Alloporus has been posting away about koalas for some time now…
At Alloporus we are not that fond of koalas. Well, more strictly we don’t like people’s responses to them from the ‘ah they are so cute’ to the ‘OMG they are about to go extinct’.
In our view, they are neither cute nor about to shuffle off into oblivion.
The main problem for the sceptic with a fascination for pragmatology is that these responses are normative. They are emotional which in the objectivity hierarchy is a step down from opinion and a long way short of evidence.
We should expect people to get their heart involved in things, it makes the world go around, so I am told.
More difficult to handle is the lack of objectivity. The reality is that the koala is not going to go extinct any time soon and certainly not in the next five minutes.
Here is what the fossil evidence tells us
Fossil evidence identifies as many as 15–20 species, following the divergence of koalas (Phascolarctidae) from terrestrial wombats (Vombatidae) 30–40 million years ago. The modern koala, Phascolarctos cinereus, which first appeared in the fossil record ~350,000 years ago, is the only extant species of the Phascolarctidae.Johnson, R. N., O’Meally, D., Chen, Z., Etherington, G. J., Ho, S. Y., Nash, W. J., … & Peel, E. (2018). Adaptation and conservation insights from the koala genome. Nature genetics, 50(8), 1102-1111
Alright, so we also know that this species is a specialised feeder, prone to certain diseases and has been squeezed by genetic bottlenecks, especially with small founder population in the southern parts of Australia.
However, as Johnson et al (2018) also point out
Current estimates put the number of koalas in Australia at only 329,000 (range 144,000–605,000), and a continuing decline is predicted.
Again ‘only’ is a classic normative word, it is an opinion. And as Alloporus has noted way too many times before, an error range of plus or minus 300,000 is simply too coarse to make any claims of disaster valid. The first task must be to tighten the estimates to something closer to the real numbers and the real rates of change.
All this is a rehash of what we have droned on about before. But then I heard a chat on the radio today.
Some journalists were commenting on the devastating consequences of COVID-19 for the $60 billion Australian tourism industry.
What they said was that Australians are unlikely to take up the slack created by the loss of the Chinese market by tourism from the locals. They thought that Australians are just not excited by the wildlife they grew up with, unlike the overseas tourists who are fascinated, often enough to travel thousands of kilometres to see them.
Now, this is interesting.
It suggests that the real reason for all the koala bruhaha from both state and Federal governments is nothing to do with its extinction at all.
It is all to do with attracting foreign tourists back to a market designed for them and not for the locals.
That $60 billion represents a lot of jobs including in regional areas. It is the same logic that brings offers of largess to Hong Kong citizens who want to come to Australia and bring their businesses and investment with them.
It is money that matters. Evidence of extinction, not so much.
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