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Intra-seasonal rainfall variability and herbivory affect the interaction outcome of two dryland plant species

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dc.contributor.authorVerwijmeren, M.
dc.contributor.authorBaudena, M.
dc.contributor.authorWassen, M.
dc.contributor.authorDíaz Sierra, Rubén
dc.contributor.authorSmit, C.
dc.contributor.authorRietkerk, Max
dc.date.accessioned2026-01-28T10:24:50Z
dc.date.available2026-01-28T10:24:50Z
dc.date.issued2021-04-23
dc.descriptionThe registered version of this article, first published in “Ecosphere, 12, 2021", is available online at the publisher's website: ESA, https://doi.org/10.1002/ecs2.3492
dc.descriptionLa versión registrada de este artículo, publicado por primera vez en “Ecosphere, 12, 2021", está disponible en línea en el sitio web del editor: ESA, https://doi.org/10.1002/ecs2.3492
dc.description.abstractIncreases in drought frequency in combination with overgrazing may result in degradation of (semi-) arid ecosystems. Facilitative interactions between plants are a key mechanism in preventing degradation, but it is poorly understood how they respond to increased stress by combined drought and herbivory. In this study, we used an ecohydrological model, to simulate the plant growth of two plant species interacting with each other under different rainfall and herbivory pressure scenarios. The functional traits of the two modeled plants were based on a prior field experiment in southeastern Spain, in which an unpalatable “nurse” species protected a palatable protégé species from herbivory. Moreover, the nurse species was more drought-resistant; that is, it had a lower wilting point, whereas the protégé species had a higher optimal growth rate. Firstly, we investigated the coexistence of the two plant species growing under a single limiting resource, focusing on the effect of intra-seasonal rainfall variability. We found that longer periods without rainfall within the wet season resulted in stable coexistence, whereas nearly constant rainfall led to competitive exclusion of the protégé by the nurse species. Secondly, we investigated how plant interactions varied along our studied gradients. Using the neighbor effect intensity and importance indices, we found that competitive effects increased with more constant rainfall. Moreover, higher herbivory rates resulted in increased facilitative effects of the nurse on the protégé species, but facilitative effects could only prevail over competitive effects under currently observed or higher intra-seasonal rainfall variability. This study highlights the relevance of intra-seasonal rainfall variability in explaining coexistence of species in dryland ecosystems and shows that increasing intra-seasonal rainfall variability or herbivory pressure can result in more facilitative effects from a nurse species. This information is crucial to obtain a better insight into the long-term coexistence of species, and the resulting stability of dryland ecosystems in response to future climate changeen
dc.description.provenanceMade available in DSpace on 2026-01-28T10:24:50Z (GMT). No. of bitstreams: 1 Diaz-Sierra_Ruben_Intraseasonal_rainfall_vari_RUBEN DIAZ SIERRA.pdf: 1239434 bytes, checksum: 8bd449fe02b8b314b7b8139556cd4ca5 (MD5) Previous issue date: 2021-04-23en
dc.description.versionversión publicada
dc.identifier.citationVerwijmeren, M., Baudena, M., Wassen, M., Díaz‐Sierra, R., Smit, C., & Rietkerk, M. (2021). Intra‐seasonal rainfall variability and herbivory affect the interaction outcome of two dryland plant species. Ecosphere, 12(4), e03492. https://doi.org/10.1002/ecs2.3492
dc.identifier.doihttps://doi.org/10.1002/ecs2.3492
dc.identifier.issn2150-8925
dc.identifier.urihttps://hdl.handle.net/20.500.14468/31603
dc.journal.issue4
dc.journal.titleEcosphere
dc.journal.volume12
dc.language.isoen
dc.page.initiale03492
dc.publisherEcological Society of America (ESA)
dc.relation.centerFacultad de Ciencias
dc.relation.departmentFísica Matemática y de Fluídos
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.es
dc.subject22 Física
dc.subject.keywordscompetitionen
dc.subject.keywordsdroughten
dc.subject.keywordsfacilitationen
dc.subject.keywordsherbivoryen
dc.subject.keywordsintra-seasonal rainfall variabilityen
dc.subject.keywordsplant co-occurrenceen
dc.titleIntra-seasonal rainfall variability and herbivory affect the interaction outcome of two dryland plant speciesen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationd2b129e6-953c-44ae-8e6c-b1c02beb6a97
relation.isAuthorOfPublication.latestForDiscoveryd2b129e6-953c-44ae-8e6c-b1c02beb6a97
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