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Matt Ridley’s take on the biodiversity threat:
Driven perhaps by envy at the attention that climate change is getting, and ambition to set up a great new intergovernmental body that can fly scientists to mega-conferences, biologists have gone into overdrive on the subject of biodiversity this week.
Lot - World - Wildlife - Enhance - Coverage
They are right that there is a lot wrong with the world’s wildlife, that we can do much more to conserve, enhance and recover it, but much of the coverage in the media, and many of the pronouncements of Sir Bob Watson, chair of the Intergovernmental Panel on Biodiversity and Ecosystem Services (IPBES), are frankly weird.
The threat to biodiversity is not new, not necessarily accelerating, mostly not caused by economic growth or prosperity, nor by climate change, and won’t be reversed by retreating into organic self-sufficiency. Here’s a few gentle correctives.
Species - Rates - Mammals - Birds - Century
Species extinction rates of mammals and birds peaked in the 19th century (mostly because of ships taking rats to islands). The last extinction of a breeding bird species in Europe was the Great Auk, in 1844. Thousands of years ago, stone-age hunter-gatherers caused megafaunal mass extinctions on North and South America, Australia, New Zealand and Madagascar with no help from modern technology or capitalism. That’s not to say extinctions don’t still happen but by far the biggest cause is still invasive alien species, especially on islands: it’s chytrid fungi that have killed off many frogs and toads, avian malaria that has killed off many of Hawaii’s honeycreepers, and so on.
This is a specific problem that can be tackled and reversed, but it will take technology and science and money, not retreating into self-sufficiency and eating beans. The eradication of rats on South Georgia island was a fine example of doing this right, with helicopters, GPS and a lot of science.
We’ve been here before. In 1981,...
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