Effects of Treated Wastewater Discharge on Dynamics of Particulate Organic Matter and Community Structure of Benthic Macroinvertebrates in an Urban River
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- HOSOMI Akihiko
- School of Engineering, the University of Tokyo
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- KASUGA Ikuro
- School of Engineering, the University of Tokyo
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- FURUMAI Hiroaki
- School of Engineering, the University of Tokyo
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- YOSHIMURA Chihiro
- Department of Civil Engineering, Tokyo Institute of Technology
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- NAKAJIMA Fumiyuki
- Environmental Science Center, the University of Tokyo
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- KAGAYA Takashi
- School of Agricultural and Life Sciences, the University of Tokyo
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- KURISU Futoshi
- School of Engineering, the University of Tokyo
Bibliographic Information
- Other Title
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- 河川の粒状有機物動態と底生動物の群集構造に及ぼす下水処理水の影響
- カセン ノ リュウジョウ ユウキブツ ドウタイ ト テイセイ ドウブツ ノ グンシュウ コウゾウ ニ オヨボス ゲスイ ショリスイ ノ エイキョウ
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Abstract
Urban river ecosystems are under the influence of treated wastewater effluent, but the relationship between the effluent and aquatic food web has not been well understood. In the Tama River, we investigated the effects of treated wastewater on a benthic macroinvertebrate community and main food sources for aquatic organisms including periphyton and fine particulate organic matter (FPOM). After the discharge point, the nutrient concentration significantly increased, and the δ15N of periphyton increased from 4.2‰ to 14.5‰. Furthermore, FPOM collected after the discharge point and suspended solids contained in wastewater effluent showed higher δ15N values than FPOM collected from the upstream section having no treated wastewater effect. In a macroinvertebrate community, an increase in δ15N was also observed for gatherers and filterers mainly feeding on FPOM after the discharge point. These results imply that the effects of treated wastewater discharge extend to consumers in the food web structure through primary production and FPOM.
Journal
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- Journal of Japan Society on Water Environment
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Journal of Japan Society on Water Environment 32 (7), 375-381, 2009
Japan Society on Water Environment
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Keywords
Details 詳細情報について
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- CRID
- 1390282680057077504
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- NII Article ID
- 10025186173
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- NII Book ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD1MXhtVelsrjP
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- ISSN
- 18813690
- 09168958
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- NDL BIB ID
- 10332721
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed