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Supporting information: Controls on methylmercury concentrations in lakes and streams of peatland-rich catchments along a 1700 km permafrost gradient
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Supporting information: "Controls on methylmercury concentrations in lakes and streams of peatland-rich catchments along a 1700 km permafrost gradient."
Figure S1: Satellite imagery, hydrographs, and flowpaths of study regions; Figure S2: Regression of unfiltered MeHg and SUVA254; Figure S3: Principal component analysis of dissolved organic matter quality variables; Figure S4: Components identified by parallel factor analysis for measured excitation-emission spectra from the sampling sites; Figure S5: Regression of unfiltered MeHg and ratio of hgcA to 16S rRNA with groundwater indicators; Figure S6: Regression of merA with merB, and unfiltered MeHg with merB; Figure S7: Heat maps of water chemistry against identified clades with HgII methylating (hgcA), reducing (merA), and MeHg demethylating (merB) genes in lake sediments; Table S1. perANOVA analysis of Fe, pH, DOC, S, and EC separated by waterbody type and region; Table S2. perANOVA analysis of THg, MeHg, %MeHg separated by waterbody type and region; Table S3. Spectral composition of the five fluorescence compounds identified using parallel factor analysis; Table S4. perANOVA analysis on proportion of hgcA and merA to housekeeping gene 16S rRNA, separated by permafrost extent; Table S5. perMANOVA analysis on gene diversity in lake sediments, separated by permafrost extent; supporting data.
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- Date created
- 2022-12-05
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- Subjects / Keywords
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- Type of Item
- Research Material