Test are pheasants, honeysuckle and tamarisk. (Non-natives also include the bee, introduced in the United States in 1620 by European settlers.)
Part of the test is based on the concept of Carroll of the biology of conciliation, an integrated approach that has recently introduced for the management of biological systems (environment, agriculture, natural resources, public health, and medical systems) incorporating non-native species.
Carroll, an ecologist at the laboratory of Professor Sharon Lawler, UC Davis Department of Entomology, and the founding director of the Davis-based Institute for contemporary developments, said he "supports the work of conservation biology to protect the natural ecosystems of invasive alien species. But we must simultaneously consider the costs of this effort. Eradication programs often fail, and can do more harm than good, especially when non-native species to integrate into their new communities.