Interlinking hare and lynx dynamics using a century's worth of annual data
Abstract The classic fur trade records on Canadian lynx ( Lynx canadensis ) have rarely been analysed in direct conjunction with data on its principal prey, the snowshoe hare ( Lepus americanus ). Comparable long‐term data for hare exist only for a region south of Hudson Bay. We fitted a bivariate l...
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crwiley:10.1007/s10144-008-0088-2 2024-06-02T08:07:53+00:00 Interlinking hare and lynx dynamics using a century's worth of annual data Vik, Jon Olav Brinch, Christian N. Boutin, Stan Stenseth, Nils Christian Universitetet i Oslo 2008 http://dx.doi.org/10.1007/s10144-008-0088-2 https://onlinelibrary.wiley.com/doi/pdf/10.1007/s10144-008-0088-2 https://onlinelibrary.wiley.com/doi/full-xml/10.1007/s10144-008-0088-2 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Population Ecology volume 50, issue 3, page 267-274 ISSN 1438-3896 1438-390X journal-article 2008 crwiley https://doi.org/10.1007/s10144-008-0088-2 2024-05-03T10:36:45Z Abstract The classic fur trade records on Canadian lynx ( Lynx canadensis ) have rarely been analysed in direct conjunction with data on its principal prey, the snowshoe hare ( Lepus americanus ). Comparable long‐term data for hare exist only for a region south of Hudson Bay. We fitted a bivariate log‐linear time‐series model to this hare and lynx data to disentangle the within‐ and between‐population interactions of these species. To reduce problems with fur returns being non‐normal and non‐linearly related to abundance, we transformed the fur returns to a normal distribution based on sample quantiles. The estimated effect on next year's lynx abundance of a 1% increase in current hare abundance was a 0.23% (SE = 0.05) increase in lynx. Conversely, a 1% increase in current lynx abundance corresponded to a 0.46% (SE = 0.12) decrease in next year's hare abundance. This contrasts with some earlier studies. However, these studies mixed hare data from south of Hudson Bay with lynx totals for all of Canada. Despite this asymmetry of interaction strengths, coefficients of determination were similar for hare versus lynx and lynx versus hare, because hare abundance varies more than lynx. Both species showed clear intraspecific density‐dependence of about equal strength. A 1% increase in current abundance increased next year's abundance by about 0.75%. Article in Journal/Newspaper Hudson Bay Lynx Wiley Online Library Canada Hudson Hudson Bay Population Ecology 50 3 267 274 |
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Wiley Online Library |
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English |
description |
Abstract The classic fur trade records on Canadian lynx ( Lynx canadensis ) have rarely been analysed in direct conjunction with data on its principal prey, the snowshoe hare ( Lepus americanus ). Comparable long‐term data for hare exist only for a region south of Hudson Bay. We fitted a bivariate log‐linear time‐series model to this hare and lynx data to disentangle the within‐ and between‐population interactions of these species. To reduce problems with fur returns being non‐normal and non‐linearly related to abundance, we transformed the fur returns to a normal distribution based on sample quantiles. The estimated effect on next year's lynx abundance of a 1% increase in current hare abundance was a 0.23% (SE = 0.05) increase in lynx. Conversely, a 1% increase in current lynx abundance corresponded to a 0.46% (SE = 0.12) decrease in next year's hare abundance. This contrasts with some earlier studies. However, these studies mixed hare data from south of Hudson Bay with lynx totals for all of Canada. Despite this asymmetry of interaction strengths, coefficients of determination were similar for hare versus lynx and lynx versus hare, because hare abundance varies more than lynx. Both species showed clear intraspecific density‐dependence of about equal strength. A 1% increase in current abundance increased next year's abundance by about 0.75%. |
author2 |
Universitetet i Oslo |
format |
Article in Journal/Newspaper |
author |
Vik, Jon Olav Brinch, Christian N. Boutin, Stan Stenseth, Nils Christian |
spellingShingle |
Vik, Jon Olav Brinch, Christian N. Boutin, Stan Stenseth, Nils Christian Interlinking hare and lynx dynamics using a century's worth of annual data |
author_facet |
Vik, Jon Olav Brinch, Christian N. Boutin, Stan Stenseth, Nils Christian |
author_sort |
Vik, Jon Olav |
title |
Interlinking hare and lynx dynamics using a century's worth of annual data |
title_short |
Interlinking hare and lynx dynamics using a century's worth of annual data |
title_full |
Interlinking hare and lynx dynamics using a century's worth of annual data |
title_fullStr |
Interlinking hare and lynx dynamics using a century's worth of annual data |
title_full_unstemmed |
Interlinking hare and lynx dynamics using a century's worth of annual data |
title_sort |
interlinking hare and lynx dynamics using a century's worth of annual data |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1007/s10144-008-0088-2 https://onlinelibrary.wiley.com/doi/pdf/10.1007/s10144-008-0088-2 https://onlinelibrary.wiley.com/doi/full-xml/10.1007/s10144-008-0088-2 |
geographic |
Canada Hudson Hudson Bay |
geographic_facet |
Canada Hudson Hudson Bay |
genre |
Hudson Bay Lynx |
genre_facet |
Hudson Bay Lynx |
op_source |
Population Ecology volume 50, issue 3, page 267-274 ISSN 1438-3896 1438-390X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1007/s10144-008-0088-2 |
container_title |
Population Ecology |
container_volume |
50 |
container_issue |
3 |
container_start_page |
267 |
op_container_end_page |
274 |
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1800753017952141312 |