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dc.contributor.authorTaipale S
dc.contributor.authorVuorio K
dc.contributor.authorBrett MT
dc.contributor.authorPeltomaa E
dc.contributor.authorHiltunen M
dc.contributor.authorKankaala P
dc.contributor.editor
dc.date.accessioned2016-10-17T08:10:28Z
dc.date.available2016-10-17T08:10:28Z
dc.date.issued2016
dc.identifier10.1002/ecs2.1392fi_FI
dc.identifier.citationTaipale, S. J., K. Vuorio, M. T. Brett, E. Peltomaa, M. Hiltunen, and P. Kankaala. 2016. Lake zooplankton δ13C values are strongly correlated with the δ13C values of distinct phytoplankton taxa. Ecosphere 7(8): e01392. 10.1002/ecs2.1392fi_FI
dc.identifier.issn2150-8925
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/163
dc.descriptionArticle
dc.description.abstractAnalyses of carbon stable isotopes are often used to estimate the contributions of allochthonous and autochthonous dietary resources to aquatic consumers. Most pelagic food web studies assume that all phytoplankton taxa have a similar δ13C value. We studied pelagic food web compartments (dissolved inorganic carbon [DIC], phytoplankton, bacteria, seston, cladoceran zooplankton) in 12 small (< 0.1 km2) lakes in southern Finland. These lakes were classified as oligotrophic, mesotrophic, eutrophic, and dystrophic based on their concentrations of total phosphorus and dissolved organic carbon. Additionally, we studied phytoplankton photosynthetic carbon fractionation (εp) in laboratory conditions. The photosynthetic fractionation in 28 phytoplankton cultures from nine different phytoplankton classes varied significantly at the class level, and fractionation correlated significantly with the DIC concentration of the growth media. In small boreal lakes, the δ13C values of different phytoplankton taxa, as directly measured or estimated from the δ13C values of biomarker fatty acids, varied greatly (−18‰ to −44.5‰). Phytoplankton δ13C values varied significantly by lake type and were most depleted in dystrophic lakes even though the δ13C values of the DIC was similar to mesotrophic lakes. Further within-taxa variation was found between lakes and between different depths within a lake. Vertical samples from dystrophic lakes also showed lower εp in the phytoplankton from meta- and hypolimnion, possibly as a result of reduced light intensity. Altogether, in nine of the 10 sampled lakes, the δ13C values of cladoceran zooplankton were between the minimum and the maximum phytoplankton δ13C value of each lake, and thus, phytoplankton alone could explain zooplankton δ13C values. We conclude that stable isotope mixing models should take into account carbon variation among different phytoplankton taxa.
dc.language.isoEN
dc.publisherEcological Society of America
dc.relation.ispartofseriesEcosphere
dc.relation.urihttp://dx.doi.org/10.1002/ecs2.1392
dc.rightsCC BY http://creativecommons.org/licenses/by/4.0/
dc.subjectboreal lakes
dc.subjectcarbon stable isotopes
dc.subjectphotosynthetic fractionation
dc.subjectphytoplankton
dc.subjectSpecial Feature
dc.subjectBiomarkers in Trophic Ecology
dc.subjectzooplankton
dc.titleLake zooplankton delta13C values are strongly correlated with the delta13C values of distinct phytoplankton taxa
dc.typehttp://purl.org/eprint/type/JournalArticle
dc.description.versionpublished version
dc.contributor.departmentBiologian laitos / Biologian laitoksen toiminta
uef.solecris.id42070934en
eprint.statushttp://purl.org/eprint/status/PeerReviewedfi_FI
dc.type.publicationinfo:eu-repo/semantics/article
dc.rights.accessrights© Authors
dc.relation.doi10.1002/ecs2.1392
dc.description.reviewstatuspeerReviewed
dc.publisher.countryYhdysvallat (USA)
dc.relation.articlenumbere01392
dc.relation.issn2150-8925
dc.relation.issue8
dc.relation.volume7
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessOpen access -julkaisukanavassa ilmestynyt julkaisu


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