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Environmental and anthropogenic drivers of invasive plant diversity and distribution in the HimalayaGulzar, Ruquia; Ahmad, Rameez; Hassan, Tabasum; Rashid, Irfan; Khuroo, Anzar Ahmad
Ecological informatics, July 2024, 2024-07-00, Letnik: 81Journal Article
Invasive alien species (IAS) are currently considered as one of the major causes of global environmental change. To manage the IAS, it is crucial to identify the different environmental and associated anthropogenic drivers that contribute to invasion of alien species in non-native regions. Although multiple drivers of invasion have been identified at a global scale, the relative roles of these are known to vary considerably at regional scales. Here, we investigate the role of key environmental and anthropogenic drivers in determining the diversity and distribution of selected invasive alien plant species in Kashmir Himalaya. We generated an extensive distribution dataset of these species through field sampling across the region and supplemented it with novel herbarium records. We also extracted data on the relevant environmental (climatic, soil and topographic) and anthropogenic drivers for the study region. The random forest model was employed to quantify the relative contribution of these drivers to determine the two common diversity metrics (species richness and abundance) of selected invasive alien plants. We found that soil water content followed by distance to city, the maximum air temperature, soil pH, soil temperature and human population density exerted the greatest influence on species richness of the invasive plants. Species abundance was significantly influenced by the maximum air temperature followed by soil temperature, distance to city, slope, soil pH and human population density. Overall, our findings help in disentangling the individual and interactive roles of multiple drivers of plant invasions, with wide-ranging implications for management in this Himalayan region and similar landscapes elsewhere. •Invasive alien species are one of major causes of global environmental change.•Environmental and anthropogenic drivers of invasive plants in the Himalaya studied.•Soil water content and distance to city had greatest influence on species richness.•Maximum air temperature had greatest influence on invasive species abundance.•Our study disentangles individual and interactive roles of multiple drivers in plant invasions.
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