Tropical species face high extinction risk
December 10, 2008
Analyzing databases for the number of plant species at risk in each country of the world as well as human factors including GDP, population density and deforestation, Jana Vamosi and Steven Vamosi found that human activity was not the primary cause of the increasing risk of extinction in the tropics.
Senecio keniodendron, endemic to Mount Kenya
"This is not to say that human activities are not underlying contemporary risk of extinction; instead, it implies that plant species in a tropical country will, on average, be more sensitive to a given amount of human disturbance than those in a temperate country," he added.
Vamosi says that 20 to 45 per cent of species in the tropics are at risk. The tropics hold 60 percent of Earth's plant species despite making up only 12 percent of its land mass.
Jana Vamosi and Steven Vamosi (2008). Extinction Risk Escalates in the Tropics. PLoS ONE.
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