Agmon is a small, shallow man-made lake (area: 1.1 km2; mean
depth 0.45 m), excavated in the peat soils of the Hula Valley in northern Israel,
that was filled with water in August 1994. We followed the seasonal variations in phytoplankton and
metaphyton biomass, primary production and related environmental conditions between December
1995 and July 1997. Water temperature ranged between 9.5°C -30.8°C; pH ranged between 7.2-8.6. The algae in Lake Agmon were characterized by
seasonal alterations between summer-fall phytoplankton blooms and spring
proliferation of benthic algal mats, with a winter clear-water phase.
Chlorophyll a content in the water,
as a measure of planktonic algal biomass, was low in winter (1.75 - 5μg·L-1) and high in summer (>100μg·L-1
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