Honey bees (Apis mellifera) are exposed to multiple stressors such as pesticides, lack of forage, and diseases.It is therefore a long-standing aim to develop robust and meaningful indicators of bee vitality to assist beekeepers While established indicators often focus on expected colony winter mortality based on adult bee abundance and Kitchen Cadd
For curved shield tunnels in composite strata, the excavation face may undergo sliding failure due to the interface effect of soil layers, the over-excavation of shield cutterhead, and the asymmetrical thrust of jacks.Inspired by the silo theory, this paper establishes the calculation model and formula for the ultimate support pressure in the excav
Abstract Gene flow in birds can be affected by urbanization depending on natural history traits and adaptability to habitat change.Contrasting results can be expected when comparing species with opposite resilience to urbanization.In this study, we assessed genetic diversity and structure for two bird species, the urban avoider white-eared ground-s