Category Archives: Science

Books Environmental politics Science

The baiji, or a cautionary tale of how the human race can ignore approaching disaster

In Douglas Adams’ Hitchhikers’ Guide to the Galaxy series, the dolphins disappear suddenly from the earth leaving only a cryptic message: “So long, and thanks for all of the fish.” Should Qi Qi, one of the last ever Yangtze river dolphins, have been able to leave a message before his sad death after decades of life in a sterile, small concrete tank, it might well have been a variant of that: “So long, and thanks for nothing.”*

For this dolphin species, indeed this whole mammalian family, the Lipotidae, which has existed for around 21.5 million years, is now extinct. The story of how that was allowed to happen is told by the British conservation biologist Samuel Turvey, in Witness to Extinction: How We Failed to Save the Yangtze River Dolphin.

It is a story from which almost no one, except Turvey himself, and a handful of other individuals, emerges well. No one knows, and no one probably will ever now know, exactly what killed the baiji (its Chinese name. It’s scientific name is Lipotes vexilifer). It might have been the hideous pollution of the river, it might have been the illegal and vicious fishing methods in regular use, it might have been the river’s use as a major transport highway that made it a cacophonous obstacle course of deadly propellers: probably it was a combination of all of these things.

The Chinese government was culpable, certainly. It never made any serious effort not only to address these issues (which clearly would be a mammoth undertaking), but also failed to develop a safe refuge area in which the species might have been preserved. Yet this, as Turvey shows, is a developing world government in a country with no tradition at all of conservation, so that is perhaps understandable, if not excusable.

But clearly on this account even greater opprobrium should be laid at the feet of the international conservation organisations and prominent experts, which might have been expected to throw every conceivable resource at preserving this beautiful, charismatic, important species. Instead, Turvey finds, they are handicapped by a fear of failure, by an unpractical ideology, by a simple failure to face the facts.

That ideology comes down to a persistent belief that species should be preserved by preserving their habitat, not captive breeding programmes. Of course that’s a fine ideal, but clearly also sometimes — particularly in developing countries, and increasingly in a climate-changed world — is going to be impossible.

Turvey, in partnership with one other individual, Leigh Barrett, wrenched together enough money to create the starting point for what might have been a captive breeding programme. But sadly, when the careful scientific survey that they arranged was carried out in 2007, there were no baiji left.

Now, the only real memory of the baiji, what will give it a faint, ghostlike existence, is this book, which tells as much as will ever be known of its complete story: how the Chinese traditionally regarded it as a tragic maiden transformed into this beautiful, graceful creature, revered as a goddess; how ancient writers reported how it was used by boat people as a warning of danger; and how it was brought to scientific recognition by a 17-year-old son of a missionary (inevitably pictured here with one he shot). You might consider it one very small stroke of luck for the species that it has such a fine euologist – a scientific expert who writes with passion and style.
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Books Science

Myxomatosis in Britain

Over on Blogcritics I’ve a review of a book on the introduction of Myxomatosis into Britain in the 1950s. Not the most riveting thing I’ve ever read (by some distance), but some snippets of interest.

Science

Dangerous bugs and habits

A fascinating piece about the complexity of the relations between a small derided bacteria and the human race – if you know the back story, you’ll know that a lone maverick research had to go to extraordinary lengths (infecting himself), to prove that removing Helicobacter pylori would cure ulcers. But it seems the story is far more complicated than that – and we’re reminded that we’re only just beginning to grasp the simple outlines of the astonishing complexity of biological systems.

But whoops, it seems we’d better not tell the rightwingers that, they probably won’t be able to handle it. A bit pop science, and over-simplistic, but it seems that conservatives are more startled by sudden noises than liberals. Curiously reported in the Daily Mail although I suppose it shows them again they are on the right track with the “scare ’em silly” style of journalism – you’ll all be murdered in your beds by knife-wielding youths, if you’re not blown up by Islamic terrorists….

Blogging/IT Science

The ceiling post

In the field of pure coincidence, I’ve been contemplating different ceilings – first the one that collapsed in Strasbourg, bringing a (probably) all-too-brief period of sanity that sees the European Parliament continuing to work in one city. This allowed Chameleon on Redemption Blues to do her usual astonishingly comprehensive job on the Britblog roundup.

Second, a piece from the Sydney Morning Herald about possums has taken me back to my Australian youth, when I had a study with a flat tin roof, underneath a magnificent 120-year-old oak tree (now sadly demolished, with the house, for the construction of half-a-dozen no doubt hideous “villas”).

It teemed with possums, who used to enjoy bouncing back and forth from tree to roof – one cause to which I’d attribute strong nerves (I’m not the sort of person who jumps at sudden noises), and my ability to sleep through pretty much anything.

Yes, that’s a roof not ceiling – the ceiling comes into the story when the possums got inside the roof, and one day when I was sitting in the living room I realised that there was fluid, dripping through the ceiling on to my head…

(And yes, an Australian childhood might also help to explain my strong stomach. Have I told you about the funnel-web spiders that used to enjoy swinging on the back door…?)

Science

More blows to claims of human exceptionalism

It won’t come as a surprise to many owners, but scientists are coming to the conclusion that dogs do have a theory of the mind.

In a remarkable experiment to probe canine cognition, Prof Ludwig Huber and colleagues at the University of Vienna put dogs through a classic experiment done with children in which an instructor demonstrates to a toddler how to turn off a light using her forehead, once with her hands clearly visible and once when wrapped in a shawl, so that she can’t use them.
When invited to turn the light off for themselves, toddlers who were shown the first version use their heads, but those shown the second use their hands.
The standard interpretation is that the first group conclude that there must be a good but non-obvious reason for using the forehead method, as otherwise the instructor would have used her hands. Dogs do the same thing in Prof Huber’s experiments, where they had to pull a lever to obtain a reward, lending support to the idea that dogs have a rudimentary “theory of mind.

Researchers are also suggesting that they have a moral sense – and a sense of fairness. (Which I’d certainly agree with – my old Beanie and I came to a deal on dropped kebabs, hot chips etc, which with late night walks in Walthamstow were a common occurrence – she was allowed one mouthful, then I would insist that she left the rest. One night I absentmindedly tried to stop her getting the one mouthful – and that was how we ended up with a broken harness…. I wasn’t being fair.)

And elephants – unsurprisingly when you think they are an intelligent species – can add up small numbers.

Science

She’s the largest organism in Europe…

(Yes I did type that carefully).

She’s called Japanese knotweed and there’s one of her across the whole of Europe.

It all comes from one unsolicited sample sent to Kew gardens in 1850. A powerful example of unintended consequences.