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タイトル: エゾシカの高密度化が食糞性コガネムシ群集に与える影響
著者: 赤羽, 俊亮
日野, 貴文
吉田, 剛司
キーワード: Dung beetle
deer density
species diversity
species composition
発行日: Aug-2014
出版者: 日本応用動物昆虫学会
抄録: We assessed the impact of sika deer (Cervus nippon yesoensis) density on the abundance, diversity and species composition of forest dung beetle communities. We used baited-traps to collect dung beetles in habitats with two different sika deer densities near Lake Toya, Hokkaido, Japan; Nakajima Island (high-density) and the nearby lakeshore forest (low-density). Overall, our results showed that dung beetle abundance was associated with higher deer density. Although differences in dung beetle species richness, diversity index and beta diversity were not statistically significant among deer densities. NMDS analysis showed that dung beetle community composition did vary with deer density. Our results indicate that, where deer density is high, the dung beetle community characterized by grassland species, including Caccobius jessoensis, Aphodius pusillus and A. rectus. Conversely, where deer density is low, the dung beetle community comprises forest species such as Phelotrupes laevistriatus. Our study suggests that deer density strongly influences dung beetle species abundance via the volume of deer dung. Additionally, we show that forest dwelling dung beetle species give way to grassland dwelling species at higher deer densities.
URI: http://hdl.handle.net/10659/4264
ISSN: 0021-4914
著作権等: 著者権は日本応用動物昆虫学会に帰属します。
著作権リンク: https://www.jstage.jst.go.jp/article/jjaez/58/3/58_269/_article/-char/ja/


このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/10659/4264


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