【地球上的物种未被发现和定名的空缺,地球上生物估计有870 ± 130 万种,但只有约190万种被定名】The Linnean shortfall refers to our extremely limited knowledge of the overall biodiversity on our planet (Brown and Lomolino 1998). It is generally accepted that the number of undiscovered organisms sur- passes considerably the number of described taxa.
华莱士空缺(Wallacean shortfall)
【物种分布信息的空缺】Wallacean shortfall refers to our lack of knowledge of species distributions, both because we do not have adequate sampling efforts across multiple regions and lack straightforward methods to generalize from these data to obtain a clear picture of species distributions