Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes
Factors affecting long-term (1982–2000) population densities of the glacial relict amphipod Monoporeia affinis were studied in Sweden's three largest lakes. Monoporeia showed large population fluctuations in all three lakes, with conspicuous peaks in density occurring in Lakes Vänern and Mälare...
Published in: | AMBIO: A Journal of the Human Environment |
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Royal Swedish Academy of Sciences
2001
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ftbioone:10.1579/0044-7447-30.8.552 2023-07-30T04:05:26+02:00 Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes Willem Goedkoop Richard K. Johnson Willem Goedkoop Richard K. Johnson world 2001-12-01 text/HTML https://doi.org/10.1579/0044-7447-30.8.552 en eng Royal Swedish Academy of Sciences doi:10.1579/0044-7447-30.8.552 All rights reserved. https://doi.org/10.1579/0044-7447-30.8.552 Text 2001 ftbioone https://doi.org/10.1579/0044-7447-30.8.552 2023-07-09T09:34:43Z Factors affecting long-term (1982–2000) population densities of the glacial relict amphipod Monoporeia affinis were studied in Sweden's three largest lakes. Monoporeia showed large population fluctuations in all three lakes, with conspicuous peaks in density occurring in Lakes Vänern and Mälaren. In Lake Vänern, amphipod densities showed highly significant relationships with spring maximum diatom biovolume at a 1-yr lag. The lack of relationship between diatom biovolumes and Monoporeia densities in L. Vättern is likely due to the larger depth and the lower nutrient content of this lake. In eutrophic L. Mälaren, summer hypoxia (< 4 mg O2 L−1) is likely an important regulating factor. Hypolimnetic temperature showed a clear periodicity with relatively warm deep water occurring between 1989 and 1994. Hypolimnetic temperatures in Vänern and Vättern were correlated with total solar irradiance. However, neither hypolimnetic water temperature nor diatom biovolumes correlated with the North Atlantic Oscillation winter index. We speculate that variations in temperature and nearbottom oxygen concentrations negatively affect population densities by acting on recruitment success (reproduction) and juvenile (young-of-the-year) survival. Text North Atlantic North Atlantic oscillation BioOne Online Journals AMBIO: A Journal of the Human Environment 30 8 552 558 |
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English |
description |
Factors affecting long-term (1982–2000) population densities of the glacial relict amphipod Monoporeia affinis were studied in Sweden's three largest lakes. Monoporeia showed large population fluctuations in all three lakes, with conspicuous peaks in density occurring in Lakes Vänern and Mälaren. In Lake Vänern, amphipod densities showed highly significant relationships with spring maximum diatom biovolume at a 1-yr lag. The lack of relationship between diatom biovolumes and Monoporeia densities in L. Vättern is likely due to the larger depth and the lower nutrient content of this lake. In eutrophic L. Mälaren, summer hypoxia (< 4 mg O2 L−1) is likely an important regulating factor. Hypolimnetic temperature showed a clear periodicity with relatively warm deep water occurring between 1989 and 1994. Hypolimnetic temperatures in Vänern and Vättern were correlated with total solar irradiance. However, neither hypolimnetic water temperature nor diatom biovolumes correlated with the North Atlantic Oscillation winter index. We speculate that variations in temperature and nearbottom oxygen concentrations negatively affect population densities by acting on recruitment success (reproduction) and juvenile (young-of-the-year) survival. |
author2 |
Willem Goedkoop Richard K. Johnson |
format |
Text |
author |
Willem Goedkoop Richard K. Johnson |
spellingShingle |
Willem Goedkoop Richard K. Johnson Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes |
author_facet |
Willem Goedkoop Richard K. Johnson |
author_sort |
Willem Goedkoop |
title |
Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes |
title_short |
Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes |
title_full |
Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes |
title_fullStr |
Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes |
title_full_unstemmed |
Factors Affecting Population Fluctuations of the Glacial Relict Amphipod Monoporeia affinis (Lindström) in Sweden's Largest Lakes |
title_sort |
factors affecting population fluctuations of the glacial relict amphipod monoporeia affinis (lindström) in sweden's largest lakes |
publisher |
Royal Swedish Academy of Sciences |
publishDate |
2001 |
url |
https://doi.org/10.1579/0044-7447-30.8.552 |
op_coverage |
world |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
https://doi.org/10.1579/0044-7447-30.8.552 |
op_relation |
doi:10.1579/0044-7447-30.8.552 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1579/0044-7447-30.8.552 |
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AMBIO: A Journal of the Human Environment |
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30 |
container_issue |
8 |
container_start_page |
552 |
op_container_end_page |
558 |
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1772817338777731072 |