These practices attempt to mimic nature and are not unusual for the region. In the remaining impacted area, companies plant and promote the growth of commercial tree species. Variations on these logging practices are also used in Guyana and Suriname. One recent study of the Chimanes forest in Bolivia concludes that such methods are often not systematically applied because of the associated high costs and uncertain return on the loggers' investment. In addition, stimulating regeneration of valuable commercial species, such as mahogany requires large areas of forest to be cut down, significantly enlarging the affected area.
Similar trends are evident in Venezuela's forests.
Because of the high costs involved, concessionaires operating in Venezuela do not systematically apply prescribed silvicultural treatments. Furthermore, this system of forest management has been found to be inflexible, especially in its incapacity to adapt to the different forest ecosystems of the Guayana region and to ensure natural regeneration of some valuable commercial species. Thus, virtually all trees greater than 10 cm dbh were cut in this area. Furthermore, the remaining stands of valuable species were also damaged and subject to fungal infection during the extraction of nearby trees, which eliminated the remaining adult parent trees in two or three years. Even though some wildlife species can take advantage of secondary habitats, an important number of taxa declined in abundance and others were eliminated from logged forests.