Forests & trees

January 30, 2012January 30, 2012

A Green Revolution for trees

Prof Roger Leakey, sometime of ICRAF (among other places), where he pioneered tree domestication in support of rural livelihoods, and now Vice Chairman of the International Tree Foundation, has a fascinating new book in the offing.

In contrast to the doom and gloom often emanating from the tropics, ‘Living with the Trees of Life’ illustrates how many different aspects of agricultural science can be combined into a more robust approach to farming, which will be productive, as well as more environmentally and socially sustainable. This approach uses agroforestry as a delivery mechanism for multifunctional agriculture aimed at addressing the cycle of land degradation and social deprivation in the tropics. A key role in this is played by the ‘Trees of Life’, the large number of indigenous trees that produce marketable fruits, nuts, medicines and other products of day-to-day importance in the lives of local people throughout the tropics.

The book promises to be very practical.

A 3-step approach is described which can be used to close the Yield Gap (the difference between the yield potential of food crops and the yields actually achieved by farmers). This pays special attention to land husbandry and to the wise use of the natural resources which support agriculture and the livelihoods of poor farmers. By closing the Yield Gap agroforestry builds on the advances of the Green Revolution.

Builds on those advances while avoiding its pitfalls, and indeed rectifying its more regrettable consequences, one assumes.

Finally, all this comes together in a set of five ‘Convenient Truths’ which highlight that we have most of the knowledge and skills we need. This is illustrated by the Equator Prize winning project ‘Food for Progress’, in Cameroon, a project which has also been recognized by UK Government’s Office for Science as an African Success Story.

I had a little trouble identifying this project, but I believe I finally found it, and very interesting it sounds too.

Look out for the book in July, from CABI.

January 23, 2012April 24, 2014

Brainfood: Ag vs biodiversity, Bioinformatics, Genomic association, Diversity and productivity in forests, Increasing diversity

Land, Food, and Biodiversity. Agriculture will expand, but that is bad for biodiversity. It probably must expand, actually, but this can be kept to a minimum by addressing land-use planning, governance and law enforcement, productivity, and market drivers. Oil palm as an example.
Time to change how we describe biodiversity. By finally tackling the digitization of phenome annotations, apparently. NiM ¹
Genomic and metabolic prediction of complex heterotic traits in hybrid maize. Amazingly, genotype (SNP) can predict phenotype (biomass traits) pretty well. But in a population where a bunch of dents were crossed with a couple of testers. Will it work with a diverse genebank collection of landraces?
Forest productivity increases with evenness, species richness and trait variation: a global meta-analysis. In over 50 studies, polycultures come out about 24% better than monocultures, with evenness having more of an effect than richness. Much more commentary and context at ConservationBytes.com. Compare with that recent drylands diversity and ecosystem function paper.
All Is Not Loss: Plant Biodiversity in the Anthropocene. A model says there have been “gains in exotics caused by species invasions and the introduction of agricultural domesticates and ornamental exotic plants”. Oooh! Contrarian!

January 19, 2012January 19, 2012

Nibbles: Doggy-style diversity, Livestock diversity, Pomato, Non timber, Non beer, Popcorn, Drying rice, Svalbard

“[D]iversity in domestic dogs derives from a small genetic tool kit.” Really, really small. Like, 50 genes.
ILRI says we need to maintain indigenous farm animal diversity in Asia. They eat dogs, don’t they?
You say pomato, I say totato: “Tomato-potato cross benefits farmers.” Fine, but it’s a graft. So why call it a cross?
Non timber forest products important “in times of crisis” shock.
Sumerian beer non-alcoholic? Not even beer, but “fermented cereal beverage“.
Then again, ancient Peruvians discovered popcorn. But not movies.
IRRI wants a student to re-examine optimal drying conditions for rice.
The Svalbard Global Seed Vault– is it important for plant genetic resources? Answers here, next week.

January 16, 2012January 16, 2012

Brainfood: Conservation policy, Grasspea breeding, Modeling rice diseases, Maize roots, Literature on new oil crops, Native vs non-native trees in Indonesian city parks, Cherimoya maps, Darwin Core, Seed dispersal and conservation, Oxalis variation, Polyploidy and variation, Pollinators, Microsymbionts, Plant migration, Culture and agriculture

As ever, we have added most of these references to our public group on Mendeley, for ease of finding. “Most?” we hear you say. “What gives?” Well, Mendeley and some academic publishers still don’t play nicely. There’s nothing to stop you adding the paper in question by hand, if you’re so inclined, but we don’t really have the time. And if you do, please do it right.

