RE: Grey Box Psyllid Dieback in the Cumberland Plain

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Greg Steenbeeke

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Jun 26, 2013, 12:23:20 AM6/26/13

to Rannard Janet, Peter Ridgeway, Lotte von-Richter, Nicola Booth, cumberland-p...@googlegroups.com

Hi Janet

Thanks for forwarding this. No I had not seen it. I have also pushed this response onto the Cumberland Plain Psyllid Google group for the wider audience also.

Paul’s suggestion of felling and replanting the stands is quite unreasonable (let alone entirely against at least two major pieces of legislation). It worries me that someone with a reasonably important position would be advocating actions that are effectively illegal.

As to the ‘good news’ I would think that the UWS getting a sizeable funding injection from the Environment Trust ($400k) for research into the very issues discussed (resistant genotypes, tolerant taxa, stand and individual survivorship among other research focuses) would be good news. This continues from the work Aidan Hall has been undertaking (http://www.uws.edu.au/hie/people/postgraduate_students/current_postgraduate_students/aidan_hall).

I also found when I was preparing for the workshop that the research undertaken in recent decades shows that the tree water stress paradigm was identified to not always be the case for infestation incidents, with waterlogging in plantations being one of the situations in which it was (http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1769&context=scipapers). Typically research has produced inconclusive results (according to the text in that article referring to a paper by Koricheva et al. 1998 – others I cannot lay my hands on immediately). However, I think it is erroneous to say that the research was done years ago when it would seem, from web searches that the interactions remain a field of study at several institutions around Australia and overseas.

Regards, Greg

Greg Steenbeeke
Senior Threatened Species Officer
Regional Operations Group

Biodiversity Conservation Section, Metro Region
Office of Environment and Heritage

Street: 43 Bridge St Hurstville NSW 2220

Mail: PO Box 1967, Hurstville BC, NSW 1481
T: (02) 9585 6677 fax: 9585 6442 mob: 0402 068 489

W: www.environment.nsw.gov.au

The Cumberland Plain Recovery Plan can be downloaded from: http://www.environment.nsw.gov.au/threatenedspecies/CumberlandPlainRecoveryPlan.htm

From: Rannard Janet [mailto:jran...@penrithcity.nsw.gov.au]
Sent: Wednesday, 26 June 2013 1:41 PM
To: Steenbeeke Greg; Peter Ridgeway; von-Richter Lotte
Subject: FW: Grey Box Psyllid Dieback in the Cumberland Plain

I wondered if you had seen the response below….

JANET RANNARD

BUSHLAND MANAGEMENT OFFICER

E jran...@penrithcity.nsw.gov.au

T (02) 4732 8088 | F (02) 4732 7958 | M 0407 926 386
PO Box 60, Penrith NSW 2751

penrithcity.nsw.gov.au

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Hi Nicola
I have seen this decline of Grey Box as a contractor for Blacktown and Penrith councils (for the National Trust)
I did my PhD on Psyllids in Eucalytus dunnii plantations and am sorry to see how this major environmental problem has had so little attention. Especially as the flow-on effects will be expensive. Huge areas of Grey Box will never recover and will be dead within 2-5 years. The impact on soils, weeds, birdlife and diversity, watertables and salinity is all unknown but likely to be considerable.

The research on psyllids was done years ago (1950's) and I can only assume that now the wheel is being reinvented. All psyllid case studies point to the same cycles of events: tree stress from either drought or inundation- psyllid population increase- tree decline. In all cases predators (birds) and parasitoids (wasps) are ineffective.
IMHO stem injection of insecticides is (was?) the least worse option.

Now, planning for species selection in restoration projects should be the order of the day. Restoration at the landscape scale is required, not reserve by reserve. Already you see huge weed problems emerging as canopies thin and abundant sunlight penetrates the (weedy) groundlayer.
Much of the existing stands should be felled, burned and replanted/ direct seeded, preferably before the soil seed banks are dominated by weed seeds.
Maybe there is some resistant Greybox genetic material out there?

One benefit will be the great business opportunities available for arborists in western Sydney. There are so many dead trees that will be needed to to be removed from parks and residential areas.

is there any good news?
Cheers, paul

Kind Regards
-----------------------------------------------------------------------------
Paul Angel
Bushcare Coordinator
Recreation & Community Planning
Waverley Council
( (02) 9369 7915
* Pa...@waverley.nsw.gov.au

