Responses of grasses to experimental submergence in summer: implications for the management of unseasonal flows in regulated rivers
Lyndsey M Vivian, Joe Greet, Christopher S Jones
AQUATIC ECOLOGY | SPRINGER | Published : 2020
River regulation has altered the seasonal timing of flows in many rivers worldwide, impacting the survival and growth of riparian plants. In south-eastern Australia, demand for irrigation water in summer often results in high river flows during a season that would naturally experience low flows. Although unseasonal high summer flows are thought to significantly impact waterways, their effects on vegetation are poorly quantified. We investigated the responses of five grass species commonly occurring in riparian zones to different durations of submergence in summer. We experimentally tested the response of three exotic and two native grasses to four submergence treatments (4 weeks, 8 weeks, 2-..View full abstract
We thank Scott McKendrick, Bryan Mole and Marjorie Pereira for assistance with data collection; and the assistance of Burnley nursery staff Nicholas Osborne, Sascha Andrusiak and Rowan Berry. We also thank Vanja Kitanovic for seed collection and plant potting. We gratefully acknowledge Andrew Boulton, Andrew Bennett, Jemma Cripps, Geoff Sutter, Sally Kenny and two anonymous reviewers for feedback on earlier versions of the manuscript, and Ben Fanson for advice on data analyses. This work was funded by the Victorian Government through the Victorian Environmental Flows Monitoring and Assessment Program. The production of this paper was supported by the Applied Aquatic Ecology writing retreat, which in turn was supported by the Capability Fund of the Arthur Rylah Institute.