Terrestrial Support Of Aquatic Food Webs Depends On Light Inputs: A Geographically-replicated Test Using Tank Bromeliads

dc.creatorFarjalla
dc.creatorVinicius F.; Gonzalez
dc.creatorAngelica L.; Cereghino
dc.creatorRegis; Dezerald
dc.creatorOlivier; Marino
dc.creatorNicholas A. C.; Piccoli
dc.creatorGustavo C. O.; Richardson
dc.creatorBarbara A.; Richardson
dc.creatorMichael J.; Romero
dc.creatorGustavo Q.; Srivastava
dc.creatorDiane S.
dc.date2016
dc.dateagos
dc.date2017-11-13T11:31:23Z
dc.date2017-11-13T11:31:23Z
dc.date.accessioned2018-03-29T05:46:20Z
dc.date.available2018-03-29T05:46:20Z
dc.identifierEcology. Wiley-blackwell, v. 97, p. 2147 - 2156, 2016.
dc.identifier0012-9658
dc.identifier1939-9170
dc.identifierWOS:000380749600026
dc.identifier10.1002/ecy.1432
dc.identifierhttp://onlinelibrary-wiley-com.ez88.periodicos.capes.gov.br/doi/10.1002/ecy.1432/full
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/325901
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1362907
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFood webs of freshwater ecosystems can be subsidized by allochthonous resources. However, it is still unknown which environmental factors regulate the relative consumption of allochthonous resources in relation to autochthonous resources. Here, we evaluated the importance of allochthonous resources (litterfall) for the aquatic food webs in Neotropical tank bromeliads, a naturally replicated aquatic microcosm. Aquatic invertebrates were sampled in more than 100 bromeliads within either open or shaded habitats and within five geographically distinct sites located in four different countries. Using stable isotope analyses, we determined that allochthonous sources comprised 74% (+/- 17%) of the food resources of aquatic invertebrates. However, the allochthonous contribution to aquatic invertebrates strongly decreased from shaded to open habitats, as light incidence increased in the tanks. The density of detritus in the tanks had no impact on the importance of allochthonous sources to aquatic invertebrates. This overall pattern held for all invertebrates, irrespective of the taxonomic or functional group to which they belonged. We concluded that, over a broad geographic range, aquatic food webs of tank bromeliads are mostly allochthonous-based, but the relative importance of allochthonous subsidies decreases when light incidence favors autochthonous primary production. These results suggest that, for other freshwater systems, some of the between-study variation in the importance of allochthonous subsidies may similarly be driven by the relative availability of autochthonous resources.
dc.description97
dc.description8
dc.description2147
dc.description2156
dc.descriptionUniversity of British Columbia
dc.descriptionNSERC E.W.R. Steacie Memorial Fellowship
dc.descriptionBrazilian Council for Research, Development and Innovation (CNPq)
dc.descriptionSao Paulo Research Foundation (FAPESP)
dc.descriptionCNPq
dc.descriptionFrench National Center for Scientific Research (CNRS)
dc.descriptionFond Social Europeen (FSE)
dc.descriptionNational Science Foundation [DEB-0620910]
dc.descriptionInternational Institute of Tropical Forestry as part of the Luquillo Long-Term Ecological Research programme in the Luquillo Experimental Forest
dc.descriptionUSDA IITF [01-1G11120101-001]
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherWiley-Blackwell
dc.publisherHoboken
dc.relationEcology
dc.rightsaberto
dc.sourceWOS
dc.subjectAllochthonous Carbon
dc.subjectAllochthony
dc.subjectAquatic Food Webs
dc.subjectAutochthonous Carbon
dc.subjectAutochthony
dc.subjectNatural Microcosms
dc.subjectStable Isotopic Analysis
dc.subjectTank Bromeliads
dc.subjectTropics
dc.titleTerrestrial Support Of Aquatic Food Webs Depends On Light Inputs: A Geographically-replicated Test Using Tank Bromeliads
dc.typeArtículos de revistas


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