Land use change threatens global biodiversity and compromises ecosystem functions, including pollination and food production. Reduced taxonomic α‐diversity is often reported under land use change, yet the impacts could be different at larger spatial scales (i.e., γ‐diversity), either due to reduced β‐diversity amplifying diversity loss or increased β‐diversity dampening diversity loss. Additionally, studies often focus on taxonomic diversity, while other important biodiversity components, including phylogenetic diversity, can exhibit differential responses. Here, we evaluated how agricultural and urban land use alters the taxonomic and phylogenetic α‐, β‐, and γ‐diversity of an important pollinator taxon—bees. Using a multicontinental dataset of 3117 bee assemblages from 157 studies, we found that taxonomic α‐diversity was reduced by 16%–18% in both agricultural and urban habitats relative to natural habitats. Phylogenetic α‐diversity was decreased by 11%–12% in agricultural and urban habitats. Compared with natural habitats, taxonomic and phylogenetic β‐diversity increased by 11% and 6% in urban habitats, respectively, but exhibited no systematic change in agricultural habitats. We detected a 22% decline in taxonomic γ‐diversity and a 17% decline in phylogenetic γ‐diversity in agricultural habitats, but γ‐diversity of urban habitats was not significantly different from natural habitats. These findings highlight the threat of agricultural expansions to large‐scale bee diversity due to systematic γ‐diversity decline. In addition, while both urbanization and agriculture lead to consistent declines in α‐diversity, their impacts on β‐ or γ‐diversity vary, highlighting the need to study the effects of land use change at multiple scales.

In areas of high human-elephant conflict, cultivating crops that are less attractive to elephants can be a viable strategy for coexistence. Farmers in these regions often grow crops like pineapple, which are palatable to elephants and attract them into human-dominated landscapes. This study, conducted in Ruam Thai Village, adjacent to Kuiburi National Park in Thailand, evaluated the socio-economic factors affecting farmers’ interest in alternative crop cultivation and assessed the impact of elephants and environmental threats on plots containing pineapple and alternative crops. Our findings revealed that 70% of households (N = 239) rely on pineapple cultivation as their primary source of income. However, 49% of interviewed pineapple farmers reported that their cultivation was not profitable, largely owing to the high costs of agro-chemical inputs. The majority (91%) of farmers experienced negative consequences from living near wild elephants, and 50% expressed interest in cultivating alternative crops. Farmers who frequently experienced elephant visits, felt they could coexist with elephants, and perceived both positive and negative consequences from them were more likely to be interested in alternative crop cultivation. Elephants eliminated over 80% of the pineapple but less than 6% of any alternative crop species across all test plots. Using a crop scoring system based on ecological, economic, and social factors, we identified lemongrass and citronella as the most suitable alternative crop species for the study site. This multidisciplinary study highlights interventions needed to reduce barriers and increase motivators for local farmers to adopt elephant-friendly agriculture as a sustainable human–elephant coexistence strategy.

In India and other countries, large and ancient trees that persist in sacred groves and human-dominated landscapes support ecosystem services, including frugivore-mediated seed dispersal. In this study, we assessed the ecological significance of ‘giant’ trees (>1 m trunk circumference) in Vanzole Village, Western Ghats, India. We documented 82 giant trees belonging to 20 species in four sacred groves and surrounding human settlements. Sacred groves harbored a higher species richness of large trees (14 species, N = 44) than human settlements (8 species, N = 38). Tree composition varied, with Mangifera indica (Mango) and Artocarpus heterophyllus (Jackfruit) dominating in human settlements, whereas Terminalia bellirica (Beheda) and several other species were more abundant in sacred groves. Giant trees in human settlements exhibited larger canopy diameter (p = 0.002) and DBH (p < 0.001), while trees in sacred groves were significantly taller (p < 0.001). Sapling recruitment was notably higher in sacred groves; Caryota urens saplings were found under 91% of trees in groves (mean = 56.0) versus 47% in settlements (mean = 4.9). The larger-seeded Strychnos nux-vomica was nearly absent in human settlements (5%) compared to sacred groves (77%). Our study highlights the unique conservation value of sacred groves due to their retention of numerous and diverse giant trees. Together with remnant large trees in human settlements, this network is vital for sustaining the regeneration of zoochorous species by supporting the activity of hornbills and other frugivores.