Research Article
Short-Term Photochemical and Biological Unreactivity of Macrophyte-Derived Dissolved Organic Matter in a Subtropical Shallow Lake
Table 1
Limnological and biological characterization of the water in the initial conditions of the experiment.
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Mean air temperature for the 5 days of incubation. 2Mean daily flux of GR during incubation (n = 5); 1 W = 1 J s−1. For all other variables, n = 3. 3Figures in parentheses are ±standard deviations. 4: mean depth (m); AT: air temperature (°C); TS: total solids (mg L−1); Alk: alkalinity (μEq L−1); TN: total nitrogen (μg L−1); TP: total phosphorus (μg L−1); DOC: dissolved organic carbon (mg L−1); Abs430: absorbance at 430 nm; GR: global radiation flux (W m−2); LMW: low-molecular-weight substances (absorbance at 250 nm); HMW: high-molecular-weight substances (absorbance at 365 nm); Abs250 : 365: (ratio of absorbances at 250 and 365 nm); BP: bacterial production (µg C L h−1); BR: bacterial respiration (µg C L h−1); BGE: bacterial growth efficiency. |