English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

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

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