 In 2002, a study estimated there were 231 logging camps in the Piedras watershed with about 2,000 loggers operating in the area.At the time, researchers recorded more than $5 million USD worth of wood traveling to the local market in Puerto Maldonado and that in one month the logging camps on the Piedras River consumed more than 2,000 mammals and more than 2,000 birds.They also estimated the monthly harvest of bushmeat during this period was around 41,000 kg.