“…Do intraspecific shifts in traits along an environmental gradient mirror among‐species turnover, such that sites with taller species also tend to have taller individuals of a species (Lepš et al, 2011)? Most evidence for the form of trait–environment relationships is derived from interspecific trait variation along spatial environmental gradients (Bruelheide et al, 2018; Moles et al, 2009; Sandel et al, 2016; Sandel & Low, 2019; Šímová et al, 2018), yet in a global change context, the goal is often to predict a change through time (e.g., Gaüzère et al, 2020; Pansini et al, 2021; Rubio‐Ríos et al, 2022). This requires a space‐for‐time substitution, which may or may not be reliable (Blois et al, 2013; Damgaard, 2019; De Lombaerde et al, 2018; Johnson & Miyanishi, 2008; Pickett, 1989).…”