There are two main vents at Big Perry. The first, at the top of the mound, supports extensive areas of Phragmites. A second lower vent supports Typha. The Phragmites and Typha appeared to be in good condition, with the Phragmites up to 3 metres in height and the Typha up to 2.5 metres. Much of the fenced area is well vegetated, with other common species being Cyperus gymnocaulos, Nitraria sp and samphire species.
The following trials are under consideration:
- Trial burn of Phragmites in the upper vent .
- Trial burn of Typha in the second
The single vent at the Fountain has a cover of Phragmites up to about 3m high around the circumference but much lower (up to about one metre) in the centre of the vent. It appears that the Phragmites may be in a state of slow decline in the vent. The tail at the Fountain is also dominated by Phragmites. This area of reeds has expanded substantially over the last 20 years or so.
A burning trial is planned for the Phragmites within the spring vent. This area is well separated from boundary fencing.
Twelve Mile Spring has multiple vents generally dominated by Phragmites. The top vent is vegetated with Typha, a patch about 8 metres across. The vents have a low but steady flow. Cattle have accessed the fenced area recently and have had noticeable impact on the springs.
The Phragmites spring near the station track is a good candidate for a burning trial – but only after the fence has been repaired and the spring has recovered from stock impacts.
Outside Springs comprise a number of springs with one fenced vent and a second vent immediately alongside open to grazing. The unfenced spring varies in vegetation quality according to grazing levels. On this occasion this spring showed severe impacts, with heavy pugging and very little vegetation.
The fenced spring was observed in 2014 to be showing signs of reduced Phragmites dominance. There is now an area of open water, about 10 metres in diameter with very sparse Phragmites. Other sections have a cover of dead and collapsed Phragmites.
There is general agreement that Outside Springs should be left free of any active trials but should be monitored closely.