THE INVASION PARADOX: RECONCILING PATTERN AND PROCESS IN SPECIES INVASIONS

摘要: The invasion paradox describes the co-occurrence of independent lines support for both a negative and positive relationship between native biodiversity invasions exotic species. leaves implications native-exotic species richness relationships open to debate: Are rich communities more or less susceptible by species? We reviewed considerable observational, experimental, theoretical evidence describing sought generalizations concerning where why occurs, its community ecology assembly processes, relevance restoration, management, policy associated with invasions. crux concerns associations at broad spatial scales, fine especially in experiments which diversity was directly manipulated. identified eight processes that can generate either relationships, but none both. As all have been shown be important some systems, simple general theory paradox, thus invasibility, is probably unrealistic. Nonetheless, we outline several key issues help resolve discuss difficult juxtaposition experimental observational data (which often ask subtly different questions), identify themes additional study. conclude natively ecosystems are likely hotspots species, reduction local further accelerate these other vulnerable habitats.