Hyperdominance in the Amazonian Tree Flora
Hyperdominance in the Amazonian Tree Flora
复制标题
DOI：
10.1126/science.1243092
复制
发表时间：
2013-10-18
期刊：
影响因子：
56.9
通讯作者：
Silman, Miles R.
中科院分区：
文献类型：
--
作者：
ter Steege, Hans;Pitman, Nigel C. A.;Silman, Miles R.
亚马逊河流域的广阔范围在历史上限制了对当地和区域尺度的树木群落的研究。在这里，我们提供的经验数据的共性，稀有性和丰富的低地树种在整个亚马逊盆地和圭亚那盾（亚马逊），收集在1170树地块在所有主要的森林类型。据推测，亚马逊河流域拥有大约16,000种树木，其中只有227种（1.4%）占所有树木的一半。其中大多数是生境专家，只在盆地的一两个地区占主导地位。我们讨论了一些影响的发现，一小群物种的多样性比北美树木区系占世界上最多样化的树木群落的一半。
The vast extent of the Amazon Basin has historically restricted the study of its tree communities to the local and regional scales. Here, we provide empirical data on the commonness, rarity, and richness of lowland tree species across the entire Amazon Basin and Guiana Shield (Amazonia), collected in 1170 tree plots in all major forest types. Extrapolations suggest that Amazonia harbors roughly 16,000 tree species, of which just 227 (1.4%) account for half of all trees. Most of these are habitat specialists and only dominant in one or two regions of the basin. We discuss some implications of the finding that a small group of species-less diverse than the North American tree flora-accounts for half of the world's most diverse tree community.