Empirical tests of trait–function relationships are crucial for advancing trait‐based restoration: a response to Merchant et al. (2023)

Trait‐based restoration strategies are gaining significant attention in the scientific community. A recent article in Restoration Ecology by Merchant et al. outlined four reasons why traits are underused in restoration practice. In their response to the paper, Gornish et al. highlighted examples of how practitioners do, in fact, use traits in restoration and made recommendations for researchers to better engage with practitioners to leverage existing knowledge. Here, we clarify a preeminent challenge for either perspective: that we continue to lack the empirical data needed to develop and apply the effective trait‐based tools envisioned by many researchers. Long‐term, spatially replicated studies designed to address context‐dependency are needed to address critical knowledge gaps. Co‐developing projects with practitioners not only fosters more realistic and relatable study designs but also increases the likelihood of adopting new methods, enabling long‐term research that advances theory while improving local outcomes through more accurate trait‐based predictions.