significantly influencing water loss in a wetland, highlighting
the fact that the vegetation may mask the effect of different system
designs. In our research, the higher ET values found between June
and September 2012 compared to 2013 were most likely due to
higher air temperatures compared to 2013, which caused different
ET0 and ETc values in both years and which influenced the growth
curve of the two species. If we consider the whole growth season,
A. donax was found to have a higher cumulative ETc than C.
alternifolius for every year of growth. Despite identical growth,
climatic and hydraulic conditions in the system, the greater water
loss which occurred in giant reed-unit was due to greater growth
density of the giant reed and to greater below-water and above water plant part development. Giant reed covered the whole of the
unit without gaps, unlike the umbrella sedge