Journal article
Carbon Budget for a Large Drowned River Valley Estuary Adjacent to an Emerging Megacity (Sydney Harbour)
Journal of Geophysical Research: Biogeosciences , Vol.125(1), pp.1-20
01/2020
Metrics
1 File views/ downloads
11 Record Views
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Abstract
Annual organic and inorganic carbon budgets were constructed for the Sydney Harbour Estuary. Net ecosystem metabolism was the main control on carbon fluxes in the system. Sydney Harbour Estuary was slightly net heterotrophic, which is consistent with a small CO2 emission of 0.8 × 108 mol C yr−1. Terrestrial carbon loads were 70% dissolved inorganic carbon, 21% dissolved organic carbon, and 9% particulate organic carbon. Dissolved inorganic carbon was exported to the ocean (4.19 × 108 mol C yr−1), and an import of organic carbon (1.92 × 108 mol C yr−1) from the ocean was required to balance the budget. Sydney Harbour had high sediment organic carbon burial rates similar to other river valley estuaries including the Hudson River and Chesapeake Bay. Productivity was the main sink of inorganic carbon followed by sediment burial, emissions of CO2 to the atmosphere, and oyster sequestration. This study highlights the importance of determining the sources, sinks, and transformations of all carbon forms in constructing estuarine budgets.
Key Points
The Sydney Harbour Estuary was slightly heterotrophic with net ecosystem metabolism the main control of carbon fluxes in the system
Over an annual cycle the estuary was a net exporter of dissolved inorganic carbon and importer of organic carbon
The study highlights the importance of determining sources, sinks, and transformations of all carbon forms to construct estuarine budgets
Details
- Title
- Carbon Budget for a Large Drowned River Valley Estuary Adjacent to an Emerging Megacity (Sydney Harbour)
- Creators
- E. L Tanner - The University of SydneyB. D Eyre - Southern Cross University
- Publication Details
- Journal of Geophysical Research: Biogeosciences , Vol.125(1), pp.1-20
- Publisher
- Wiley-Blackwell Publishing, Inc.
- Number of pages
- 20
- Grant note
- University of Sydney Post Graduate Award scheme Department of Education and Training | Australian Research Council (ARC) (ARC LP150100519) New South Wales Department of Industry | NSW Department of Primary Industries (DPI) (DP160100248)
- Identifiers
- 991012926980502368
- Copyright
- © 2019. American Geophysical Union. All Rights Reserved.
- Academic Unit
- Faculty of Science and Engineering; Centre for Coastal Biogeochemistry; Science
- Language
- English
- Resource Type
- Journal article