From: "Nicola Dixon" <Nicola...@cma.nsw.gov.au>
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Cc: <Ad...@ashfield.nsw.gov.au>, <Kerrie...@auburn.nsw.gov.au>, <kate....@bankstown.nsw.gov.au>, "Brendon Andrei" <brendon...@blacktown.nsw.gov.au>, <Carolyn.A...@blacktown.nsw.gov.au>, <eh...@bmcc.nsw.gov.au>, <lsul...@bmcc.nsw.gov.au>, <mnu...@bmcc.nsw.gov.au>, <robert...@camden.nsw.gov.au>, <andrew....@campbelltown.nsw.gov.au>, <renee....@campbelltown.nsw.gov.au>, <Shirley....@campbelltown.nsw.gov.au>, <Robert.S...@canadabay.nsw.gov.au>, <la...@canterbury.nsw.gov.au>, <Ne...@canterbury.nsw.gov.au>, <koxe...@cityofsydney.nsw.gov.au>, <rbroa...@cityofsydney.nsw.gov.au>, "Jeanie Muspratt" <Jeanie....@cma.nsw.gov.au>, "Peter Ridgeway" <Peter.R...@cma.nsw.gov.au>, "Vanessa Keyzer" <Vanessa...@cma.nsw.gov.au>, <CSad...@conservationvolunteers.com.au>, <MEll...@conservationvolunteers.com.au>, <mark.s...@cp.nsw.gov.au>, <megan.ta...@environment.gov.au>, <andrew...@environment.nsw.gov.au>, <Diana....@environment.nsw.gov.au>, <jason....@environment.nsw.gov.au>, <judy....@environment.nsw.gov.au>, <kathr...@environment.nsw.gov.au>, <mel....@environment.nsw.gov.au>, <patric...@environment.nsw.gov.au>, <paul.i...@environment.nsw.gov.au>, <Peter....@environment.nsw.gov.au>, <rda...@fairfieldcity.nsw.gov.au>, <tjoh...@fairfieldcity.nsw.gov.au>, <anna....@gosford.nsw.gov.au>, <peter....@harbourtrust.gov.au>, <martin...@hawkesbury.nsw.gov.au>, <maree.c...@holroyd.nsw.gov.au>, <Bush...@hornsby.nsw.gov.au>, <bushlandbi...@hornsby.nsw.gov.au>, <dsu...@hornsby.nsw.gov.au>, <envir...@huntershill.nsw.gov.au>, <Bush...@hurstville.nsw.gov.au>, <dena....@industry.nsw.gov.au>, <cla...@kmc.nsw.gov.au>, <jch...@kmc.nsw.gov.au>, <lwil...@kmc.nsw.gov.au>, <khea...@lanecove.nsw.gov.au>, <envre...@liverpool.nsw.gov.au>, <Do...@lmc.nsw.gov.au>, <sean.g...@manly.nsw.gov.au>, <bioc...@marrickville.nsw.gov.au>, <bio...@marrickville.nsw.gov.au>, <a.gil...@mosman.nsw.gov.au>, <ed...@nationaltrust.com.au>, <Andrew...@northsydney.nsw.gov.au>, <GKe...@parracity.nsw.gov.au>, <jran...@penrithcity.nsw.gov.au>, <Cian....@randwick.nsw.gov.au>, <matt....@randwick.nsw.gov.au>, <Max....@randwick.nsw.gov.au>, <jordan...@rbgsyd.nsw.gov.au>, <peter...@rbgsyd.nsw.gov.au>, <ASm...@rockdale.nsw.gov.au>, <mhou...@rockdale.nsw.gov.au>, <SPa...@ryde.nsw.gov.au>, <KSey...@ssc.nsw.gov.au>, <PPr...@ssc.nsw.gov.au>, <chavvauh...@strathfield.nsw.gov.au>, <hpol...@thehills.nsw.gov.au>, <rh...@thehills.nsw.gov.au>, <cas...@warringah.nsw.gov.au>, <kara....@warringah.nsw.gov.au>, <michael...@warringah.nsw.gov.au>, <whe...@warringah.nsw.gov.au>, <Debo...@waverley.nsw.gov.au>, <Pa...@waverley.nsw.gov.au>, <Su...@waverley.nsw.gov.au>, <Mandy....@Willoughby.nsw.gov.au>, <Alexandr...@wollondilly.nsw.gov.au>, <Damion....@wollondilly.nsw.gov.au>, <phel...@wollongong.nsw.gov.au>, <Rudi.A...@woollahra.nsw.gov.au>, <rebecc...@wyong.nsw.gov.au>, <wkin...@zoo.nsw.gov.au>
Date: 26/06/2013 10:53 AM
Subject: Grey Box Psyllid Dieback in the Cumberland Plain

Hi folks,

The HNCMA ran a forum in 2011 on the Grey Box Dieback in the Cumberland Plain, followed up last year by a second forum by OEH.

One of the outcomes of the forums was the need to develop an information package on Grey Box Psyllid Dieback. The HNCMA has been busy coordinating this with OEH, RBG, UWS and the tree management industry - the final result is the flyer attached (high res and low res options).

As originally agreed at the forum, this is a free publication and each agency will need to print, web host and distribute their own copies. Please feel free to print and distribute for your own uses also. Perhaps this could go on your website also, if relevant to your area?

The dieback has substantially weakened this winter, however the psyllids are still present and their origin and ecology are still unknown. The damage caused in many areas is substantial and this is very much a continuing concern. OEH and UWS are continuing their research - we'll keep you updated as this progresses.

Kind regards,

Nicola Dixon | Community Support Officer - NRM Volunteers
Hawkesbury-Nepean Catchment Management Authority
Ground Floor | 10 Valentine Ave | Parramatta
PO Box 3720 | Parramatta NSW 2124
T: 02 9895 6207 | F: 02 9895 7330| E: nicola...@cma.nsw.gov.au
www.sydney.cma.nsw.gov.au

Are you a Sydney Nature Carer? SNaC members receive regular e-bulletins every 2-3 weeks with information about environmental events, grants, awards and competitions, and other environmental and Landcare news. Joining is free and easy: simply send an email to SNaC-su...@yahoogroups.com

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wayne olling

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Jun 26, 2013, 2:56:55 AM6/26/13

to Greg Steenbeeke, Rannard Janet, Peter Ridgeway, Lotte von-Richter, Nicola Booth, cumberland-p...@googlegroups.com

An interesting discussion coming on the heels of this article in the Blaxktown Sun Newspaper:

http://www.blacktownsun.com.au/story/1593261/hope-for-sick-trees-as-insects-move-on/

Best Wishes,

Wayne

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