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BRINGING ANCIENTPLANTS BACK FROM THE BRINK

机译:从边缘带回来的蝾螈

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摘要

Why Cycads are Under ThreatCycads are currently ranked as the most threatened group of organisms on the planet, with more than 60 per cent of known species (in Africa, Asia, Australia, South, and Central America) threatened with extinction. It is estimated that about 10 per cent the extant species are comprised of fewer than 250 mature individuals in the wild.They are extremely vulnerable due to a combination of very slow growth under a changing climate, separation of male and female plants (dioecy), small populations and dependency on pollinators.
机译:为什么Cycads受到威胁Cycads目前被排名为地球上最受威胁的生物体,超过60%的已知物种(非洲,亚洲,澳大利亚,南部和中美洲)受到灭绝的威胁。 据估计,野外,大约10%的百分之百种以较少于250个成熟的个体组成。由于在不断变化的气候,雄性和雌性植物(Diocy)的分离下,它们的组合非常脆弱。 小群体和抚养人员。

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