Table 3: Photosynthetically active radiation (PAR) measurements in the field during partial-sun to full-sun conditions and in laboratory culture columns. Treatments refer to tall (9.5 d × 125 h cm) and short (9.5 d × 15 h cm) column dimensions. Columns in the 2005 lab treatment measured 8 d × 15 h cm. PAR units are 𝜇 mol s−1m−2.

LocationYear/treatmentDepth (m)Range PARAvg. PAR ± 1SE (n)

Field20070.011898–1950 1 9 2 4 ± 2 6 ( 2 )
Field20071860–1050 9 5 5 ± 9 5 ( 2 )
Field20075390–650 5 2 0 ± 1 3 0 ( 2 )
Field200710175–335 2 5 5 ± 8 0 ( 2 )
Field20071575–198 1 3 7 ± 6 2 ( 2 )
Field20072040–116 7 8 ± 3 8 ( 2 )
Lab2007/tall0.01287–292 2 8 9 ± 2 ( 3 )
Lab2007/tall0.25231–234 2 3 3 ± 1 ( 3 )
Lab2007/tall0.50150–154 1 5 2 ± 1 ( 3 )
Lab2007/tall0.7588–93 9 0 ± 2 ( 3 )
Lab2007/tall160–64 6 2 ± 1 ( 3 )
Lab2007/short0.01242–298 2 7 0 ± 2 8 ( 2 )
Lab20050.0151–144 8 7 ± 1 2 ( 1 0 )