title: A standardised protocol for sampling cavity-nesting Hymenoptera using trap nests
abstract: Hymenoptera are among the most important members of temperate ecosystems, both for their contribution to ecosystem services and their role in overall ecosystem functioning. While they have received considerable research attention due to their ecological significance and recent declines, substantial knowledge gaps remain regarding their ecology, phenology, and population trajectories. Trap nests are a popular sampling tool for cavity-nesting Hymenoptera, offering excellent potential to fill these
journal: Journal of Hymenoptera Research