The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears
There is increasing evidence of indirect effects of hunting on populations. In species with sexually selected infanticide (SSI), hunting may decrease juvenile survival by increasing male turnover. We aimed to evaluate the relative importance of direct and indirect effects of hunting via SSI on the p...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | http://dx.doi.org/10.1098/rspb.2014.1840 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2014.1840 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2014.1840 |
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crroyalsociety:10.1098/rspb.2014.1840 2024-09-15T18:40:14+00:00 The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears Gosselin, Jacinthe Zedrosser, Andreas Swenson, Jon E. Pelletier, Fanie 2015 http://dx.doi.org/10.1098/rspb.2014.1840 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2014.1840 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2014.1840 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 282, issue 1798, page 20141840 ISSN 0962-8452 1471-2954 journal-article 2015 crroyalsociety https://doi.org/10.1098/rspb.2014.1840 2024-07-08T04:26:35Z There is increasing evidence of indirect effects of hunting on populations. In species with sexually selected infanticide (SSI), hunting may decrease juvenile survival by increasing male turnover. We aimed to evaluate the relative importance of direct and indirect effects of hunting via SSI on the population dynamics of the Scandinavian brown bear ( Ursus arctos ). We performed prospective and retrospective demographic perturbation analyses for periods with low and high hunting pressures. All demographic rates, except yearling survival, were lower under high hunting pressure, which led to a decline in population growth under high hunting pressure ( λ = 0.975; 95% CI = 0.914–1.011). Hunting had negative indirect effects on the population through an increase in SSI, which lowered cub survival and possibly also fecundity rates. Our study suggests that SSI could explain 13.6% of the variation in population growth. Hunting also affected the relative importance of survival and fecundity of adult females for population growth, with fecundity being more important under low hunting pressure and survival more important under high hunting pressure. Our study sheds light on the importance of direct and indirect effects of hunting on population dynamics, and supports the contention that hunting can have indirect negative effects on populations through SSI. Article in Journal/Newspaper Ursus arctos The Royal Society Proceedings of the Royal Society B: Biological Sciences 282 1798 20141840 |
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Open Polar |
collection |
The Royal Society |
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crroyalsociety |
language |
English |
description |
There is increasing evidence of indirect effects of hunting on populations. In species with sexually selected infanticide (SSI), hunting may decrease juvenile survival by increasing male turnover. We aimed to evaluate the relative importance of direct and indirect effects of hunting via SSI on the population dynamics of the Scandinavian brown bear ( Ursus arctos ). We performed prospective and retrospective demographic perturbation analyses for periods with low and high hunting pressures. All demographic rates, except yearling survival, were lower under high hunting pressure, which led to a decline in population growth under high hunting pressure ( λ = 0.975; 95% CI = 0.914–1.011). Hunting had negative indirect effects on the population through an increase in SSI, which lowered cub survival and possibly also fecundity rates. Our study suggests that SSI could explain 13.6% of the variation in population growth. Hunting also affected the relative importance of survival and fecundity of adult females for population growth, with fecundity being more important under low hunting pressure and survival more important under high hunting pressure. Our study sheds light on the importance of direct and indirect effects of hunting on population dynamics, and supports the contention that hunting can have indirect negative effects on populations through SSI. |
format |
Article in Journal/Newspaper |
author |
Gosselin, Jacinthe Zedrosser, Andreas Swenson, Jon E. Pelletier, Fanie |
spellingShingle |
Gosselin, Jacinthe Zedrosser, Andreas Swenson, Jon E. Pelletier, Fanie The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
author_facet |
Gosselin, Jacinthe Zedrosser, Andreas Swenson, Jon E. Pelletier, Fanie |
author_sort |
Gosselin, Jacinthe |
title |
The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
title_short |
The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
title_full |
The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
title_fullStr |
The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
title_full_unstemmed |
The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
title_sort |
relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears |
publisher |
The Royal Society |
publishDate |
2015 |
url |
http://dx.doi.org/10.1098/rspb.2014.1840 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2014.1840 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2014.1840 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 282, issue 1798, page 20141840 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2014.1840 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
282 |
container_issue |
1798 |
container_start_page |
20141840 |
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1810484537318178816 |