Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan
We explored the effects of regime shifts (drastic changes usually observed in marine ecosystems, corresponding to climatic variability) in a terrestrial system focusing on a key event that occurred in 1976-77. We used data on the gray-sided vote Clethrionomys rufocanus (Sundevall, 1846) from 89 time...
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ftird:oai:ird.fr:fdi:010037783 2024-09-15T17:36:27+00:00 Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan Saitoh, T. /Cazelles, Bernard Vik, J. O. Viljugrein, H. Stenseth, N. C. 2006 https://www.documentation.ird.fr/hor/fdi:010037783 EN eng https://www.documentation.ird.fr/hor/fdi:010037783 oai:ird.fr:fdi:010037783 Saitoh T., Cazelles Bernard, Vik J. O., Viljugrein H., Stenseth N. C. Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan. 2006, 32 (2), p. 109-118 Aleutian Low Pressure Clethrionomys rufocanus cycle density dependence Hokkaido text 2006 ftird 2024-08-15T05:57:43Z We explored the effects of regime shifts (drastic changes usually observed in marine ecosystems, corresponding to climatic variability) in a terrestrial system focusing on a key event that occurred in 1976-77. We used data on the gray-sided vote Clethrionomys rufocanus (Sundevall, 1846) from 89 time series covering 31 yr (1962-1992), recorded in Asahikawa, Hokkaido, Japan, where both cyclic and non-cyclic populations occur. Wavelet analyses demonstrated a clear shift of dynamic patterns in the mid-1970s, presumably resulting from the Aleutian Low Pressure (as measured by the Aleutian Low Pressure Index). The vole populations exhibited erratic fluctuations until the mid-1970s, and then changed their pattern to cyclic fluctuations at a 4 yr interval. The structure of density dependence changed during the regime shift. Although the strength of direct density dependence was similar, delayed density dependence became stronger after the shift, Altogether these findings suggest that changing climate may affect the ecological interactions among voles, predators and resources. Text aleutian low IRD (Institute de recherche pour le développement): Horizon |
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Open Polar |
collection |
IRD (Institute de recherche pour le développement): Horizon |
op_collection_id |
ftird |
language |
English |
topic |
Aleutian Low Pressure Clethrionomys rufocanus cycle density dependence Hokkaido |
spellingShingle |
Aleutian Low Pressure Clethrionomys rufocanus cycle density dependence Hokkaido Saitoh, T. /Cazelles, Bernard Vik, J. O. Viljugrein, H. Stenseth, N. C. Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan |
topic_facet |
Aleutian Low Pressure Clethrionomys rufocanus cycle density dependence Hokkaido |
description |
We explored the effects of regime shifts (drastic changes usually observed in marine ecosystems, corresponding to climatic variability) in a terrestrial system focusing on a key event that occurred in 1976-77. We used data on the gray-sided vote Clethrionomys rufocanus (Sundevall, 1846) from 89 time series covering 31 yr (1962-1992), recorded in Asahikawa, Hokkaido, Japan, where both cyclic and non-cyclic populations occur. Wavelet analyses demonstrated a clear shift of dynamic patterns in the mid-1970s, presumably resulting from the Aleutian Low Pressure (as measured by the Aleutian Low Pressure Index). The vole populations exhibited erratic fluctuations until the mid-1970s, and then changed their pattern to cyclic fluctuations at a 4 yr interval. The structure of density dependence changed during the regime shift. Although the strength of direct density dependence was similar, delayed density dependence became stronger after the shift, Altogether these findings suggest that changing climate may affect the ecological interactions among voles, predators and resources. |
format |
Text |
author |
Saitoh, T. /Cazelles, Bernard Vik, J. O. Viljugrein, H. Stenseth, N. C. |
author_facet |
Saitoh, T. /Cazelles, Bernard Vik, J. O. Viljugrein, H. Stenseth, N. C. |
author_sort |
Saitoh, T. |
title |
Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan |
title_short |
Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan |
title_full |
Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan |
title_fullStr |
Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan |
title_full_unstemmed |
Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan |
title_sort |
effects of regime shifts on the population dynamics of the grey-sided vole in hokkaido, japan |
publishDate |
2006 |
url |
https://www.documentation.ird.fr/hor/fdi:010037783 |
genre |
aleutian low |
genre_facet |
aleutian low |
op_relation |
https://www.documentation.ird.fr/hor/fdi:010037783 oai:ird.fr:fdi:010037783 Saitoh T., Cazelles Bernard, Vik J. O., Viljugrein H., Stenseth N. C. Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan. 2006, 32 (2), p. 109-118 |
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1810489686999695360 |