Extended Data Fig. 3: Relationships between air temperature and the start and end of the photosynthetic uptake period, as derived from FLUXNET data for evergreen conifer-dominated sites.
From: Ecosystem warming extends vegetation activity but heightens vulnerability to cold temperatures
a–d, Across-site patterns in spring (a) and autumn (b) in relation to mean annual temperature (n = 12 sites), and within-sites patterns in spring (c) and autumn (d) in relation to seasonal temperature anomalies (n = 86 site-years).
