Chlorophyll
During the summer-fall months, the concentrations of chlorophyll in Lake
Kinneret usually showed little variability (multi-year, 1970-1993 average, August
through November; 6.7 ± 1.8 u.g chlorophyll H). In 1994, chlorophyll concentrations
were highest (35-70 u,g Chi I"1
) from February through June during the
exceptionally dense dinoflagellate bloom, then decreased by August to -7.0 ug
Chi I"1
.
In Figure 3, we show the changes which occurred in the standing stock of
chlorophyll from August through November 1994. The chlorophyll concentrations
throughout August were similar to those in the previous year (5.8 ug Chi
I"1
) and to the multi-year monthly average (6.7 ug Chi I"1
). By 12 September 1994,
chlorophyll in the epilimnion had risen, to 8.2 u,g Chi I"1
, and was evenly distributed
with depth throughout the photic zone (upper 15 m) (Figure 2).