Why are some biodiversity policies implemented and others ignored? Lessons from the uptake of the Global Strategy for Plant Conservation by botanic gardens. Because there are no feedback mechanisms?
Genetic improvement of grass pea (Lathyrus sativus) in Ethiopia: an unfulfilled promise. Conventional breeding for low ODAP hasn’t worked, so forget about solving that problem through conventional breeding, and move on to other problems, or use genetic transformation.
Modeling and mapping potential epidemics of rice diseases globally. It is not particularly well done, but one is surprised to see it done at all. NiM ¹
Morphological and physiological characteristics of corn (Zea mays L.) roots from cultivars with different yield potentials. More roots means more yield. Among some modern varieties anyway. Under some conditions. NiM
Trends in literature on new oilseed crops and related species: Seeking evidence of increasing or waning interest. And finding it, alas. Sort of. NiM
The green colonial heritage: Woody plants in parks of Bandung, Indonesia. Native species used to be used more, and should be used more again. NiM
Mapping Genetic Diversity of Cherimoya (Annona cherimola Mill.): Application of Spatial Analysis for Conservation and Use of Plant Genetic Resources. Cool maps of microsat hotspots.
Darwin Core: An Evolving Community-Developed Biodiversity Data Standard. The way out of Genebank Database Hell? Well, maybe the match that will light the torch that will show the way out.
Seed dispersal in changing landscapes. Fragmentation, harvesting, invasions and climate change affect seed dispersal in ways that need to be understood by conservationists. NiM. And the BBC’s more verbose take on it.
Distribution models and a dated phylogeny for Chilean Oxalis species reveal occupation of new habitats by different lineages, not rapid adaptive radiation. Title says it all, really. It’s not that a single lineage exploded as new habitats became available. Old lineages were pre-adapted to the new habitats. ²
Extensive chromosomal variation in a recently formed natural allopolyploid species, Tragopogon miscellus (Asteraceae). Polyploidy leads to all hell breaking lose in the genome for generations.
Overplaying the role of honey bees as pollinators: A comment on Aebi and Neumann (2011). It’s the wild bees, hoverflies and other native pollinators, stupid! But still.
Arbuscular Mycorrhizas Reduce Nitrogen Loss via Leaching. 40 times less, no less.
Distributional migrations, expansions, and contractions of tropical plant species as revealed in dated herbarium records. Eppur si muovono. And more on the paper. And more on herbarium digitization in general. what can I tell you, I’ve got apophenia.
Ecological and socio-cultural factors influencing in situ conservation of crop diversity by traditional Andean households in Peru. There are influences; and why wouldn’t there be?

January 5, 2012January 5, 2012

Church forests in Ethiopia

For ages now scientists and others have spoken about working with sacred spaces, such as temple groves, to conserve the biodiversity they harbour. At a PLoS blog (which bills itself as “Diverse perspectives on science and medicine”) is a fascinating account of a very special set of sacred forests and recent attempts to improve their conservation.

Followers of the Ethiopian Orthodox Tewahido Churches believe they should maintain a home for all of God’s creatures around their places of worship. The result? Forests ringing churches.

There are some 35,000 church forests in Ethiopia, ranging in size from a few acres to 300 hectares. Some churches and their forests may date back to the fourth century, and all are remnants of Ethiopia’s historic Afromontane forests. To their followers, they are a sacred symbol of the garden of Eden — to be loved and cared for, but not worshipped.

Read the full article and you might agree that “not worshipped” is putting it mildly. The dominant ground insects are dung beetles adapted to work with human material. Latrines will probably do the forests a power of good. As will fences to keep livestock out. But the crucial need will be to work with the local farmers, to ensure that they can grow more on less land, allowing the forests breathing space and maybe even a bit of expansion. To what extent, I wonder, do crops in the surrounding fields depend on ecosystem services such as pollination and pest and disease control provided by the inhabitants of the forests?