Steady diversification of derived liverworts under Tertiary climatic fluctuations
Steady diversification of derived liverworts under Tertiary climatic fluctuations
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DOI：
10.1098/rsbl.2007.0287
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发表时间：
2007-10
期刊：
影响因子：
3.3
通讯作者：
Rosemary Wilson;J. Heinrichs;J. Hentschel;S. Gradstein;Harald Schneider
中科院分区：
文献类型：
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作者：
Rosemary Wilson;J. Heinrichs;J. Hentschel;S. Gradstein;Harald Schneider
热带森林包含大部分现存植物多样性，其作为生物多样性摇篮和/或博物馆的作用是我们评估全球气候变化对陆地生物群落长期影响的一个重要问题。在热带雨林中，高度多样化的苔类是一个经常被忽视但却极为常见的元素，因此它们的进化可能会揭示热带雨林生物群落对气候波动的生态稳健性。根据分化时间估计，我们记录了最丰富的苔科，Lejeuneaceae，随着时间的推移，多样性的显著持续积累。观察到的模式支持了最近发展起来的概念，即热带既是博物馆又是生物多样性的摇篮。
Tropical forests contain the majority of extant plant diversity and their role as a cradle and/or museum of biodiversity is an important issue in our attempts to assess the long-term consequences of global climate change for terrestrial biomes. Highly diverse groups of liverworts are an often ignored but extremely common element in rainforests, and thus their evolution may shed light on the ecological robustness of rainforest biomes to climate fluctuations. We record a remarkable constant accumulation of diversity through time for the most species-rich family of liverworts, Lejeuneaceae, inferred by divergence time estimates. The observed pattern supports the recently developed concept of a dual role of the tropics as both a museum and a cradle of biodiversity.