Short-term dynamics of cyanobacterial toxins (microcystins) following a discharge from a coastal reservoir in Isahaya Bay, Japan

Akira Umehara, Tomohiro Komorita, Akira Tai, Tohru Takahashi, Ryo Orita, Hiroaki Tsutsumi

研究成果: ジャーナルへの寄稿記事

7 引用 (Scopus)

抄録

Freshwater cyanobacteria produce highly toxic substances such as microcystins (MCs), and water containing MCs is often discharged to downstream and coastal areas. We conducted field monitoring in Isahaya Bay to clarify the short-term dynamics of MCs discharged from a reservoir following a cyanobacteria bloom in the warm season. MCs were detected in the seawater of the bay (max. 0.10μgL-1), and were deposited on the sea floor, with the MC content of the surface sediment increasing by approximately five times (0.11±0.077-0.53±0.15μgkgww-1, mean±SD) at the four stations near the reservoir drainage gate before and after the discharge. The MCs was then transported from the mouth of the bay by tidal currents during the period of the study. Therefore, the MCs were moved away from the closed water area where the cyanobacteria blooms, and spread throughout the coastal area.

元の言語英語
ページ(範囲)73-79
ページ数7
ジャーナルMarine Pollution Bulletin
92
発行部数1-2
DOI
出版物ステータス出版済み - 3 15 2015

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cyanobacterial toxins
microcystins
toxin
cyanobacterium
Japan
algal bloom
toxic substance
Cyanobacteria
tidal current
Seawater
Drainage
Water
Sediments
seafloor
drainage
seawater
water
Monitoring
monitoring
sediment

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

これを引用

Short-term dynamics of cyanobacterial toxins (microcystins) following a discharge from a coastal reservoir in Isahaya Bay, Japan. / Umehara, Akira; Komorita, Tomohiro; Tai, Akira; Takahashi, Tohru; Orita, Ryo; Tsutsumi, Hiroaki.

:: Marine Pollution Bulletin, 巻 92, 番号 1-2, 15.03.2015, p. 73-79.

研究成果: ジャーナルへの寄稿記事

Umehara, Akira ; Komorita, Tomohiro ; Tai, Akira ; Takahashi, Tohru ; Orita, Ryo ; Tsutsumi, Hiroaki. / Short-term dynamics of cyanobacterial toxins (microcystins) following a discharge from a coastal reservoir in Isahaya Bay, Japan. :: Marine Pollution Bulletin. 2015 ; 巻 92, 番号 1-2. pp. 73-79.
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abstract = "Freshwater cyanobacteria produce highly toxic substances such as microcystins (MCs), and water containing MCs is often discharged to downstream and coastal areas. We conducted field monitoring in Isahaya Bay to clarify the short-term dynamics of MCs discharged from a reservoir following a cyanobacteria bloom in the warm season. MCs were detected in the seawater of the bay (max. 0.10μgL-1), and were deposited on the sea floor, with the MC content of the surface sediment increasing by approximately five times (0.11±0.077-0.53±0.15μgkgww-1, mean±SD) at the four stations near the reservoir drainage gate before and after the discharge. The MCs was then transported from the mouth of the bay by tidal currents during the period of the study. Therefore, the MCs were moved away from the closed water area where the cyanobacteria blooms, and spread throughout the coastal area.",
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