国立研究開発法人土木研究所

論文・刊行物検索

利用者の方へ

詳細情報

論文投稿  Unionoid mussels as an indicator of fish communities: A conceptual framework and empirical evidence

作成年度 2012 年度
論文名 Unionoid mussels as an indicator of fish communities: A conceptual framework and empirical evidence
論文名(和訳)
論文副題
発表会 Ecological Indicators 24: 127-137
誌名 (記載なし)
巻・号・回
発表年月日 2013/03/01
所属研究室/機関名 著者名(英名)
北海道大学地球環境科学研究院根岸淳二郎
独立行政法人土木研究所水環境研究グループ自然共生研究センター永山滋也
岐阜経済大学久米学
兵庫県立大学自然・環境科学研究所兵庫県立コウノトリの郷公園佐川志朗
独立行政法人土木研究所水環境研究グループ自然共生研究センター萱場祐一
抄録
We tested the hypothesis that globally imperiled freshwater mussels(Order:Unionoida) can be used as an indicator of fish communities in lowland aquatic systems for relatively small geographic areas (i.e.,<100km2). The survey was conducted in 13 reaches within a network of agricultural drainage channels and in 9 floodplain backwaters in Central Japan. In each site, the fish community was examined on four seasonal occasions (spring to early summer, mid-summer, fall to early winter, and winter) and related to the mussel community. Total abundance, taxon richness, and diversity index were used to characterize fish communities. Mussel community variables predicted some aspects of fish communities, but such patterns were seasonally limited. In both systems, mussel community variables had no predictive power for the total abundance of fishes. In drainage channels, taxon richness of mussels was a good predictor of all fish community variables except for total abundance in early summer. In winter, mussel abundance predicted well the taxon richness of the fish community, while taxon richness predicted the diversity index of the fish community. In backwaters, mussel abundance was a good predictor of fish community variables except total abundance in mid-summer. A relatively minor portion(<23%) of fish-mussel relationships was attributable to direct commensalism between mussels and bitterlings. A conceptual framework was provided to help identify the mechanisms behind fish-mussel relationships. Our findings validated the use of mussels as an indicator of hight-quality summer rearing habitats in backwaters and wintering and reproduction habitats of fishes in drainage channels.
ページの先頭へ

この画面を閉じる

Copyright (C) 2022 Independent Administrative Institution Public Works Research Institute