First let me say I am not in any way against the clearing of whatever trees have to be cleared for the new BoM weather station. Australia has no shortage of trees or places to replace a few.
I am simply pointing out the utter hypocrisy in classifying these trees so nitpickingly adversely – see extract from Adelaide Park Lands Authority Agenda – page 60/143.

Not significant – atypical in form – low vitality – poor structure – regrowth – and low life expectancy – pass me that chainsaw quick.
The photo shows ordinary enough mallee struggling to establish itself a bit of a habitat. If a mineral exploration company wanted to say clear 18 trees like this for a drilling program – hundreds of km from anywhere at Outer Black Stump – they would expect to have to lodge a Review of Environmental Factors or REF report – probably running to many dozen pages and usually requiring a consultant costing up to or over $10,000. They would also have lodged upwards of $10,000 as an environmental bond to have an exploration licence granted in the first place – to ensure that the site was rehabilitated.
All this before your drill bit touches soil. In the case of a REF there would have to be assessments of fauna too which the BoM seems to be escaping in this case, yet there must be birds and insects inhabiting these trees.