Synthesis of a 33‐yr series of whole‐lake experiments: Effects of nutrients, grazers, and precipitation‐driven water color on chlorophyll
Synthesis of a 33‐yr series of whole‐lake experiments: Effects of nutrients, grazers, and precipitation‐driven water color on chlorophyll
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33 年系列全湖实验的综合：营养物、食草动物和降水驱动的水色对叶绿素的影响
DOI：
10.1002/lol2.10094
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发表时间：
2018
影响因子：
7.8
通讯作者：
M. Pace
中科院分区：
文献类型：
--
作者：
S. Carpenter;M. Pace
我们进行了为期 33 年的一系列全湖实验，以测量生态系统对食物网结构和养分负荷的反应，比较流向消费者的水生和陆地碳流量，并评估生态系统恢复力指标。这些操作表明，叶绿素对营养负荷和营养级联控制的放牧有反应。在本文中，我们使用对迄今为止未识别的水彩变化的新分析（以 440 nm 处的光吸光度测量）来综合实验结果。长期数据揭示了降水量的波动导致了水色的变化。我们比较了养分负荷、浮游动物生物量、浮游动物体型和水颜色对叶绿素的影响。水的颜色是叶绿素反应的一个重要因素。直到数十年的数据可用后，叶绿素对操纵反应的驱动因素才得到解决。长期背景丰富了生态系统实验的见解，并例证了湖泊学实验和长期方法的互补性。
We conducted a 33‐yr series of whole‐lake experiments to measure ecosystem responses to food web structure and nutrient load, compare aquatic and terrestrial carbon flows to consumers, and evaluate indicators of ecosystem resilience. These manipulations showed that chlorophyll responded to nutrient loading and to grazing controlled by a trophic cascade. In this article, we synthesized experimental results using a new analysis of heretofore unrecognized variation in water color, measured as light absorbance at 440 nm. Long‐term data revealed fluctuations in precipitation that drive water color variation. We compared effects of nutrient loading, zooplankton biomass, zooplankton body size, and water color on chlorophyll. Water color was an important factor in the chlorophyll response. This driver of the chlorophyll response to manipulation was not resolved until decades of data were available. A long‐term context enriched insights from ecosystem experiments and exemplified the complementarity of experimental and long‐term approaches in limnology.
影响因子：
3.7
作者：
Fergus CE;Finley AO;Soranno PA;Wagner T
通讯作者：
Wagner T