Login | Request Account (DAF staff only)

Using wetland processes to enhance nitrogen removal in farming landscapes

Share this record

Add to FacebookAdd to LinkedinAdd to XAdd to WechatAdd to Microsoft_teamsAdd to WhatsappAdd to Any

Export this record

Wegscheidl, C. (2022) Using wetland processes to enhance nitrogen removal in farming landscapes. In: TropAg 2022 International Agriculture Conference, 31 October - 2 November 2022, Brisbane, Australia.

Full text not currently attached. Access may be available via the Publisher's website or OpenAccess link.


Losses of nitrogen from intensive agricultural production areas can lead to elevated nitrogen in downstream aquatic ecosystems, with associated impacts on their health and function. Nitrogen has been identified as a threat to the health and resilience of the Great Barrier Reef, with a target of 70% reduction in end-ofcatchment anthropogenic dissolved inorganic nitrogen loads in some catchments flowing to the Great Barrier Reef. This presentation will reveal how wetlands and wetland processes can be used, as part of a whole-ofsystem approach, to tackle the challenge of reducing nitrogen entering the Great Barrier Reef.
Recent Queensland studies identified denitrification as the key nitrogen removal processes in wetlands. The amount of nitrogen removed through denitrification, and the features required to maximise denitrification, will be explained. Treatment wetlands and denitrifying bioreactors have been trialled in Queensland to reduce nitrogen in run-off and shallow groundwater. The nitrogen removal performance and costeffectiveness of these systems will be discussed.
The presentation will explain the conditions required for cost-effective nitrogen removal and show how site selection, design and management is critical. It proposes a whole-of-system, ’treatment train’ approach to reduce nitrogen loads in agricultural catchments, building upon and complementing best practice agronomic management using treatment systems and wetlands at different scales in the landscape. Replicating and returning natural wetland processes to catchments can sustain agricultural production, improve water quality and the health of aquatic ecosystems, providing multiple benefits.

Item Type:Conference or Workshop Item (Paper)
Business groups:Agriculture
Subjects:Agriculture > Agriculture (General) > Special aspects of agriculture as a whole > Sustainable agriculture
Agriculture > Agriculture (General) > Agriculture and the environment
Agriculture > Agriculture (General) > Soils. Soil science > Soil chemistry
Agriculture > Agriculture (General) > Soils. Soil science > Soil and crops. Soil-plant relationships. Soil productivity
Agriculture > Agriculture (General) > Improvement, reclamation, fertilisation, irrigation etc., of lands (Melioration)
Agriculture > Agriculture (General) > Soil conservation and protection
Agriculture > Agriculture (General) > Fertilisers
Aquaculture and Fisheries > Fisheries > By region or country > Australia > Great Barrier Reef
Agriculture > By region or country > Australia
Agriculture > By region or country > Australia > Queensland
Live Archive:13 Feb 2023 02:21
Last Modified:13 Feb 2023 02:21

Repository Staff Only: item control page