Skip to main content
Fig. 3 | Ecological Processes

Fig. 3

From: Trajectories in nitrogen availability during forest secondary succession: illustrated by foliar δ15N

Fig. 3

Changes in foliar δ15N with succession in two Swedish forests by continuous observations. The red solid circle represents the mean value of foliar δ15N in the same sampling time. The gray solid circle in b represents the foliar δ15N in the same sampling plot. The quadratic regression fitting shows that the changes in foliar δ15N are significant at these two sites. a Norrliden site (Hasselquist and Hogberg 2014; Högberg et al. 2011): y = 0.003x− 0.2778x + 4.886, R= 0.85, P < 0.001. b Stråsan site (Blaško et al. 2013; Högberg et al. 1992): y = 0.006x− 0.385x + 1.051, R= 0.64, P < 0.001.

Back to article page