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dc.contributor.authorJones Roger I.
dc.contributor.authorKankaala Paula
dc.contributor.authorNykänen Hannu
dc.contributor.authorPeura Sari
dc.contributor.authorRask Martti
dc.contributor.authorVesala Sami
dc.date.accessioned2017-08-17T11:13:10Z
dc.date.available2017-08-17T11:13:10Z
dc.date.issued2017
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/4041
dc.description.abstractTerrestrial dissolved organic carbon (DOC) provides an external carbon source to lake ecosystems. However, there is ongoing debate about whether external DOC that enters a lake can pass up the food web to support top consumers. We show, from experimental manipulation of a whole lake, that externally loaded DOC can contribute appreciably to fish biomass. Monthly additions of cane sugar with a distinct carbon stable isotope value during 2 years rapidly enriched the 13C content of zooplankton and macroinvertebrates, with a more gradual 13C enrichment of fish. After sugar addition stopped, the 13C content of consumers reverted towards original values. A simple isotope mixing model indicated that by the end of the sugar addition almost 20% of fish carbon in the lake was derived from the added sugar. Our results provide the first direct experimental demonstration at relevant ecological spatial and temporal scales that externally loaded DOC to lakes can indeed transfer to top consumers.
dc.language.isoEN
dc.relation.ispartofseriesECOSYSTEMS (N.Y.)
dc.rightsAll rights reserved
dc.subjectlakes
dc.subjectfish
dc.subjectmacroinvertebrates
dc.subjectzooplankton
dc.subjectfood webs
dc.subjectallochthony
dc.subjectcane sugar
dc.subjectstable isotopes
dc.titleWhole-Lake Sugar Addition Demonstrates Trophic Transfer of Dissolved Organic Carbon to Top Consumers
dc.description.versionfinal draft
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toiminta
uef.solecris.id48805544
dc.type.publicationinfo:eu-repo/semantics/article
dc.rights.accessrights© Springer Science+Business Media
dc.relation.doi10.1007/s10021-017-0164-6
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1-12
dc.relation.issn1432-9840
dc.relation.volume[Epub Jun 21 2017]
dc.rights.accesslevelopenAccess
dc.type.okmA1
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
uef.solecris.openaccessEi


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