Thanks to Danny Hunter for pointing to two recent posts at CABI’s blog, one on bovine spongiform encephalopathy (mad cow disease to you and me), the other on bluetongue disease. BSE seems to be running its course and to be more or less under control, even though many mysteries still surround it. Bluetongue, however, is altogether more menacing, because it seems to have reached Britain at least partly as a result of climate change, which has allowed the midges that spread the virus to expand their range. This could be the start of something big. I don’t believe there is any resistance associated with different breeds of cattle, but I could be wrong.
The spread of agriculture into Europe
You may recall a post a few days back on how domestic pig keeping spread into Europe. Well, Razib over at Gene Expression, a genetics blog, has a post today which includes a map of the spread of agriculture north and west from the Middle East. He points out that current thinking is that either the practice of agriculture did the spreading (cultural diffusion), or people themselves (demic diffusion) — or both. Both was what the pig work implied, of course. Human genetic studies suggest that Neolithic people have made a fairly low (maybe 20%) contribution to European ancestry, and Razib summarizes the current debate about whether that therefore refutes the hypothesis that movement of people was involved in the spread of agriculture, as well as that of ideas. Bottom line: it probably doesn’t.
He also links to a recent paper that calculates a figure for the rate of movement ((Tracing the Origin and Spread of Agriculture in Europe. Pinhasi R, Fort J, Ammerman AJ. 2005. PLoS Biology Vol. 3, No. 12. doi:10.1371/journal.pbio.0030410)): 1 km/year, give or take. That was arrived at by interpolating radiocarbon dates of Neolithic archaeological sites across Europe, and it fits very well with the results of models using human genetic data. ((As far as I’m aware, however, nobody’s done anything similar with crops.)) An interesting way to think about that speed of movement is that it is roughly a one-day walk per generation.
Opening the cerrado
Cheese and olives
A column in the current issue of The Economist uses the example of Gruyère and Emmental cheeses in Switzerland to make the case that, if Europe wants to protect its traditional farmers and producers — and the agrobiodiversity which underpins their livelihoods — in the face of globalization, moving upmarket and selling expensive niche products to rich foreigners may be a better bet than “to deploy subsidies and tariffs to compete artificially on price.” Which is mostly what’s happening now.
[EU farm Commissioner] Mariann Fischer Boel … has urged food producers to focus on quality, heritage and new markets. This summer, she told exporters that import tariffs will move in only one direction in the coming years: “downwardsâ€.
Of course, that will require marketing savvy. It will also require a robust quality-monitoring and labelling systems. Because, as a New Yorker piece on the “slippery business” of trading in fake Italian extra virgin olive oil entertainingly demonstrates this week, there are plenty of wise guys around ready to exploit loopholes and weaknesses.
Later: Cheese, olives, and wine!
Disrespecting the bison
Majestically roaming Plains, bison eat corn.