Bottom-up effects of woodland eutrophication: Interacting limiting nutrients determine herbivory frequency in northwestern Patagonia
Visualitza/Obre
Autor/a
Pérez-Méndez, N.
Fernández, M.M.
van Doorn, L.
Català-Forner, M.M.
Martínez, L.
Garibaldi, L.A.
Data de publicació
2021-11-12ISSN
0048-9697
Resum
Nutrient enrichment disrupts plant–animal interactions and ecosystem functioning globally. In woodland systems, the mechanisms of bottom-up turnover on plant–herbivore interactions remain understudied. Here, we performed a full-factorial field experiment to evaluate the interactive effects of nutrient addition (nitrogen, phosphorus, and/or potassium) on the assemblage of foliar herbivores and the interaction frequency with Berberis microphylla, a dominant shrub species in Patagonian woodlands. Additionally, we assessed whether these effects could be mediated by changes in vegetative traits and microhabitat characteristics (i.e., canopy cover) that may ultimately influence the foraging behavior of herbivores. The addition of nitrogen reduced the herbivory frequency by 41%, yet this effect was diluted in the presence of potassium. We found no effects of phosphorus addition. Our results suggest that the impact of multiple nutrient additions (N and K) on herbivory patterns could be mediated by changes in two important foliar traits, leaf size and leaf density. This study shows how multiple nutrient addition can change the magnitude of antagonistic plant–animal interactions in woodlands. Since herbivory by arthropods has a relevant role in net primary productivity, our results highlight the importance of buffering human-driven woodland eutrophication to maintain important ecological functions (e.g., herbivory) associated with antagonistic plant–animal interactions and avoiding ecosystem dysfunction.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
631 - Agricultura. Agronomia. Maquinària agrícola. Sòls. Edafologia agrícola
Pàgines
30
Publicat per
Elsevier
Publicat a
Science of The Total Environment
Citació
Pérez-Méndez, N., M.M. Fernández, L. van Doorn, M.M. Català-Forner, L. Martínez, and L.A. Garibaldi. 2021. "Bottom-Up Effects Of Woodland Eutrophication: Interacting Limiting Nutrients Determine Herbivory Frequency In Northwestern Patagonia". Science Of The Total Environment, 151608. doi:10.1016/j.scitotenv.2021.151608.
Programa
Cultius Extensius Sostenibles
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