摘要
Population dynamics are influenced by drivers acting from outside and from within an ecosystem. Extrinsic forces operating over broad spatial scales can impart synchronous behavior to separate populations, while internal, system-specific drivers often lead to idiosyncratic behavior. Here, we demonstrate synchrony in community-level dynamics among phytoplankton and bacteria in six north temperate humic lakes. The influence of regional meteorological factors explained much of the temporal variability in the phytoplankton community, and resulted in synchronous patterns of community change among lakes. Bacterial dynamics, in contrast, were driven by system-specific interactions with phytoplankton. Despite the importance of intrinsic factors for determining bacterial community composition and dynamics, we demonstrated that biological interactions transmitted the signal of the regional extrinsic drivers to the bacterial communities, ultimately resulting in synchronous community phenologies for bacterioplankton communities as well. This demonstrates how linkages between the components of a complex biological system can work to simplify the dynamics of the system and implies that it may be possible to predict the behavior of microbial communities responsible for important biogeochemical services in the landscape.
摘要译文
人口动态受到生态系统外部和内部驱动因素的影响。在广泛的空间尺度上运作的外在力量可以将同步行为赋予不同的群体，而内部特定于系统的驱动力通常会导致特质行为。在这里，我们证明了北部温带腐殖质湖泊中浮游植物和细菌之间群落水平的动态同步。区域气象因素的影响在很大程度上解释了浮游植物群落的时间变化，并导致湖泊间群落变化的同步模式。相反，细菌动力学是由系统特定的与浮游植物的相互作用驱动的。尽管确定细菌群落组成和动力学的内在因素很重要，但我们证明了生物学相互作用将区域外在驱动力的信号传递给细菌群落，最终也导致了浮游生物群落的同步群落物候。这证明了复杂生物系统各组成部分之间的联系如何能够简化系统的动态，并暗示有可能预测负责景观中重要生物地球化学服务的微生物群落的行为。
Angela D Kent;Anthony C Yannarell;James A Rusak;Eric W Triplett;Katherine D McMahon. Synchrony in aquatic microbial community dynamics[J]. The ISME Journal, 2007,1(1): 38-47