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Changes in invertebrate food web structure between high- and low-productivity environments are driven by intermediate but not top-predator diet shifts

dc.contributor.authorMiller-Ter Kuile, Ana
dc.contributor.authorApigo, Austen
dc.contributor.authorBui, An
dc.contributor.authorButner, Kirsten
dc.contributor.authorChildress, Jasmine N.
dc.contributor.authorCopeland, Stephanie
dc.contributor.authorDifiore, Bartholomew P.
dc.contributor.authorForbes, Elizabeth S.
dc.contributor.authorKlope, Maggie
dc.contributor.authorMotta, Carina I. [UNESP]
dc.contributor.authorOrr, Devyn
dc.contributor.authorPlummer, Katherine A.
dc.contributor.authorPreston, Daniel L.
dc.contributor.authorYoung, Hillary S.
dc.contributor.institutionUniversity of California
dc.contributor.institutionNorthern Arizona University
dc.contributor.institutionUSDA Forest Service Rocky Mountain Research Station
dc.contributor.institutionJohns Hopkins Bloomberg School of Public Health
dc.contributor.institutionYale University
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUSDA ARS Eastern Oregon Agricultural Research Center
dc.contributor.institutionStanford University
dc.contributor.institutionColorado State University
dc.date.accessioned2023-07-29T12:34:01Z
dc.date.available2023-07-29T12:34:01Z
dc.date.issued2022-10-26
dc.description.abstractPredator-prey interactions shape ecosystem stability and are influenced by changes in ecosystem productivity. However, because multiple biotic and abiotic drivers shape the trophic responses of predators to productivity, we often observe patterns, but not mechanisms, by which productivity drives food web structure. One way to capture mechanisms shaping trophic responses is to quantify trophic interactions among multiple trophic groups and by using complementary metrics of trophic ecology. In this study, we combine two diet-tracing methods: diet DNA and stable isotopes, for two trophic groups (top predators and intermediate predators) in both low- and high-productivity habitats to elucidate where in the food chain trophic structure shifts in response to changes in underlying ecosystem productivity. We demonstrate that while top predators show increases in isotopic trophic position (δ 15 N) with productivity, neither their isotopic niche size nor their DNA diet composition changes. Conversely, intermediate predators show clear turnover in DNA diet composition towards a more predatory prey base in high-productivity habitats. Taking this multi-trophic approach highlights how predator identity shapes responses in predator-prey interactions across environments with different underlying productivity, building predictive power for understanding the outcomes of ongoing anthropogenic change.en
dc.description.affiliationEcology Evolution and Marine Biology Department University of California
dc.description.affiliationSchool of Informatics Computing and Cyber Systems Northern Arizona University
dc.description.affiliationUSDA Forest Service Rocky Mountain Research Station
dc.description.affiliationDepartment of Molecular Microbiology and Immunology Johns Hopkins Bloomberg School of Public Health
dc.description.affiliationYale School of the Environment Yale University
dc.description.affiliationDepartamento de Biodiversidade Universidade Estadual Paulista Júlio de Mesquita Filho, Av. 24 A, 1515 - Bela Vista, SP
dc.description.affiliationUSDA ARS Eastern Oregon Agricultural Research Center
dc.description.affiliationDepartment of Biology Stanford University
dc.description.affiliationDepartment of Fish Wildlife and Conservation Biology Colorado State University
dc.description.affiliationUnespDepartamento de Biodiversidade Universidade Estadual Paulista Júlio de Mesquita Filho, Av. 24 A, 1515 - Bela Vista, SP
dc.identifierhttp://dx.doi.org/10.1098/rsbl.2022.0364
dc.identifier.citationBiology Letters, v. 18, n. 10, 2022.
dc.identifier.doi10.1098/rsbl.2022.0364
dc.identifier.issn1744-957X
dc.identifier.issn1744-9561
dc.identifier.scopus2-s2.0-85140856014
dc.identifier.urihttp://hdl.handle.net/11449/246187
dc.language.isoeng
dc.relation.ispartofBiology Letters
dc.sourceScopus
dc.subjectAraneae
dc.subjectdiet DNA metabarcoding
dc.subjectfood chain
dc.subjectstable isotope analysis
dc.titleChanges in invertebrate food web structure between high- and low-productivity environments are driven by intermediate but not top-predator diet shiftsen
dc.typeArtigo
dspace.entity.typePublication
unesp.author.orcid0000-0003-2599-5158 0000-0003-2599-5158 0000-0003-2599-5158[1]
unesp.author.orcid0000-0003-3462-0323 0000-0003-3462-0323[8]
unesp.author.orcid0000-0002-1486-581X[12]

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