Volta

Where are the Alien Species? Predictions of Global Plant Species Invasions under Current Environmental Conditions and the Human Footprint

Species invasion is a significant concern because of its substantial effect on native ecosystems.A number of species-specific invasion predictions that correspond to environmental conditions are available, but literature predicting global species invasion that corresponds to environmental conditions and human activity is scarce.In this study, the potential geographic ranges of 308 alien plant species were predicted under current environmental conditions and human activities.Environmental conditions were delineated by bioclimatic (mean annual temperature, mean annual precipitation, mean temperature of wettest quarter, and precipitation of driest quarter) and topographic variables (annual solar radiation and topographic wetness index).Human activity was delineated by the human footprint, which is a raster data layer created from nine global data layers that describe human population pressure, land use and …

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