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dc.contributor.author
Xi, Xinqiang
dc.contributor.author
Zhang, Beibei
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Wang, Ying
dc.contributor.author
Vazquez, Diego P.
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Dong, Yuran
dc.contributor.author
Sun, Shucun
dc.date.available
2021-02-01T14:50:35Z
dc.date.issued
2019-09
dc.identifier.citation
Xi, Xinqiang; Zhang, Beibei; Wang, Ying; Vazquez, Diego P.; Dong, Yuran; et al.; Experimental reduction of plant abundance changes interaction frequency of a tri-trophic micro-food web: contrasting responses of generalists and specialists; Wiley Blackwell Publishing, Inc; Journal of Ecology; 108; 2; 9-2019; 415-423
dc.identifier.issn
0022-0477
dc.identifier.uri
http://hdl.handle.net/11336/124355
dc.description.abstract
Species abundance is vulnerable to climate change and anthropogenic impact. Although numerous studies have examined the food web response to species loss, their response (e.g. in network topology and interaction frequency) to changes in species abundance has received little attention.We experimentally reduced the abundance (by c. 60%) of one host plant species (Saussurea nigrescens ) in a tri‐trophic micro‐food web consisting of two common Asteraceae species (S. nigrescens and Anaphalis flavescens ), their pre‐dispersal seed predators (tephritid flies) and the parasitoid wasps that feed on these seed predators.The neutral process hypothesis posits that network topology and interaction frequency are determined by the relative abundances of the participating species. Accordingly, we hypothesized that interaction frequency (indicated by the rate of flies infesting plants and of parasitoid wasps parasitizing flies) would decrease with decreasing abundance of host plant abundance.Consistent with the neutral process hypothesis, abundance reduction significantly decreased the rate of generalist flies infesting the manipulated plant host species, but increased the rate on unmanipulated plant species. In contrast, abundance reduction significantly increased the rate of specialist flies infesting the manipulated species, but it had no demonstrable effect on the specialists on the unmanipulated plant host.Moreover, abundance reduction significantly increased the rate of parasitoid wasps (as a species group) parasitizing flies in the manipulated species, but decreased the rate of the unmanipulated species. These results were not attributable to neutral processes, but can be explained by adaptive foraging theory. In addition, experimental manipulation did not shift the qualitative presence?absence of the linkages in the micro‐food web, and the change in the abundance of both fly and wasp species was smaller than the abundance changes of the manipulated plant species.Synthesis . Our results indicate that both neutral processes and/or adaptive foraging likely contributed to food web stability in responses to changes in species abundance. Because species abundance is vulnerable to abiotic and biotic environmental changes, we suggest more research should be conducted to understand how food webs respond to climate change and anthropogenic disturbance.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ADAPTIVE FORAGING
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FOOD WEB STABILITY
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INTERACTION FREQUENCY
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NEUTRAL PROCESS
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TROPHIC CASCADE
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Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Experimental reduction of plant abundance changes interaction frequency of a tri-trophic micro-food web: contrasting responses of generalists and specialists
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-25T16:39:49Z
dc.journal.volume
108
dc.journal.number
2
dc.journal.pagination
415-423
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Xi, Xinqiang. Nanjing University; China
dc.description.fil
Fil: Zhang, Beibei. Nanjing University; China
dc.description.fil
Fil: Wang, Ying. Nanjing University; China
dc.description.fil
Fil: Vazquez, Diego P.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
dc.description.fil
Fil: Dong, Yuran. Nanjing University; China
dc.description.fil
Fil: Sun, Shucun. Nanjing University; China
dc.journal.title
Journal of Ecology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/1365-2745.13270
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/1365-2745.13270
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