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Hokkaido University Collection of Scholarly and Academic Papers >
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Negative effects of brown bear digging on soil nitrogen availability and production in larch plantations in northern Japan : Their potential role as an agent of bioturbation
| Title: | Negative effects of brown bear digging on soil nitrogen availability and production in larch plantations in northern Japan : Their potential role as an agent of bioturbation |
| Authors: | Tomita, Kanji Browse this author | | Hiura, Tsutom Browse this author →KAKEN DB |
| Keywords: | Bioturbation | | Nitrogen mineralization | | Soil disturbance | | Ursus arctos |
| Issue Date: | Jun-2022 |
| Publisher: | Elsevier |
| Journal Title: | Pedobiologia |
| Volume: | 91-92 |
| Start Page: | 150807 |
| Publisher DOI: | 10.1016/j.pedobi.2022.150807 |
| Abstract: | Digging mammals displace a large amount of soil, thereby strongly altering soil ecosystem processes such as nitrogen cycling through bioturbation. Although it is well known that bears displace a large amount of soil by digging for food and denning, there is negligible empirical evidence of the effects on soil properties. In the Shiretoko World Heritage site, we investigated the effects of brown bear digging for cicada nymphs on soil properties, such as soil water content, organic and inorganic nitrogen concentrations, and nitrogen mineralization rate that are important components of soil ecosystem function and are essential for plant growth. We compared the properties of soil recently dug by brown bears with undisturbed soil in larch plantations. We found that brown bear digging decreased soil water content, organic matter, inorganic nitrogen concentration, net mineralization rates. Our results suggest that soil digging by brown bear may reduce plant growth by decreasing soil nutrient availability, thereby diminishing the net primary production of the larch plantation at the study site. |
| Rights: | © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/89383 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 富田 幹次
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