Transgressive overyielding of soil microbial biomass in a grassland plant diversity gradient. Dead link. More microbial biomass in mixtures of plants than in each of the monocultures. Which I guess is a good thing?- Ecosystem function enhanced by combining four functional types of plant species in intensively managed grassland mixtures: a 3-year continental-scale field experiment. That transgression goes for the yield of the plants too. The mixtures were also more resistant to weed invasion.
- Latitudinal gradients as natural laboratories to infer species’ responses to temperature. Meta-analysis shows that many life history traits vary with latitude, but not necessarily with temperature.
- DNA barcoding for conservation, seed banking and ecological restoration of Acacia in the Midwest of Western Australia. Not quite there yet, is it?
- Preservation of Recalcitrant Seeds. We have the technology. Recalcitrance is not an excuse. And may not be as common as advertised anyway.
- Genetic diversity and relationships in accessions from different cultivar groups and origins in the tree tomato (Solanum betaceum Cav.). It is variable. It originated in Ecuador. Even the press release struggles to say much more than that. They should have asked the mother-in-law.
- Metabolic approaches to understanding climate change impacts on seasonal host-macroparasite dynamics. Fortunately, and yet suspiciously, it is easy to estimate the model parameters even when you don’t have much data.
- Flow and stability of natural pest control services depend on complexity and crop rotation at the landscape scale. You need complexity in both space and time to get the most out of your landscapes.
- Improving fruit and wine: what does genomics have to offer? A lot. But you have to be ready for it.
Nibbles: Guatemala, Burundi, Bees, LANSA, Moringa, Sorghum domestication, Coffee rust, Zambian rhinos
- The USDA is plugging its Atlas of Crop Wild Relatives in Guatemala. So we’ll plug our post about it from November 2011. And ask again: where’s Paraguay?
- The Social Life of Beans in Burundi is a tour-de-force. I can never get enough of informal seed systems, especially from people who live in them.
- And a similar sort of thing on okra. What’s gumbo without it?
- Today’s scary bee decline story. With extra buzz.
- CGIAR comes in for some stick over the insidious view and cunning logic of “Leveraging Agriculture for Nutrition in South Asia (LANSA)”. I couldn’t possibly comment (and CG probably won’t).
- Oh boy! Global Moringa Get-togethers! In India!
- Sorghum domestication in Sudan: earlier, and less uncertain, than before.
- BBC piece on the new outbreak of coffee rust in Central America. Where are the resistant varieties?
- Head of Kew’s MSB tracks rhinos. Well, someone has to.
Nibbles: Fruit hunters, Organic interview, Hunger review, Jamaican seeds, Project evaluation, Horse domestication, Maize then and now, Impact studies, Seed kits, Amazon ranching, Habitat restoration, Native potato manual, SRI
- CBC documentary on collectors of fruit diversity. Anyone seen it?
- Matthew Dillon of Seed Matters on organic seeds.
- IFAD bigwig deconstructs Conway’s One Billion Hungry. Great summary of 400+ pages. Diversified farming systems are in there, kinda sorta.
- Jamaican bill calls on someone or other to “maximize internal intra and inter-species variation to boost benefits.” They need to fix the title too. It has something to do with the ITPGRFA.
- How to evaluate fisheries and aquaculture projects. Nothing in there about the importance of genetic diversity in these systems, or indeed their possible effects on the biodiversity around them.
- Sculptures of horses with tack from middle of Saudi Arabian desert may push date of domestication way back.
- Maize a staple, not a ceremonial condiment, in early Peruvian coastal civilizations. And also in Timor Leste for that matter. One does worry about those local landraces, though.
- Latest examples of impact of investments in agricultural R&D from EIARD. Includes African indigenous veggies!
- AVRDC sends vegetable seed kits to Mali. Including indigenous species, but apparently only improved varieties.
- Anthropologist goes to Amazon, learns not to look down his nose at ranchers.
- Millennium Seed Bank helping to restore Falkland habitats. That sort of thing can be a business, you know?
- Manual for the conservation and improvement of Chiloe’s native potatoes. Should have something similar for maize in Timor, eh? And African indigenous veggies too?
- You remember yesterday’s Nibble about SRI? Here’s more oil on the fire.
Brainfood: Vinecology, African veggies, Land abandonment, Wheat special collection, Altitude and diversity, Persistence and diversity, Intensification, Rainfall and fruit, Mosaic tree
- Vinecology: pairing wine with nature. You can have wine, and drink it too.
