- Community forestry not making enough money in Namibia. Yeah, but who is?
- Southern African freshwater bodies in trouble. Gotta be some worried rice wild relatives out there.
- Salinity increasing in Bangladesh. That can’t be good.
- Let the people have seeds of local varieties!
- Australian takes acacias to Niger, coals to Newcastle.
- Breeding rice for tolerance to high Fe in West Africa.
- “One of the most abundant sources of fish in Asia, the lake feeds a hungry nation.”
Land sharing or sparing?
That is one of the questions addressed by a paper in Journal of Applied Ecology which looks at the ecogeographic distribution of organic farming in the UK. “Land sparing” means excluding land from intensive agriculture to protect biodiversity. “Land sharing” is a contrasting strategy which would make all agricultural land better for biodiversity. The study recommends
…continuing to use intensive agriculture to meet our food production targets, but using organic farms in suitable areas to provide islands of biodiversity, as well as a smaller amount of food.
So the vote is for land sparing. Ok, fair enough. What gets me, though, is that, as usual, it is only the effect of agriculture on the surrounding wild biodiversity that is being considered. What about the biodiversity that is an integral part of the agricultural system itself? Doesn’t agrobiodiversity count for something in all this?
Nibbles: Wetlands, Grazing, Animal and diseases, Rose wine
- New wetlands map of China available. Useful for crop wild relatives?
- Sheep and cows do better and are better for you when they graze on diverse pastures.
- Animal Biodiversity and Emerging Diseases Prediction and Prevention at the Annals of the New York Academy of Sciences. Via.
- “…it would be ‘a catastrophe for Provence’s winegrowers if this ruling passes’.”
Forced penning in the Sahara
Mathilda had a post a few days ago which caught my eye, but I forgot to nibble it. Better late than never. She discusses a recent paper reporting on the archaeological excavation of Uan Afuda and other Early Holocene sites of the Acacus mountains, in the Libyan Sahara, and in particular the layers of animal dung that excavations uncovered. The paper suggests that these “dung layers are related to a forced penning of a ruminant, very likely Barbary sheep (Ammotragus lervia),” and that this is evidence of delayed use of resources designed to cope with lean periods. Mathilda goes on to hypothesize that cattle domestication keeping ((See comment from Mathilda.)) may have started in the Sahara — before the growing of crops — in a similar way.
Movable feasts
There’s no doubt that climate change poses a huge challenge for in situ conservation of species — including crop wild relatives — in protected areas. I mean, what is one to do, move the park around to follow the species as it tracks the climate? Well, that’s exactly the type of thing that marine biologists are now contemplating for Marine Protected Areas (MPA):
Maybe they’re bigger, … or spaced like stepping stones so species can hopscotch to higher latitudes. Perhaps they’re not tied to a geographic location at all, but follow conditions scientists know are important.
We saw in earlier posts that assisted migration could be another approach. A couple of things are for certain. If protected areas are aimed at individuals species, as opposed to the landscape or ecosystem, we’re going to have to rethink how we define and manage them. And ex situ conservation will be an increasingly important complement to them.
“We set aside parts of the world as if it’s going to be static,” says [Dee] Boersma, at the University of Washington, Seattle. “But the one thing that’s constant is change.”