Mass extinction in poorly known taxa
Mass extinction in poorly known taxa
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DOI：
10.1073/pnas.1502350112
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发表时间：
2015-06-23
影响因子：
11.1
通讯作者：
Fontaine, Benoit
中科院分区：
文献类型：
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作者：
Regnier, Claire;Achaz, Guillaume;Fontaine, Benoit
自 20 世纪 80 年代以来，许多人认为我们正处于一场大规模的灭绝危机中，但在 190 万种已知的近期物种中，只有 799 种 (0.04%) 被记录为灭绝，这对危机的现实性提出了质疑。这一数字较低的原因是，对代表生物多样性大部分的极少数无脊椎动物的状况进行了评估。在这里，我们通过两种独立的方法对陆地蜗牛物种的随机样本进行推断，结果表明我们可能已经失去了地球上 7% 的物种（130,000 种灭绝）。然而，这种损失被对陆地脊椎动物的重视所掩盖，而陆地脊椎动物是大多数保护行动的目标。对物种灭绝率的预测存在争议，因为无脊椎动物基本上被排除在这些情景之外。如果我们想要更真实地了解第六次灭绝危机，就可以而且必须对无脊椎动物进行评估。
Since the 1980s, many have suggested we are in the midst of a massive extinction crisis, yet only 799 (0.04%) of the 1.9 million known recent species are recorded as extinct, questioning the reality of the crisis. This low figure is due to the fact that the status of very few invertebrates, which represent the bulk of biodiversity, have been evaluated. Here we show, based on extrapolation from a random sample of land snail species via two independent approaches, that we may already have lost 7% (130,000 extinctions) of the species on Earth. However, this loss is masked by the emphasis on terrestrial vertebrates, the target of most conservation actions. Projections of species extinction rates are controversial because invertebrates are essentially excluded from these scenarios. Invertebrates can and must be assessed if we are to obtain a more realistic picture of the sixth extinction crisis.