Environmental and vegetation controls on the spatial variability of CH₄ emission from wet-sedge and tussock tundra ecosystems in the Arctic.

The influence of water table depth on CO2 fluxes There was a marginally significant trend for net ecosystem exchange (NEE) to be more negative (i.e., more net ecosystem CO 2 uptake) in wet sites (-0.08 g C CO 2 m −2 h −1 ± 0.1 s.e., n = 51) compared to dry sites (−0.05 g C CO 2 m −2 h −1 ± 0.01 s.e., n = 36; Wald test, n = 87, F1,67 = 3.552, p = 0.0638; Fig. 3b ).

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