Assembly history dictates ecosystem functioning: evidence from wood decomposer communities
Assembly history dictates ecosystem functioning: evidence from wood decomposer communities
复制标题
DOI：
10.1111/j.1461-0248.2010.01465.x
复制
发表时间：
2010-06-01
期刊：
影响因子：
8.8
通讯作者：
Allen, Robert B.
中科院分区：
文献类型：
--
作者：
Fukami, Tadashi;Dickie, Ian A.;Allen, Robert B.
社区集会的历史越来越被认为是社区结构的一个基本决定因素。然而，鲜为人知的是，如何组装历史可能会影响生态系统功能，通过其对社区结构的影响。使用木材腐朽真菌作为模型系统，我们提供的实验证据表明，生态系统功能的巨大差异可能是由社区组装过程中物种移民历史的微小差异造成的。直接操纵早期移民的历史导致真菌物种丰富度和组成的三倍差异，因此，木材的分解率和碳释放的差异相同的幅度。这些影响-这是由于历史依赖的结果的竞争和促进相互作用-是显着的范围内观察到的天然森林中的氮的可用性。我们的研究结果强调了在解释生态系统功能时考虑组装历史的重要性。
Community assembly history is increasingly recognized as a fundamental determinant of community structure. However, little is known as to how assembly history may affect ecosystem functioning via its effect on community structure. Using wood-decaying fungi as a model system, we provide experimental evidence that large differences in ecosystem functioning can be caused by small differences in species immigration history during community assembly. Direct manipulation of early immigration history resulted in threefold differences in fungal species richness and composition and, as a consequence, differences of the same magnitude in the rate of decomposition and carbon release from wood. These effects - which were attributable to the history-dependent outcome of competitive and facilitative interactions - were significant across a range of nitrogen availabilities observed in natural forests. Our results highlight the importance of considering assembly history in explaining ecosystem functioning.