near infrastructures, but ongoing surveillance remains crucial.
| Type de document: | Article |
|---|---|
| Informations complémentaires: | La version officielle de cet article a été publiée dans la revue Journal of Environmental Management en 2026. Le texte intégral de l’article est disponible en libre accès sur le site de la revue : https://doi.org/10.1016/j.jenvman.2026.128791 |
| Mots-clés libres: | Boreal forests; Campgrounds; Mines; Sawmills; Woodborers; Monochamus; Tetropium |
| Divisions: | Forêts |
| Date de dépôt: | 26 mai 2026 17:58 |
| Dernière modification: | 26 mai 2026 17:58 |
| URI: | https://depositum.uqat.ca/id/eprint/1827 |
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