Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments
The 10-year cycles of the snowshoe hare and lynx seen in Hudson’s Bay fur returns represent a classic example of cyclic population dynamics. Hare cycles have been the subject of time series analysis (Stenseth et al. 1998), population modeling (Royama 1992), and field experimentation (Keith and Windb...
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croxfordunivpr:10.1093/oso/9780195140989.003.0008 2023-05-15T18:50:30+02:00 Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments Boutin, Stan Krebs, Charles J. 2002 http://dx.doi.org/10.1093/oso/9780195140989.003.0008 unknown Oxford University Press Population Cycles book-chapter 2002 croxfordunivpr https://doi.org/10.1093/oso/9780195140989.003.0008 2022-08-05T10:29:02Z The 10-year cycles of the snowshoe hare and lynx seen in Hudson’s Bay fur returns represent a classic example of cyclic population dynamics. Hare cycles have been the subject of time series analysis (Stenseth et al. 1998), population modeling (Royama 1992), and field experimentation (Keith and Windberg 1978, Krebs et al. 1986, Murray et al. 1997). However, only two studies have monitored hare populations in detail over at least one full cycle. The first of these was conducted in central Alberta, Canada, by Lloyd Keith and coworkers, and provided a detailed description of the demographic machinery driving changes in hare numbers (Keith et al. 1977, Gary and Keith 1979, Keith et al. 1984). From this came the “Keith hypothesis” that hare cycles are driven by a sequential two-stage trophic interaction with hare declines initiated by winter food shortages and exacerbated by predator numerical responses that lag hare numbers by 1-2 years (Keith 1983, 1990). Predators force hares to low numbers and recovery does not occur until predator densities reach their lowest levels. The second long-term study of hare dynamics took place at Kluane Lake in the southwestern Yukon, Canada. The Kluane project began as an attempt to test the Keith hypothesis through single-factor manipulations of food supply and predation (Krebs et al. 1986, Sinclair et al. 1988, Smith et al. 1988). The first attempt failed to manipulate predators effectively, and plots containing food supplements were quickly overwhelmed by predators moving into the area. Consequently, the experiments failed to alter hare dynamics. Building on this experience, the second phase expanded the scale of experimental manipulations and developed an effective means of excluding predators from selected areas. The study also added an interaction treatment in which predators were excluded and food supplemented. These experiments were designed to test the roles of food supply, predation, and their potential interaction in the dynamics of snowshoe hares (Krebs et al. 1995). In ... Book Part Lynx Yukon Oxford University Press (via Crossref) Canada Kluane Lake ENVELOPE(-138.773,-138.773,61.261,61.261) Krebs ENVELOPE(-61.467,-61.467,-64.633,-64.633) Sinclair ENVELOPE(-63.883,-63.883,-65.733,-65.733) Yukon |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
unknown |
description |
The 10-year cycles of the snowshoe hare and lynx seen in Hudson’s Bay fur returns represent a classic example of cyclic population dynamics. Hare cycles have been the subject of time series analysis (Stenseth et al. 1998), population modeling (Royama 1992), and field experimentation (Keith and Windberg 1978, Krebs et al. 1986, Murray et al. 1997). However, only two studies have monitored hare populations in detail over at least one full cycle. The first of these was conducted in central Alberta, Canada, by Lloyd Keith and coworkers, and provided a detailed description of the demographic machinery driving changes in hare numbers (Keith et al. 1977, Gary and Keith 1979, Keith et al. 1984). From this came the “Keith hypothesis” that hare cycles are driven by a sequential two-stage trophic interaction with hare declines initiated by winter food shortages and exacerbated by predator numerical responses that lag hare numbers by 1-2 years (Keith 1983, 1990). Predators force hares to low numbers and recovery does not occur until predator densities reach their lowest levels. The second long-term study of hare dynamics took place at Kluane Lake in the southwestern Yukon, Canada. The Kluane project began as an attempt to test the Keith hypothesis through single-factor manipulations of food supply and predation (Krebs et al. 1986, Sinclair et al. 1988, Smith et al. 1988). The first attempt failed to manipulate predators effectively, and plots containing food supplements were quickly overwhelmed by predators moving into the area. Consequently, the experiments failed to alter hare dynamics. Building on this experience, the second phase expanded the scale of experimental manipulations and developed an effective means of excluding predators from selected areas. The study also added an interaction treatment in which predators were excluded and food supplemented. These experiments were designed to test the roles of food supply, predation, and their potential interaction in the dynamics of snowshoe hares (Krebs et al. 1995). In ... |
format |
Book Part |
author |
Boutin, Stan Krebs, Charles J. |
spellingShingle |
Boutin, Stan Krebs, Charles J. Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments |
author_facet |
Boutin, Stan Krebs, Charles J. |
author_sort |
Boutin, Stan |
title |
Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments |
title_short |
Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments |
title_full |
Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments |
title_fullStr |
Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments |
title_full_unstemmed |
Understanding the Snowshoe Hare Cycle through Large-scale Field Experiments |
title_sort |
understanding the snowshoe hare cycle through large-scale field experiments |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://dx.doi.org/10.1093/oso/9780195140989.003.0008 |
long_lat |
ENVELOPE(-138.773,-138.773,61.261,61.261) ENVELOPE(-61.467,-61.467,-64.633,-64.633) ENVELOPE(-63.883,-63.883,-65.733,-65.733) |
geographic |
Canada Kluane Lake Krebs Sinclair Yukon |
geographic_facet |
Canada Kluane Lake Krebs Sinclair Yukon |
genre |
Lynx Yukon |
genre_facet |
Lynx Yukon |
op_source |
Population Cycles |
op_doi |
https://doi.org/10.1093/oso/9780195140989.003.0008 |
_version_ |
1766244229071241216 |