Photosynthetic quantum efficiency in south-eastern Amazonian trees may be already affected by climate change. - Tiwari R; Gloor E; da Cruz WJA; Schwantes Marimon B; Marimon-Junior BH; Reis SM; de Souza IA; Krause HG; Slot M; Winter K; Ashley D; Béu RG; et al. (Plant, cell & environment, 2021)