I have just exchanged emails with Martin about the trend at Kelly Swamp with respect to both Typha (cumbungi/cattails) and Phragmites (reed). The former is the more aggressively expansive at Kellys.
(See previous messages about THE LOG.) Reed might be the more invasive species elsewhere. The leaves of both have a lifespan of less than a year, but the timing of the cycle may be affected by drying conditions.
There is useful information about both species, and associated bird life, at
http://www.nccma.vic.gov.au/sites/default/files/publications/managing_typha_and_phragmites_workshop_report_final_-_march_2015.pdf
From: Canberrabirds <>
On Behalf Of Martin Butterfield via Canberrabirds
Sent: Friday, 1 October 2021 6:55 AM
To: cog chatline <>
Subject: [Canberrabirds] Phragmites
One of the main changes I have noted in recent years is the way the reeds are gradually taking over Kelly's Swamp. From past conversations with Rangers I understand that it is very difficult to
control them. A similar situation appeared to exist at McLeods Morass at Bairnsdale when we visited a couple of months ago. However from photographs posted by Birdlife East Gippsland the reeds there have completely collapsed giving a clear view of the water
(and the thousands of Ibis walking around on the reeds).
The question that arises for me is what don't the reeds at Keelys collapse like this (or do I just not visit at the right time of year)?
