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Microbial processes and temperature in Chesapeake Bay: current relationships and potential impacts of regional warming

机译：切萨皮克湾的微生物过程和温度：区域变暖的当前关系和潜在影响

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The importance of temperature in regulating physiological processes is without question; however, the interpretation of the relationship between temperature and ecological data is much more complicated. Consequently, it is difficult to decide how the nature of the temperature response terms should be included in models used to predict responses of microbial processes to increasing regional temperature. This analysis compiles several years of data from a research programme conducted in Chesapeake Bay, in an effort to examine how individual microbial processes - as well as the balance between autotrophy and heterotrophy - have responded to temperature, and to predict changes in microbial trophic state based on realistic increases in global temperature. The upper boundary on all of the pelagic microbial rate processes that were measured could be described remarkably well as a linear function of temperature, although there was substantial scatter in the data. Pelagic microbial rate processes (e.g. phytoplankton production, respiration, bacterial productivity) showed a remarkably constrained range of Q(10) values from 1.7 to 3.4. The one notable exception to this was nitrogen uptake in the North and Mid Bay, which exhibited Q(10) values <1.0. Proxies for phytoplankton biomass (e.g. chlorophyll) were largely independent of temperature while bacterial abundance was significantly related to temperature and was found to have a Q(10) of 1.88.
机译：毫无疑问，温度在调节生理过程中的重要性。但是，温度和生态数据之间关系的解释要复杂得多。因此，很难决定在用于预测微生物过程对区域温度升高的响应的模型中应如何包括温度响应项的性质。该分析汇编了切萨皮克湾一项研究计划的数年数据，以研究单个微生物过程以及自养与异养之间的平衡如何响应温度，并预测基于微生物营养状态的变化。随着全球气温的现实上升。尽管数据中存在很大的分散性，但所测量的所有中上层微生物速率过程的上限都可以很好地描述为温度的线性函数。中上层微生物速率过程（例如浮游植物产生，呼吸作用，细菌生产力）显示出Q（10）值的显着限制范围从1.7到3.4。一个值得注意的例外是北部和中部海湾的氮吸收，其Q（10）值<1.0。浮游植物生物量（例如叶绿素）的代理很大程度上与温度无关，而细菌丰度则与温度显着相关，并发现其Q（10）为1.88。

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