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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Letter/Communication
Enhanced stream greenhouse gas emissions at night and during flood events
Limnology and oceanography letters, Vol.9(3), pp.276-285
06/2024
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Source: InCites
Abstract
Headwater streams play a large role in aquatic greenhouse gas emissions. Carbon dioxide (CO 2 ) and dissolved oxygen in streams often undergo changes through diel cycles. However, methane (CH 4 ) and nitrous oxide (N 2 O) have unknown diel dynamics. Here, we reveal consistent patterns in CO 2 , CH 4 , and N 2 O over diel cycles and during flood events using high‐frequency continuous observations in a subtropical headwater stream. Diel cycles were most pronounced during baseflow. Increased nighttime discharge due to higher groundwater inputs enhanced gas transfer velocities and concentrations. Overall nocturnal emissions were 31%, 68%, and 32% greater than daytime for CO 2 , CH 4 , and N 2 O, respectively. Floods dampened diel signals. If both flood events and diel patterns are neglected, estimates of greenhouse gas emissions from headwaters may be greatly underestimated. Overall, CH 4 and N 2 O emissions from headwater streams may be underestimated by ~ 20–40% due to a lack of observations during nighttime, floods, and in warmer climates.
Details
- Title
- Enhanced stream greenhouse gas emissions at night and during flood events
- Creators
- Rebecca L. Woodrow - Southern Cross UniversityShane A. White - Southern Cross UniversityStephen R. Conrad - Southern Cross UniversityPraktan D. Wadnerkar - Southern Cross UniversityGerard Rocher-Ros - Swedish University of Agricultural SciencesChristian J. Sanders - Southern Cross UniversityCeylena J. Holloway - Southern Cross UniversityIsaac R. Santos - Southern Cross University
- Publication Details
- Limnology and oceanography letters, Vol.9(3), pp.276-285
- Publisher
- Wiley
- Grants
- Unravelling the legacy of groundwater pollution to coastal waters, FT170100327, Australian Research Council
- Grant note
- Australian Research Council. Grant Numbers: FT170100327, LE170100007
- Identifiers
- 991013165413102368
- Copyright
- © 2024 The Authors. Limnology and Oceanography Letters published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography. This is an open access article under the terms of the Creative Commons Attribution License. Open access publishing facilitated by Southern Cross University, as part of the Wiley - Southern Cross University agreement via the Council of Australian University Librarians.
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre
- Language
- English
- Resource Type
- Letter/Communication