Fig. 1From: Modelling canopy fuel variables in Pinus pinaster Ait. and Pinus radiata D. Don stands in northwestern SpainPlots of residuals against lag residuals for the models of cumulative fuel estimation for needles (Rw l ) and fine twigs (Rw b6) fitted without considering the autocorrelation parameters (first and third columns) and using a first-order autoregressive error structure (second and fourth columns)Back to article page