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Nary a drop to drink

The BBC had an interesting series of maps in December last year on the effects of climate change, economic and population growth on per-capita water availability, based on the work of Martina Floerke and colleagues at the University of Kassel in Germany. Here’s the picture for 1961-90. Red is bad.

1961

And here is the 2070s. Click to enlarge.

2070s

Doesn’t look good, particularly for Central and West Asia, and both southern and North Africa. That’s where your drought tolerant crop varieties are going to come in useful, I guess. And not just that. But I don’t understand how Australia gets away with it so lightly.

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EU Council conclusions on international biodiversity beyond 2010

6. ACKNOWLEDGES that agrobiodiversity is an important element of biodiversity with significant potential for improving global food security and for climate change mitigation and adaptation, INVITES Member States and the Commission to promote research and capacity development for the sustainable use of agrobiodiversity and ENCOURAGES Member States and the Commission to implement and further strengthen the ITPGRFA;

Interesting.

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News from the Pacific

Our friend at the Island Food Community of Pohnpei, Dr Lois Englberger, sends us news that her wonderfully agrobiodiversity-friendly NGO is now on Facebook. Go on and become a fan. Lois also points us to a great series of photographs on local foods by Anna Herforth, a PhD student at Cornell University: “Her thesis work examines the nutritional benefits gained through traditional African vegetables in the diets of certain Tanzanians and Kenyans.” Speaking of photographs of agricultural biodiversity…

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How fast will this climate change be anyway?

ResearchBlogging.orgWell, in terms of distance along the Earth’s surface, about 400 m per year on average, ranging from 80 m per year in mountainous regions to 1.26 km per year in deserts. That’s according to a new paper in Nature by Loarie et al. 1 Compare that with figures of postglacial migration rates of <100 m per year for some trees. Here’s a map of the speed of temperature change by biome from the Nature paper (click to enlarge).

map

And here’s the “persistence time” for protected areas in different biomes, i.e. the diameter of protected areas divided by the climate velocity.

persistence

The persistence time — which is how long it takes for the current climate to cross a protected area — exceeds 100 years for only about 8% of protected areas. And that, dear reader, is why we need protected areas that are larger and more connected. Oh, and genebanks.