Non‐native species can cause the loss of biological diversity (ie, genetic, species, and
ecosystem diversity) and threaten the well‐being of humans when they become invasive. In …

Human travel and transportation of goods are increas ingly changing species distributions
(Ricciardi 2007). Non-native species—those introduced beyond their nat ural ranges—often …

Non‐native species cause changes in the ecosystems to which they are introduced. These
changes, or some of them, are usually termed impacts; they can be manifold and potentially …

The public is getting a mixed message from ecologists, other scholars, and journalists on the
topic of nonindigenous species. Misunderstandings and tension exist regarding the science …

Blanket condemnation of alien species in restoration efforts is counterproductive. Where
their presence does not unduly threaten surrounding ecosystems, alien species can be …

Human modification of the environment is driving declines in population size and
distributional extent of much of the world's biota. These declines extend to many of the most …

Approximately 50,000 nonindigenous (non-native) species are estimated to have been
introduced to the United States. Some of these are beneficial; for example, species …

Non-native species diversity of plants and fishes in the contiguous 48 United States is
analyzed to measure the influence of human population size, time of modern settlement …

Managing invasive species is a current challenge for biodiversity conservation. A recurring
recent suggestion is that by harvesting nonnatives for human consumption, people can …

The role of diversity in the maintenance of ecosystems has been studied widely in the past
decade. By correlating richness and diversity with basic ecosystem processes, these …