Geoscience Reference
In-Depth Information
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Figure 3.10. A typical response for freshwater DOM (Island Lake at Toolik Lake LTER) during short-
term photochemical degradation highlighting a decrease in total fluorescence, a decrease in humic-
like fluorophores (SQ1 and SQ2) and little change or a small increase in protein-like fluorophores
(Tyr and Trp). (Reproduced from Cory et al.,
2007
, with permission of American Geophysical Union
in the format Republish in topic and “other” book via Copyright Clearance Center.)
fluorescence EEMs has been correlated with DOC in rainwater, with higher DOC concen-
trations resulting in an increased fluorescence signal of rainwater (
r
= 0.699,
p
< 0.001),
for rainwater collected in southeastern North Carolina (USA), indicating that fluorescent
DOM is a common component of the DOC pool at that location (Kieber et al.,
2006
).
