Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals
The literature reveals opposing views regarding the importance of intrinsic population regulation in mammals. Different models have been proposed; adding importance to contrasting life histories, body sizes and social interactions. Here we evaluate current theory based on results from two Scandinavi...
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Online Access: | http://hdl.handle.net/11250/278044 https://doi.org/10.1007/s00442-014-2892-z |
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fthsinnlandet:oai:brage.inn.no:11250/278044 2024-03-03T08:49:18+00:00 Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals Odden, Morten Ims, Rolf Anker Støen, Ole-Gunnar Swenson, Jon Andreassen, Harry Peter 2014 application/pdf http://hdl.handle.net/11250/278044 https://doi.org/10.1007/s00442-014-2892-z eng eng Springer Odden, M., Ims, R. A., Støen, O.-G., Swenson, J., & Andreassen, H. P. (2014). Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals. Oecologia, 175(1), 1-10. doi:10.1007/s00442-014-2892-z http://hdl.handle.net/11250/278044 https://doi.org/10.1007/s00442-014-2892-z 1-10 175 Oecologia 1 dispersal Infanticide intrinsic population regulation Reproductive suppression microtus Journal article Peer reviewed 2014 fthsinnlandet https://doi.org/10.1007/s00442-014-2892-z 2024-02-02T12:42:16Z The literature reveals opposing views regarding the importance of intrinsic population regulation in mammals. Different models have been proposed; adding importance to contrasting life histories, body sizes and social interactions. Here we evaluate current theory based on results from two Scandinavian projects studying two ecologically different mammal species with contrasting body sizes and life history traits: the root vole Microtus oeconomus and the brown bear Ursus arctos. We emphasize four inter-linked behavioral aspects—territoriality, dispersal, social inhibition of breeding, and infanticide—that together form a density-dependent syndrome with potentially regulatory effects on population growth. We show that the two species are similar in all four behaviors and thus the overall regulatory syndrome. Females form matrilineal assemblages, female natal dispersal is negatively density dependent and breeding is suppressed in philopatric young females. In both species, male turnover due to extrinsic mortality agents cause infanticide with negative effects on population growth. The sex-biased and density-dependent dispersal patterns promote the formation of matrilineal clusters which, in turn, leads to reproductive suppression with potentially regulatory effects. Hence, we show that intrinsic population regulation interacting with extrinsic mortality agents may occur irrespective of taxon, life history and body size. Our review stresses the significance of a mechanistic approach to understanding population ecology. We also show that experimental model populations are useful to elucidate natural populations of other species with similar social systems. In particular, such experiments should be combined with methodical innovations that may unravel the effects of cryptic intrinsic mechanisms such as infanticide Article in Journal/Newspaper Ursus arctos Høgskolen i Innlandet: Brage INN Oecologia 175 1 1 10 |
institution |
Open Polar |
collection |
Høgskolen i Innlandet: Brage INN |
op_collection_id |
fthsinnlandet |
language |
English |
topic |
dispersal Infanticide intrinsic population regulation Reproductive suppression microtus |
spellingShingle |
dispersal Infanticide intrinsic population regulation Reproductive suppression microtus Odden, Morten Ims, Rolf Anker Støen, Ole-Gunnar Swenson, Jon Andreassen, Harry Peter Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
topic_facet |
dispersal Infanticide intrinsic population regulation Reproductive suppression microtus |
description |
The literature reveals opposing views regarding the importance of intrinsic population regulation in mammals. Different models have been proposed; adding importance to contrasting life histories, body sizes and social interactions. Here we evaluate current theory based on results from two Scandinavian projects studying two ecologically different mammal species with contrasting body sizes and life history traits: the root vole Microtus oeconomus and the brown bear Ursus arctos. We emphasize four inter-linked behavioral aspects—territoriality, dispersal, social inhibition of breeding, and infanticide—that together form a density-dependent syndrome with potentially regulatory effects on population growth. We show that the two species are similar in all four behaviors and thus the overall regulatory syndrome. Females form matrilineal assemblages, female natal dispersal is negatively density dependent and breeding is suppressed in philopatric young females. In both species, male turnover due to extrinsic mortality agents cause infanticide with negative effects on population growth. The sex-biased and density-dependent dispersal patterns promote the formation of matrilineal clusters which, in turn, leads to reproductive suppression with potentially regulatory effects. Hence, we show that intrinsic population regulation interacting with extrinsic mortality agents may occur irrespective of taxon, life history and body size. Our review stresses the significance of a mechanistic approach to understanding population ecology. We also show that experimental model populations are useful to elucidate natural populations of other species with similar social systems. In particular, such experiments should be combined with methodical innovations that may unravel the effects of cryptic intrinsic mechanisms such as infanticide |
format |
Article in Journal/Newspaper |
author |
Odden, Morten Ims, Rolf Anker Støen, Ole-Gunnar Swenson, Jon Andreassen, Harry Peter |
author_facet |
Odden, Morten Ims, Rolf Anker Støen, Ole-Gunnar Swenson, Jon Andreassen, Harry Peter |
author_sort |
Odden, Morten |
title |
Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
title_short |
Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
title_full |
Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
title_fullStr |
Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
title_full_unstemmed |
Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
title_sort |
bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals |
publisher |
Springer |
publishDate |
2014 |
url |
http://hdl.handle.net/11250/278044 https://doi.org/10.1007/s00442-014-2892-z |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
1-10 175 Oecologia 1 |
op_relation |
Odden, M., Ims, R. A., Støen, O.-G., Swenson, J., & Andreassen, H. P. (2014). Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals. Oecologia, 175(1), 1-10. doi:10.1007/s00442-014-2892-z http://hdl.handle.net/11250/278044 https://doi.org/10.1007/s00442-014-2892-z |
op_doi |
https://doi.org/10.1007/s00442-014-2892-z |
container_title |
Oecologia |
container_volume |
175 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
10 |
_version_ |
1792506495758237696 |