Belle, Simon
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Research article2019Peer reviewedOpen access
Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake
Belle, Simon; Nilsson, Jenny L.; Tonno, Ilmar; Freiberg, Rene; Vrede, Tobias; Goedkoop, Willem
Abstract
Reconstructions of past food web dynamics are necessary for better understanding long-term impacts of climate change on subarctic lakes. We studied elemental and stable isotopic composition of sedimentary organic matter, photosynthetic pigments and carbon stable isotopic composition of Daphnia (Cladocera; Crustacea) resting eggs (delta C-13(Clado)) in a sediment record from a small subarctic lake. We examined how regional climate and landscape changes over the last 5800 years affected the relative importance of allochthonous and autochthonous carbon transfer to zooplankton. Overall, delta C-13(Clado) values were well in line with the range of theoretical values of aquatic primary producers, confirming that zooplankton consumers in subarctic lakes, even in the long-term perspective, are mainly fuelled by autochthonous primary production. Results also revealed greater incorporations of benthic algae into zooplankton biomass in periods that had a warmer and drier climate and clearer water, whereas a colder and wetter climate and lower water transparency induced higher contributions of planktonic algae to Daphnia biomass. This study thus emphasizes long-term influence of terrestrial-aquatic linkages and in-lake processes on the functioning of subarctic lake food webs.
Published in
Scientific Reports
2019, volume: 9, article number: 17087
Publisher: NATURE PUBLISHING GROUP
SLU Authors
Nilsson, Jenny
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Vrede, Tobias
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Goedkoop, Willem
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Global goals (SDG)
UKÄ Subject classification
Oceanography, Hydrology, Water Resources
Publication identifier
- DOI: https://doi.org/10.1038/s41598-019-53541-3
Permanent link to this page (URI)
https://res.slu.se/id/publ/102928