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Kenneth Fortino edited ResultsOMMineralization.tex
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\subsection{Sediment Oxygen Demand}
The sediments added to the microcosms in the litter experiment had
an estimated a dry bulk density that ranged between 0.25 to 0.26 g ml\textsuperscript{-1}
thus we added between 25 and
an 26 g dry mass of sediment to the bottles. The organic matter content
of those sediments ranged between 12.7 and
12.9\%. Using this information, we estimate that 12.9\% so the sediments in the mesocosms contained between
3.16 3.18 and
3.33 3.23 g of organic
matter. matter each. The mesocosms that received leaf litter each received between 0.04 and 0.08 additional g of organic matter with the added leaf litter, which would be the
equivelent equivalent of 11.3 to 22.7 g coarse organic matter m\textsuperscript{-2}.
The sediments added to the microcosms in the leached litter experiment had
a dry bulk density between 0.10 and 0.11 g ml\textsuperscript{-1}, which was less than those used in the leaf experiment and likely due to the fact that the sediment slurry was not settled before being added to the microcosm. The organic matter content of the sediments used in the leached litter experiment was nearly identical to those used in the litter experiment and ranged between 12.1 and 12.4\%. As a result the sediments of each microcosm contained between 1.23 and 1.39 g of organic matter. The mesocosms that received leaf litter each received bettween 0.04 and 0.05 g of coarse organic matter with the added litter, which would be the equivalent of 10.8 to 13.5 g of coarse organic matter m\textsuperscript{-2}.
In the lake from which the sediments were collected we measured between 57.3 and 163.0 g coarse organic matter m\textsuperscript{-2}, so the mesocosms used in the experiment contained at most 40\% of the coarse organic matter of the lake. However in the mesocosms all of the leaf litter was added to the surface of the sediments, while a portion of the leaf litter in the lakes was buried within the sediment.