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Global methane emissions from rivers and streams

Environmental Studies and Forestry

Global methane emissions from rivers and streams

G. Rocher-ros, E. H. Stanley, et al.

Discover groundbreaking research on methane emissions from rivers and streams, revealing an estimated 27.9 Tg CH₄ per year. Conducted by a team of experts including Gerard Rocher-Ros and Emily H. Stanley, this study uncovers the significant influence of environmental factors across various regions, emphasizing the complex interplay between land and water in regulating greenhouse gases.

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Playback language: English
Abstract
Methane (CH₄) is a potent greenhouse gas, and its atmospheric concentrations have tripled since the industrial revolution. This study presents a spatially explicit global estimate of CH₄ emissions from rivers and streams, totaling 27.9 (16.7–39.7) Tg CH₄ per year. Riverine CH₄ emissions show a weak temperature dependence, unlike lakes and wetlands. High emissions are observed in tropical and high-latitude regions, driven by factors such as organic matter supply, water saturation, and anoxic conditions in and near fluvial habitats. The study highlights the importance of land-water connections in regulating CH₄ emissions and the vulnerability of these emissions to climate change responses and human modifications.
Publisher
Nature
Published On
Sep 21, 2023
Authors
Gerard Rocher-Ros, Emily H. Stanley, Luke C. Loken, Nora J. Casson, Peter A. Raymond, Shaoda Liu, Giuseppe Amatulli, Ryan A. Sponseller
Tags
methane emissions
greenhouse gases
environmental factors
riverine habitats
climate change
organic matter
spatial estimates

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