A recent study puts a number to how much our consumption imperils threatened species
In the dense jungles of Cameroon and nearby countries, the population of the iconic and critically endangered western lowland gorilla declined by nearly 20 percent between 2005 and 2013 to about 360,000 individuals—and their number is expected to plunge by another 80 percent over about the next 65 years. Raw materials extracted from their habitat and used for goods manufactured in China and then sold in the U.S. and elsewhere have contributed to that decline.
Amanda Irwin, a Ph.D. student at the University of Sydney, and her colleagues examined global supply chain data, along with IUCN data on species populations and locations. They also consulted the organization’s Species Threat Abatement and Recovery Metric, which weighs the scope and severity of threats to species. The researchers then paired those data with computer models of the interactions between different economic sectors.
Other species highlighted in the study include the Malagasy giant jumping rat, a mammal that can jump 40 inches high and is found only in Madagascar. Demand for food and drinks in Europe contributes to 11 percent of this animal’s extinction-risk footprint through habitat loss caused by expanding agriculture. Tobacco, coffee and tea consumption in the U.S.
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