Methane emissions from tree stems in neotropical peatlands.

ABSTRACT: Neotropical peatlands emit large amounts of methane (CH₄ ) from the soil surface, but fluxes from tree stems in these ecosystems are unknown. In this study we investigated CH₄ emissions from five tree species in two forest types common to neotropical lowland peatlands in Panama. Methane from tree stems accounted for up to 30% of net ecosystem CH₄ emissions. Peak CH₄ fluxes were greater during the wet season when the water table was high and temperatures were lower. Emissions were greatest from the hardwood tree Campnosperma panamensis, but most species acted as emitters, with emissions declining exponentially with height along the stem for all species. Overall, species identity, stem diameter, water level, soil temperature and soil CH₄

SUBMITTER: Sjogersten S 

PROVIDER: S-EPMC6973267 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature