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dc.contributor.authorBergström, A.-K.
dc.contributor.authorDeininger, A.
dc.contributor.authorJonsson, A.
dc.contributor.authorKarlsson, J.
dc.contributor.authorVrede, T.
dc.date.accessioned2021-09-22T09:00:38Z
dc.date.available2021-09-22T09:00:38Z
dc.date.created2021-09-15T13:48:03Z
dc.date.issued2021
dc.identifier.citationHydrobiologia. 2021.en_US
dc.identifier.issn0018-8158
dc.identifier.urihttps://hdl.handle.net/11250/2780266
dc.description.abstractWe used data from whole-lake studies to assess how changes in food quantity (phytoplankton biomass) and quality (phytoplankton community composition, seston C:P and N:P) with N fertilization affect zooplankton biomass, community composition and C:N:P stoichiometry, and their N:P recycling ratio along a gradient in lake DOC concentrations. We found that despite major differences in phytoplankton biomass with DOC (unimodal distributions, especially with N fertilization), no major differences in zooplankton biomass were detectable. Instead, phytoplankton to zooplankton biomass ratios were high, especially at intermediate DOC and after N fertilization, implying low trophic transfer efficiencies. An explanation for the observed low phytoplankton resource use, and biomass responses in zooplankton, was dominance of colony forming chlorophytes of reduced edibility at intermediate lake DOC, combined with reduced phytoplankton mineral quality (enhanced seston N:P) with N fertilization. N fertilization, however, increased zooplankton N:P recycling ratios, with largest impact at low DOC where phytoplankton benefitted from light sufficiently to cause enhanced seston N:P. Our results suggest that although N enrichment and increased phytoplankton biomass do not necessarily increase zooplankton biomass, bottom-up effects may still impact zooplankton and their N:P recycling ratio through promotion of phytoplankton species of low edibility and altered mineral quality.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleEffects of nitrogen enrichment on zooplankton biomass and N:P recycling ratios across a DOC gradient in northern-latitude lakesen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holderThe Author(s) 2021en_US
dc.source.pagenumber20en_US
dc.source.journalHydrobiologiaen_US
dc.identifier.doi10.1007/s10750-021-04689-5
dc.identifier.cristin1934573
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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