What research has there been into the impact of willow saw fly?

Understanding the impacts willow saw fly is having on willow populations in Australia is important as it can help guide future policy and willow managment practices.

If it turns out that sawfly continues to cause die back, will this reduce the spread of willows long term and eliminate the need for control programs for certain types of willows or in certain cicumstances? Will the die back allow native veg to survive and thrive under willows and eventually out compete them? Will there be a short term problem with a lot of dead willow debris in streams and rivers resulting from the die back?

The Victorian DPI has been funding Fiona Ede since to 2006 to research the impact of willow saw fly. As there have been no reported willow deaths in a period of drought and so willows are being stressed by lacck of water and saw fly but these had been willow die back of trunks and the willows re-shooting from the base.  the major concent thata willows would be extensive deaths resulting is stream distabilisation has not occurred and so Fionas researcch has moved on to looking at the impacts and implications. Here are links to Fiona's Reports

Kyla J. Finlay and Robin J. Adair "Willow Sawfly in Southeast" research for the Victorian Department of Primary industry in 2005/06
Dr Fiona Ede's July 2006 Willows Sawfly in Victoria Status Report published by the Victorian Department of Primary Industry which has an excellent description of the saw fly and issues that may arise.
Dr Fiona Ede's 2006-07 Willows Sawfly Activity in Victoria - The 2006/07 Season published by the Victorian Department of Primary Industry

Dr Fiona Ede's 2009 Willows Sawfly Report published by the Victorian Department of Primary Industry

Dr Fiona Ede's 2010 Willows Sawfly Report published by the Victorian Department of Primary Industry which includes exxpanding research into the impacts of willow die back on native plantings under the effected willows
CSIRO Willows Sawfly Facts Sheet.
CRC Weeds Willow Sawfly fact sheet

Facts sheet from the New Zealand

National Willows Taskforce Willows Sawfly page on the Weeds Australia Web site
National Willows Taskforce willow sawfly resource sheet
National willows Taskforce sawfly assessment form
so you can report the willow sawfly activity in your area.

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