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
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 effec...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/89383 2023-07-02T03:33:54+02:00 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 Tomita, Kanji Hiura, Tsutom http://hdl.handle.net/2115/89383 https://doi.org/10.1016/j.pedobi.2022.150807 eng eng Elsevier http://hdl.handle.net/2115/89383 Pedobiologia, 91-92: 150807 http://dx.doi.org/10.1016/j.pedobi.2022.150807 © 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/ Bioturbation Nitrogen mineralization Soil disturbance Ursus arctos 468 article (author version) fthokunivhus https://doi.org/10.1016/j.pedobi.2022.150807 2023-06-09T00:05:48Z 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. Article in Journal/Newspaper Ursus arctos Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Bioturbation Nitrogen mineralization Soil disturbance Ursus arctos 468 |
spellingShingle |
Bioturbation Nitrogen mineralization Soil disturbance Ursus arctos 468 Tomita, Kanji Hiura, Tsutom 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 |
topic_facet |
Bioturbation Nitrogen mineralization Soil disturbance Ursus arctos 468 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Tomita, Kanji Hiura, Tsutom |
author_facet |
Tomita, Kanji Hiura, Tsutom |
author_sort |
Tomita, Kanji |
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 |
title_short |
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_full |
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_fullStr |
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_full_unstemmed |
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_sort |
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 |
publisher |
Elsevier |
url |
http://hdl.handle.net/2115/89383 https://doi.org/10.1016/j.pedobi.2022.150807 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
http://hdl.handle.net/2115/89383 Pedobiologia, 91-92: 150807 http://dx.doi.org/10.1016/j.pedobi.2022.150807 |
op_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/ |
op_doi |
https://doi.org/10.1016/j.pedobi.2022.150807 |
_version_ |
1770274057054322688 |