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Detection of Effects of a High Trophic Level Predator, Sorex unguiculatus (Soricidae, Mammalia), on a Soil Microbial Community in a Cool Temperate Forest in Hokkaido, Using the ARISA Method

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/72188

Title: Detection of Effects of a High Trophic Level Predator, Sorex unguiculatus (Soricidae, Mammalia), on a Soil Microbial Community in a Cool Temperate Forest in Hokkaido, Using the ARISA Method
Authors: Yamamoto, Kana Browse this author
Ohdachi, Satoshi D. Browse this author →KAKEN DB
Kasahara, Yasuhiro Browse this author →KAKEN DB
Keywords: top-down effect
shrew
bacteria
soil ecosystem
ARISA
Issue Date: Sep-2010
Publisher: 日本微生物生態学会
Journal Title: Microbes and Environments
Volume: 25
Issue: 3
Start Page: 197
End Page: 203
Publisher DOI: 10.1264/jsme2.ME10111
Abstract: Soil bacteria play important roles as litter decomposers in most terrestrial ecosystems and microbial activity is affected by activities of soil invertebrates. In soil ecosystems of forests in Hokkaido, the long-clawed shrew is an important predator whose preying on soil invertebrates may indirectly affect soil bacterial communities. To estimate indirect top-down effects of shrews on the soil bacterial community, field experiments were conducted using enclosures in which shrews were introduced and removed, and changes in bacterial community composition, species richness, diversity, and evenness were observed using automated ribosomal intergenic spacer analysis (ARISA). Abiotic environmental conditions (ambient temperature, soil temperature, soil moisture content and soil pH) were also considered. Bacterial community structure was significantly affected by soil moisture content and soil temperature. The significant causes of the change in bacterial species richness, diversity, and evenness varied among experimental treatments; however, soil moisture tended to have significantly negative effects on these indices in all cases. In the present study, effects of shrews on the bacterial community were not detected.
Type: article
URI: http://hdl.handle.net/2115/72188
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大舘 智志

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