High Methane Emission From Palm Stems and Nitrous Oxide Emission From the Soil in a Peruvian Amazon Peat Swamp Forest

Tree stems in tropical peat swamp forests are known as considerable methane (CH 4 ) emitters; however, little is about their carbon dioxide (CO 2 and nitrous oxide (N O) exchange. Differences between species, especially the role of palm exchange greenhouse gasses, have remained largely unknown. We measured stem CO , CH N O fluxes from different heights widely spread aguaje palms ( Mauritia flexuosa boarwoods Symphonia globulifera soil beneath same trees a Peruvian Amazon using static closed chamber technique September 2019 to March 2020. The tree were net emitters but occasionally showed low uptake. found highest emissions (average ± SE) height 80 cm (1,601 165.9 μg C m –2 h –1 ), which more than 300 times greater compared boarwood stems, at 30 (5.12 1.27 ). average flux was 3,618 465 . Whereas negligible, soils relatively high, ranging 53.75 24.04 (close trees) 143.4 68.43 palms) While roughly upscaling tree-level stand level 27,732 km Pastaza-Marañon foreland basin, these annual (897 Gg y 24 respectively). These results highlight necessity study this kind ecosystem intensely.