Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Changes in vegetation and species diversity in grasslands in which centipedegrass (Eremochloa ophiuroides (Munro) Hack.) was introduced.

Abstract

Centipedegrass was introduced by sowing and transplanting into the following 3 types of grasslands: Pleioblastus-type grassland, Zoysia-type grassland, and weed-dominated (Pennisetum alopecuroides and Digitaria adscendens) grassland. Then, we evaluated changes in the vegetation and diversity of the grasslands for 8 years. Centipedegrass was established in all the grasslands, regardless of the method (sowing or transplanting). Increase in centipedegrass coverage was influenced by the vegetation of the grassland; that is, in Zoysia-type and weed-type grasslands, centipedegrass became the most dominant species in 3 to 5 years after introduction. However, in Pleioblastus-type grassland, the rate of increase in centipedegrass coverage was slow, and the summed dominance ratio of centipedegrass was second highest at the end of the investigation. The number of species and species diversity "H′" decreased with increase in centipedegrass coverage in all 3 types of grassland. This showed that the diversity in a grassland is reduced by the introduction of centipedegrass.