- The role of wild vegetable species in household food security in maize based subsistence cropping systems. Is very significant, in South Africa.
- Does land abandonment decrease species richness and abundance of plants and animals in Mediterranean pastures, arable lands and permanent croplands? Well, we wont know until these guys do their review, as described here. What a weird paper.
- Development of a core collection of Triticum and Aegilops species for improvement of wheat for activity against chronic diseases. Used GRIN to select material from areas varying in cancer prevalence.
- Patterns of Genetic Variation across Altitude in Three Plant Species of Semi-Dry Grasslands. Populations on the edge altitudinally are not on the edge genetically.
- Is community persistence related to diversity? A test with prairie species in a long-term experiment. Yes. If by persistence you mean that the community resists invasion better after you stop weeding it.
- Agricultural intensification in Brazil and its effects on land use patterns: An analysis of the 1975-2006 period. Intensification leads to decreased expansion only where land is scarce, i.e. NOT at the frontier.
- Long-term Changes in Fruit Phenology in a West African Lowland Tropical Rain Forest are Not Explained by Rainfall. I don’t get it. Maybe someone can explain it to me.
- Differences in gene expression within a striking phenotypic mosaic Eucalyptus tree that varies in susceptibility to herbivory. One tree, 2 chemotypes, many genes differentially expressed, 10 SNPs that could affect secondary metabolism.
Brainfood: Understanding conservation, Melon diversity, Brassica viruses, Livestock domestication, Parks and conservation, Intensification, Wild apple, Conservation planning, Pepper diversity, Silene diversity, Connectivity in restoration, Paying for conservation, Dog evolution, Pasture productivity
- Four barriers to the global understanding of biodiversity conservation: wealth, language, geographical location and security. Probably not a bad list for agricultural biodiversity either.
- SNP genotyping in melons: genetic variation, population structure, and linkage disequilibrium. Two main population, 5 sub-populations, no surprises. Oh hum.
- Turnip Mosaic Potyvirus Probably First Spread to Eurasian Brassica Crops from Wild Orchids about 1000 Years Ago. Which corresponds to the expansion of agriculture in Europe as a result of a warming phase.
- The Prey Pathway: A Regional History of Cattle (Bos taurus) and Pig (Sus scrofa) Domestication in the Northern Jordan Valley, Israel. Domestication in 8th millennium, preceded by overhunting. And all figured out without recourse to DNA.
- The Effects of Isolation and Natural Park Coverage for Landrace In situ Conservation: An Approach from the Montseny Mountains (NE Spain). Do farmers in parks conserve landraces because they are isolated, or because they are in parks? Both, it seems.
- Global food demand and the sustainable intensification of agriculture. Doubling in food demand from 2005 to 2050 predicted. Current trends of intensification in rich countries and expansion in not-so-rich bad, moderate intensification everywhere good.
- Postglacial recolonization history of the European crabapple (Malus sylvestris Mill.), a wild contributor to the domesticated apple. Differentiation in 3 separate glacial refugia, then expansion and admixture at boundaries.
- Testing Surrogacy Assumptions: Can Threatened and Endangered Plants Be Grouped by Biological Similarity and Abundances? No.
- Characterization of Capsicum annuum Genetic Diversity and Population Structure Based on Parallel Polymorphism Discovery with a 30K Unigene Pepper GeneChip. The hot ones are more diverse.
- Agronomical use as baby leaf salad of Silene vulgaris based on morphological, biochemical and molecular traits. Some populations are nicer than others.
- Patterns of contemporary gene flow suggest low functional connectivity of grasslands in a fragmented agricultural landscape. When restoring a species at a site, it is better if the new population is near a large existing population.
- Using choice experiments to understand public demand for the conservation of nature: A case study in a protected area of Chile. Visitors willing to pay $2-9 per visit, depending on the ecosystem service provided, which didn’t alas include CWRs.
- Y chromosome analysis of dingoes and Southeast Asian village dogs suggests a Neolithic continental expansion from Southeast Asia followed by multiple Austronesian dispersals. Dogs arose independently in SE Asia and displaced older lineages to the N and W.
- More Stable Productivity of Semi Natural Grasslands than Sown Pastures in a Seasonally Dry Climate. Over the course of a year that is, presumably due to species diversity. And the odd tree helps towards the end of the dry season. Which is why ICRAF is all over it.