Polly I'm sure you have already roamed through this site but the methods and processes envovled in placing a plant, animal or community on the EPBC lists are detailed comprehensively here
http://www.environment.gov.au/biodiv...mmunities.html
use the linke in the side bar on the right and the left to get info on specific elements of the process.
Remember that each state here in Oz has taken the framework of the National legislation EPBC Act and in effect refined it for the conditions found in that state.
I couldn't find
E fasciculosa on the national list, but that doesn't mean it hasn't been added (though I'd doubt it) its has most likely made the SA lists because of the concern about dieback through the ranges parks and specifically the vulnerability of specific Euc subgenus to fungal, insect and plant pathogens (lumping mistletoe in there I know its a parasite not pathogen!)
Read through the 1st pdf I attached and you'll find part of the explaination there. Concerns about the volume of dieback found in
E fasciculosa is discussed on pg10, results shown in table5 pg12, the difference in resiliance across subgenus pg15, and the 2004 state of
E fasciculosa communities re dieback begins around pg16.
Mistletoe is seen as an indicator, not a causal factor for
E fasciculosa decline in the ranges parks.
For each state the funding and commitment varies dramatically, region by region. These studies take time and rely on the effforts of very commited individuals and the passions they have for the areas they live in. I don't know exactly how the process works in SA, but am thinking like Qld people living and working in the parks are very sensitive to negative changes they see in the environment around them, whilst the CRC's are still in existance (just) there is a structure capable of investigating htis issues and delivering sound scientific data to support or not the intuative concerns. It is far better to identify communities when they are vunerable/threatened and action may be effective...than to wait till they are actually disappearing and all we can do is wring our hands.
An individual species like
E fasciculosa can be common and of little concern when it occurs in one community in a region but as part of another community it can be in all kinds of dire straits, the web of interrelationships between flora and fauna and the local environmental pressures create great diversity in this. We have exactly the same situation with our Wet Sclerophyll forests and the flora that dominate there, common and relatively unstressed in the drier ecosystems, or the wetter rainforests but absolutely on a knife's edge as Wet Sclerophyll.