Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation
Abstract Copepods are important secondary producers that support higher trophic levels in aquatic food webs. Large‐scale climate events such as climate oscillations and global warming force on physical and chemical conditions in aquatic ecosystems might regulate copepod production through physiologi...
Published in: | Limnology and Oceanography |
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crwiley:10.1002/lno.11918 2024-09-15T18:08:06+00:00 Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation Liu, Xin Dur, Gaël Ban, Syuhei Sakai, Yoichiro Ohmae, Shinsuke Morita, Takashi Japan Society for the Promotion of Science Japan Student Services Organization Ministry of Agriculture, Forestry and Fisheries 2021 http://dx.doi.org/10.1002/lno.11918 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11918 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11918 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11918 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Limnology and Oceanography volume 66, issue 10, page 3783-3795 ISSN 0024-3590 1939-5590 journal-article 2021 crwiley https://doi.org/10.1002/lno.11918 2024-07-11T04:39:03Z Abstract Copepods are important secondary producers that support higher trophic levels in aquatic food webs. Large‐scale climate events such as climate oscillations and global warming force on physical and chemical conditions in aquatic ecosystems might regulate copepod production through physiological and biochemical processes. We evaluated how large climatic and anthropogenic events impacted secondary production of copepods in Lake Biwa, the largest lake in Japan. We determined demographic traits such as body size, growth rate, biomass and production of the dominant copepod Eodiaptomus japonicus in this lake over four decades (1971–2010). To evaluate in situ food conditions and estimate growth and production for this omnivorous species, we firstly defined a size‐based food index ( f ), that is the ratio of in situ body size to ideal body size in adult females. Values of f were mostly < 1 even during eutrophication (1970s to the early 1980s), suggesting that this copepod continuously suffered from a food shortage in this lake. Quasi‐decadal periodicities were detected in f , growth and production (but not biomass) for this copepod throughout the study period. These periodicities were correlated with the Arctic Oscillation, implying that long‐term trends in climate could regulate copepod food availability and production. This correlation weakened after 1990, which might be due to a regime shift in lake water temperature, which increased abruptly in the mid‐1980s. Global warming might now be disrupting historical quasi‐decadal periodicity in growth and production of copepods in Lake Biwa. Article in Journal/Newspaper Global warming Copepods Wiley Online Library Limnology and Oceanography 66 10 3783 3795 |
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Wiley Online Library |
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English |
description |
Abstract Copepods are important secondary producers that support higher trophic levels in aquatic food webs. Large‐scale climate events such as climate oscillations and global warming force on physical and chemical conditions in aquatic ecosystems might regulate copepod production through physiological and biochemical processes. We evaluated how large climatic and anthropogenic events impacted secondary production of copepods in Lake Biwa, the largest lake in Japan. We determined demographic traits such as body size, growth rate, biomass and production of the dominant copepod Eodiaptomus japonicus in this lake over four decades (1971–2010). To evaluate in situ food conditions and estimate growth and production for this omnivorous species, we firstly defined a size‐based food index ( f ), that is the ratio of in situ body size to ideal body size in adult females. Values of f were mostly < 1 even during eutrophication (1970s to the early 1980s), suggesting that this copepod continuously suffered from a food shortage in this lake. Quasi‐decadal periodicities were detected in f , growth and production (but not biomass) for this copepod throughout the study period. These periodicities were correlated with the Arctic Oscillation, implying that long‐term trends in climate could regulate copepod food availability and production. This correlation weakened after 1990, which might be due to a regime shift in lake water temperature, which increased abruptly in the mid‐1980s. Global warming might now be disrupting historical quasi‐decadal periodicity in growth and production of copepods in Lake Biwa. |
author2 |
Japan Society for the Promotion of Science Japan Student Services Organization Ministry of Agriculture, Forestry and Fisheries |
format |
Article in Journal/Newspaper |
author |
Liu, Xin Dur, Gaël Ban, Syuhei Sakai, Yoichiro Ohmae, Shinsuke Morita, Takashi |
spellingShingle |
Liu, Xin Dur, Gaël Ban, Syuhei Sakai, Yoichiro Ohmae, Shinsuke Morita, Takashi Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation |
author_facet |
Liu, Xin Dur, Gaël Ban, Syuhei Sakai, Yoichiro Ohmae, Shinsuke Morita, Takashi |
author_sort |
Liu, Xin |
title |
Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation |
title_short |
Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation |
title_full |
Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation |
title_fullStr |
Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation |
title_full_unstemmed |
Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation |
title_sort |
quasi‐decadal periodicities in growth and production of the copepod eodiaptomus japonicus in lake biwa, japan, related to the arctic oscillation |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/lno.11918 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11918 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11918 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11918 |
genre |
Global warming Copepods |
genre_facet |
Global warming Copepods |
op_source |
Limnology and Oceanography volume 66, issue 10, page 3783-3795 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/lno.11918 |
container_title |
Limnology and Oceanography |
container_volume |
66 |
container_issue |
10 |
container_start_page |
3783 |
op_container_end_page |
3795 |
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1810445455423700992 |