Figure 6: A) the ratio of predicted soluble Fe to total Fe and B) the
ratio of predicted soluble Mn to total Mn in the hypolimnion during the
Turnover deployment; C) the ratio of predicted soluble Fe to total Fe
and D) the ratio of predicted soluble Mn to total Mn in the hypolimnion
during the Oxygen On Deployment. Values were smoothed with a 10-hr
moving average to remove noise. The dashed vertical lines represent the
times when reservoir turnover occurred in panels A-B and when the HOx
system was turned on in panels C-D. PLSR predictions that had negative
values were set to zero when calculating ratios and any ratio value that
was greater than 1 was set to 1. Note that the MUX was not collecting
data from 11:00 EDT 31 May 2021 until 14:30 EDT 4 June 2021 due to
technical issues.
Table 1. Summary of PLSR model statistics. n = number of observations.
Tot. = total, Sol. = soluble. Epi = epilimnion, Hypo = hypolimnion. The
hypolimnetic soluble Fe PLSR models from the Turnover Deployment had a
poor model fit due to the extremely low concentration range.