Shade treatments were created by covering half of
each aquarium with a neutral density filter (37.6% mean reduction in
PAR). A LICOR scalar (4π) quantum sensor was placed within a light
and shade treatment aquaria at leaf canopy height and photosynthetically
active radiation (PAR) was recorded at 30 minute intervals with a
5 min running average. Average daytime PAR values 24 h prior to sample
collectionwere used to determine recent PAR history for days 1, 7, 14 and
21. Water temperature (°C) in treatment aquaria was monitored with
HOBO® water temp pro data loggers and temperature was recorded at
30 min intervals, with a 1 min running average