Supporting information: Controls on methylmercury concentrations in lakes and streams of peatland-rich catchments along a 1700 km permafrost gradient

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 S...

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Bibliographic Details
Main Authors: Lauren M Thompson, McKenzie A Kuhn, Johanna C Winder, Lucas PP Braga, Ryan HS Hutchins, Andrew J Tanentzap, Vincent L St. Louis, David Olefeldt
Format: Other/Unknown Material
Language:English
Published: 2022
Subjects:
Data
Supplemental Information
Mercury
Dissolved organic matter
Surface waters
Soils
Permafrost
permafrost
Online Access:https://era.library.ualberta.ca/items/c7d01a70-0b8f-4fae-bc2d-a570ca413216
https://doi.org/10.7939/r3-z2w3-p617
Description
Summary: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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