Table 1 Annual budget of carbon fluxes in the beaver wetland

From: Beavers can convert stream corridors to persistent carbon sinks

C species

C mass (t yr-1)

Dissolved and gaseous C inputs

DIC

311.23 ± 28.24

DOC

23.65 ± 5.01

POC*

29.14 ± 8.25

CO2-Catmosphere

20.54 ± 0.19

Total inputs

384.56 ± 29.85

Dissolved and gaseous C outputs

DIC

189.35 ± 13.96

DOC

15.46 ± 2.53

CO2-Csediment

76.40 ± 9.52

CO2-C water

3.50 ± 0.10

CO2-C deadwood

1.47 ± 0.27

CH4-C total

0.08 ± 0.14

Total outputs

286.26 ± 17.09

Mass balance

98.30 ± 34.39

Cumulative C storages (2010 – 2022)

Sediment TOC

423.60 ± 117.90

Sediment TIC

161.73 ± 78.49

Green biomass TOC†

20.54 ± 0.20

Deadwood biomass TOC

500.40 ± 9.30

Total storage

1106.27 ± 141.94

  1. * Sediment C accumulation from deposition. Storage accumulation due to changes in sediment C content were not considered.
  2. † Instantaneous annual rate, only reflecting green aboveground biomass and not its cumulative C input.
  3. Carbon (C) inputs and outputs of dissolved, particulate, and gaseous C species, compared to annual C storage sediment and biomass, expressed as t C yr-1 ± one standard deviation. The mass balance is delimited to upstream and downstream monitoring locations of the beaver wetland. DIC dissolved inorganic carbon, DOC dissolved organic carbon, POC particulate organic carbon, CO2-C carbon dioxide carbon, and CH4-C methane carbon, TOC total organic carbon, and TIC total inorganic carbon.
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