Factors influencing lifespan dependency on agricultural crops by brown bears
Investigating factors underlying human-wildlife conflicts in agricultural landscapes is important for both preventing crop damage and wildlife conservation. Although environments surrounding crop fields are considered causal factors, incorporating individual aspects of animals, such as demographic a...
Published in: | Landscape and Ecological Engineering |
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Online Access: | http://hdl.handle.net/2115/86176 https://doi.org/10.1007/s11355-021-00446-x |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/86176 2023-05-15T18:41:56+02:00 Factors influencing lifespan dependency on agricultural crops by brown bears Sakiyama, Tomoki Morimoto, Junko Matsubayashi, Jun Furukawa, Yasuto Kondo, Mami Tsuruga, Hifumi Mano, Tsutomu Nakamura, Futoshi http://hdl.handle.net/2115/86176 https://doi.org/10.1007/s11355-021-00446-x eng eng Springer http://hdl.handle.net/2115/86176 Landscape and ecological engineering, 17: 351-362 http://dx.doi.org/10.1007/s11355-021-00446-x This is a post-peer-review, pre-copyedit version of an article published in Landscape and Ecological Engineering. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11355-021-00446-x Agricultural landscape Body size Hokkaido Human-wildlife conflict Stable isotope Ursus arctos 610 article (author version) fthokunivhus https://doi.org/10.1007/s11355-021-00446-x 2022-11-18T01:06:22Z Investigating factors underlying human-wildlife conflicts in agricultural landscapes is important for both preventing crop damage and wildlife conservation. Although environments surrounding crop fields are considered causal factors, incorporating individual aspects of animals, such as demographic and physical characteristics, into the investigation may aid the prediction of how nuisance control affects wildlife population structures. Here, we assessed the relationship of corn consumption by Hokkaido brown bears (Ursus arctos) with both demographic (sex and age) and physical (body size) characteristics and environmental factors (human presence and crop accessibility). We estimated the proportion of corn in the lifespan diet for both female (n = 61) and male (n = 62) bears using carbon and nitrogen stable isotope analyses. Then, we analyzed the factors correlated with corn consumption using a generalized linear model. Female and male bears consumed corn from 1.3 to 30.9% and 1.3 to 42.0% of their lifespan diet, respectively. Corn consumption by female bears was not correlated with any explanatory variables, whereas that of male bears was positively correlated with their body size and crop accessibility but negatively correlated with human presence. Large male bears were more likely to have consumed more corn than small male bears, but the selective harvest of large bears may cause dwarfism of their overall population, impacting the local population dynamics. To reduce agricultural damage and population structure alteration of brown bears, the opportunity for them to learn to eat crops must be eliminated through border management between forests and agricultural fields and the relocation of agricultural fields when possible. Article in Journal/Newspaper Ursus arctos Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Landscape and Ecological Engineering 17 3 351 362 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Agricultural landscape Body size Hokkaido Human-wildlife conflict Stable isotope Ursus arctos 610 |
spellingShingle |
Agricultural landscape Body size Hokkaido Human-wildlife conflict Stable isotope Ursus arctos 610 Sakiyama, Tomoki Morimoto, Junko Matsubayashi, Jun Furukawa, Yasuto Kondo, Mami Tsuruga, Hifumi Mano, Tsutomu Nakamura, Futoshi Factors influencing lifespan dependency on agricultural crops by brown bears |
topic_facet |
Agricultural landscape Body size Hokkaido Human-wildlife conflict Stable isotope Ursus arctos 610 |
description |
Investigating factors underlying human-wildlife conflicts in agricultural landscapes is important for both preventing crop damage and wildlife conservation. Although environments surrounding crop fields are considered causal factors, incorporating individual aspects of animals, such as demographic and physical characteristics, into the investigation may aid the prediction of how nuisance control affects wildlife population structures. Here, we assessed the relationship of corn consumption by Hokkaido brown bears (Ursus arctos) with both demographic (sex and age) and physical (body size) characteristics and environmental factors (human presence and crop accessibility). We estimated the proportion of corn in the lifespan diet for both female (n = 61) and male (n = 62) bears using carbon and nitrogen stable isotope analyses. Then, we analyzed the factors correlated with corn consumption using a generalized linear model. Female and male bears consumed corn from 1.3 to 30.9% and 1.3 to 42.0% of their lifespan diet, respectively. Corn consumption by female bears was not correlated with any explanatory variables, whereas that of male bears was positively correlated with their body size and crop accessibility but negatively correlated with human presence. Large male bears were more likely to have consumed more corn than small male bears, but the selective harvest of large bears may cause dwarfism of their overall population, impacting the local population dynamics. To reduce agricultural damage and population structure alteration of brown bears, the opportunity for them to learn to eat crops must be eliminated through border management between forests and agricultural fields and the relocation of agricultural fields when possible. |
format |
Article in Journal/Newspaper |
author |
Sakiyama, Tomoki Morimoto, Junko Matsubayashi, Jun Furukawa, Yasuto Kondo, Mami Tsuruga, Hifumi Mano, Tsutomu Nakamura, Futoshi |
author_facet |
Sakiyama, Tomoki Morimoto, Junko Matsubayashi, Jun Furukawa, Yasuto Kondo, Mami Tsuruga, Hifumi Mano, Tsutomu Nakamura, Futoshi |
author_sort |
Sakiyama, Tomoki |
title |
Factors influencing lifespan dependency on agricultural crops by brown bears |
title_short |
Factors influencing lifespan dependency on agricultural crops by brown bears |
title_full |
Factors influencing lifespan dependency on agricultural crops by brown bears |
title_fullStr |
Factors influencing lifespan dependency on agricultural crops by brown bears |
title_full_unstemmed |
Factors influencing lifespan dependency on agricultural crops by brown bears |
title_sort |
factors influencing lifespan dependency on agricultural crops by brown bears |
publisher |
Springer |
url |
http://hdl.handle.net/2115/86176 https://doi.org/10.1007/s11355-021-00446-x |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
http://hdl.handle.net/2115/86176 Landscape and ecological engineering, 17: 351-362 http://dx.doi.org/10.1007/s11355-021-00446-x |
op_rights |
This is a post-peer-review, pre-copyedit version of an article published in Landscape and Ecological Engineering. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11355-021-00446-x |
op_doi |
https://doi.org/10.1007/s11355-021-00446-x |
container_title |
Landscape and Ecological Engineering |
container_volume |
17 |
container_issue |
3 |
container_start_page |
351 |
op_container_end_page |
362 |
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1766231509108260864 |