Changes in food characteristics reveal indirect effects of lake browning on zooplankton performance

dc.contributor.authorMinguez, Laetitia
dc.contributor.authorSperfeld, Erik
dc.contributor.authorBerger, Stella A.
dc.contributor.authorNejstgaard, Jens C.
dc.contributor.authorGessner, Mark O.
dc.date.accessioned2020-10-30T13:48:30Z
dc.date.available2020-10-30T13:48:30Z
dc.date.issued2019-11-12
dc.date.updated2020-10-05T18:58:48Z
dc.description.abstractBrowning caused by colored dissolved organic matter is predicted to have large effects on aquatic ecosystems. However, there is limited experimental evidence about direct and indirect effects of browning on zooplankton in complex field settings. We used a combination of an ecosystem‐scale enclosure experiment and laboratory incubations to test how prolonged browning affects physiological and life‐history traits of the water flea Daphnia longispina, a key species in lake food webs, and whether any such effects are reversible. Daphnids and water were collected from enclosures in a deep clear‐water lake, where the natural plankton community had been exposed for 10 weeks to browning or to control conditions in clear water. Daphnid abundance was much lower in the brown than in the clear enclosure. Surprisingly, however, daphnids continuously kept in brown enclosure water in the laboratory showed increased metabolic performance and survival, and also produced more offspring than daphnids kept in clear enclosure water. This outcome was related to more and higher‐quality seston in brown compared to clear water. Moreover, daphnids transferred from clear to brown water or vice versa adjusted their nucleic acid and protein contents, as indicators of physiological state, to similar levels as individuals previously exposed to the respective recipient environment, indicating immediate and reversible browning effects on metabolic performance. These results demonstrate the importance of conducting experiments in settings that capture both indirect effects (i.e., emerging from species interactions in communities) and direct effects on individuals for assessing impacts of browning and other environmental changes on lakes.en
dc.description.sponsorshipBMBF, 033L041B, Verbundprojekt: NITROLIMIT - Stickstofflimitation in Binnengewässern - ist Stickstoffreduktion ökologisch sinnvoll und wirtschaftlich vertretbar? Teilprojekt: Verfügbarkeit von gelösten organischen N-Verbindungen, Produktion von Lachgas und Stickstoffeinträgeen
dc.description.sponsorshipEC/FP7/603378/EU/Managing Aquatic ecosystems and water Resources under multiple Stress/MARSen
dc.identifier.eissn1939-5590
dc.identifier.issn0024-3590
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/11816
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-10706
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/en
dc.subject.ddc577 Ökologiede
dc.subject.otheraquatic ecosystemsen
dc.subject.otherbrowningen
dc.subject.otherzooplanktonen
dc.titleChanges in food characteristics reveal indirect effects of lake browning on zooplankton performanceen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1002/lno.11367en
dcterms.bibliographicCitation.issue5en
dcterms.bibliographicCitation.journaltitleLimnology and Oceanographyen
dcterms.bibliographicCitation.originalpublishernameWileyen
dcterms.bibliographicCitation.originalpublisherplaceHoboken, USAen
dcterms.bibliographicCitation.pageend1040en
dcterms.bibliographicCitation.pagestart1028en
dcterms.bibliographicCitation.volume65en
tub.accessrights.dnbfreeen
tub.affiliationFak. 6 Planen Bauen Umwelt::Inst. Ökologie::FG Angewandte Gewässerökologiede
tub.affiliation.facultyFak. 6 Planen Bauen Umweltde
tub.affiliation.groupFG Angewandte Gewässerökologiede
tub.affiliation.instituteInst. Ökologiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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