Kalanchoe daigremontiana and Stapelia gigantea are two succulent invasive species with potential impacts on recruitment of native vegetation in a protected area of importance for conservation of arid environments in northern South America. We hypothesized that while K. daigremontiana has the...

The mild climate of the central west coast of Portugal has made it predisposed to exotic plants becoming established and eventually invasive in the natural macchia vegetation. Here we record the occurrence of 34 succulents, representing eight families, as forming part of the alien flora of the...

Biological invasions have become one of the main drivers of habitat degradation and a leading cause of biodiversity loss in island ecosystems worldwide. The spread of invasive species poses a particular environmental threat on the islands of the Mediterranean Basin, which are hot spots of...

We evaluate how increasing cover levels of the tree Prosopis glandulosa Torr. influence herbaceous species richness and composition in two soil-landscape positions in the mixed-grass prairie of the southern Great Plains, U.S.A. Herbaceous species biomass and composition and P. glandulosa cover were ...

Despite widespread work documenting invasion, it remains a challenge to determine invasion mechanisms and incorporate them into invasive species management. Competition theory presents a strong model for evaluating the role of resource reduction and requirements in invasion. Additionally,...

Premise of the study: Clonality has been proposed as an important mechanism favoring plant invasions, but few studies have been conducted to determine the role of clonal traits on successful invaders. An interesting trait associated with clonality is the capacity for division of labor. Division of...

The rate of transportation, introduction, dissemination, and spread of nonnative species is increasing despite growing global awareness of the extent and impact of biological invasions. Effective policies are needed to prevent an increase in the significant negative environmental and economic...

Feral herbivores can affect birds on islands indirectly, by altering habitat structure via impacts on vegetation. I censused birds in an open shrub/grassland habitat on Santa Cruz Island, California, in 1980 and again in 2008, 24 years after feral sheep were removed, in order to assess avian...

Gardening is a popular pastime, but commercial horticulture is responsible for the introduction of alien species and contributes to invasions in a variety of ways. Although an extensive international literature is available on plant invasions, it is still important at the national level to examine...

The last several decades have seen dramatic increases in ungulate populations worldwide, and white-tailed deer in the eastern United States currently exist at unprecedented densities in many areas. Numerous studies have demonstrated the effects of high densities of white-tailed deer on forest...