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dc.contributor.authorSchilder, Johannes
dc.contributor.authorvan Roij, Linda
dc.contributor.authorReichart, Gert-Jan
dc.contributor.authorSluijs, Appy
dc.contributor.authorHeiri, Oliver
dc.date.accessioned2019-01-14T10:14:29Z
dc.date.available2020-06-01T21:35:08Z
dc.date.issued2018
dc.identifier.citationSchilder, J., van Roij, L., Reichart, G.-J., Sluijs, A., & Heiri, O. (2018). Variability in δ13C values between individual Daphnia ephippia : Implications for palaeo-studies. <i>Quaternary Science Reviews</i>, <i>189</i>, 127-133. <a href="https://doi.org/10.1016/j.quascirev.2018.04.007" target="_blank">https://doi.org/10.1016/j.quascirev.2018.04.007</a>
dc.identifier.otherCONVID_28024543
dc.identifier.otherTUTKAID_77489
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/62452
dc.description.abstractThe stable carbon isotope ratio (δ13C value) of Daphnia spp. resting egg shells (ephippia) provides information on past changes in Daphnia diet. Measurements are typically performed on samples of ≥20 ephippia, which obscures the range of values associated with individual ephippia. Using a recently developed laser ablation-based technique, we perform multiple δ13C analyses on individual ephippia, which show a high degree of reproducibility (standard deviations 0.1–0.5‰). We further measured δ13C values of 13 ephippia from surface sediments of three Swiss lakes. In the well-oxygenated lake with low methane concentrations, δ13C values are close to values typical for algae (−31.4‰) and the range in values is relatively small (5.8‰). This variability is likely driven by seasonal (or inter-annual) variability in algae δ13C values. In two seasonally anoxic lakes with higher methane concentrations, average values were lower (−41.4 and −43.9‰, respectively) and the ranges much larger (10.7 and 20.0‰). We attribute this variability to seasonal variation in incorporation of methane-derived carbon. In one lake we identify two statistically distinct isotopic populations, which may reflect separate production peaks. The potentially large within-sample variability should be considered when interpreting small-amplitude, short-lived isotope excursions based on samples consisting of few ephippia. We show that measurements on single ephippia can be performed using laser ablation, which allows for refined assessments of past Daphnia diet and carbon cycling in lake food webs. Furthermore, our study provides a basis for similar measurements on other chitinous remains (e.g. from chironomids, bryozoans).fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherPergamon Press
dc.relation.ispartofseriesQuaternary Science Reviews
dc.rightsCC BY-NC-ND 4.0
dc.subject.otherDaphnia ephippia
dc.subject.otherstable carbon isotopes
dc.subject.otherlaser ablation
dc.subject.otherseasonality
dc.subject.otherpresent
dc.subject.otherEurope
dc.subject.otherstable isotopes
dc.titleVariability in δ13C values between individual Daphnia ephippia : Implications for palaeo-studies
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201901091130
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.contributor.oppiaineAquatic Sciencesen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-01-09T10:15:09Z
dc.description.reviewstatuspeerReviewed
dc.format.pagerange127-133
dc.relation.issn0277-3791
dc.relation.numberinseries0
dc.relation.volume189
dc.type.versionacceptedVersion
dc.rights.copyright© 2018 Elsevier Ltd.
dc.rights.accesslevelopenAccessfi
dc.subject.ysovesikirput
dc.subject.ysohiili
dc.subject.ysoisotoopit
dc.subject.ysokausivaihtelut
dc.subject.ysopaleolimnologia
dc.subject.ysojärvet
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p14681
jyx.subject.urihttp://www.yso.fi/onto/yso/p138
jyx.subject.urihttp://www.yso.fi/onto/yso/p6387
jyx.subject.urihttp://www.yso.fi/onto/yso/p18726
jyx.subject.urihttp://www.yso.fi/onto/yso/p13293
jyx.subject.urihttp://www.yso.fi/onto/yso/p9374
dc.rights.urlhttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.1016/j.quascirev.2018.04.007


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