Beta diversity of marine bacteria depends on temporal scale
Beta diversity of marine bacteria depends on temporal scale
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DOI：
10.1890/12-2125.1
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发表时间：
2013-09-01
期刊：
影响因子：
4.8
通讯作者：
Martiny, Adam C.
中科院分区：
文献类型：
--
作者：
Hatosy, Stephen M.;Martiny, Jennifer B. H.;Martiny, Adam C.
控制细菌多样性空间分布的因素已经得到了深入的研究，而对时间变化知之甚少。为了解决这个问题，我们测试了细菌时间多样性的基础机制是否在三个海洋微生物群落的不同尺度上有所不同。虽然检测到季节性营业额，至少有73%的社区变化发生在季节内的时间尺度，这表明情节事件是重要的海洋微生物群落结构。此外，营业额在不同的时间尺度似乎是由不同的因素。季节内营业额显着相关的环境变量，如磷酸盐和硅酸盐浓度，而季节和年际营业额与硝酸盐浓度和时间距离。我们观察到环境变化的幅度和不同群落中细菌多样性之间有很强的联系。类似于空间地理学，我们发现不同的时间尺度上的社区变化率。
Factors controlling the spatial distribution of bacterial diversity have been intensely studied, whereas less is known about temporal changes. To address this, we tested whether the mechanisms that underlie bacterial temporal -diversity vary across different scales in three marine microbial communities. While seasonal turnover was detected, at least 73% of the community variation occurred at intra-seasonal temporal scales, suggesting that episodic events are important in structuring marine microbial communities. In addition, turnover at different temporal scales appeared to be driven by different factors. Intra-seasonal turnover was significantly correlated to environmental variables such as phosphate and silicate concentrations, while seasonal and interannual turnover were related to nitrate concentration and temporal distance. We observed a strong link between the magnitude of environmental variation and bacterial -diversity in different communities. Analogous to spatial biogeography, we found different rates of community changes across temporal scales.