Do consecutive watering events improve lignum condition and response to environmental water?
Lignum condition at Bottle Bend Reserve, NSW
F.Freestone@latrobe.edu.au and Cherie.Campbell@latrobe.edu.au
New South Wales Office of Environment and Heritage
The project is being undertaken as a collaboration between NSW Office of Environment and Heritage and MDFRC.
The purpose of this project is to investigate the response of Lignum condition to delivery of consecutive environmental flows at Bottle Bend Reserve, NSW.
Tangled Lignum (Duma florulenta (Meisn.) T. M. Schust; formerly known as Muehlenbeckia florulenta Meisn.), hereafter referred to as Lignum, is a shrub that dominates large areas of arid floodplain in Australia and provides important structural habitat for birds, fish and other wildlife. Lignum condition is strongly affected by soil moisture and is highly dependent on flooding regimes. Therefore, changes in flooding regimes, particularly in the Murray–Darling Basin, threaten the survival of Lignum plants. The delivery of environmental water can assist in helping to restore the condition of these important floodplain plants and their associated communities. Understanding how and when to deliver environmental water to optimise Lignum condition is important for their ongoing survival.
The purpose of this project is to investigate the response of Lignum to consecutive environmental flows at Bottle Bend Reserve. The condition of Lignum will be compared across four watering regimes:
i) three consecutive environmental flows
ii) two consecutive environmental flows
iii) one environmental flow
iv) long-dry (not inundated for >20 years)
Lignum condition will also be assessed over time, including prior to and following environmental flows and across seasons.
This project will improve our understanding of;
Ultimately, this project will help to determine the effect of multiple, consecutive environmental flows on the condition and response of Lignum. This information will help progress our ability to manage floodplain landscapes for the purpose of improving the condition of Lignum communities.