The contribution of species richness and composition to bacterial services
The contribution of species richness and composition to bacterial services
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DOI：
10.1038/nature03891
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发表时间：
2005-08-25
期刊：
影响因子：
64.8
通讯作者：
Lilley, AK
中科院分区：
文献类型：
--
作者：
Bell, T;Newman, JA;Lilley, AK
细菌群落提供重要的服务。它们分解污染物、城市垃圾和摄入的食物，它们是有机物质被植物和其他自养生物循环利用的主要途径。然而，决定这些服务提供速度的流程才刚刚开始被识别。生物多样性影响生态系统的功能(1)，但细菌生物多样性与功能之间的关系形式仍然知之甚少。在这里，我们描述了一个操纵性实验，测量生物多样性如何影响由自然产生的可培养细菌组成的多达72种细菌群落的功能。实验设计使我们能够从可培养的细菌中随机选择大量细菌。我们证明了群落呼吸和细菌多样性增加之间存在减速关系。我们还表明，细菌物种之间的协同相互作用和细菌群落的组成在决定生态系统功能水平方面都很重要。
Bacterial communities provide important services. They break down pollutants, municipal waste and ingested food, and they are the primary means by which organic matter is recycled to plants and other autotrophs. However, the processes that determine the rate at which these services are supplied are only starting to be identified. Biodiversity influences the way in which ecosystems function(1), but the form of the relationship between bacterial biodiversity and functioning remains poorly understood. Here we describe a manipulative experiment that measured how biodiversity affects the functioning of communities containing up to 72 bacterial species constructed from a collection of naturally occurring culturable bacteria. The experimental design allowed us to manipulate large numbers of bacterial species selected at random from those that were culturable. We demonstrate that there is a decelerating relationship between community respiration and increasing bacterial diversity. We also show that both synergistic interactions among bacterial species and the composition of the bacterial community are important in determining the level of ecosystem functioning.