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Spatiotemporal carbon, nitrogen and phosphorus stoichiometry in planktonic food web in a northern coastal area
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. (EcoChange)ORCID iD: 0000-0003-3724-4810
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Umeå University, Faculty of Science and Technology, Umeå Marine Sciences Centre (UMF). (EcoChange; UMFpub)ORCID iD: 0000-0002-1298-3839
Umeå University, Faculty of Science and Technology, Umeå Marine Sciences Centre (UMF). Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. (EcoChange; UMFpub)ORCID iD: 0000-0001-7819-9038
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.ORCID iD: 0000-0002-3246-7508
2022 (English)In: Estuarine, Coastal and Shelf Science, ISSN 0272-7714, E-ISSN 1096-0015, Vol. 272, article id 107903Article in journal (Refereed) Published
Abstract [en]

The concentrations of ambient nutrients and dissolved organic carbon (DOC) in northern coastal ecosystems often show large variations, due to the spatiotemporal differences in terrestrial inputs. How these variations affect the stoichiometry of coastal planktonic organisms is, however, poorly known. Here we assessed the spatiotemporal variability of C, nitrogen (N), and phosphorous (P) concentrations of the seawater on the elemental stoichiometry of seston and dominant mesozooplankton taxa in a coastal area of the northern Baltic Sea. The freshwater inflow peaked in spring following the snowmelt and brought a significant amount of DOC, but not N and P to the coastal system. DOC was the main environmental descriptor for seston C:N stoichiometry. The C:N ratio of seston from 0.7 to 50 μm and mesozooplankton followed the temporal pattern of water C:N ratio, while the temporal trend of bacteria C:N showed an opposite pattern. Our results also indicated that the C:N ratio of seawater controlled both seston and mesozooplankton C:N ratios. Our findings imply that inflows of terrestrial DOC alter the stoichiometry and reduce the nutritional quality of planktonic food webs in northern coastal ecosystems.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 272, article id 107903
Keywords [en]
Dissolved organic carbon, Bacteria, Seston, Zooplankton, Ecological stoichiometry, Baltic sea
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:umu:diva-195047DOI: 10.1016/j.ecss.2022.107903ISI: 000807368600005Scopus ID: 2-s2.0-85133928708OAI: oai:DiVA.org:umu-195047DiVA, id: diva2:1659799
Funder
Ecosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGESwedish Research Council Formas, 2019/0007Available from: 2022-05-21 Created: 2022-05-21 Last updated: 2022-07-22Bibliographically approved

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Guo, JunwenBrugel, SoniaAndersson, AgnetaLau, Danny C. P.

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Estuarine, Coastal and Shelf Science
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