Commonly Rare and Rarely Common: Comparing Population Abundance of Invasive and Native Aquatic Species

摘要: Invasive species are leading drivers of environmental change. Their impacts often linked to their population size, but surprisingly little is known about how frequently they achieve high abundances. A nearly universal pattern in ecology that rare most locations and abundant a few, generating right-skewed abundance distributions. Here, we use data from over 24,000 populations 17 invasive 104 native aquatic test whether differ counterparts statistical patterns across multiple sites. on average reached significantly higher densities than exhibited variance. However, did not terms coefficient variation, skewness, or kurtosis. Abundance distributions all were highly right skewed (skewness>0), meaning both occurred at low where present. The was 6% 2%, respectively, the maximum observed within taxonomic group. biological significance differences between depends species-specific relationships impact. Recognition cross-site heterogeneity brings new dimension management, may help refine optimal prevention, containment, control, eradication strategies.