Boreal conifer swamp carbon stocks and fluxes, Alberta, Canada

The carbon (C) dynamics of boreal coniferous swamps are a largely understudied component of wetland carbon cycling. We investigated the above- and below-ground carbon stocks and growing season carbon dioxide (CO2) and methane (CH4) fluxes from a representative boreal coniferous swamp in northern Alberta, Canada in 2022. Tree inventories, understory vegetation biomass, and peat cores were collected across three sub-sites within the broader swamp, with gas flux collars placed in the dominant plant communities present. Alongside the C flux measurements, environmental variables such as water table depth, soil temperature, and growing season understory green leaf phenology were measured. Our results show that these boreal coniferous swamps store large volumes of organic C in their biomass and soil (134 kg C m-2), comparable with other wetland and forest types, although 95% of the total C stock at our site was within the soil organic carbon. We also found that understory CO2 and CH4 fluxes in..., , , # Boreal conifer swamp carbon stocks and fluxes, Alberta, Canada

Dataset DOI: [10.5061/dryad.dv41ns267](https://doi.org/10.5061/dryad.dv41ns267)

## Description of the data and file structure

This dataset contains field measurements and laboratory analyses from **Heaven Swamp**, a boreal coniferous swamp in northern Alberta, Canada (56°57′28″N, 111°33′24″W). Data were collected during the 2022 growing season to quantify vegetation composition, tree biomass, peat characteristics, and greenhouse gas (CO₂ and CH₄) fluxes.

**Study design**

* Three 10 × 10 m plots (HS-1, HS-2, HS-3).
* Measurements collected from vegetation plots, tree measurements, soil/peat cores, and gas flux collars installed in two dominant vegetation communities (feather moss and Sphagnum)

### Files and variables

#### File: Davidson_et_al_boreal_swamp_carbon_clean.xlsx

**Description:** 

##### Variables

| Sheet | Column | Description ...,