Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands

12 pages, 4 figures, 1 table; The data that support the findings of this study is available in Dryad Digital Repository at https:// doi. org/ 10. 5061/ dryad. brv15 dvm3.

Detalles Bibliográficos
Autores: Virseda, Irene, Abdala-Roberts, L, Capó, M., Tack, A.J.M., Stenberg, J.A., Hansen, F., Covelo, F., Lago-Núñez, Beatriz, Fyllas, N.M., de la Mata, R., Cursach, J., Moreira Tomé, Xoaquín, Vázquez-González, Carla
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::68aebd1e81e4bac3fdcf5f3f80c37c58
Acceso en línea:http://hdl.handle.net/10261/426928
Access Level:acceso abierto
Palabra clave:Acorns
Frugivory
Herbivory
Island–mainland comparisons
Nutrients
Phenolics
Quercus
Seed predation
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spelling Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on IslandsVirseda, IreneAbdala-Roberts, LCapó, M.Tack, A.J.M.Stenberg, J.A.Hansen, F.Covelo, F.Lago-Núñez, BeatrizFyllas, N.M.de la Mata, R.Cursach, J.Moreira Tomé, XoaquínVázquez-González, CarlaAcornsFrugivoryHerbivoryIsland–mainland comparisonsNutrientsPhenolicsQuercusSeed predation12 pages, 4 figures, 1 table; The data that support the findings of this study is available in Dryad Digital Repository at https:// doi. org/ 10. 5061/ dryad. brv15 dvm3.Aim: Ecological theory predicts lower herbivory on islands. However, most island-mainland comparisons have focused on vegetative tissues, while reproductive structures remain understudied despite their direct influence on plant fitness and recruitment. This study investigates how insularity affects insect herbivory in oak (Quercus) acorns across multiple island-mainland regions and explores the role of acorn traits (chemical defences and nutrients) and climate as potential drivers. Location: Three island-mainland regions in Europe: Lesbos Island—mainland Greece, the Balearic Islands—mainland Spain, and Bornholm Island—mainland Sweden. Time Period: Acorns were collected in autumn 2023. Climatic data are long-term averages for each population. Major Taxa Studied: Seven oak (Quercus) species across regions. Methods: We aimed to sample up to three island and three mainland populations per species, with four trees per population, but logistical constraints reduced these numbers, resulting in a total of 150 sampled trees. We assessed acorn damage by insect herbivores and analysed chemical defences (phenolics) and nutrients (nitrogen and phosphorus) to test their influence on island–mainland differences in herbivory. Climatic data from the WorldClim database were used to assess climate-mediated insularity effects on acorn traits and herbivory. Results: Acorn damage did not differ overall between mainland and island populations. However, in the Balearic Islands, damage was higher than in mainland Spain, while no significant differences were found in the other regions. There were no general insularity effects on acorn traits, but a region-by-insularity interaction influenced phosphorus levels, with higher values in mainland Sweden than Bornholm Island, while the reverse was observed in Greece. Climate influenced acorn traits, but trait differences did not explain herbivory patterns. Main Conclusions: Our findings challenge the expectation that insularity reduces herbivory, highlighting region-specific processes. While climate influenced acorn traits, these traits did not mediate insularity effects on herbivory, suggesting local ecological factors drive variation across regions.This work was supported by Ministerio de Ciencia e Innovación (PID2022- 141761OB- I00, EUR2023-143463, FJC2021- 046888- I), Axencia Galega de Innovación (OTR13287, IN607A 2021/03, IN606B 2021/004, IN606C 2024/001), The Swedish Research Council (2021- 03784) and Junta de Extremadura (2352999ER003).John Wiley & SonsMinisterio de Ciencia e Innovación (España)Axencia Galega de InnovaciónSwedish Research CouncilJunta de ExtremaduraConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2026202620252026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/426928reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)http://dx.doi.org/10.1111/jbi.70052Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::68aebd1e81e4bac3fdcf5f3f80c37c582026-05-22T06:33:51Z
dc.title.none.fl_str_mv Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
title Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
spellingShingle Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
Virseda, Irene
Acorns
Frugivory
Herbivory
Island–mainland comparisons
Nutrients
Phenolics
Quercus
Seed predation
title_short Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
title_full Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
title_fullStr Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
title_full_unstemmed Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
title_sort Regional Variation in Insularity Effects on Acorn Herbivory in European Oaks Challenges Predictions of Lower Herbivory on Islands
dc.creator.none.fl_str_mv Virseda, Irene
Abdala-Roberts, L
Capó, M.
Tack, A.J.M.
Stenberg, J.A.
Hansen, F.
Covelo, F.
Lago-Núñez, Beatriz
Fyllas, N.M.
de la Mata, R.
Cursach, J.
Moreira Tomé, Xoaquín
Vázquez-González, Carla
author Virseda, Irene
author_facet Virseda, Irene
Abdala-Roberts, L
Capó, M.
Tack, A.J.M.
Stenberg, J.A.
Hansen, F.
Covelo, F.
Lago-Núñez, Beatriz
Fyllas, N.M.
de la Mata, R.
Cursach, J.
Moreira Tomé, Xoaquín
Vázquez-González, Carla
author_role author
author2 Abdala-Roberts, L
Capó, M.
Tack, A.J.M.
Stenberg, J.A.
Hansen, F.
Covelo, F.
Lago-Núñez, Beatriz
Fyllas, N.M.
de la Mata, R.
Cursach, J.
Moreira Tomé, Xoaquín
Vázquez-González, Carla
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Axencia Galega de Innovación
Swedish Research Council
Junta de Extremadura
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Acorns
Frugivory
Herbivory
Island–mainland comparisons
Nutrients
Phenolics
Quercus
Seed predation
topic Acorns
Frugivory
Herbivory
Island–mainland comparisons
Nutrients
Phenolics
Quercus
Seed predation
description 12 pages, 4 figures, 1 table; The data that support the findings of this study is available in Dryad Digital Repository at https:// doi. org/ 10. 5061/ dryad. brv15 dvm3.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/426928
url http://hdl.handle.net/10261/426928
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/jbi.70052
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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