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Chlorophyll
a
(mg m^-3)
Y\M
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sept
Oct
Nov
Dec
1997
-
-
-
-
-
-
-
-
+
+
+
+
1998
+
+
+
+
+
+
+
+
+
+
+
+
1999
+
+
+
+
+
+
+
+
+
+
+
+
2000
+
+
+
+
+
+
+
+
+
+
+
+
2001
+
+
+
+
+
+
+
+
+
+
+
+
2002
+
+
+
+
+
+
+
+
+
+
+
+
2003
+
+
+
+
+
+
+
+
+
+
+
+
2004
+
+
+
+
+
+
+
+
+
+
+
+
2005
+
+
+
+
+
+
+
+
+
+
+
+
2006
+
+
+
+
+
+
+
+
+
+
+
+
2007
+
+
+
+
+
+
+
+
+
+
+
+
2008
-
-
-
+
+
+
-
-
+
+
+
+
2009
+
+
+
+
+
+
+
+
S\Y
winter
spring
summer
fall
1997
-
-
-
+
1998
+
+
+
+
1999
+
+
+
+
2000
+
+
+
+
2001
+
+
+
+
2002
+
+
+
+
2003
+
+
+
+
2004
+
+
+
+
2005
+
+
+
+
2006
+
+
+
+
2007
+
+
+
+
2008
-
-
-
+
2009
+
+
+
Main
Copyright © 2009
Curator:
Violetta Suslina
