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The contribution of species richness and composition to bacterial services

机译：物种丰富度和组成对细菌服务的贡献

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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.
机译：细菌群落提供重要的服务。它们可以分解污染物，城市垃圾和摄入的食物，是将有机物回收到植物和其他自养生物的主要手段。但是，确定提供这些服务的速率的过程才刚刚开始被确定。生物多样性影响着生态系统的运作方式（1），但是人们对细菌生物多样性与功能之间关系的形式仍然知之甚少。在这里，我们描述了一个可操作的实验，该实验测量了生物多样性如何影响包含从自然产生的可培养细菌的集合中构建的多达72种细菌的群落的功能。实验设计使我们能够处理从可培养细菌中随机选择的大量细菌物种。我们证明社区呼吸与细菌多样性增加之间存在减速的关系。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确定生态系统功能的水平方面均很重要。

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