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 vole Clethrionomys rufocanus (Sundevall, 1846) from 89 time...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/15833 2023-05-15T13:14:51+02:00 Effects of regime shifts on the population dynamics of the grey-sided vole in Hokkaido, Japan Saitoh, Takashi Cazelles, Bernard Vik, Jon Olav Viljugrein, Hildegunn Stenseth, Nils Chr. http://hdl.handle.net/2115/15833 eng eng Inter-Research http://www.int-res.com/journals/cr/cr-home/ http://hdl.handle.net/2115/15833 CLIMATE RESEARCH, 32(2): 109-118 Aleutian Low Pressure Clethrionomys rufocanus Cycle Density dependence Hokkaido 451 article fthokunivhus 2022-11-18T01:01:20Z 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 vole 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. Article in Journal/Newspaper aleutian low Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Aleutian Low Pressure Clethrionomys rufocanus Cycle Density dependence Hokkaido 451 |
spellingShingle |
Aleutian Low Pressure Clethrionomys rufocanus Cycle Density dependence Hokkaido 451 Saitoh, Takashi Cazelles, Bernard Vik, Jon Olav Viljugrein, Hildegunn Stenseth, Nils Chr. 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 451 |
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 vole 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 |
Article in Journal/Newspaper |
author |
Saitoh, Takashi Cazelles, Bernard Vik, Jon Olav Viljugrein, Hildegunn Stenseth, Nils Chr. |
author_facet |
Saitoh, Takashi Cazelles, Bernard Vik, Jon Olav Viljugrein, Hildegunn Stenseth, Nils Chr. |
author_sort |
Saitoh, Takashi |
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 |
publisher |
Inter-Research |
url |
http://hdl.handle.net/2115/15833 |
genre |
aleutian low |
genre_facet |
aleutian low |
op_relation |
http://www.int-res.com/journals/cr/cr-home/ http://hdl.handle.net/2115/15833 CLIMATE RESEARCH, 32(2): 109-118 |
_version_ |
1766265757586423808 |