Department of Biology, University of Western Ontario, London, ON, N6A 3J5, Canada.
Evolution. 2020 Sep;74(9):2168-2169. doi: 10.1111/evo.14069. Epub 2020 Jul 28.
It is recognized that biodiversity changes across the planet latitudinally; however, the timing of and reasons for diversity loss at higher latitudes are not well understood. Meseguer and Condamine investigate phylogenies and fossil evidence of reptilian species and determine that global warming and cooling events allowed asymmetric extinction and dispersion across latitudes, suggesting a hypothesis where climate profoundly shapes the latitudinal diversity gradient in certain taxa.
人们认识到，生物多样性在全球范围内随纬度而变化；然而，高纬度地区多样性丧失的时间和原因还不是很清楚。Meseguer 和 Condamine 研究了爬行动物物种的系统发育和化石证据，确定全球变暖与变冷事件导致了物种在纬度上的不对称灭绝和扩散，这表明了一个假说，即气候深刻地塑造了某些分类单元的纬度多样性梯度。
