During 1970-2001, several ecological changes were documented in the Lake
Kinneret Ecosystem: Decline of total Nitrogen (TN) and increase of total
Phosphorus (TP) loads with a corresponding decline of TN/TP ratio. The
phytoplankton assemblages indicated consequence Increase of Cyanobacteria
accompanied by elevation of the biomass of Chlorophyta and Diatoms. The
Kinneret ecosystem functioning represented two superimposed events: the decline
of TN enhanced Cyanobacteria and elevation of TP that was reflected by an
increase of Chloropytes and Diatoms. Removal of Nitrogen was achieved but P
load remained high enough to enhance Chlorophyta and Diatoms. Consequently, a
top priority of future management perspective should be reduction of Phosphorus
inputs.
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