Occurrence dates and locations of "Cochlo" along the Tsushima Current in 2002
iPlease click a distribution map to get largerj
Expansion of "Cochlo" red tides
Japan:
Several red tide cases of "Cochlo" occurred from spring to autumn
in 2002, starting from Kyushu area and spreading to the north. Plotting
each case on a map and analyzing relationship between location and date,
it became obvious that there was a pattern which "Cochlo" expanded
distribution by an ocean current form southwest to northeast.
Occurrence dates and locations of "Cochlo" along the Tsushima
Current in 2002
iPlease click a distribution map to get largerj
Korea:
There are two assumptions about origin cell of "Cochlo" red tide;
1) germinated cells from cysts in a bottom surface of coastal red tide
occurrence area, and 2) vegetative cells occurring in the open sea in the
south of Korea in June.
Red tide of "Cochlo" occurred at first at the southern coast
of Korea, and gradually expanded its distribution to the eastern coast
by water current. The following two pictures show the pattern in 2001 and
2002. Please click following pictures to start animation.
 Daily variations of "Cochlo" blooms in 2001 |
 Daily variations of "Cochlo" blooms in 2002 |
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