An international workshop on “Biological Invasions of Ecosystem by Pests and Beneficial Organisms” was held at the National Institute of Agro-Environmental Sciences in Tsukuba, Japan on February 25-27, 1997.More than 20 papers were presented at the workshop on attributes of invaders, their colonization, establishment and spread, impact of invaders on ecosystems, and evaluation of management of introduced or invasive organisms. The organisms covered were primarily insects and plants, and the presentations concentrated on biological invations into Japan and from Japan. Several papers focused on the genetics of biological invasion, including hybridization and loss of genetic diversity after biological invasions. In these respects, the coverage of the topics of the workshop was unique. This book contains 20 papers derived from the international workshop. This is a valuable publication that provides important information on the problem of biological invasion.
Part I. Attributes of invaders, their colonization, establishment and spread (Naturalized weeds from foreign countries into Japan; Comparison of ecological distributions and life historty characteristics between invasive and closely related native Plantago species in Japan; The Japanese Knotweed invasion of Europe; the potentioal for further evolution in non‐native regions; Diffusion of herbicide resistant gene by pollen flow in weeds; Formation of exotic insect fauna in Japan; Spread of invading organisms; Mathematical models for biological invasions‐competition for open spaces; Seasonal adaptation and expansion of distribution in the fall webworm Hyphantria cunea in Japan; Invasion genetics: Natural colonizations, non‐indigenous species, and classical biological control) Part II. Impact of invaders on the ecosystem(Ecological considerations in plant invasion, with New Zealand examples; Population dynamics of an invasive plant, Cirsium vulgare Ten., in the grassland of Japan; Alien plant invasion of forage crop fields and artificial pastures in Japan;Introduction of the apple snail Pomacea canaliculata and its impact on rice agriculture; Interactions between herbivorous arthropods and introduced plants in agro‐ecosystems; Interactions between Encarsia formosa, an introduced parasitoid of Trialeurodes vaporariorum, and native parasitoids; Classical biological control of the chestnut gall wasp, Dryocosmus kuriphilus; Displacement of European honey bee (Apis mellifera) subspecies by an invading African subspecies in the Americas)Part III. Evaluation and management of introduced or invasive organism(Fallopia japonica in the British Isles; Exotic weeds and their biocontrol agents in aquatic ecosystems in the United States; Evaluation of environmental impacts of introduced natural enemies)