Harvest dynamics of mustelid carnivores in Ontario, Canada
Virtual population analysis (cohort analysis) was used to reconstruct past dynamics of a harvested population of martens Martes americana in the Bracebridge District of southern Ontario. Harvests in the Bracebridge District were managed using a quota system set by regional authorities. Quotas change...
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crwiley:10.2981/wlb.2001.019 2024-09-15T18:18:21+00:00 Harvest dynamics of mustelid carnivores in Ontario, Canada Fryxell, John Falls, J. Bruce Falls, E. Ann Brooks, Ronald J. Dix, Linda Strickland†, Marjorie Natural Sciences and Engineering Research Council of Canada Ministry of Natural Resources 2001 http://dx.doi.org/10.2981/wlb.2001.019 https://onlinelibrary.wiley.com/doi/full-xml/10.2981/wlb.2001.019 https://onlinelibrary.wiley.com/doi/pdf/10.2981/wlb.2001.019 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Wildlife Biology volume 7, issue 3, page 151-159 ISSN 1903-220X 1903-220X journal-article 2001 crwiley https://doi.org/10.2981/wlb.2001.019 2024-07-09T04:13:38Z Virtual population analysis (cohort analysis) was used to reconstruct past dynamics of a harvested population of martens Martes americana in the Bracebridge District of southern Ontario. Harvests in the Bracebridge District were managed using a quota system set by regional authorities. Quotas changed from year to year, apparently on the basis of past trapping success and variation in the proportion of young‐of‐the‐year among harvested animals. The proportion of young in the harvest was a sensitive indicator of the annual rate of increase, whereas trapping success tended to be linked most strongly, in inverse fashion, with marten harvesting quotas. The proportion of martens harvested each year was constant, averaging 34%, despite 3‐fold variation in marten abundance. This proportion was very close to the maximum sustainable yield (36%) for the population, suggesting that the management policy in the administrative unit was effective in the past in sustaining the source population as well as yielding high trapping returns. Monte Carlo simulation showed that proportionate harvesting, such as the policy in the Bracebridge District during 1972–1991, should be considerably less likely to lead to overharvesting than a constant quota policy, particularly at high average yields. Article in Journal/Newspaper Martes americana Wiley Online Library Wildlife Biology 7 3 151 159 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Virtual population analysis (cohort analysis) was used to reconstruct past dynamics of a harvested population of martens Martes americana in the Bracebridge District of southern Ontario. Harvests in the Bracebridge District were managed using a quota system set by regional authorities. Quotas changed from year to year, apparently on the basis of past trapping success and variation in the proportion of young‐of‐the‐year among harvested animals. The proportion of young in the harvest was a sensitive indicator of the annual rate of increase, whereas trapping success tended to be linked most strongly, in inverse fashion, with marten harvesting quotas. The proportion of martens harvested each year was constant, averaging 34%, despite 3‐fold variation in marten abundance. This proportion was very close to the maximum sustainable yield (36%) for the population, suggesting that the management policy in the administrative unit was effective in the past in sustaining the source population as well as yielding high trapping returns. Monte Carlo simulation showed that proportionate harvesting, such as the policy in the Bracebridge District during 1972–1991, should be considerably less likely to lead to overharvesting than a constant quota policy, particularly at high average yields. |
author2 |
Natural Sciences and Engineering Research Council of Canada Ministry of Natural Resources |
format |
Article in Journal/Newspaper |
author |
Fryxell, John Falls, J. Bruce Falls, E. Ann Brooks, Ronald J. Dix, Linda Strickland†, Marjorie |
spellingShingle |
Fryxell, John Falls, J. Bruce Falls, E. Ann Brooks, Ronald J. Dix, Linda Strickland†, Marjorie Harvest dynamics of mustelid carnivores in Ontario, Canada |
author_facet |
Fryxell, John Falls, J. Bruce Falls, E. Ann Brooks, Ronald J. Dix, Linda Strickland†, Marjorie |
author_sort |
Fryxell, John |
title |
Harvest dynamics of mustelid carnivores in Ontario, Canada |
title_short |
Harvest dynamics of mustelid carnivores in Ontario, Canada |
title_full |
Harvest dynamics of mustelid carnivores in Ontario, Canada |
title_fullStr |
Harvest dynamics of mustelid carnivores in Ontario, Canada |
title_full_unstemmed |
Harvest dynamics of mustelid carnivores in Ontario, Canada |
title_sort |
harvest dynamics of mustelid carnivores in ontario, canada |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.2981/wlb.2001.019 https://onlinelibrary.wiley.com/doi/full-xml/10.2981/wlb.2001.019 https://onlinelibrary.wiley.com/doi/pdf/10.2981/wlb.2001.019 |
genre |
Martes americana |
genre_facet |
Martes americana |
op_source |
Wildlife Biology volume 7, issue 3, page 151-159 ISSN 1903-220X 1903-220X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2981/wlb.2001.019 |
container_title |
Wildlife Biology |
container_volume |
7 |
container_issue |
3 |
container_start_page |
151 |
op_container_end_page |
159 |
_version_ |
1810456474822901760 |