Lerp psyllids and bell miner associated dieback of eucalypt forests NSW

Ekka

Interesting topic.

You'll often see tell tale signs of lerps on euclyptus leaves, usually after they have been. But severe infestations could kill a tree and more so if these miner birds are around.

Here's a fine links to some information.

http://www.nationalparks.nsw.gov.au/...eback_strategy

http://www.dpi.vic.gov.au/dpi/nrenin...256DEA0027CFDF

http://bugs.bio.usyd.edu.au/Entomolo...ges/lerps.html

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Sean Freeman

They are very interesting docs and links, as I've said before on other topics and in fact on other forums our sclerophyll forests both wet and dry are exceptionally sensitive they exist only in narrow bands and the pressures on the niche ecosystems is high. I hadn't read the link between the Minor birds and the psyllids before but it makes some sense, we have to be a little wary of being to anthropomorphic in trying to understand the driving forces in both population levels and interaltionships between different trophic levels in a food web...in more readable english it is the culmination of many, often disperate and weakly connected factors. The role of the birds would be far less significant without the other environmental factors, almost like peeling an onion layer upon layer.

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Sean

Trees are poems that earth writes upon the sky,
We fell them down and turn them into paper,
That we may record our emptiness.
- Kahlil Gibran