"A preliminary analysis of data on non-native tree species from a global database: the occurrence of two case species in urban and protected areas"

The introduction and spread of non-native tree species have become a prominent ecological concern in recent years. This study presents a preliminary analysis of data sourced from a comprehensive global database, focusing on the occurrence of two selected non-native tree species in both urban and protected areas. The aim of this research is to shed light on the patterns and factors influencing the presence and distribution of these case species. Through a systematic review of available data, we identify trends in the spatial distribution of non-native tree species in urban environments and protected natural areas. Our analysis encompasses geographical, climatic, and land-use variables to examine the ecological and anthropogenic drivers behind their presence. Initial findings suggest varying patterns in the occurrence of non-native tree species in urban and protected areas, indicating the importance of considering local factors in understanding their establishment and persistence. This study serves as a foundational exploration, highlighting the need for further research to better comprehend the ecological implications and management strategies associated with non-native tree species in diverse landscapes.