Invasive species are encroaching upon the Dong Nai Culture-Nature Reserve, threatening the biodiversity of the site.
According to the recent research by the Biodiversity Conservation Agency (BCA) under the Viet Nam Environment Administration, the species include five floras, five fishes, an amphibian and an invertebrate.
The BCA said impacts from these species on local ones are considerable, requiring immediate control measures to prevent their harming to the environment.
Climate change is weakening the local species, creating opportunities for invasive alien species to make their approach, the agency added.
Covering an area of nearly 100,000 hectares, the Dong Nai Culture-Nature Reserve was established in 2004 and recognised as a world biosphere reserve by the UNESCO in 2011.