Summer-grass winter-worm

We went to the opening of a new exhibit at the Bioparco di Roma called Bioversitalia last night. The exhibit was fine, although as usual agricultural biodiversity got short-changed a bit, and so was the food on offer. The introductory talk, however, was a thorough disappointment. Not at all inspiring. What the boffins on display should have talked about, perhaps, is things like Cordyceps sinensis, aka དབྱར་རྩྭ་དགུན་འབུ་, aka the “summer-grass winter-worm.”

The summer-grass winter-worm is a parasitic fungus from Tibet which attacks and takes over the bodies of moth larvae living in the soil. Livestock really like to eat the resulting worm-like mummies, which are also used in traditional medicine. They’re a really valuable commodity: what alerted me to their existence was a newspaper piece today about a fatal gun battle that exploded when neighbouring villages clashed over access to this resource.

Now, it is stories such as this one of the medicinal moth-mummifying fungus of Tibet that would really have got people excited in the Bioparco last night about the wonder and importance of biodiversity!

Kava makeover

Kava (a drink made from the roots of Piper methysticum) has a bad rep in some quarters. When I was in the South Pacific I blogged about it several times, and even did a little photo essay about it. It is an important part of traditional life in places live Vanuatu, Tonga and Fiji, as well as a source of income to many smallholders, and can make for a relaxing evening with friends. It does have a definite downside if you overindulge. But then so do most things, I guess. There have been health scares about it in Europe, but they are pretty much unfounded. Anyway, there’s a piece on the BBC today (and thanks to Hannes for pointing it out to me) which tells of efforts in Vanuatu to defend the drink. It quotes Vincent Lebot, kava expert, and friend.

Surveying diversity

The kind of survey where a researcher turns up at farmers’ houses and starts asking a lot of standard, rigid questions about the problems they have been having with their crops and livestock has been somewhat unfashionable of late. In fact, one of the reasons for the explosion of rapid rural appraisal (RRA) methodologies in the 1980s, followed by more participatory, often qualitative, methods (PRA) in the 1990s, was so-called “survey slavery: questionnaires surveys which took too long, misled, were wasteful, and were reported on, if at all, late.” ((See this note prepared for participants in a workshop on PRA.))

A way — in fact, a whole menu of ways — was found, as a result of the pioneering work of some NGOs and universities, of allowing people, even marginalized groups, to set the very agenda of research, as opposed to just answering a bunch of questions that researchers thought interesting.

But there is a place for well-designed, carefully tested and sensitively-administered surveys to document and analyze the ways farmers manage their resources — including their agrobiodiversity — and to provide a baseline against which to gauge the effectiveness of interventions or other possible changes. I want to talk about two recent papers that use farmer surveys to characterize farming systems, as examples of the kind of thing there might be more of in agricultural biodiversity work.

The first paper, on surveys of smallholder families in northern Pakistan, focuses on livestock production. ((Abdur Rahman, Alan J. Duncan, David W. Miller, Juergen Clemens, Pilar Frutos, Iain J. Gordon, Atiq-ur Rehman, Ataullah Baig, Farman Ali and Iain A. Wright. Livestock feed resources, production and management in the agro-pastoral system of the Hindu Kush-Karakoram-Himalayan region of Pakistan: The effect of accessibility. Agricultural Systems, In Press, Corrected Proof, Available online 5 July 2007. http://dx.doi.org/10.1016/j.agsy.2007.05.003)) The surveys were done along two transects which contrasted markedly in their transport infrastructure. One of the things the researchers looked at was the percentage of cross-bred animals per household. They found that there was a higher proportion of such improved animals in the transect with well-developed transport links and more accessible markets than in the more isolated area. As the roads get better in this latter area, the researchers think that “the proportion of traditional, unimproved animals … is likely to diminish,” and there are also likely to be “changes in land use towards higher-value commodities such as potatoes.” An interesting conclusion about likely genetic erosion — in both crops and livestock — in the region. One could imagine using this kind of information to identify areas throughout the country which are at high risk of genetic erosion due to impending road building or improvement.

The second paper looked at the adoption of soil conservation practices in Kajado district, in the Rift Valley province of Kenya. ((Jane Kabubo-Mariara. Land conservation and tenure security in Kenya: Boserup’s hypothesis revisited. Ecological Economics, In Press, Corrected Proof, Available online 9 July 2007. http://dx.doi.org/10.1016/j.ecolecon.2007.06.007)) The researcher, Jane Kabubo-Mariara of the University of Nairobi, was particularly interested in whether population density and land tenure arrangements had an effect on the likelihood of farmers constructing soil bunds and terraces and planting trees. She found that as population pressure increases, there is a “significant shift towards increased individualization of tenure” and also a “higher probability of adoption of soil bunds and planting drought-resistant vegetation.” Now, that’s fascinating enough, but what caught my attention was the dog that didn’t bark. Wouldn’t it have been interesting to know whether farmers in high density areas grew more or fewer crops, and more or fewer varieties of each?

ni-Vanuatu get traditional

I don’t know how I missed it. Having just finished a longish stint in the South Pacific, I still try to keep up with what’s going on down there, but the fact that 2007 is the “Year of the Traditional Economy” in Vanuatu totally slipped through my net. ni-Vanuatu are wonderful, friendly people and this sounds like it’s going to be fun. I’m sorry I’m not there (or nearby at any rate) any more, I would probably have tried to link up with some of the planned activities, as agricultural biodiversity seems to be very much on the agenda. Here’s one of the things that people are being encouraged to do, for example:

Each family and community to feed more pigs and chickens, plant more and/or larger gardens, plant more yams and taro, plant more fruit and nut bearing trees, plant more trees for making canoes and tamtams, plant more pandanas trees and plant more of other traditional foods and resources not listed here.