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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
High carbon dioxide emissions from Australian estuaries driven by geomorphology and climate
Nature communications, Vol.15, 3967
10/05/2024
PMID: 38730255
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Abstract
Estuaries play an important role in connecting the global carbon cycle across the land-to-ocean continuum, but little is known about Australia’s contribution to global CO2 emissions. Here we present an Australia-wide assessment, based on CO2 concentrations for 47 estuaries upscaled to 971 assessed Australian estuaries. We estimate total mean (±SE) estuary CO2 emissions of 8.67 ± 0.54 Tg CO2-C yr−1, with tidal systems, lagoons, and small deltas contributing 94.4%, 3.1%, and 2.5%, respectively. Although higher disturbance increased water-air CO2 fluxes, its effect on total Australian estuarine CO2 emissions was small due to the large surface areas of low and moderately disturbed tidal systems. Mean water-air CO2 fluxes from Australian small deltas and tidal systems were higher than from global estuaries because of the dominance of macrotidal subtropical and tropical systems in Australia, which have higher emissions due to lateral inputs. We suggest that global estuarine CO2 emissions should be upscaled based on geomorphology, but should also consider land-use disturbance, and climate.
Details
- Title
- High carbon dioxide emissions from Australian estuaries driven by geomorphology and climate
- Creators
- Jacob Z.Q. Yeo (Corresponding Author) - Southern Cross University, Faculty of Science and EngineeringJudith A Rosentreter - Southern Cross University, Faculty of Science and EngineeringJoanne Oakes - Southern Cross University, ScienceKai G Schulz - Southern Cross University, ScienceBradley D Eyre - Southern Cross University, Science
- Publication Details
- Nature communications, Vol.15, 3967
- Publisher
- Nature Publishing Group
- Grants
- Drivers of greenhouse gas emissions in estuaries, LP150100519, Australian Research Council
- Grant note
- This research was funded by Australian Research Council grants DP160100248 (BDE) and LP150100519 (BDE)
- Identifiers
- 991013188713802368
- Copyright
- © The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License.
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article