Big animal extinction 'severed nutrient arteries'

The demise of big animals in the Amazon region 12,000 years ago cut a key way that nutrients were distributed across the landscape, a study has suggested. Researchers say animals such as huge armadillo-like creatures would have distributed vital nutrients for plants via their dung and bodies. via Pocket http://www.bbc.co.uk/news/science-environment-23634801#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa