Predicting the wolf-prey equilibrium point
Difference equation models of wolf and ungulate prey populations were used to estimate the presumed equilibrium ratio by regression of the finite rate of increase of wolf (Canis lupus) populations against wolves per 1000 deer-equivalents of biomass in the prey populations. Further assessment of rati...
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Language: | English |
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Canadian Science Publishing
1999
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Online Access: | http://dx.doi.org/10.1139/z98-240 http://www.nrcresearchpress.com/doi/pdf/10.1139/z98-240 |
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crcansciencepubl:10.1139/z98-240 2023-12-17T10:18:01+01:00 Predicting the wolf-prey equilibrium point Eberhardt, L L Peterson, R O 1999 http://dx.doi.org/10.1139/z98-240 http://www.nrcresearchpress.com/doi/pdf/10.1139/z98-240 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 77, issue 3, page 494-498 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1999 crcansciencepubl https://doi.org/10.1139/z98-240 2023-11-19T13:39:01Z Difference equation models of wolf and ungulate prey populations were used to estimate the presumed equilibrium ratio by regression of the finite rate of increase of wolf (Canis lupus) populations against wolves per 1000 deer-equivalents of biomass in the prey populations. Further assessment of ratios derived directly from estimates of wolf and prey abundance indicated that such ratios probably substantially overestimate the equilibrium value. This prospect is illustrated by data from Isle Royale. The best present estimate of the equilibrium ratio is 122 deer-equivalents per wolf, a value which indicates that the substantial reductions in moose (Alces alces) populations through predation which has been suggested may be correct. Our results indicate that two-state equilibrium models may not be needed to describe wolf-ungulate equilibria. Article in Journal/Newspaper Alces alces Canis lupus Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 77 3 494 498 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Eberhardt, L L Peterson, R O Predicting the wolf-prey equilibrium point |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Difference equation models of wolf and ungulate prey populations were used to estimate the presumed equilibrium ratio by regression of the finite rate of increase of wolf (Canis lupus) populations against wolves per 1000 deer-equivalents of biomass in the prey populations. Further assessment of ratios derived directly from estimates of wolf and prey abundance indicated that such ratios probably substantially overestimate the equilibrium value. This prospect is illustrated by data from Isle Royale. The best present estimate of the equilibrium ratio is 122 deer-equivalents per wolf, a value which indicates that the substantial reductions in moose (Alces alces) populations through predation which has been suggested may be correct. Our results indicate that two-state equilibrium models may not be needed to describe wolf-ungulate equilibria. |
format |
Article in Journal/Newspaper |
author |
Eberhardt, L L Peterson, R O |
author_facet |
Eberhardt, L L Peterson, R O |
author_sort |
Eberhardt, L L |
title |
Predicting the wolf-prey equilibrium point |
title_short |
Predicting the wolf-prey equilibrium point |
title_full |
Predicting the wolf-prey equilibrium point |
title_fullStr |
Predicting the wolf-prey equilibrium point |
title_full_unstemmed |
Predicting the wolf-prey equilibrium point |
title_sort |
predicting the wolf-prey equilibrium point |
publisher |
Canadian Science Publishing |
publishDate |
1999 |
url |
http://dx.doi.org/10.1139/z98-240 http://www.nrcresearchpress.com/doi/pdf/10.1139/z98-240 |
genre |
Alces alces Canis lupus |
genre_facet |
Alces alces Canis lupus |
op_source |
Canadian Journal of Zoology volume 77, issue 3, page 494-498 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z98-240 |
container_title |
Canadian Journal of Zoology |
container_volume |
77 |
container_issue |
3 |
container_start_page |
494 |
op_container_end_page |
498 |
_version_ |
1785536487855489024 |