▪ Abstract Contributions from the field of population biology hold promise for understanding
and managing invasiveness; invasive species also offer excellent opportunities to study …

▪ Abstract Plant pathogens cause mortality and reduce fecundity of individual plants, drive
host population dynamics, and affect the structure and composition of natural plant …

▪ Abstract Novel plant-pathogen combinations occur whenever pathogen or plant species
are introduced to regions outside their native range. Whether a pathogen is able to acquire a …

Assessing risk from a novel pest or pathogen requires knowing which local plant species are
susceptible. Empirical data on the local host range of novel pests are usually lacking, but we …

Nonindigenous plants and plant pests that find their way to the United States and become
invasive can often cause problems. They cost more than $100 billion per year in crop and …

Contributions from the field of population biology hold promise for understanding and
managing invasiveness; invasive species also offer excellent opportunities to study basic …

An invasive species is one that arrives (often with human assistance) in a habitat it had not
previously occupied, then establishes a population and spreads autonomously. Species …

An explicit phylogenetic perspective provides useful tools for phytopathology and plant
disease ecology because the traits of both plants and microbes are shaped by their …

Serious impacts by nonindigenous species often occur via predation. The magnitude of
impact is expected to be closely tied to the invading species niche breadth. For predatory …

Invasive plants can simplify plant community structure, alter ecosystem processes and
undermine the ecosystem services that we derive from biotic diversity. Two invasive plants …