1988 Fresh Water 1989 Fresh Water 1990 Fresh Water 1992 Fresh Water
1989 Fresh Water
1990 Fresh Water
1992 Fresh Water
1987 Fresh Water
1971 1972 1973 1974 1975 1976 1977 1987 1988 1989 1990 1992 1999 2000 2002
1972
1973
1974
1975
1976
1977
1987
1988
1989
1990
1992
1999
2000
2002
1977 Fresh Water 1978 Fresh Water 1979 Fresh Water
1978 Fresh Water
1979 Fresh Water
2003 Fresh Water 2004 Fresh Water 2005 Fresh Water
2004 Fresh Water
2005 Fresh Water
2003 Fresh Water 2004 Fresh Water
2003 2004 2005
2004
2005
2001 2003 2004 2005
2003
2003 2004
2002 2004
1979
1988 1989 1990 1991 1992 2002
1991
1988 Fresh Water 1989 Fresh Water 1989 Plant Tissue 1989 Sediment Chemistry 1990 Plant Tissue 1992 Fresh Water 1999 Fresh Water 2000 Fresh Water
1989 Plant Tissue
1989 Sediment Chemistry
1990 Plant Tissue
1999 Fresh Water
2000 Fresh Water
1988 Fresh Water 1988 Sediment Chemistry 1989 Fresh Water 1989 Plant Tissue 1989 Sediment Chemistry 1990 Fresh Water 1990 Sediment Chemistry 1991 Fresh Water 1992 Fresh Water 1999 Fresh Water 2000 Fresh Water
1988 Sediment Chemistry
1990 Sediment Chemistry
1991 Fresh Water
1988 Fresh Water 1989 Fresh Water 1990 Fresh Water 1990 Plant Tissue 1992 Fresh Water
1979 2002
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1988 1989 1990 1991 1992 1999 2000 2002
1978
1980
1981
1982
1983
1971 1972 1973 1974 1975 1976 1977 1978 1979 1981 1988 1989 1990 1992 1999 2000 2002
1971 1972 1973 1974 1975 1976 1977 1978 1980 1981 1982 1988 1989 1990 1991 1992 1999 2000 2002
1988 Fresh Water 1989 Fresh Water 1989 Plant Tissue 1990 Fresh Water 1990 Plant Tissue 1992 Fresh Water
1974 1975 1976 1977 1978 1979
1980 1987
1971 1972 1973 1974 1975 1976 1977 1978 1980 1981 1982 1987 1988 1989 1990 1991 1992 1999 2000 2002
1971
1974 Fresh Water 1975 Fresh Water 1976 Fresh Water 1977 Fresh Water 1978 Fresh Water 1979 Fresh Water 1979 Sediment Chemistry 1980 Fresh Water 1987 Fresh Water
1974 Fresh Water
1975 Fresh Water
1976 Fresh Water
1977 Fresh Water
1979 Sediment Chemistry
1980 Fresh Water
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1987 1991 1999 2000 2002
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1988 1988 1989 1990 1991 1992 1999 2000
1989 2002
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1985 1988 1989 1990 1991 1992 1999 2000 2002
1985
1974 1975 1976 1977 1978 1979 1981
1974 Fresh Water 1975 Fresh Water 1976 Fresh Water 1977 Fresh Water 1978 Fresh Water 1979 Fresh Water 1979 Sediment Chemistry 1981 Fresh Water
1981 Fresh Water
1971 1972 1973 1974 1975 1976 1977 1978 1980 1981 1985 1988 1989 1990 1991 1992 1999 2000 2002
2002 2003 2004