The Effects of Invasive Species on the Decline in Species Richness: A Global Meta-Analysis

摘要: Abstract Biological invasions are one of the most important ecological disturbances that threaten native biodiversity. An expected increase in rate species extinction will have major effects on structure and function ecosystems worldwide. The goal our study is to determine which properties mediate impact invasive biodiversity loss a global scale using meta-analysis. We considered role such as trophic taxonomic position invaders, groups invaded systems, type habitats whether included list harmful for loss. compiled 185 studies 253 numerical values changes richness due invasion. investigated parameters well abiotic habitat biological invasions. Our results show plant invaders highly represented (85% all studied), especially those belonging Poaceae family. For animals, predation seems be feeding behaviour associated with greatest decrease this relationship independent type, 21% decline observed aquatic 27% terrestrial habitats. In communities, birds suffer (41% decline). Finally, we found declines Europe spatially autocorrelated, suggesting consequences cannot understood through local-scale analysis alone.