Every year, more than 100 million plants and animals are traded legally and illegally around the world. But whether this is sustainable remains hotly debated by researchers
Helmeted hornbills eat fruit and so are key to seed dispersal. Over-trading in this species is likely to damage its native ecosystem.. A study published on 26 July insheds some light on the issue by creating a global map of ecosystems’ resilience to current levels of wildlife trade.
For example, he says more than one million tokay geckos — small, colourful lizards common in southeast Asia — are traded every year as pets. But whether that volume of trade is sustainable is unknown.When measuring the overall sustainability of the wildlife trade, individual species cannot be considered in isolation, says Morton. Yet it’s so complex to analyse the impact of the industry on ecosystems as a whole that few attempt it.
The resulting maps allow the team to visualize the potential impact of removing a species from an ecosystem.
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