Nevertheless, as we have shown, the overall
annual patterns of phytoplankton development in Lake Kinneret, which have
been essentially unchanged since the 1970s (Berman et al, 1995), have shifted
radically since early 1994. In particular, the bloom of the potentially toxic
cyanobacterium A.ovalisporum in 1994 and its continued presence, even in
diminished numbers, in the lake in 1995 (and subsequent years; data not shown)
cannot be viewed with complacency..There is an urgent need for better understanding
of the factors which led to the bloom of A.ovalisporum in the fall of 1994
in this lake and to its continued presence.