Some Elephants in Africa Are Just a Step From Extinction - The New York Times - 0 views
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While some African elephants parade across the savanna and thrill tourists on safari, others are more discreet. They stay hidden in the forests, eating fruit.
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The threat of extinction has diminished the odds of spotting one of these wood-dwelling elephants in recent decades, according to a new I.U.C.N. Red List assessment of African elephants released Thursday. The Red List categorizes species by their risk of forever vanishing from the world. The new assessment is the first in which the conservation union treats Africa’s forest and savanna elephants as two species instead of one.
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Led by Dr. Gobush, the assessment team gathered data from 495 sites across Africa. A statistical model let them use the elephant numbers from each site to see broader trends for both species.“We essentially looked at data from as far back as possible,” Dr. Gobush said. The I.U.C.N. aims for three generations of data to get a full picture of an animal’s well-being. But for the long-lived elephants, that’s a challenge. The average savanna elephant mother gives birth at 25 years; forest elephant moms are 31 on average. Because the earliest surveys researchers could find were from the 1960s and 1970s, they could peer back only two generations for savanna elephants, and a single generation for forest elephants.
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Where elephants disappear, they leave a big gap — not just physically, but also in the work they do. Some tree species depend entirely on forest elephants to eat their fruits, swallow their large seeds and deposit them elsewhere in a pile of dung.
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Savanna elephants are “thriving,” Dr. Okita said, in the Kavango Zambezi Transfrontier Conservation Area, which overlaps five countries in southern Africa. In some parts of Gabon and the Republic of Congo, forest elephant populations have stabilized or even grown. Where people are protecting elephants against poachers and planning land use carefully, Dr. Okita said, there has been progress.