Metabarcoding of canopy arthropods reveals negative impacts of forestry insecticides on community structure across multiple taxa

Benjamin Leroy, Sebastian Seibold, Jérôme Morinière, Vedran Bozicevic, Jessica Jaworek, Nicolas Roth, Sebastian Vogel, Sharon Zytynska, Ralf Petercord, Peter Eichel & Wolfgang Weisser
1. Insecticides used to combat outbreaks of forest defoliators can adversely affect non-target arthropods. Forest use insecticides typically suppress Lepidoptera larvae which are the keystone of the canopy community of deciduous oak forests. The abrupt removal of this dominant component of the food web could have far-reaching implications for forest ecosystems, yet it is rarely investigated in practice owing to several methodological shortcomings. The taxonomic impediment and the biased nature of arthropod sampling techniques particularly...
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