How did the 20th century fur and skin trade impact Brazil's Amazon?

Scientists find that commercial hunting caused "basin-wide collapse" among aquatic species

Scientists have conducted what they call the first systematic, historical account of the impacts on wildlife in the Amazon basin of the 20th century international trade in furs and skins. The conclusion: "basin-wide population collapse" for aquatic species, but much greater resilience shown by terrestrial species.

The study focuses on four states in Brazil - Acre, Amazonas, Rondonia and Roraima - and draws on a wide range of historical records including those belonging to the Amazonas state government and the concession owner of the Manaus port. It was published in Science Advances in late 2016, but is reported now to mark UN World Wildlife Day. Here are 10 of the most fascinating - and sometimes horrifying - take-aways: