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- W2118209544 abstract "AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections AB 12:291-298 (2011) - DOI: https://doi.org/10.3354/ab00344 Spatial variation in the trophic base of the trichopteran filter feeder Stenopsyche marmorata in an intermittent river in Japan Hyun-Seon Shin*, Osamu Mitamura Limnology Laboratory, Environmental Science Graduate School, University of Shiga Prefecture, Hikone 522-0057, Japan *Email: o10yshin@ec.usp.ac.jp ABSTRACT: Carbon and nitrogen stable isotope analyses were used to determine how a trichopteran filter feeder Stenopsyche marmorata Navas (Stenopsychidae) reflects shifts in food sources (suspended particulate organic matter [SPOM], benthic particulate organic matter [BPOM], and periphyton) in response to channel drying in the alluvial soils of the Inukami River in Japan. The δ13C and δ15N values of consumers shifted to a pattern similar to that of BPOM in an intermittent river, which suggests that particulate organic matter at each station may play an important role as a food source. Moreover, analysis of the upper reaches of the dry channel revealed that both consumers and food sources have enriched δ13C values due to physicochemical characteristics in the channel such as a high water temperatures and stagnant water. Conversely, the lower reaches showed more negative δ13C values, suggesting either a lack of carbon or a reduced supply of terrestrial dissolved carbon, both caused by channel drying, and higher δ15N values, suggesting a high dissolved inorganic nitrogen concentration in groundwater. Our study showed that a dry channel may influence the flow of energy between consumers and their food sources and the flow of nutrients from the upper to the lower reaches. KEY WORDS: Trichopteran filter feeder · δ13C · δ15N · Channel desiccation · Inukami River Full text in pdf format PreviousCite this article as: Shin HS, Mitamura O (2011) Spatial variation in the trophic base of the trichopteran filter feeder Stenopsyche marmorata in an intermittent river in Japan. Aquat Biol 12:291-298. https://doi.org/10.3354/ab00344 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AB Vol. 12, No. 3. Online publication date: June 16, 2011 Print ISSN: 1864-7782; Online ISSN: 1864-7790 Copyright © 2011 Inter-Research." @default.
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- W2118209544 title "Spatial variation in the trophic base of the trichopteran filter feeder Stenopsyche marmorata in an intermittent river in Japan" @default.
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