Forest decline differentially affects trophic guilds of canopy-dwelling beetles

Autor: Benoit Nusillard, Xavier Pineau, Ravene Brousse, Romain Ledet, Guilhem Parmain, Tiphanie Fontaine-Guenel, Christophe Bouget, Aurélien Sallé, Cécile Vincent-Barbaroux
Přispěvatelé: Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), Université d'Orléans (UO)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Ecosystèmes forestiers (UR EFNO), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Annals of Forest Science
Annals of Forest Science, Springer Verlag/EDP Sciences, 2020, 77 (3), ⟨10.1007/s13595-020-00990-w⟩
Annals of Forest Science, Springer Nature (since 2011)/EDP Science (until 2010), 2020, 77 (3), ⟨10.1007/s13595-020-00990-w⟩
ISSN: 1286-4560
1297-966X
DOI: 10.1101/2020.02.11.943753
Popis: ContextDecline in a context of climate change is expected to induce considerable changes in forest structure, potentially affecting habitat opportunities and trophic resources for numerous species. Nonetheless, the consequences of decline on forest biodiversity have rarely been studied.AimWe aimed to characterize the impact of oak decline on different guilds of canopy-dwelling beetles.MethodsBeetles were sampled for three consecutive years in oak stands exhibiting different levels of decline. Several guilds were considered: (i) Buprestidae, (ii) other saproxylic beetles split into wood-boring species and non-wood-boring species, (iii) seed-eating weevils, and (iv) specialist and generalist leaf-eating weevils.ResultsOverall, decline had positive effects on the abundance and biomass of beetles, though contrasting variations were observed at the species or guild levels. Xylophagous species, especially the main oak-associated buprestids, and other saproxylic species benefitted from decline conditions. However, at odds with the insect performance hypothesis, decline had a positive effect on generalist phyllophagous species, a negative effect on specialist phyllophagous species, and a null effect on seminiphagous species.ConclusionThe increase in species richness for saproxylic and phyllophagous beetle communities suggests that decline might promote forest biodiversity. Our results call for further studies to thoroughly assess the functional outcomes of forest decline, and to suggest management strategies for conservation biologists.Key messageDecline can affect the structure, resources and microclimates of the forest canopy, and potentially have cascading effects on canopy-dwelling species. Our survey shows that an oak decline can promote saproxylic beetles, especially xylophagous ones, and generalist phyllophagous weevils. However, it negatively affects specialist phyllophagous species and has no effect on seminiphagous weevils.
Databáze: OpenAIRE
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