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Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake
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 (Clad...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6863840/ https://www.ncbi.nlm.nih.gov/pubmed/31745149 http://dx.doi.org/10.1038/s41598-019-53541-3 |
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author | Belle, Simon Nilsson, Jenny L. Tõnno, Ilmar Freiberg, Rene Vrede, Tobias Goedkoop, Willem |
author_facet | Belle, Simon Nilsson, Jenny L. Tõnno, Ilmar Freiberg, Rene Vrede, Tobias Goedkoop, Willem |
author_sort | Belle, Simon |
collection | PubMed |
description | 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 (δ(13)C(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, δ(13)C(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. |
format | Online Article Text |
id | pubmed-6863840 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-68638402019-11-20 Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake Belle, Simon Nilsson, Jenny L. Tõnno, Ilmar Freiberg, Rene Vrede, Tobias Goedkoop, Willem Sci Rep Article 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 (δ(13)C(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, δ(13)C(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. Nature Publishing Group UK 2019-11-19 /pmc/articles/PMC6863840/ /pubmed/31745149 http://dx.doi.org/10.1038/s41598-019-53541-3 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Belle, Simon Nilsson, Jenny L. Tõnno, Ilmar Freiberg, Rene Vrede, Tobias Goedkoop, Willem Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
title | Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
title_full | Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
title_fullStr | Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
title_full_unstemmed | Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
title_short | Climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
title_sort | climate-induced changes in carbon flows across the plant-consumer interface in a small subarctic lake |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6863840/ https://www.ncbi.nlm.nih.gov/pubmed/31745149 http://dx.doi.org/10.1038/s41598-019-53541-3 |
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