Impacts of urbanization on insect herbivory and plant defences in oak trees
Visualitza/Obre
Autor/a
Moreira, Xoaquín
Abdala-Roberts, Luis
Berny Mier y Teran, Jorge C.
Covelo, Felisa
de la Mata, Raúl
Francisco, Marta
Hardwick, Bess
Matheus Pires, Ricardo
Roslin, Tomas
Schigel, Dmitry S.
ten Hoopen, Jan P. J. G.
Timmermans, Bart G. H.
van Dijk, Laura J. A.
Castagneyrol, Bastien
Tack, Ayco J. M.
Data de publicació
2018-07-23ISSN
0030-1299
Resum
Systematic comparisons of species interactions in urban versus rural environments can
improve our understanding of shifts in ecological processes due to urbanization. However,
such studies are relatively uncommon and the mechanisms driving urbanization effects
on species interactions (e.g. between plants and insect herbivores) remain elusive. Here
we investigated the effects of urbanization on leaf herbivory by insect chewers and miners
associated with the English oak Quercus robur by sampling trees in rural and urban
areas throughout most of the latitudinal distribution of this species. In performing these
comparisons, we also controlled for the size of the urban areas (18 cities) and gathered data
on CO
2 emissions. In addition, we assessed whether urbanization affected leaf chemical
defences (phenolic compounds) and nutritional traits (phosphorus and nitrogen), and
whether such changes correlated with herbivory levels. Urbanization significantly reduced
leaf chewer damage but did not affect leaf miners. In addition, we found that leaves
from urban locations had lower levels of chemical defences (condensed and hydrolysable
tannins) and higher levels of nutrients (nitrogen and phosphorus) compared to leaves
in rural locations. The magnitude of urbanization effects on herbivory and leaf defences
was not contingent upon city size. Importantly, while the effects of urbanization on
chemical defences were associated with CO
2 emissions, changes in leaf chewer damage
were not associated with either leaf traits or CO
2 levels. These results suggest that effects
of urbanization on herbivory occur through mechanisms other than changes in the plant
traits measured here. Overall, our simultaneous assessment of insect herbivory, plant traits
and abiotic correlates advances our understanding of the main drivers of urbanization
effects on plant–herbivore interactions.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
Anglès
Matèries (CDU)
630 - Silvicultura. Arboricultura
Pàgines
33
Publicat per
Wiley
Publicat a
Oikos
Citació
Moreira, Xoaquín, Luis Abdala-Roberts, Jorge C. Berny Mier y Teran, Felisa Covelo, Raúl de la Mata, Marta Francisco, and Bess Hardwick et al. 2018. "Impacts Of Urbanization On Insect Herbivory And Plant Defences In Oak Trees". Oikos 128 (1): 113-123. Wiley. doi:10.1111/oik.05497.
Número de l'acord de la subvenció
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2015-70748-R/ES/Factores que determinan la existencia de síndromes defensivos en especies del género Quercus en la península ibérica: Implicaciones para la conservación de especies amenazadas/
MINECO/Programa Estatal de promoción del talento y su empleabilidad en I+D+I/RYC-2013-13230/ES/ /
Programa
Fructicultura
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