Files and links (2)
Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Net Drawdown of Greenhouse Gases (CO2, CH4 and N2O) by a Temperate Australian Seagrass Meadow
Estuaries and Coasts, Vol.45, pp.2026-2039
11/2022
Metrics
1 File views/ downloads
42 Record Views
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Abstract
Seagrasses have some of the highest rates of carbon burial on the planet and have therefore been highlighted as ecosystems for nature-based climate change mitigation. However, information is still needed on the net radiative forcing benefit of seagrasses inclusive of their associated greenhouse gas (GHG) emissions. Here, we report simultaneous estimates of seagrass-associated carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) air-water emissions. Applying in situ sampling within a south-east Australian seagrass ecosystem, this study finds atmospheric GHG emissions from waters above seagrasses to range from - 480 +/- 15.96 to - 16.2 +/- 8.32 mg CO2-equivalents m(2) d(-1) (net uptake), with large temporal and spatial variability. Using a combination of gas specific mass balance equations, dissolved stable carbon isotope values (delta C-13) and in situ time-series data, CO2-e flux is estimated at - 21.74 mg m(2) d(-1). We find that the net release of CH4 (0.44 mu mol m(2) h(-1)) and net uptake of N2O (- 0.06 mu mol m(2) h(-1)) effectively negated each other at 16.12 and - 16.13 mg CO2-e m(2) d(-1), respectively. The results of this study indicate that temperate Australian seagrasses may function as net sinks of atmospheric CO2-e. These results contribute towards filling key emission accounting gaps both in the Australian region, and through the simultaneous measurement of the three key greenhouse gas species.
Details
- Title
- Net Drawdown of Greenhouse Gases (CO2, CH4 and N2O) by a Temperate Australian Seagrass Meadow
- Creators
- Quinn R Ollivier - Deakin UniversityDamien T Maher - Southern Cross UniversityChris Pitfield - Corangamite Catchment Management AuthorityPeter Macreadie - Deakin University
- Publication Details
- Estuaries and Coasts, Vol.45, pp.2026-2039
- Publisher
- Springer New York LLC
- Number of pages
- 14
- Grant note
- LP160100242; DE150100581 / Australian Research Council; Australian Research Council Deakin University's Centre for Integrative Ecology and Department of Life and Environmental Sciences
- Identifiers
- 991013007198002368
- Copyright
- © The Author(s) 2022 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Academic Unit
- Faculty of Science and Engineering; School of Environment, Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article