森林河川から農地河川への傾度に沿った河川性動物の群集構造および魚類食性の変化  [in Japanese] CHANGES IN STREAM FISH AND INVERTEBRATE ASSEMBLAGES AND FEEDING HABIT OF FISH ALONG FOREST-AGRICULTURAL GRADIENT  [in Japanese]

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Author(s)

    • 三宅 洋 MIYAKE Yo
    • 愛媛大学 大学院理工学研究科 Graduate School of Science and Engineering, Ehime University
    • 上田 竜士 UEDA Ryuji
    • 愛媛大学 大学院理工学研究科 Graduate School of Science and Engineering, Ehime University

Abstract

We conducted a field survey in 8 tributaries of the Shigenobu River to elucidate the influence of catchment land use on fish and invertebrate assemblages and feeding habit of fish. Fish and invertebrate assemblages were dominated by high-temperature and pollution tolerant taxa in agricultural streams. Dominant omnivorous fish, <i>Phoxinus oxycephalus jouyi</i>, selectively fed on periphyton in agricultural streams while it utilized various food items in forest streams. We concluded that changes in water temperature and nutrient concentration would generate synchronous changes in community structures of fish and invertebrates and, moreover, fish feeding, along the forest-agricultural gradient.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 68(4), I_697-I_702, 2012

    Japan Society of Civil Engineers

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