Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos).
北海道のヒグマ、肉食から草食傾向へ。明治以降の開発が影響か? -考古試料の安定同位体分析から- 京都大学プレスリリース. 2015-03-27. Human activities have had the strongest impacts on natural ecosystems since the last glacial period, including the alteration of interspecific relationships such as food webs. In this paper, we present a historical record of ma...
Main Authors: | , , , , , , , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Publishing Group
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/2433/196586 |
id |
ftkyotouniv:oai:repository.kulib.kyoto-u.ac.jp:2433/196586 |
---|---|
record_format |
openpolar |
spelling |
ftkyotouniv:oai:repository.kulib.kyoto-u.ac.jp:2433/196586 2023-05-15T18:41:55+02:00 Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). Matsubayashi, Jun Morimoto, Junko O Tayasu, Ichiro Mano, Tsutomu Nakajima, Miyuki Takahashi, Osamu Kobayashi, Kyoko Nakamura, Futoshi 松林, 順 森本, 淳子 陀安, 一郎 2015-03-17 application/pdf http://hdl.handle.net/2433/196586 eng eng Nature Publishing Group 10.1038/srep09203 https://www.kyoto-u.ac.jp/ja/research-news/2015-03-27 2045-2322 http://hdl.handle.net/2433/196586 Scientific reports 5 9203 25776994 This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission fromthe license holder in order to reproduce thematerial. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Stable isotope analysis Conservation biology Animal behaviour Journal Article 2015 ftkyotouniv 2021-01-15T00:14:57Z 北海道のヒグマ、肉食から草食傾向へ。明治以降の開発が影響か? -考古試料の安定同位体分析から- 京都大学プレスリリース. 2015-03-27. Human activities have had the strongest impacts on natural ecosystems since the last glacial period, including the alteration of interspecific relationships such as food webs. In this paper, we present a historical record of major alterations of trophic structure by revealing millennium-scale dietary shifts of brown bears (Ursus arctos) on the Hokkaido islands, Japan, using carbon, nitrogen, and sulfur stable isotope analysis. Dietary analysis of brown bears revealed that salmon consumption by bears in the eastern region of Hokkaido significantly decreased from 19% to 8%. In addition, consumption of terrestrial animals decreased from 56% to 5% in western region, and 64% to 8% in eastern region. These dietary shifts are likely to have occurred in the last approximately 100-200 years, which coincides with the beginning of modernisation in this region. Our results suggest that human activities have caused an alteration in the trophic structure of brown bears in the Hokkaido islands. This alteration includes a major decline in the marine-terrestrial linkage in eastern region, and a loss of indirect-interactions between bears and wolves, because the interactions potentially enhanced deer predation by brown bears. Article in Journal/Newspaper Ursus arctos Kyoto University Research Information Repository (KURENAI) |
institution |
Open Polar |
collection |
Kyoto University Research Information Repository (KURENAI) |
op_collection_id |
ftkyotouniv |
language |
English |
topic |
Stable isotope analysis Conservation biology Animal behaviour |
spellingShingle |
Stable isotope analysis Conservation biology Animal behaviour Matsubayashi, Jun Morimoto, Junko O Tayasu, Ichiro Mano, Tsutomu Nakajima, Miyuki Takahashi, Osamu Kobayashi, Kyoko Nakamura, Futoshi Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). |
topic_facet |
Stable isotope analysis Conservation biology Animal behaviour |
description |
北海道のヒグマ、肉食から草食傾向へ。明治以降の開発が影響か? -考古試料の安定同位体分析から- 京都大学プレスリリース. 2015-03-27. Human activities have had the strongest impacts on natural ecosystems since the last glacial period, including the alteration of interspecific relationships such as food webs. In this paper, we present a historical record of major alterations of trophic structure by revealing millennium-scale dietary shifts of brown bears (Ursus arctos) on the Hokkaido islands, Japan, using carbon, nitrogen, and sulfur stable isotope analysis. Dietary analysis of brown bears revealed that salmon consumption by bears in the eastern region of Hokkaido significantly decreased from 19% to 8%. In addition, consumption of terrestrial animals decreased from 56% to 5% in western region, and 64% to 8% in eastern region. These dietary shifts are likely to have occurred in the last approximately 100-200 years, which coincides with the beginning of modernisation in this region. Our results suggest that human activities have caused an alteration in the trophic structure of brown bears in the Hokkaido islands. This alteration includes a major decline in the marine-terrestrial linkage in eastern region, and a loss of indirect-interactions between bears and wolves, because the interactions potentially enhanced deer predation by brown bears. |
author2 |
松林, 順 森本, 淳子 陀安, 一郎 |
format |
Article in Journal/Newspaper |
author |
Matsubayashi, Jun Morimoto, Junko O Tayasu, Ichiro Mano, Tsutomu Nakajima, Miyuki Takahashi, Osamu Kobayashi, Kyoko Nakamura, Futoshi |
author_facet |
Matsubayashi, Jun Morimoto, Junko O Tayasu, Ichiro Mano, Tsutomu Nakajima, Miyuki Takahashi, Osamu Kobayashi, Kyoko Nakamura, Futoshi |
author_sort |
Matsubayashi, Jun |
title |
Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). |
title_short |
Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). |
title_full |
Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). |
title_fullStr |
Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). |
title_full_unstemmed |
Major decline in marine and terrestrial animal consumption by brown bears (Ursus arctos). |
title_sort |
major decline in marine and terrestrial animal consumption by brown bears (ursus arctos). |
publisher |
Nature Publishing Group |
publishDate |
2015 |
url |
http://hdl.handle.net/2433/196586 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
10.1038/srep09203 https://www.kyoto-u.ac.jp/ja/research-news/2015-03-27 2045-2322 http://hdl.handle.net/2433/196586 Scientific reports 5 9203 25776994 |
op_rights |
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission fromthe license holder in order to reproduce thematerial. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
_version_ |
1766231492419125248 |