- Assessment of genetic relationships between cultivated arracacha (Arracacia xanthorrhiza Bancr.) and its wild close relatives in the area of domestication using microsatellite markers. Lots more variation in the wild, natch.
- Exploring Relationships between Biodiversity and Dietary Diversity in the Mediterranean Region: Preliminary Insights from a Literature Review. There has been an increase in dietary diversity, but of the wrong sort of diversity.
- Special issue Of Small Ruminant Research on “Genetic diversity of small ruminants in Asia”. From the Punjab Urial sheep to the goats of Myanmar.
- Genetic diversity of flax accessions originating in the Alpine region: a case study for an ex situ germplasm evaluation based on molecular marker. Past genebank conservation hasn’t been perfect.
- Enhancing genetic gain in the era of molecular breeding. It all starts with genetic variance. Hello, genebanks!
- Crops In Silico: Generating Virtual Crops Using an Integrative and Multi-scale Modeling Platform. Factor in gene editing and goodbye genebanks.
- Unconscious selection drove seed enlargement in vegetable crops. And not only vegetables, cereals too. But remember African rice?
- Palm economic and traditional uses, evolutionary history and the IUCN Red List. Globally, the more threatened palms are the less used.
- Impact of Climate Change, Weather Extremes, and Price Risk on Global Food Supply. The effect is not just on production, but also price.
- Identifying the landscape drivers of agricultural insecticide use leveraging evidence from 100,000 fields. In Kern County, California, crop diversity decreases insecticide us. But…
Genetic erosion statistic in the dock
Colin is pissed:
Or, to put it more succinctly, stop complaining and propose something better!
Something better than
“In the past century, the number of crops and their varieties, and the genetic diversity within them, has declined as a general trend in farmers’ fields around the world.”
to be precise. Which is in turn supposed to be better than the 75% genetic erosion number, which is a fake statistic whose origin Cary Fowler points out in another comment.
Ok, I’m game, give me a few days.
And meantime, thanks for the meme.
Brainfood: CWR prioritization, CWR data, Yam core redux, Traditional landscape value, African rice domestication, Digital conservation, First farmers, Revived breed, Mitigation targets, Zoonoses, Population, JEB on legumes
- Broadening the Base, Narrowing the Task: Prioritizing Crop Wild Relative Taxa for Conservation Action. Use socioeconomic value of crop, and potential usefulness and threat status of relative.
- Germinate 3: Development of a Common Platform to Support the Distribution of Experimental Data on Crop Wild Relatives. Useful in determining the second of the above.
- Re-defining the yam (Dioscorea spp.) core collection using morphological traits. Cleaning up the core.
- “Things are different now”: Farmer perceptions of cultural ecosystem services of traditional rice landscapes in Vietnam and the Philippines. 73 indicators for the contribution of landscapes to culture, aesthetics, and local knowledge.
- A single-nucleotide polymorphism causes smaller grain size and loss of seed shattering during African rice domestication. You want no shattering? You also get smaller seeds. Like it or edit it.
- Digital conservation: An introduction. Brave new world… Special issue of Ambio.
- The Genomic History Of Southeastern Europe. Souther Greek Neolithic farmers not same as other European Neolithic farmers.
- Genomics of a revived breed: Case study of the Belgian campine cattle. Racial impurities are confined to a few farms.
- Reducing emissions from agriculture to meet the 2 °C target. We’re doomed.
- Conservation of biodiversity as a strategy for improving human health and well-being. By keeping animals and their nasty diseases away from people, we’re not talking communing with Nature here.
- The interaction of human population, food production, and biodiversity protection. Minimise the interaction.
- Nature’s pulse power: legumes, food security and climate change. Special issue of Journal of Experimental Botany on legumes. Eat up your beans!
Building the SDGs on dodgy premises
A couple of things on the SDGs today for you to wade through.
First, from FAO, there’s “FAO and the SDGs — Indicators: Measuring up to the 2030 Agenda for Sustainable Development.” There’s a lot of sensible stuff in there on how to measure progress towards the SDG targets, goal by goal. I’m afraid, however, it lost me with the little sidebar I reproduce here. No, I didn’t know that. Mainly because that first bit is not true.
And then there’s an IIED Briefing on SDG2 in particular — that’s the hunger one. Surely they’ll stay away from dodgy numbers. Nope.
Genetic diversity reduces risk in agricultural systems and allows farmers to adapt to a changing environment, yet an estimated 75 per cent of crop diversity was lost between 1900 and 2000 with local varieties replaced by modern ones.
The reference? FAO’s training manual on Building on Gender, Agrobiodiversity and Local Knowledge. Where there is this:
But also this:
More than 90 percent of crop varieties have disappeared from farmers’ fields; half of the breeds of many domestic animals have been lost. In fisheries, all the world’s 17 main fishing grounds are now being fished at or above their sustainable limits, with many fish populations effectively becoming extinct. Loss of forest cover, coastal wetlands, other ‘wild’ uncultivated areas, and the destruction of the aquatic environment exacerbate the genetic erosion of agrobiodiversity.
Which is a bit confusing. The reference for that box? This. From 1999.
Oh well.
Genetic erosion: it’s complicated
From the CIAT blog:
Putting true numbers on diversity loss turns out to be a complicated and contested business, with no shortage of strong opinions. One big part of the problem is that there aren’t many good ways to count the diversity that existed before it disappeared. Researchers have done some work to assess the changes in diversity in crop varieties of Green Revolution cereals, and to some degree on the genetic diversity within those varieties. The results indicate that, although diversity on farms decreased when farmers first replaced traditional varieties with modern types, the more recent trends are not so simple to decipher.
My work here is done.