Diversity and Distributions is a sister publication to Journal of Biogeography and Global Ecology and Biogeography. Diversity and Distributions publishes reviews and primary research papers on a very wide range of subjects relating to biodiversity. The journal accepts papers dealing with all taxa, ranging from bacteria to plants and animals, and all types of ecosystems, including experimental systems. Purely descriptive papers are generally not acceptable. Every level of ecological understanding is covered, from molecular-level, through single-species studies, to ecosystem-, biome- and global-level perspectives. Theoretical studies are most welcome. Diversity and Distributions is taking the lead in the increasingly important field of invasion ecology, a new domain at the interface of ecology and biogeography. Biological invasions present exciting opportunities to gain important new insights on the determinants and implications of biodiversity and the distribution of organisms. Contributions address such fundamental issues as the determinants of diversity at different spatial and temporal scales; the ecology of coexistence; the dynamics of range limits; the links between elements of biodiversity and ecosystem function; the determinants of rates of speciation and extinction; and the concept of "keystone" taxa. Diversity and Distributions makes provision for full-length research papers and reviews as well as short essays (up to 2000 words) considering biodiversity from a particular disciplinary, regional, political, or other standpoints ("Biodiversity Viewpoints"), and short items (up to 1000 words) of general interest with respect to biodiversity ("Biodiversity Letters").