THE EVALUATION OF SINANODONTA WOODIANA APPLICATION FEASIBILITY AS A MICROCYSTIS-BLOOMING REMOVAL TOOL IN MICROCOSM EXPERIMENTS

• LIU Yuxian

  Graduate School of Engineering., Kyushu University.

• HAO Aimin

  Research Institute for East Asia Environments, Kyushu University.

• ISERI Yasushi

  West Japan Engineering Consultants, Inc., Japan.

• LI Chunjie

  School of Environmental Science and Engineering., Shanghai Jiaotong University.

• ZHANG Zhenjia

  School of Environmental Science and Engineering., Shanghai Jiaotong University.

• KUBA Takahiro

  Graduate School of Engineering., Kyushu University.

書誌事項

タイトル別名

• THE EVALUATION OF <i>SINANODONTA WOODIANA</i> APPLICATION FEASIBILITY AS A <i>MICROCYSTIS</i>-BLOOMING REMOVAL TOOL IN MICROCOSM EXPERIMENTS

抄録

 Sinanodonta woodiana is widely distributed throughout Chinese freshwaters and is an important economic pearl mollusk. In order to evaluate the application feasibility of S. woodiana as a Microcystis-blooming removal tool, a series of microcosm experiments were performed. First the 6-day feeding responses experiment was carried out with naturally blooming pond water and the bivalves in laboratory, which was lasted for 6 days. In this experiment, phytoplankton abundances and community structure were analyzed on 0-day and 6-day for both control and treatment microcosms; also, filtration rate, absorption efficiency, oxygen consumption rate and ammonia excretion rate of S. woodiana were measured on 0-day and 6-day and finally the scope for growth (SFG) value as a measure of metabolic energy balance for S. woodiana was calculated and compared. The results showed that Microcystis spp. of colony and unicell were reduced obviously on the 6-day; meanwhile, after six day's exposure to Microcystis-blooming pond water, the SFG value for S. woodiana increased. Furthermore, in the extended long-term grazing experiment, bivalves were fed with highly concentrated toxic Microcystis-blooming water and non-toxic Chlorella at the constant concentration (Chl.a=424.5 mg/m³) in two respective tanks for 12 days. No bivalve mortality was registered on both Chlorella group and blooming water group. In addition, SFGs were significantly higher for the blooming water group, compared with them for Chlorella group on 3-day, 6-day and 12-day. These results indicated that toxic Microcystis spp. in natural eutrophic water can be removed greatly by S. woodiana; moreover, the bivalves themselves have strong adaptation ability when they were exposed to toxic natural eutrophic water. Therefore, it can be inferred that there is high application feasibility of S. woodiana as a Microcystis-blooming controller in practice.

収録刊行物

• 土木学会論文集Ｇ（環境）

  土木学会論文集Ｇ（環境） 69 (7), III_45-III_53, 2013

  公益社団法人 土木学会

キーワード

• Sinanodonta woodiana
• Microcystis-blooming
• SFG (scope for growth)
• microcystins (MCs)
• application feasibility

詳細情報

• CRID: 1390282680335857792
• NII論文ID: 130004962569
• DOI: 10.2208/jscejer.69.iii_45
• ISSN: 21856648
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可