Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences
We found considerable seasonal, latitudinal, and taxonomic differences in zooplankton lipid content and concurrent δ 13 C values of zooplankton. We collected cladoceran as well as cyclopoid and calanoid copepod zooplankton from boreal and subarctic lakes throughout a year, allowing us to study zoopl...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f10-091 2024-06-23T07:57:01+00:00 Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences Syväranta, Jari Rautio, Milla 2010 http://dx.doi.org/10.1139/f10-091 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-091 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-091 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 11, page 1721-1729 ISSN 0706-652X 1205-7533 journal-article 2010 crcansciencepubl https://doi.org/10.1139/f10-091 2024-06-06T04:11:15Z We found considerable seasonal, latitudinal, and taxonomic differences in zooplankton lipid content and concurrent δ 13 C values of zooplankton. We collected cladoceran as well as cyclopoid and calanoid copepod zooplankton from boreal and subarctic lakes throughout a year, allowing us to study zooplankton likely subjected to different isotopic fractionation processes and with highly variable lipid contents. Considerable seasonal variation was observed in the difference between bulk and lipid-extracted zooplankton δ 13 C values, indicating that seasonally changing lipid content introduced notable variation in zooplankton δ 13 C values. The difference between bulk and lipid-extracted material was most amplified in lipid-rich subarctic zooplankton in winter, δ 13 C difference being >5 units. Significant differences were also observed among zooplankton taxa, with copepods showing a greater lipid impact on δ 13 C than cladocerans. Published lipid correction models failed to produce satisfying fits to our data, and considerable variation was left even after recalibrating the model parameters. This was likely due to taxonomic differences in lipid effects on δ 13 C values. We therefore produced separate mass balance-based lipid correction models for cladocerans and also cyclopoid and calanoid copepods. We conclude that arithmetic lipid correction models perform well with zooplankton samples, but taxonomic differences need to be considered. Article in Journal/Newspaper Subarctic Copepods Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 67 11 1721 1729 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
We found considerable seasonal, latitudinal, and taxonomic differences in zooplankton lipid content and concurrent δ 13 C values of zooplankton. We collected cladoceran as well as cyclopoid and calanoid copepod zooplankton from boreal and subarctic lakes throughout a year, allowing us to study zooplankton likely subjected to different isotopic fractionation processes and with highly variable lipid contents. Considerable seasonal variation was observed in the difference between bulk and lipid-extracted zooplankton δ 13 C values, indicating that seasonally changing lipid content introduced notable variation in zooplankton δ 13 C values. The difference between bulk and lipid-extracted material was most amplified in lipid-rich subarctic zooplankton in winter, δ 13 C difference being >5 units. Significant differences were also observed among zooplankton taxa, with copepods showing a greater lipid impact on δ 13 C than cladocerans. Published lipid correction models failed to produce satisfying fits to our data, and considerable variation was left even after recalibrating the model parameters. This was likely due to taxonomic differences in lipid effects on δ 13 C values. We therefore produced separate mass balance-based lipid correction models for cladocerans and also cyclopoid and calanoid copepods. We conclude that arithmetic lipid correction models perform well with zooplankton samples, but taxonomic differences need to be considered. |
format |
Article in Journal/Newspaper |
author |
Syväranta, Jari Rautio, Milla |
spellingShingle |
Syväranta, Jari Rautio, Milla Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
author_facet |
Syväranta, Jari Rautio, Milla |
author_sort |
Syväranta, Jari |
title |
Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
title_short |
Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
title_full |
Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
title_fullStr |
Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
title_full_unstemmed |
Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
title_sort |
zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f10-091 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-091 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-091 |
genre |
Subarctic Copepods |
genre_facet |
Subarctic Copepods |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 11, page 1721-1729 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f10-091 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
11 |
container_start_page |
1721 |
op_container_end_page |
1729 |
_version_ |
1802650456392990720 |