The study by Fuller et al. explores the psychological benefits of urban greenspaces and how these benefits increase with biodiversity. The research was conducted in Sheffield, UK, focusing on 15 public greenspaces of varying sizes and compositions. The authors found that the psychological well-being of greenspace users, including measures such as reflection, distinct identity, and emotional attachment, was positively correlated with the species richness of plants and, to a lesser extent, birds. Perceived species richness was more accurate for plant species compared to butterflies and birds, suggesting that people can accurately perceive the diversity of visible, static components of biodiversity. The results indicate that successful management of urban greenspaces should emphasize biological complexity to enhance human well-being, in addition to biodiversity conservation. The study also highlights the importance of habitat heterogeneity in cueing perceptions and benefits of biodiversity, suggesting that managing greenspaces with a mosaic of habitat patches may be beneficial.The study by Fuller et al. explores the psychological benefits of urban greenspaces and how these benefits increase with biodiversity. The research was conducted in Sheffield, UK, focusing on 15 public greenspaces of varying sizes and compositions. The authors found that the psychological well-being of greenspace users, including measures such as reflection, distinct identity, and emotional attachment, was positively correlated with the species richness of plants and, to a lesser extent, birds. Perceived species richness was more accurate for plant species compared to butterflies and birds, suggesting that people can accurately perceive the diversity of visible, static components of biodiversity. The results indicate that successful management of urban greenspaces should emphasize biological complexity to enhance human well-being, in addition to biodiversity conservation. The study also highlights the importance of habitat heterogeneity in cueing perceptions and benefits of biodiversity, suggesting that managing greenspaces with a mosaic of habitat patches may be beneficial.