Nitrogen use efficiencies in a grassland ecosystem using 15N-stable isotope probing approaches
Michaela Reay, University of Bristol, Bristol, BS8, United Kingdom, Karina Marsden, Bangor University, Bangor, United Kingdom, Davey Jones, Bangor University, Environment Centre Wales, Bangor, United Kingdom and Richard P Evershed, University of Bristol, School of Chemistry, Bristol, United Kingdom