Climate controls on C3 vs. C4 productivity in North American grasslands from carbon isotope composition of soil organic matter

  • J O S E P, H C V O N F I S C H E R, Y L T I E S Z E N, D Av
  • Published 2008


We analyzed the dC of soil organic matter (SOM) and fine roots from 55 native grassland sites widely distributed across the US and Canadian Great Plains to examine the relative production of C3 vs. C4 plants (hereafter %C4) at the continental scale. Our climate vs. %C4 results agreed well with North American field studies on %C4, but showed bias with… (More)


10 Figures and Tables