Stream 1: Environment
- Naomi S. Wells1, Xiaoguang Ouyang,2, Damien T. Maher1, Matthew Hipsey3
- 1Southern Cross University, Australia
- 2Griffith University, Australia
- 3University of Western Australia, Australia
Estuaries and coastal waters play a critical role in regulating the downstream transfer of terrestrial nutrients and storing carbon (‘blue carbon’), with potentially complex effects on global greenhouse gas emissions. Available data shows that these systems can act as both sources and sinks of methane, carbon dioxide, and nitrous oxide. However, the direction, magnitude, and drivers of these fluxes are unresolved. This knowledge gap is exacerbated by on-going land-use intensification and climate change causing increases in erosion, dredging, draining, damming, extreme weather events, wastewater discharge, aquaculture, and habitat transformations that potentially alter carbon and nutrient cycling in these systems.
This session aims to resolve some of these uncertainties by bringing together scientists from a range of disciplines to tackle how physical, biological, and hydrological factors combine to regulate greenhouse gas emissions from estuaries and coasts. Potential topics include, but are not limited to: redox-driven benthic gas production, importance of spatial and temporal variability of concentration and exchange rates, groundwater/porewater inputs, microbubble formations, and linking nutrient cycling to gas emissions. We particularly encourage talks seeking to upscale fluxes and/or identify functional drivers, and that incorporate innovative methods (e.g., computational modelling, microbial profiling, isotopic techniques).