Getting ready for changing climates

Four papers together give an insight into what global warming promises for agriculture and agriculturalists, and how to deal with it.

ResearchBlogging.orgSome people will tell you that global warming is something we can cope with because it won’t actually create any new climates, just shift the old ones around a bit on the the surface of the Earth. They’re wrong. 1 John Williams and his colleagues published an article in PNAS in the spring that shows conclusively that even the IPCC’s B1 scenario, in which modest reduction sees CO2 stabilized at 550 parts per million by 2100 AD, creates considerable risk of completely novel climates.

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A mighty wind

My recent post about lighting strikes in a coconut genebank was picked up by the excellent Coconut Google Group and generated some interesting responses. In particular, there’s a comment from Charles Clement of the National Institute of Amazonian Research in Manaus, Brazil recounting how a high-velocity wind blast — an Amazonian wind storm — took out a large chunk of his peach palm (Bactris gasipaes) genebank. Ex situ conservation in field genebanks can be a risky business indeed. The solutions are clear: more replications within collections, cleverly distributed in space; safety duplication of the entire collection somewhere else entirely (in vitro or as seeds as appropriate); and complementary conservation in situ. But that all costs money. I would say that most food crop accessions maintained in field genebanks around the world are unique. Take coconut. The Coconut Genetic Resources Database records 1416 accessions from 28 genebanks in 23 countries. More than 600 of them are represented by a single accession.