A narrower gap of grazing intensity. Reply to Fetzel et al., 2017. Seasonality constrains to livestock grazing intensity
IRISARRI, JORGE GONZALO NICOLA; SEBASTIÁN AGUIAR; OESTERHELD, MARTIN; DERNER, JUSTIN D.; GOLLUSCIO, RODOLFO A.
GLOBAL CHANGE BIOLOGY
WILEY-BLACKWELL PUBLISHING, INC
Año: 2017 vol. 23 p. 3965 - 3966
Fetzel, Havlik, Herrero, & Erb (2017) globally mapped the gapbetween observed and potential grazing intensity (GI): the ratiobetween consumption by livestock and aboveground net primaryproductivity (ANPP). Fetzel et al. (2017) estimated grazing land, for-age production and livestock demand at a half-degree resolution.They mapped GI below 15% for most of the world. Here we presentsome independent tests of their predictions and show that observedGI reported in the literature is consistently higher than observed GIreported by Fetzel et al. (2017). Consequently, the gap between for-age produced and consumed may be narrower.