Productivity-biodiversity relationships depend on the history of community assembly
Productivity-biodiversity relationships depend on the history of community assembly
复制标题
DOI：
10.1038/nature01785
复制
发表时间：
2003-07-24
期刊：
影响因子：
64.8
通讯作者：
Morin, PJ
中科院分区：
文献类型：
--
作者：
Fukami, T;Morin, PJ
确定生产力-物种多样性关系的原因仍然是生态学研究的中心议题(1，2)。不同的关系归因于干扰(3，4)、消费者(5，6)、生态位专业化7和空间尺度(8-14)的影响。一个未被探索的原因是群落集合的历史，即部分随机地从潜在群落成员的区域池中连续到达物种。物种到达的顺序对群落结构有很大影响(15-19)。如果装配序列与生产率相互作用以影响多样性，则不同的序列可能会导致生产率-多样性关系的变化。在这里，我们报告了一个通过使用四个组装序列在五个生产力水平组装水生微生物群落来检验这一假说的方法。在装配后的30代左右，生产力-多样性关系呈现出不同的形式，根据装配顺序的不同，有正的、驼峰形的、U形的和不显著的。这种差异是组装序列、生产力和物种同一性对物种丰度的特殊共同作用的结果。我们建议，社区集会的历史应该被添加到影响生产力-生物多样性格局的越来越多的因素清单中。
Identification of the causes of productivity-species diversity relationships remains a central topic of ecological research(1,2). Different relations have been attributed to the influence of disturbance(3,4), consumers(5,6), niche specialization 7 and spatial scale(8-14). One unexplored cause is the history of community assembly, the partly stochastic sequential arrival of species from a regional pool of potential community members. The sequence of species arrival can greatly affect community structure(15-19). If assembly sequence interacts with productivity to influence diversity, different sequences can contribute to variation in productivity-diversity relationships. Here we report a test of this hypothesis by assembling aquatic microbial communities at five productivity levels using four assembly sequences. About 30 generations after assembly, productivity-diversity relationships took various forms, including a positive, a hump-shaped, a U-shaped and a non-significant pattern, depending on assembly sequence. This variation resulted from idiosyncratic joint effects of assembly sequence, productivity and species identity on species abundances. We suggest that the history of community assembly should be added to the growing list of factors that influence productivity-biodiversity patterns.