Spatio-temporal variation and determinants of fish community structure in a mountain floodplain stream.

Q: What does this research mean for the field?

The spatio-temporal dynamics of fish community structure in mountain floodplain rivers are driven by the diversity of reach types, such as mainstreams and small distributaries, along with seasonal and interannual environmental changes. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Ikumi Oda; Junjiro N. Negishi; Tatsuro Nakaji; Futoshi Nakamura; Nobuo Ishiyama; Hiromi Uno; Haruo IWASE; Keizo WATANABE; Yugo Hashimoto; Kazuya Sawasaki; Yuichiro HISATOMI; Asumi ISHINO; Honoka MINAMI; Kazutoshi Ueda; Yuina Kido; Naofumi Murakami; Hiroaki FUJIWARA; Go KUBOYAMA; K. Orito; Kazuya Fujii; Takayuki KENMOTSU; Sou Inoue; Keita Kawajiri; Natsuki YAMADA; Atsushi KAWAMURA; Rei Sakai; Yuko HARA; Nobuyuki NAKANO

doi:10.3825/ece.24-00013

Key Points

The study aims to identify the factors determining spatio-temporal variation in fish community structure in a mountain floodplain stream.
Field surveys conducted in August 2021, June 2022, September 2022, and June 2023 across four river segments.
Environmental factors such as flow rate, water depth, and temperature were measured.
Fish community surveys assessed the distribution and density of various fish species across these segments.
Downstream tributary segments showed significantly smaller water width and depth compared to other types.
Increased water temperature and decreased flow rates were observed towards late summer, with 2021 being notably warmer and drier.
Fish density changes, particularly in young specimens of Hanasuzume and Ito, reflected environmental conditions.

Implication

Examines fish community structure in mountain floodplains, highlighting environmental influences.

Abstract

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Cite This Study

Oda et al. (2026) studied this question.

synapsesocial.com/papers/6a2008639d62e9997c04b8a3 https://doi.org/10.3825/ece.24-00013

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Spatio-temporal variation and determinants of fish community structure in a mountain floodplain stream.

Key Points

Implication

Abstract

Discussion

Cite This Study

Spatio-temporal variation and determinants of fish community structure in a mountain floodplain stream.

Key Points

Implication

Abstract

Discussion

Cite This Study

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