TY - JOUR
T1 - Short-term dynamics of cyanobacterial toxins (microcystins) following a discharge from a coastal reservoir in Isahaya Bay, Japan
AU - Umehara, Akira
AU - Komorita, Tomohiro
AU - Tai, Akira
AU - Takahashi, Tohru
AU - Orita, Ryo
AU - Tsutsumi, Hiroaki
N1 - Funding Information:
We would like to express our thanks to the Mr. Hidenori Matsunaga for piloting the boat, and Ms. Miharu Takada, Mr. Ryunosuke Nomura, Ms. Mari Matsumoto, Ms. Risa Takenaka, Mr. Masaru Tasaki, Ms. Yui Nakano, Ms. Yui Hashiguchi, Ms. Shiho Muranaka, Mr. Akihiro Hisano for their assistance in the field survey. We acknowledge Dr. Shigeru Montani, Dr. Minoru Koga, and Dr. Richard Lavin for their critical reading of the manuscript and valuable comments. This work was supported by the Sasagawa Scientific Research Grant from The Japan Science Society (No. 24-718), the Mitsui & Co., Ltd. Environment Fund (the representative; Hiroaki Tsutsumi, No. R09-B118), the Japan Society for the Promotion of Science (the representative; Hiroaki Tsutsumi and Tohru Takahashi, Nos. 25281031 and 25340065, respectively).
Publisher Copyright:
© 2015 Elsevier Ltd.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2015/3/15
Y1 - 2015/3/15
N2 - 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.
AB - 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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U2 - 10.1016/j.marpolbul.2014.12.053
DO - 10.1016/j.marpolbul.2014.12.053
M3 - Article
C2 - 25595488
AN - SCOPUS:84925355872
VL - 92
SP - 73
EP - 79
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 1-2
ER -