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.
| Original language | English |
|---|---|
| Pages (from-to) | 73-79 |
| Number of pages | 7 |
| Journal | Marine Pollution Bulletin |
| Volume | 92 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Mar 15 2015 |
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All Science Journal Classification (ASJC) codes
- Oceanography
- Aquatic Science
- Pollution
Cite this
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.
In: Marine Pollution Bulletin, Vol. 92, No. 1-2, 15.03.2015, p. 73-79.Research output: Contribution to journal › Article
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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
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
VL - 92
SP - 73
EP - 79
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 1-2
ER -