期刊
FRONTIERS IN ECOLOGY AND EVOLUTION
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fevo.2021.680041
关键词
diversity gradient; lineage diversity; lineage age; tropical montane forest; TILD; environmental crossroads
类别
资金
- NERC-E3DTP studentship [NERC NE/L002558/1]
- Moss family
- NERC [NE/G018278/1]
- ARC [DP170104091]
- US National Science Foundation [NSF DEB LTREB 1754664]
- NSF DEB LTREB [1754647]
- Gordon and Betty Moore Foundation Andes-Amazon Program
- ForestPlots
- US National Science Foundation LTREB grant [1754647]
- NERC [NE/G018278/1] Funding Source: UKRI
- Division Of Environmental Biology
- Direct For Biological Sciences [1754647] Funding Source: National Science Foundation
Elevation gradients show complex diversity patterns, with evolutionary diversity peaking at mid-elevations while taxonomic richness remains stable from low to mid-elevations and then decreases with elevation. The distribution trends of younger and older lineages vary across elevation gradients.
Elevation gradients present enigmatic diversity patterns, with trends often dependent on the dimension of diversity considered. However, focus is often on patterns of taxonomic diversity and interactions between diversity gradients and evolutionary factors, such as lineage age, are poorly understood. We combine forest census data with a genus level phylogeny representing tree ferns, gymnosperms, angiosperms, and an evolutionary depth of 382 million years, to investigate taxonomic and evolutionary diversity patterns across a long tropical montane forest elevation gradient on the Amazonian flank of the Peruvian Andes. We find that evolutionary diversity peaks at mid-elevations and contrasts with taxonomic richness, which is invariant from low to mid-elevation, but then decreases with elevation. We suggest that this trend interacts with variation in the evolutionary ages of lineages across elevation, with contrasting distribution trends between younger and older lineages. For example, while 53% of young lineages (originated by 10 million years ago) occur only below similar to 1,750 m asl, just 13% of old lineages (originated by 110 million years ago) are restricted to below similar to 1,750 m asl. Overall our results support an Environmental Crossroads hypothesis, whereby a mid-gradient mingling of distinct floras creates an evolutionary diversity in mid-elevation Andean forests that rivals that of the Amazonian lowlands.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据