Dissolved Organic Matter Composition and Environmental Characteristics of Lakes Across a Permafrost Gradient, Northwest Territories, Canada

The dataset includes lake water chemistry, shoreline porewater chemistry, stable carbon isotopes (δ¹³C), radiocarbon measurements (Δ¹⁴C), watershed and landscape attributes, and molecular formula assignments generated using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS).

Molecular data include assigned formulas and intensity-normalized abundance profiles for each sample. All variables required to reproduce the analyses in the associated manuscript are provided. This dataset supports the manuscript “Terrestrial inputs and in-lake processes shape dissolved organic matter along a permafrost gradient”